diff --git a/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/AccessApprovalAdminClient.java b/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/AccessApprovalAdminClient.java
index ffd61f9facc4..e8f90f8b9c84 100644
--- a/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/AccessApprovalAdminClient.java
+++ b/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/AccessApprovalAdminClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -314,6 +315,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccessApprovalAdminClient implements BackgroundResource {
   private final AccessApprovalAdminSettings settings;
diff --git a/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/AccessApprovalAdminSettings.java b/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/AccessApprovalAdminSettings.java
index bf0db413e9a9..1b03087adb0c 100644
--- a/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/AccessApprovalAdminSettings.java
+++ b/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/AccessApprovalAdminSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccessApprovalAdminSettings extends ClientSettings<AccessApprovalAdminSettings> {
 
diff --git a/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/AccessApprovalStub.java b/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/AccessApprovalStub.java
index 13a6ce5efb57..2b19d43f2d90 100644
--- a/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/AccessApprovalStub.java
+++ b/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/AccessApprovalStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.accessapproval.v1.UpdateAccessApprovalSettingsMessage;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AccessApprovalStub implements BackgroundResource {
 
diff --git a/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/AccessApprovalStubSettings.java b/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/AccessApprovalStubSettings.java
index b1003fa50959..ffb83af2c3af 100644
--- a/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/AccessApprovalStubSettings.java
+++ b/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/AccessApprovalStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AccessApprovalStubSettings extends StubSettings<AccessApprovalStubSettings> {
diff --git a/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/GrpcAccessApprovalCallableFactory.java b/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/GrpcAccessApprovalCallableFactory.java
index d779978da6ff..48da292baae2 100644
--- a/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/GrpcAccessApprovalCallableFactory.java
+++ b/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/GrpcAccessApprovalCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAccessApprovalCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/GrpcAccessApprovalStub.java b/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/GrpcAccessApprovalStub.java
index 5265f4ee78b6..65bd0e76404e 100644
--- a/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/GrpcAccessApprovalStub.java
+++ b/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/GrpcAccessApprovalStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAccessApprovalStub extends AccessApprovalStub {
   private static final MethodDescriptor<ListApprovalRequestsMessage, ListApprovalRequestsResponse>
diff --git a/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/HttpJsonAccessApprovalCallableFactory.java b/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/HttpJsonAccessApprovalCallableFactory.java
index 03ef3e7e9227..effecb454626 100644
--- a/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/HttpJsonAccessApprovalCallableFactory.java
+++ b/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/HttpJsonAccessApprovalCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAccessApprovalCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/HttpJsonAccessApprovalStub.java b/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/HttpJsonAccessApprovalStub.java
index 4f47b240a27a..bbf5580ea1e2 100644
--- a/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/HttpJsonAccessApprovalStub.java
+++ b/java-accessapproval/google-cloud-accessapproval/src/main/java/com/google/cloud/accessapproval/v1/stub/HttpJsonAccessApprovalStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAccessApprovalStub extends AccessApprovalStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/AccessApprovalSettingsName.java b/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/AccessApprovalSettingsName.java
index 6f0ef43b31f3..bc136a8c16c7 100644
--- a/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/AccessApprovalSettingsName.java
+++ b/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/AccessApprovalSettingsName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccessApprovalSettingsName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/ApprovalRequestName.java b/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/ApprovalRequestName.java
index b09cf8b95502..af9c9cdaffb7 100644
--- a/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/ApprovalRequestName.java
+++ b/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/ApprovalRequestName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApprovalRequestName implements ResourceName {
   private static final PathTemplate PROJECT_APPROVAL_REQUEST =
diff --git a/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/FolderName.java b/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/FolderName.java
index 7dd43e9c6d58..b8321a0d60ca 100644
--- a/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/FolderName.java
+++ b/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/FolderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderName implements ResourceName {
   private static final PathTemplate FOLDER =
diff --git a/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/OrganizationName.java b/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/OrganizationName.java
index 2a242502f043..b10fb73af261 100644
--- a/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/OrganizationName.java
+++ b/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/ProjectName.java b/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/ProjectName.java
index bf848751a3ad..7ac5902de69e 100644
--- a/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/ProjectName.java
+++ b/java-accessapproval/proto-google-cloud-accessapproval-v1/src/main/java/com/google/cloud/accessapproval/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/AccessContextManagerClient.java b/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/AccessContextManagerClient.java
index f2d4477e9149..1a519a114627 100644
--- a/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/AccessContextManagerClient.java
+++ b/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/AccessContextManagerClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -609,6 +610,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccessContextManagerClient implements BackgroundResource {
   private final AccessContextManagerSettings settings;
diff --git a/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/AccessContextManagerSettings.java b/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/AccessContextManagerSettings.java
index 84d68eddf8d2..6806865f6e6c 100644
--- a/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/AccessContextManagerSettings.java
+++ b/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/AccessContextManagerSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccessContextManagerSettings extends ClientSettings<AccessContextManagerSettings> {
 
diff --git a/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/AccessContextManagerStub.java b/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/AccessContextManagerStub.java
index 9d4478f95d6b..e814091fbb49 100644
--- a/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/AccessContextManagerStub.java
+++ b/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/AccessContextManagerStub.java
@@ -68,6 +68,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AccessContextManagerStub implements BackgroundResource {
 
diff --git a/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/AccessContextManagerStubSettings.java b/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/AccessContextManagerStubSettings.java
index 0ba853c50b96..49f3fa5365ca 100644
--- a/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/AccessContextManagerStubSettings.java
+++ b/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/AccessContextManagerStubSettings.java
@@ -102,6 +102,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -181,6 +182,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AccessContextManagerStubSettings
diff --git a/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/GrpcAccessContextManagerCallableFactory.java b/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/GrpcAccessContextManagerCallableFactory.java
index 7cdc2134d686..6ac5e23fb052 100644
--- a/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/GrpcAccessContextManagerCallableFactory.java
+++ b/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/GrpcAccessContextManagerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAccessContextManagerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/GrpcAccessContextManagerStub.java b/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/GrpcAccessContextManagerStub.java
index 3e69e1b6807d..735748e03e7f 100644
--- a/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/GrpcAccessContextManagerStub.java
+++ b/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/GrpcAccessContextManagerStub.java
@@ -77,6 +77,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAccessContextManagerStub extends AccessContextManagerStub {
   private static final MethodDescriptor<ListAccessPoliciesRequest, ListAccessPoliciesResponse>
diff --git a/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/HttpJsonAccessContextManagerCallableFactory.java b/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/HttpJsonAccessContextManagerCallableFactory.java
index 2de1ed2f6404..9b6d6075aade 100644
--- a/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/HttpJsonAccessContextManagerCallableFactory.java
+++ b/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/HttpJsonAccessContextManagerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAccessContextManagerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/HttpJsonAccessContextManagerStub.java b/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/HttpJsonAccessContextManagerStub.java
index 9419bf7aa329..48a4016918fa 100644
--- a/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/HttpJsonAccessContextManagerStub.java
+++ b/java-accesscontextmanager/google-identity-accesscontextmanager/src/main/java/com/google/identity/accesscontextmanager/v1/stub/HttpJsonAccessContextManagerStub.java
@@ -88,6 +88,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -95,6 +96,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAccessContextManagerStub extends AccessContextManagerStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/AccessLevelName.java b/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/AccessLevelName.java
index e511e2dffa8e..683ad11eafa3 100644
--- a/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/AccessLevelName.java
+++ b/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/AccessLevelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccessLevelName implements ResourceName {
   private static final PathTemplate ACCESS_POLICY_ACCESS_LEVEL =
diff --git a/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/AccessPolicyName.java b/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/AccessPolicyName.java
index 34a4c1036cdf..77b711b485fc 100644
--- a/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/AccessPolicyName.java
+++ b/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/AccessPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccessPolicyName implements ResourceName {
   private static final PathTemplate ACCESS_POLICY =
diff --git a/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/GcpUserAccessBindingName.java b/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/GcpUserAccessBindingName.java
index b6388715a43e..364c35821d35 100644
--- a/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/GcpUserAccessBindingName.java
+++ b/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/GcpUserAccessBindingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GcpUserAccessBindingName implements ResourceName {
   private static final PathTemplate ORGANIZATION_GCP_USER_ACCESS_BINDING =
diff --git a/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/OrganizationName.java b/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/OrganizationName.java
index da76426c61df..4fa77778b555 100644
--- a/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/OrganizationName.java
+++ b/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/ServicePerimeterName.java b/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/ServicePerimeterName.java
index 49fb9b8faf1b..9dc9b818a4c3 100644
--- a/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/ServicePerimeterName.java
+++ b/java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/src/main/java/com/google/identity/accesscontextmanager/v1/ServicePerimeterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServicePerimeterName implements ResourceName {
   private static final PathTemplate ACCESS_POLICY_SERVICE_PERIMETER =
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdBreakServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdBreakServiceClient.java
index e5da4a4dd22d..4c9e6dc19099 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdBreakServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdBreakServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -206,6 +207,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdBreakServiceClient implements BackgroundResource {
   private final AdBreakServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdBreakServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdBreakServiceSettings.java
index 9f81ba0764d5..855e2781ed7c 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdBreakServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdBreakServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdBreakServiceSettings extends ClientSettings<AdBreakServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdReviewCenterAdServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdReviewCenterAdServiceClient.java
index e96a0de77cfe..c9a8c2136d9e 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdReviewCenterAdServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdReviewCenterAdServiceClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -173,6 +174,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdReviewCenterAdServiceClient implements BackgroundResource {
   private final AdReviewCenterAdServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdReviewCenterAdServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdReviewCenterAdServiceSettings.java
index fedfefcdbd6c..7c85fc41407c 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdReviewCenterAdServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdReviewCenterAdServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdReviewCenterAdServiceSettings
     extends ClientSettings<AdReviewCenterAdServiceSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdUnitServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdUnitServiceClient.java
index 638767e84af7..28ff66105135 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdUnitServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdUnitServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -288,6 +289,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdUnitServiceClient implements BackgroundResource {
   private final AdUnitServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdUnitServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdUnitServiceSettings.java
index 45b9a700d351..1acfc7a0c660 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdUnitServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AdUnitServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdUnitServiceSettings extends ClientSettings<AdUnitServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ApplicationServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ApplicationServiceClient.java
index 52f0fbeb2144..1a50f61ae305 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ApplicationServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ApplicationServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -252,6 +253,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApplicationServiceClient implements BackgroundResource {
   private final ApplicationServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ApplicationServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ApplicationServiceSettings.java
index c523c261e525..d721634de2f6 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ApplicationServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ApplicationServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApplicationServiceSettings extends ClientSettings<ApplicationServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AudienceSegmentServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AudienceSegmentServiceClient.java
index df47211c411a..a98be3a59838 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AudienceSegmentServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AudienceSegmentServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AudienceSegmentServiceClient implements BackgroundResource {
   private final AudienceSegmentServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AudienceSegmentServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AudienceSegmentServiceSettings.java
index d2d3c64332e8..f54587150de0 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AudienceSegmentServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/AudienceSegmentServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AudienceSegmentServiceSettings extends ClientSettings<AudienceSegmentServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BandwidthGroupServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BandwidthGroupServiceClient.java
index 55891acc0ac1..8db1d1394e65 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BandwidthGroupServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BandwidthGroupServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BandwidthGroupServiceClient implements BackgroundResource {
   private final BandwidthGroupServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BandwidthGroupServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BandwidthGroupServiceSettings.java
index 2a4679a05eb8..6673d6c20eb0 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BandwidthGroupServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BandwidthGroupServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BandwidthGroupServiceSettings extends ClientSettings<BandwidthGroupServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BrowserLanguageServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BrowserLanguageServiceClient.java
index 9b5cf7fbb9f0..55bf6208ee80 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BrowserLanguageServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BrowserLanguageServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BrowserLanguageServiceClient implements BackgroundResource {
   private final BrowserLanguageServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BrowserLanguageServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BrowserLanguageServiceSettings.java
index a8acfd9ff035..d8de88adfdbb 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BrowserLanguageServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BrowserLanguageServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BrowserLanguageServiceSettings extends ClientSettings<BrowserLanguageServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BrowserServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BrowserServiceClient.java
index 7403234a87f3..971b2ac05fc0 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BrowserServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BrowserServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BrowserServiceClient implements BackgroundResource {
   private final BrowserServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BrowserServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BrowserServiceSettings.java
index 83fb0c02f56f..d3a026f19a19 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BrowserServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/BrowserServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BrowserServiceSettings extends ClientSettings<BrowserServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CmsMetadataKeyServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CmsMetadataKeyServiceClient.java
index bf44022f49b4..92e01d9e3781 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CmsMetadataKeyServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CmsMetadataKeyServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -183,6 +184,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CmsMetadataKeyServiceClient implements BackgroundResource {
   private final CmsMetadataKeyServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CmsMetadataKeyServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CmsMetadataKeyServiceSettings.java
index 55494ec06519..d315bc906aca 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CmsMetadataKeyServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CmsMetadataKeyServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CmsMetadataKeyServiceSettings extends ClientSettings<CmsMetadataKeyServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CmsMetadataValueServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CmsMetadataValueServiceClient.java
index d9fe4df31029..d8b37770ef9d 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CmsMetadataValueServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CmsMetadataValueServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -183,6 +184,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CmsMetadataValueServiceClient implements BackgroundResource {
   private final CmsMetadataValueServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CmsMetadataValueServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CmsMetadataValueServiceSettings.java
index 17709e9c70b9..3069740e4195 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CmsMetadataValueServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CmsMetadataValueServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CmsMetadataValueServiceSettings
     extends ClientSettings<CmsMetadataValueServiceSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CompanyServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CompanyServiceClient.java
index f4f93851e343..e23c0dfd02a5 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CompanyServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CompanyServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompanyServiceClient implements BackgroundResource {
   private final CompanyServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CompanyServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CompanyServiceSettings.java
index d4480993c385..0941a95ac04d 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CompanyServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CompanyServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompanyServiceSettings extends ClientSettings<CompanyServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContactServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContactServiceClient.java
index e1377b5dd178..b7de99e3669b 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContactServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContactServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -211,6 +212,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContactServiceClient implements BackgroundResource {
   private final ContactServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContactServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContactServiceSettings.java
index a1581eeae034..e3fc15a513e8 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContactServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContactServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContactServiceSettings extends ClientSettings<ContactServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentBundleServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentBundleServiceClient.java
index 1441c40cb05b..91239d864e09 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentBundleServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentBundleServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContentBundleServiceClient implements BackgroundResource {
   private final ContentBundleServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentBundleServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentBundleServiceSettings.java
index 943da5f99575..fc7975380aab 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentBundleServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentBundleServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContentBundleServiceSettings extends ClientSettings<ContentBundleServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentLabelServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentLabelServiceClient.java
index a16b18db872a..78d530adb87c 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentLabelServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentLabelServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContentLabelServiceClient implements BackgroundResource {
   private final ContentLabelServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentLabelServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentLabelServiceSettings.java
index fa4d31faf3e0..64045c9f263a 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentLabelServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentLabelServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContentLabelServiceSettings extends ClientSettings<ContentLabelServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentServiceClient.java
index 816e1365dd9f..fd7f58f08b19 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContentServiceClient implements BackgroundResource {
   private final ContentServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentServiceSettings.java
index 447f1c0e67d2..87827127c03a 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ContentServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContentServiceSettings extends ClientSettings<ContentServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CreativeTemplateServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CreativeTemplateServiceClient.java
index b7667968ab47..051f25d796e7 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CreativeTemplateServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CreativeTemplateServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CreativeTemplateServiceClient implements BackgroundResource {
   private final CreativeTemplateServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CreativeTemplateServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CreativeTemplateServiceSettings.java
index 01bb073f956c..575ef1f92a6f 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CreativeTemplateServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CreativeTemplateServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CreativeTemplateServiceSettings
     extends ClientSettings<CreativeTemplateServiceSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomFieldServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomFieldServiceClient.java
index 901a49d31def..73f863c15c97 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomFieldServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomFieldServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -252,6 +253,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomFieldServiceClient implements BackgroundResource {
   private final CustomFieldServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomFieldServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomFieldServiceSettings.java
index 1d1e6b256f66..e3a62473f0bf 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomFieldServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomFieldServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomFieldServiceSettings extends ClientSettings<CustomFieldServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomTargetingKeyServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomTargetingKeyServiceClient.java
index da09707e5b81..d11b2eb688d8 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomTargetingKeyServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomTargetingKeyServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -254,6 +255,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomTargetingKeyServiceClient implements BackgroundResource {
   private final CustomTargetingKeyServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomTargetingKeyServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomTargetingKeyServiceSettings.java
index 9174b83e7f3b..52aa7857f161 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomTargetingKeyServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomTargetingKeyServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomTargetingKeyServiceSettings
     extends ClientSettings<CustomTargetingKeyServiceSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomTargetingValueServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomTargetingValueServiceClient.java
index 11f5a0cd164f..152b89b00240 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomTargetingValueServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomTargetingValueServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomTargetingValueServiceClient implements BackgroundResource {
   private final CustomTargetingValueServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomTargetingValueServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomTargetingValueServiceSettings.java
index caae9dd5e7f6..05c79cede008 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomTargetingValueServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/CustomTargetingValueServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomTargetingValueServiceSettings
     extends ClientSettings<CustomTargetingValueServiceSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceCapabilityServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceCapabilityServiceClient.java
index b01f8b20ed7d..5f8cc8640219 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceCapabilityServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceCapabilityServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeviceCapabilityServiceClient implements BackgroundResource {
   private final DeviceCapabilityServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceCapabilityServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceCapabilityServiceSettings.java
index 869092f95a97..b3942dfd2e65 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceCapabilityServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceCapabilityServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeviceCapabilityServiceSettings
     extends ClientSettings<DeviceCapabilityServiceSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceCategoryServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceCategoryServiceClient.java
index 60cf30a65105..5430678a8db0 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceCategoryServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceCategoryServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeviceCategoryServiceClient implements BackgroundResource {
   private final DeviceCategoryServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceCategoryServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceCategoryServiceSettings.java
index f7f6601630fc..248bc5b929ea 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceCategoryServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceCategoryServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeviceCategoryServiceSettings extends ClientSettings<DeviceCategoryServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceManufacturerServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceManufacturerServiceClient.java
index e091bc2d4b46..58936e99132c 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceManufacturerServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceManufacturerServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeviceManufacturerServiceClient implements BackgroundResource {
   private final DeviceManufacturerServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceManufacturerServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceManufacturerServiceSettings.java
index c46d8584df2a..098a715ec0f2 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceManufacturerServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/DeviceManufacturerServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeviceManufacturerServiceSettings
     extends ClientSettings<DeviceManufacturerServiceSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/EntitySignalsMappingServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/EntitySignalsMappingServiceClient.java
index 5fa1d1f2a874..c7b44723f16e 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/EntitySignalsMappingServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/EntitySignalsMappingServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -217,6 +218,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntitySignalsMappingServiceClient implements BackgroundResource {
   private final EntitySignalsMappingServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/EntitySignalsMappingServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/EntitySignalsMappingServiceSettings.java
index 04bf4597fde8..4eb3bf911e15 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/EntitySignalsMappingServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/EntitySignalsMappingServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntitySignalsMappingServiceSettings
     extends ClientSettings<EntitySignalsMappingServiceSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/GeoTargetServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/GeoTargetServiceClient.java
index 13b552813207..570a9bee9355 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/GeoTargetServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/GeoTargetServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GeoTargetServiceClient implements BackgroundResource {
   private final GeoTargetServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/GeoTargetServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/GeoTargetServiceSettings.java
index 4c74241d94bf..2bd073071787 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/GeoTargetServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/GeoTargetServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GeoTargetServiceSettings extends ClientSettings<GeoTargetServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LabelServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LabelServiceClient.java
index 6da7f9761848..8fa5551be8c0 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LabelServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LabelServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -249,6 +250,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LabelServiceClient implements BackgroundResource {
   private final LabelServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LabelServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LabelServiceSettings.java
index 8fff754dcfb1..6fb57ae71e7c 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LabelServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LabelServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LabelServiceSettings extends ClientSettings<LabelServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LineItemServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LineItemServiceClient.java
index d43937ca9b03..2fc22027ca18 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LineItemServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LineItemServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LineItemServiceClient implements BackgroundResource {
   private final LineItemServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LineItemServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LineItemServiceSettings.java
index 2a1405d899d3..90ebab72cb59 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LineItemServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LineItemServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LineItemServiceSettings extends ClientSettings<LineItemServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LinkedDeviceServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LinkedDeviceServiceClient.java
index 1c617508418b..f4deab4c1c8b 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LinkedDeviceServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LinkedDeviceServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LinkedDeviceServiceClient implements BackgroundResource {
   private final LinkedDeviceServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LinkedDeviceServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LinkedDeviceServiceSettings.java
index 688cd8d80a88..e0653b019b6e 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LinkedDeviceServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/LinkedDeviceServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LinkedDeviceServiceSettings extends ClientSettings<LinkedDeviceServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/McmEarningsServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/McmEarningsServiceClient.java
index 096c33288519..309abbc6ebfe 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/McmEarningsServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/McmEarningsServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class McmEarningsServiceClient implements BackgroundResource {
   private final McmEarningsServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/McmEarningsServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/McmEarningsServiceSettings.java
index a7054f673a83..7fe2aaf0dc62 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/McmEarningsServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/McmEarningsServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class McmEarningsServiceSettings extends ClientSettings<McmEarningsServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileCarrierServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileCarrierServiceClient.java
index c3bf9bc324a8..5d3102687b2b 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileCarrierServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileCarrierServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MobileCarrierServiceClient implements BackgroundResource {
   private final MobileCarrierServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileCarrierServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileCarrierServiceSettings.java
index 7370eb38bf4a..dcac9a5dcdd9 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileCarrierServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileCarrierServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MobileCarrierServiceSettings extends ClientSettings<MobileCarrierServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileDeviceServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileDeviceServiceClient.java
index 1d07a0485ab1..2d7a663687b6 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileDeviceServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileDeviceServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MobileDeviceServiceClient implements BackgroundResource {
   private final MobileDeviceServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileDeviceServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileDeviceServiceSettings.java
index 0b3661312987..9ff54fb0e75b 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileDeviceServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileDeviceServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MobileDeviceServiceSettings extends ClientSettings<MobileDeviceServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileDeviceSubmodelServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileDeviceSubmodelServiceClient.java
index 6d0c43ff1edf..e81ce0036cff 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileDeviceSubmodelServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileDeviceSubmodelServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MobileDeviceSubmodelServiceClient implements BackgroundResource {
   private final MobileDeviceSubmodelServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileDeviceSubmodelServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileDeviceSubmodelServiceSettings.java
index ff2244cefee6..dd7c89df82dc 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileDeviceSubmodelServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/MobileDeviceSubmodelServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MobileDeviceSubmodelServiceSettings
     extends ClientSettings<MobileDeviceSubmodelServiceSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/NetworkServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/NetworkServiceClient.java
index 9b55c154c09d..e5c5e154543f 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/NetworkServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/NetworkServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -136,6 +137,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkServiceClient implements BackgroundResource {
   private final NetworkServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/NetworkServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/NetworkServiceSettings.java
index 2b87891ff622..1ab30d9ec2a2 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/NetworkServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/NetworkServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkServiceSettings extends ClientSettings<NetworkServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OperatingSystemServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OperatingSystemServiceClient.java
index 284638041d52..19bc0d983e19 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OperatingSystemServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OperatingSystemServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OperatingSystemServiceClient implements BackgroundResource {
   private final OperatingSystemServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OperatingSystemServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OperatingSystemServiceSettings.java
index e4590c2d9221..5a6ef47aa5d0 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OperatingSystemServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OperatingSystemServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OperatingSystemServiceSettings extends ClientSettings<OperatingSystemServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OperatingSystemVersionServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OperatingSystemVersionServiceClient.java
index fb0195dc1e0c..a1c621d7a898 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OperatingSystemVersionServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OperatingSystemVersionServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OperatingSystemVersionServiceClient implements BackgroundResource {
   private final OperatingSystemVersionServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OperatingSystemVersionServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OperatingSystemVersionServiceSettings.java
index 53daf6bdadfe..13d5d22aad88 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OperatingSystemVersionServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OperatingSystemVersionServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OperatingSystemVersionServiceSettings
     extends ClientSettings<OperatingSystemVersionServiceSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OrderServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OrderServiceClient.java
index 22340f1b2503..47285989f906 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OrderServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OrderServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrderServiceClient implements BackgroundResource {
   private final OrderServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OrderServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OrderServiceSettings.java
index 88e4dd2dc708..789992c6e926 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OrderServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/OrderServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrderServiceSettings extends ClientSettings<OrderServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PlacementServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PlacementServiceClient.java
index 32d6d5e29a80..9b911ba13e1c 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PlacementServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PlacementServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -271,6 +272,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PlacementServiceClient implements BackgroundResource {
   private final PlacementServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PlacementServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PlacementServiceSettings.java
index b15832ce3fbf..2b8c6fcdefdd 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PlacementServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PlacementServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PlacementServiceSettings extends ClientSettings<PlacementServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PrivateAuctionDealServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PrivateAuctionDealServiceClient.java
index b9a3c8efe5e7..ce72a8e4fb79 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PrivateAuctionDealServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PrivateAuctionDealServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -184,6 +185,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PrivateAuctionDealServiceClient implements BackgroundResource {
   private final PrivateAuctionDealServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PrivateAuctionDealServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PrivateAuctionDealServiceSettings.java
index 61687f15d5f7..a7693ef58d82 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PrivateAuctionDealServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PrivateAuctionDealServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PrivateAuctionDealServiceSettings
     extends ClientSettings<PrivateAuctionDealServiceSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PrivateAuctionServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PrivateAuctionServiceClient.java
index b4be2955dabe..d296098c6c17 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PrivateAuctionServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PrivateAuctionServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -183,6 +184,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PrivateAuctionServiceClient implements BackgroundResource {
   private final PrivateAuctionServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PrivateAuctionServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PrivateAuctionServiceSettings.java
index 80469a84ef1b..9070426fc31f 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PrivateAuctionServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/PrivateAuctionServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PrivateAuctionServiceSettings extends ClientSettings<PrivateAuctionServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ProgrammaticBuyerServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ProgrammaticBuyerServiceClient.java
index c02039617f96..7e989c43b86d 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ProgrammaticBuyerServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ProgrammaticBuyerServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProgrammaticBuyerServiceClient implements BackgroundResource {
   private final ProgrammaticBuyerServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ProgrammaticBuyerServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ProgrammaticBuyerServiceSettings.java
index 8890b1831144..f6293a1e3a3b 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ProgrammaticBuyerServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ProgrammaticBuyerServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProgrammaticBuyerServiceSettings
     extends ClientSettings<ProgrammaticBuyerServiceSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ReportServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ReportServiceClient.java
index a75aba7a9388..27aa586356eb 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ReportServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ReportServiceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -222,6 +223,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReportServiceClient implements BackgroundResource {
   private final ReportServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ReportServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ReportServiceSettings.java
index 70c3c0186ec6..27c02d6375b9 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ReportServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/ReportServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReportServiceSettings extends ClientSettings<ReportServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/RichMediaAdsCompanyServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/RichMediaAdsCompanyServiceClient.java
index bc3ce7ad9213..a946263069b1 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/RichMediaAdsCompanyServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/RichMediaAdsCompanyServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RichMediaAdsCompanyServiceClient implements BackgroundResource {
   private final RichMediaAdsCompanyServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/RichMediaAdsCompanyServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/RichMediaAdsCompanyServiceSettings.java
index ff8d4b1b2163..8b22cf095af1 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/RichMediaAdsCompanyServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/RichMediaAdsCompanyServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RichMediaAdsCompanyServiceSettings
     extends ClientSettings<RichMediaAdsCompanyServiceSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/RoleServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/RoleServiceClient.java
index 56e740a284d1..29f01c80dbf5 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/RoleServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/RoleServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RoleServiceClient implements BackgroundResource {
   private final RoleServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/RoleServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/RoleServiceSettings.java
index e8326cb63bea..46d3413ca6eb 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/RoleServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/RoleServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RoleServiceSettings extends ClientSettings<RoleServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/SiteServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/SiteServiceClient.java
index 7dd0e52c5ef5..778400b60c7a 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/SiteServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/SiteServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -249,6 +250,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SiteServiceClient implements BackgroundResource {
   private final SiteServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/SiteServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/SiteServiceSettings.java
index 3160b4901533..e4c731fc95b5 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/SiteServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/SiteServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SiteServiceSettings extends ClientSettings<SiteServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/TaxonomyCategoryServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/TaxonomyCategoryServiceClient.java
index 7f1e6ead2a8c..81f20ec6f6a6 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/TaxonomyCategoryServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/TaxonomyCategoryServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TaxonomyCategoryServiceClient implements BackgroundResource {
   private final TaxonomyCategoryServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/TaxonomyCategoryServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/TaxonomyCategoryServiceSettings.java
index 8da1a7aa62bd..01a7c279e0d4 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/TaxonomyCategoryServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/TaxonomyCategoryServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TaxonomyCategoryServiceSettings
     extends ClientSettings<TaxonomyCategoryServiceSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/TeamServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/TeamServiceClient.java
index d2281d0d375b..1266cc188371 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/TeamServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/TeamServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -249,6 +250,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TeamServiceClient implements BackgroundResource {
   private final TeamServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/TeamServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/TeamServiceSettings.java
index 7d0c225775f8..b6ddd2181fe0 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/TeamServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/TeamServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TeamServiceSettings extends ClientSettings<TeamServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/UserServiceClient.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/UserServiceClient.java
index 6ff04b388393..69683db37485 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/UserServiceClient.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/UserServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserServiceClient implements BackgroundResource {
   private final UserServiceSettings settings;
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/UserServiceSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/UserServiceSettings.java
index beaae4e80e2b..267e91e34350 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/UserServiceSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/UserServiceSettings.java
@@ -29,6 +29,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -79,6 +80,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserServiceSettings extends ClientSettings<UserServiceSettings> {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdBreakServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdBreakServiceStub.java
index cc5a795690e5..c0b68c9a605e 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdBreakServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdBreakServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AdBreakServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdBreakServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdBreakServiceStubSettings.java
index a6e01673b88b..a165afcd1db5 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdBreakServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdBreakServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AdBreakServiceStubSettings extends StubSettings<AdBreakServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdReviewCenterAdServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdReviewCenterAdServiceStub.java
index 4c961dd304d8..326312dd957c 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdReviewCenterAdServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdReviewCenterAdServiceStub.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AdReviewCenterAdServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdReviewCenterAdServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdReviewCenterAdServiceStubSettings.java
index 449710bbb6d7..e1942d201b89 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdReviewCenterAdServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdReviewCenterAdServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -140,6 +141,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AdReviewCenterAdServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdUnitServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdUnitServiceStub.java
index 7f489ebd414e..b51f7b1b7de8 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdUnitServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdUnitServiceStub.java
@@ -40,6 +40,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AdUnitServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdUnitServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdUnitServiceStubSettings.java
index 462c22a3c09c..ba7f9b128c5a 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdUnitServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AdUnitServiceStubSettings.java
@@ -68,6 +68,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AdUnitServiceStubSettings extends StubSettings<AdUnitServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ApplicationServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ApplicationServiceStub.java
index 19b91cdb03c0..6e1e3c399de4 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ApplicationServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ApplicationServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ApplicationServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ApplicationServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ApplicationServiceStubSettings.java
index 5b7b99784300..58630eee2ad3 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ApplicationServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ApplicationServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ApplicationServiceStubSettings extends StubSettings<ApplicationServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AudienceSegmentServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AudienceSegmentServiceStub.java
index 92e1f9ba0820..bf8b285d33a2 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AudienceSegmentServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AudienceSegmentServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AudienceSegmentServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AudienceSegmentServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AudienceSegmentServiceStubSettings.java
index 7a92dcc6f598..9df7b91b80c6 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AudienceSegmentServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/AudienceSegmentServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AudienceSegmentServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BandwidthGroupServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BandwidthGroupServiceStub.java
index fb208e8fd91d..e0aa9f853ff3 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BandwidthGroupServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BandwidthGroupServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BandwidthGroupServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BandwidthGroupServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BandwidthGroupServiceStubSettings.java
index 5a0fbeb6034f..1f49f9b5ed15 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BandwidthGroupServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BandwidthGroupServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BandwidthGroupServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BrowserLanguageServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BrowserLanguageServiceStub.java
index 6d3f0e62c9bb..ad669a054313 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BrowserLanguageServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BrowserLanguageServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BrowserLanguageServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BrowserLanguageServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BrowserLanguageServiceStubSettings.java
index a2f11ac6e7bf..5c23b5b2566e 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BrowserLanguageServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BrowserLanguageServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BrowserLanguageServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BrowserServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BrowserServiceStub.java
index 07312bea8a1f..f17157483fe8 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BrowserServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BrowserServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BrowserServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BrowserServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BrowserServiceStubSettings.java
index 33be088b10bf..4b510b05d15f 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BrowserServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/BrowserServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BrowserServiceStubSettings extends StubSettings<BrowserServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CmsMetadataKeyServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CmsMetadataKeyServiceStub.java
index 474af166a73f..42db3f32f759 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CmsMetadataKeyServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CmsMetadataKeyServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CmsMetadataKeyServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CmsMetadataKeyServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CmsMetadataKeyServiceStubSettings.java
index 8b3dd7bb29a1..e8961b3e09f5 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CmsMetadataKeyServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CmsMetadataKeyServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CmsMetadataKeyServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CmsMetadataValueServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CmsMetadataValueServiceStub.java
index 4764b76f7f87..c1f92442c0a5 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CmsMetadataValueServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CmsMetadataValueServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CmsMetadataValueServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CmsMetadataValueServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CmsMetadataValueServiceStubSettings.java
index a1d73a7be13a..66ce3c3e4796 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CmsMetadataValueServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CmsMetadataValueServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CmsMetadataValueServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CompanyServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CompanyServiceStub.java
index 71f19234b26d..07353fa492d4 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CompanyServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CompanyServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CompanyServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CompanyServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CompanyServiceStubSettings.java
index b3305740f209..dab36550d1bc 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CompanyServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CompanyServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CompanyServiceStubSettings extends StubSettings<CompanyServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContactServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContactServiceStub.java
index 77e2c0f92fd8..ca2688ef1831 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContactServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContactServiceStub.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ContactServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContactServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContactServiceStubSettings.java
index d5a9f0786215..7a4c2dbcf049 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContactServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContactServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ContactServiceStubSettings extends StubSettings<ContactServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentBundleServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentBundleServiceStub.java
index e1987459df6e..6991386f2a1b 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentBundleServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentBundleServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ContentBundleServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentBundleServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentBundleServiceStubSettings.java
index 0a56844afb40..7ac38965341d 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentBundleServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentBundleServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ContentBundleServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentLabelServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentLabelServiceStub.java
index 12365945caeb..15ce5f3765bf 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentLabelServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentLabelServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ContentLabelServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentLabelServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentLabelServiceStubSettings.java
index ed10dcc48249..6139a92624d4 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentLabelServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentLabelServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ContentLabelServiceStubSettings extends StubSettings<ContentLabelServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentServiceStub.java
index e9e147e6e9a7..ad4c38fc2064 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ContentServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentServiceStubSettings.java
index b17885f5edd7..77407be0f2c3 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ContentServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ContentServiceStubSettings extends StubSettings<ContentServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CreativeTemplateServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CreativeTemplateServiceStub.java
index 5b1a7d952c88..52da643c2d94 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CreativeTemplateServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CreativeTemplateServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CreativeTemplateServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CreativeTemplateServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CreativeTemplateServiceStubSettings.java
index 958c03142202..e61331335886 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CreativeTemplateServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CreativeTemplateServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CreativeTemplateServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomFieldServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomFieldServiceStub.java
index 560dd3d973b4..878450655c1b 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomFieldServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomFieldServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CustomFieldServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomFieldServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomFieldServiceStubSettings.java
index 1fba62141b58..034f93e3aa90 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomFieldServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomFieldServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CustomFieldServiceStubSettings extends StubSettings<CustomFieldServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomTargetingKeyServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomTargetingKeyServiceStub.java
index 95e682847c89..b25c2d9c9056 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomTargetingKeyServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomTargetingKeyServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CustomTargetingKeyServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomTargetingKeyServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomTargetingKeyServiceStubSettings.java
index 0317ca4062cd..68fbd7b4bafe 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomTargetingKeyServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomTargetingKeyServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CustomTargetingKeyServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomTargetingValueServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomTargetingValueServiceStub.java
index 2c57b2142c02..df40cdab5272 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomTargetingValueServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomTargetingValueServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CustomTargetingValueServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomTargetingValueServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomTargetingValueServiceStubSettings.java
index 89fe8f7bd846..67250d092e4e 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomTargetingValueServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/CustomTargetingValueServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CustomTargetingValueServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceCapabilityServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceCapabilityServiceStub.java
index a3c57573a6b1..a163910003c5 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceCapabilityServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceCapabilityServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DeviceCapabilityServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceCapabilityServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceCapabilityServiceStubSettings.java
index dcaf64714179..7567eaf1d85e 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceCapabilityServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceCapabilityServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DeviceCapabilityServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceCategoryServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceCategoryServiceStub.java
index f9494d208337..bb1cccb5f9a7 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceCategoryServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceCategoryServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DeviceCategoryServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceCategoryServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceCategoryServiceStubSettings.java
index 5c02dd34f46d..80f4864abb71 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceCategoryServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceCategoryServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DeviceCategoryServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceManufacturerServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceManufacturerServiceStub.java
index 0634bd59792c..19a01bd285ee 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceManufacturerServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceManufacturerServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DeviceManufacturerServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceManufacturerServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceManufacturerServiceStubSettings.java
index 7ceae24fc4cf..995876a6cbc6 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceManufacturerServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/DeviceManufacturerServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DeviceManufacturerServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/EntitySignalsMappingServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/EntitySignalsMappingServiceStub.java
index 52a378dd5df5..014d196eee10 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/EntitySignalsMappingServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/EntitySignalsMappingServiceStub.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EntitySignalsMappingServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/EntitySignalsMappingServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/EntitySignalsMappingServiceStubSettings.java
index a14a6f4d14ba..ca1dd2acfa62 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/EntitySignalsMappingServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/EntitySignalsMappingServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EntitySignalsMappingServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/GeoTargetServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/GeoTargetServiceStub.java
index 05870691f567..e93a44974f08 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/GeoTargetServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/GeoTargetServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GeoTargetServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/GeoTargetServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/GeoTargetServiceStubSettings.java
index 36421848395e..f6f160f6aa68 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/GeoTargetServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/GeoTargetServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GeoTargetServiceStubSettings extends StubSettings<GeoTargetServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdBreakServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdBreakServiceCallableFactory.java
index 52d9f5c2f563..7974cb4ed687 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdBreakServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdBreakServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAdBreakServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdBreakServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdBreakServiceStub.java
index a70b251bf6f5..e8cb8e1e4fb7 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdBreakServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdBreakServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAdBreakServiceStub extends AdBreakServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdReviewCenterAdServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdReviewCenterAdServiceCallableFactory.java
index eb2eb2cb508b..64373562415f 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdReviewCenterAdServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdReviewCenterAdServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAdReviewCenterAdServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdReviewCenterAdServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdReviewCenterAdServiceStub.java
index 702805767232..cfdfa77fa76e 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdReviewCenterAdServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdReviewCenterAdServiceStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAdReviewCenterAdServiceStub extends AdReviewCenterAdServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdUnitServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdUnitServiceCallableFactory.java
index f13bfa69039d..e9647e21556f 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdUnitServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdUnitServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAdUnitServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdUnitServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdUnitServiceStub.java
index 6c92f27ab284..fcab860cc411 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdUnitServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAdUnitServiceStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAdUnitServiceStub extends AdUnitServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonApplicationServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonApplicationServiceCallableFactory.java
index 9b37ea699690..97ef5da92687 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonApplicationServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonApplicationServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApplicationServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonApplicationServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonApplicationServiceStub.java
index 78c1dffae6f1..1b0024189055 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonApplicationServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonApplicationServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApplicationServiceStub extends ApplicationServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAudienceSegmentServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAudienceSegmentServiceCallableFactory.java
index eb33076844f1..99c973fdc43f 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAudienceSegmentServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAudienceSegmentServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAudienceSegmentServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAudienceSegmentServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAudienceSegmentServiceStub.java
index 40616c43d8db..9391f89490b3 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAudienceSegmentServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonAudienceSegmentServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAudienceSegmentServiceStub extends AudienceSegmentServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBandwidthGroupServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBandwidthGroupServiceCallableFactory.java
index a46470591664..9dc1af3257ac 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBandwidthGroupServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBandwidthGroupServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBandwidthGroupServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBandwidthGroupServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBandwidthGroupServiceStub.java
index 45cbfde020ba..d444ef9b0416 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBandwidthGroupServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBandwidthGroupServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBandwidthGroupServiceStub extends BandwidthGroupServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBrowserLanguageServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBrowserLanguageServiceCallableFactory.java
index 8358d98da830..80a3c7342092 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBrowserLanguageServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBrowserLanguageServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBrowserLanguageServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBrowserLanguageServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBrowserLanguageServiceStub.java
index 085f444df3d4..ca08fdab8d8a 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBrowserLanguageServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBrowserLanguageServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBrowserLanguageServiceStub extends BrowserLanguageServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBrowserServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBrowserServiceCallableFactory.java
index 01cd3b5f5c60..e1277b9f2b77 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBrowserServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBrowserServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBrowserServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBrowserServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBrowserServiceStub.java
index 06e004758d42..6195005c6f4f 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBrowserServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonBrowserServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBrowserServiceStub extends BrowserServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCmsMetadataKeyServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCmsMetadataKeyServiceCallableFactory.java
index 38e5347f5725..db11eb10f42e 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCmsMetadataKeyServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCmsMetadataKeyServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCmsMetadataKeyServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCmsMetadataKeyServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCmsMetadataKeyServiceStub.java
index 64d1be677f7e..0c3068abb5bc 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCmsMetadataKeyServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCmsMetadataKeyServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCmsMetadataKeyServiceStub extends CmsMetadataKeyServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCmsMetadataValueServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCmsMetadataValueServiceCallableFactory.java
index 52b79795776a..e4dde3c9e2fa 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCmsMetadataValueServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCmsMetadataValueServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCmsMetadataValueServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCmsMetadataValueServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCmsMetadataValueServiceStub.java
index a811f554e8e5..2cd96cabf267 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCmsMetadataValueServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCmsMetadataValueServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCmsMetadataValueServiceStub extends CmsMetadataValueServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCompanyServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCompanyServiceCallableFactory.java
index 4ea57d8f7efd..59289d603ce1 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCompanyServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCompanyServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCompanyServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCompanyServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCompanyServiceStub.java
index c8c40d8c035b..a105c5deea57 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCompanyServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCompanyServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCompanyServiceStub extends CompanyServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContactServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContactServiceCallableFactory.java
index 481033f7c0f6..8adf450d97ea 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContactServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContactServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonContactServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContactServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContactServiceStub.java
index f4640bfe7aa2..e09236418a38 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContactServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContactServiceStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonContactServiceStub extends ContactServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentBundleServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentBundleServiceCallableFactory.java
index 1038ac6e562f..ea264d556a43 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentBundleServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentBundleServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonContentBundleServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentBundleServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentBundleServiceStub.java
index fef0c3faa152..fec04b7d19c3 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentBundleServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentBundleServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonContentBundleServiceStub extends ContentBundleServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentLabelServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentLabelServiceCallableFactory.java
index bdd042687f75..c179b3177803 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentLabelServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentLabelServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonContentLabelServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentLabelServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentLabelServiceStub.java
index 6c5a4ed46707..069b66134e12 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentLabelServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentLabelServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonContentLabelServiceStub extends ContentLabelServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentServiceCallableFactory.java
index 0a0d35a0b995..b9399d04f4c1 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonContentServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentServiceStub.java
index 4375fa29dca2..b77ecb3e5c5c 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonContentServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonContentServiceStub extends ContentServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCreativeTemplateServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCreativeTemplateServiceCallableFactory.java
index 2afee84a89b4..20d7db8bc9bd 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCreativeTemplateServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCreativeTemplateServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCreativeTemplateServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCreativeTemplateServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCreativeTemplateServiceStub.java
index 453f93cab4ba..952857549a6b 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCreativeTemplateServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCreativeTemplateServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCreativeTemplateServiceStub extends CreativeTemplateServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomFieldServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomFieldServiceCallableFactory.java
index acd02de7b9be..dd662981c2a4 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomFieldServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomFieldServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCustomFieldServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomFieldServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomFieldServiceStub.java
index 4f0691a3f058..998d851bd031 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomFieldServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomFieldServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCustomFieldServiceStub extends CustomFieldServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomTargetingKeyServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomTargetingKeyServiceCallableFactory.java
index 192688bc8e04..5f91143ca373 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomTargetingKeyServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomTargetingKeyServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCustomTargetingKeyServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomTargetingKeyServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomTargetingKeyServiceStub.java
index f0c31a200d14..72bf8d582d84 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomTargetingKeyServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomTargetingKeyServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCustomTargetingKeyServiceStub extends CustomTargetingKeyServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomTargetingValueServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomTargetingValueServiceCallableFactory.java
index 41a3b3d7bde8..59a1b9ffaf3d 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomTargetingValueServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomTargetingValueServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCustomTargetingValueServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomTargetingValueServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomTargetingValueServiceStub.java
index 44b97bf937f5..7974cbb22eb0 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomTargetingValueServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonCustomTargetingValueServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCustomTargetingValueServiceStub extends CustomTargetingValueServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceCapabilityServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceCapabilityServiceCallableFactory.java
index a33a62914268..97e8dbd55edc 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceCapabilityServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceCapabilityServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeviceCapabilityServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceCapabilityServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceCapabilityServiceStub.java
index a64409d4422e..e16ee699c37d 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceCapabilityServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceCapabilityServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeviceCapabilityServiceStub extends DeviceCapabilityServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceCategoryServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceCategoryServiceCallableFactory.java
index ed1be4794b78..c6170e76d695 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceCategoryServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceCategoryServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeviceCategoryServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceCategoryServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceCategoryServiceStub.java
index 5fef442d1f6a..91bac541a508 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceCategoryServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceCategoryServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeviceCategoryServiceStub extends DeviceCategoryServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceManufacturerServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceManufacturerServiceCallableFactory.java
index 54cf8605e063..8205bfd26b1e 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceManufacturerServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceManufacturerServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeviceManufacturerServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceManufacturerServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceManufacturerServiceStub.java
index 7a94acc346af..c63f55df0f77 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceManufacturerServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonDeviceManufacturerServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeviceManufacturerServiceStub extends DeviceManufacturerServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonEntitySignalsMappingServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonEntitySignalsMappingServiceCallableFactory.java
index 1f32d2d45961..e38eee62b9dc 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonEntitySignalsMappingServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonEntitySignalsMappingServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEntitySignalsMappingServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonEntitySignalsMappingServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonEntitySignalsMappingServiceStub.java
index 968a0046fe87..0ce44fc423a1 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonEntitySignalsMappingServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonEntitySignalsMappingServiceStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEntitySignalsMappingServiceStub extends EntitySignalsMappingServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonGeoTargetServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonGeoTargetServiceCallableFactory.java
index f62a0306a2d7..3ca19ad92327 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonGeoTargetServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonGeoTargetServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGeoTargetServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonGeoTargetServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonGeoTargetServiceStub.java
index 034beb7d0758..5029b8b25eed 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonGeoTargetServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonGeoTargetServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGeoTargetServiceStub extends GeoTargetServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLabelServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLabelServiceCallableFactory.java
index 174150c949e8..0a92188b2493 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLabelServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLabelServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLabelServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLabelServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLabelServiceStub.java
index 08c6c25b1dcd..89751bebb4b3 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLabelServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLabelServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLabelServiceStub extends LabelServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLineItemServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLineItemServiceCallableFactory.java
index 362528c0f6cd..43b093875f99 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLineItemServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLineItemServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLineItemServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLineItemServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLineItemServiceStub.java
index 82dbdae548b6..34cade688aa6 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLineItemServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLineItemServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLineItemServiceStub extends LineItemServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLinkedDeviceServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLinkedDeviceServiceCallableFactory.java
index ef84f0b520d0..166538fc08ea 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLinkedDeviceServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLinkedDeviceServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLinkedDeviceServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLinkedDeviceServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLinkedDeviceServiceStub.java
index 725c68f502f4..c3af68316998 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLinkedDeviceServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonLinkedDeviceServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLinkedDeviceServiceStub extends LinkedDeviceServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMcmEarningsServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMcmEarningsServiceCallableFactory.java
index 24202555b587..0a3779638088 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMcmEarningsServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMcmEarningsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMcmEarningsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMcmEarningsServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMcmEarningsServiceStub.java
index 4e652c808076..66a0e38eee9c 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMcmEarningsServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMcmEarningsServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMcmEarningsServiceStub extends McmEarningsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileCarrierServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileCarrierServiceCallableFactory.java
index 7f40962afe40..b24a1895726d 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileCarrierServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileCarrierServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMobileCarrierServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileCarrierServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileCarrierServiceStub.java
index 4ea038575bd2..52574571bcaf 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileCarrierServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileCarrierServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMobileCarrierServiceStub extends MobileCarrierServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileDeviceServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileDeviceServiceCallableFactory.java
index 78c7db3a79eb..82500eb07f95 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileDeviceServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileDeviceServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMobileDeviceServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileDeviceServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileDeviceServiceStub.java
index 1429f2ea1590..373ab63d0198 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileDeviceServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileDeviceServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMobileDeviceServiceStub extends MobileDeviceServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileDeviceSubmodelServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileDeviceSubmodelServiceCallableFactory.java
index bd74a7528773..9908f0f5114b 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileDeviceSubmodelServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileDeviceSubmodelServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMobileDeviceSubmodelServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileDeviceSubmodelServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileDeviceSubmodelServiceStub.java
index d5d66e8f4c60..17d2084fe32b 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileDeviceSubmodelServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonMobileDeviceSubmodelServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMobileDeviceSubmodelServiceStub extends MobileDeviceSubmodelServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonNetworkServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonNetworkServiceCallableFactory.java
index 7d26a72d4031..81eb9b69d26f 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonNetworkServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonNetworkServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNetworkServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonNetworkServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonNetworkServiceStub.java
index b77e448997a7..c33332968e8a 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonNetworkServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonNetworkServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNetworkServiceStub extends NetworkServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOperatingSystemServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOperatingSystemServiceCallableFactory.java
index 9c2cbf42555d..24f73cb45b20 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOperatingSystemServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOperatingSystemServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOperatingSystemServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOperatingSystemServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOperatingSystemServiceStub.java
index a985088f8cea..f40960807685 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOperatingSystemServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOperatingSystemServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOperatingSystemServiceStub extends OperatingSystemServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOperatingSystemVersionServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOperatingSystemVersionServiceCallableFactory.java
index eece964c6a50..96b050515142 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOperatingSystemVersionServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOperatingSystemVersionServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOperatingSystemVersionServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOperatingSystemVersionServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOperatingSystemVersionServiceStub.java
index 95fb30e5a887..c0c3665dd0ac 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOperatingSystemVersionServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOperatingSystemVersionServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOperatingSystemVersionServiceStub extends OperatingSystemVersionServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOrderServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOrderServiceCallableFactory.java
index 09b19eb77c7b..624cd1558c5e 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOrderServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOrderServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOrderServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOrderServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOrderServiceStub.java
index e61202f3bbcc..5205c60f94d8 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOrderServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonOrderServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOrderServiceStub extends OrderServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPlacementServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPlacementServiceCallableFactory.java
index 0eefcd459430..2fddc5bf6366 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPlacementServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPlacementServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPlacementServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPlacementServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPlacementServiceStub.java
index 00a8eb3983e4..aaa788b80423 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPlacementServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPlacementServiceStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPlacementServiceStub extends PlacementServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPrivateAuctionDealServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPrivateAuctionDealServiceCallableFactory.java
index b963942ed6f9..7f6f0a7a870e 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPrivateAuctionDealServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPrivateAuctionDealServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPrivateAuctionDealServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPrivateAuctionDealServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPrivateAuctionDealServiceStub.java
index 3901486178ec..d0e62f6f4c1d 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPrivateAuctionDealServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPrivateAuctionDealServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPrivateAuctionDealServiceStub extends PrivateAuctionDealServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPrivateAuctionServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPrivateAuctionServiceCallableFactory.java
index 9d77fc21c6ae..3654bdcb8f26 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPrivateAuctionServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPrivateAuctionServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPrivateAuctionServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPrivateAuctionServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPrivateAuctionServiceStub.java
index 1c2f79669992..0dcebd2c6e57 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPrivateAuctionServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonPrivateAuctionServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPrivateAuctionServiceStub extends PrivateAuctionServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonProgrammaticBuyerServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonProgrammaticBuyerServiceCallableFactory.java
index d68154c04575..627cd4b9c487 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonProgrammaticBuyerServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonProgrammaticBuyerServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProgrammaticBuyerServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonProgrammaticBuyerServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonProgrammaticBuyerServiceStub.java
index 94785aec28ea..9f577c71e892 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonProgrammaticBuyerServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonProgrammaticBuyerServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProgrammaticBuyerServiceStub extends ProgrammaticBuyerServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonReportServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonReportServiceCallableFactory.java
index 273ada07d795..48e6705f72d7 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonReportServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonReportServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonReportServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonReportServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonReportServiceStub.java
index afdf8337b53c..94f7cd33f6d6 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonReportServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonReportServiceStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonReportServiceStub extends ReportServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonRichMediaAdsCompanyServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonRichMediaAdsCompanyServiceCallableFactory.java
index 39af8625e100..d7a02415b1db 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonRichMediaAdsCompanyServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonRichMediaAdsCompanyServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRichMediaAdsCompanyServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonRichMediaAdsCompanyServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonRichMediaAdsCompanyServiceStub.java
index aca002757588..e761430c2893 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonRichMediaAdsCompanyServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonRichMediaAdsCompanyServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRichMediaAdsCompanyServiceStub extends RichMediaAdsCompanyServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonRoleServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonRoleServiceCallableFactory.java
index 6fac35ad2155..f12ba9b94883 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonRoleServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonRoleServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRoleServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonRoleServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonRoleServiceStub.java
index bf8361b595c0..a057f8097997 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonRoleServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonRoleServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRoleServiceStub extends RoleServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonSiteServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonSiteServiceCallableFactory.java
index eaf291c6dbea..30355c9561de 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonSiteServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonSiteServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSiteServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonSiteServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonSiteServiceStub.java
index 8f019459e3db..be4104b7c7ee 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonSiteServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonSiteServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSiteServiceStub extends SiteServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonTaxonomyCategoryServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonTaxonomyCategoryServiceCallableFactory.java
index 4648372a1307..a0bab9732c16 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonTaxonomyCategoryServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonTaxonomyCategoryServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTaxonomyCategoryServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonTaxonomyCategoryServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonTaxonomyCategoryServiceStub.java
index ead78eeb0c3c..499401ce7c71 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonTaxonomyCategoryServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonTaxonomyCategoryServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTaxonomyCategoryServiceStub extends TaxonomyCategoryServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonTeamServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonTeamServiceCallableFactory.java
index 6a6935469e77..22c534da3781 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonTeamServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonTeamServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTeamServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonTeamServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonTeamServiceStub.java
index f3090a126b41..b06e06de9931 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonTeamServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonTeamServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTeamServiceStub extends TeamServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonUserServiceCallableFactory.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonUserServiceCallableFactory.java
index 71bec5d522d9..e8ce63ac99ba 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonUserServiceCallableFactory.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonUserServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonUserServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonUserServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonUserServiceStub.java
index d4d7352cc90c..b7142c7d42e3 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonUserServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/HttpJsonUserServiceStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonUserServiceStub extends UserServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LabelServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LabelServiceStub.java
index 8b562f5d44a1..0d60e2a90e4a 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LabelServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LabelServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LabelServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LabelServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LabelServiceStubSettings.java
index 169d1d09ad79..fb4045333ccb 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LabelServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LabelServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LabelServiceStubSettings extends StubSettings<LabelServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LineItemServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LineItemServiceStub.java
index 291d6e70246d..0d43abbf0d52 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LineItemServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LineItemServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LineItemServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LineItemServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LineItemServiceStubSettings.java
index 5a1bcd1a542d..a3a394c763a8 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LineItemServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LineItemServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LineItemServiceStubSettings extends StubSettings<LineItemServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LinkedDeviceServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LinkedDeviceServiceStub.java
index abbfa32aa643..ece4600a0efe 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LinkedDeviceServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LinkedDeviceServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LinkedDeviceServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LinkedDeviceServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LinkedDeviceServiceStubSettings.java
index bf40629f2934..807ef6c2f47b 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LinkedDeviceServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/LinkedDeviceServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LinkedDeviceServiceStubSettings extends StubSettings<LinkedDeviceServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/McmEarningsServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/McmEarningsServiceStub.java
index f5bd4db93fdc..5f7e96ac1820 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/McmEarningsServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/McmEarningsServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class McmEarningsServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/McmEarningsServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/McmEarningsServiceStubSettings.java
index 9ce690c7686d..8d0abd44cb59 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/McmEarningsServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/McmEarningsServiceStubSettings.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class McmEarningsServiceStubSettings extends StubSettings<McmEarningsServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileCarrierServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileCarrierServiceStub.java
index 4e8b37ef6650..70a57357aef0 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileCarrierServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileCarrierServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MobileCarrierServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileCarrierServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileCarrierServiceStubSettings.java
index 7b8e51b708e7..4d4911c84d27 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileCarrierServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileCarrierServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MobileCarrierServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileDeviceServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileDeviceServiceStub.java
index d9eb78108d21..3619aaa57c52 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileDeviceServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileDeviceServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MobileDeviceServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileDeviceServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileDeviceServiceStubSettings.java
index 7c4fb5dc29d2..5d949e625041 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileDeviceServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileDeviceServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MobileDeviceServiceStubSettings extends StubSettings<MobileDeviceServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileDeviceSubmodelServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileDeviceSubmodelServiceStub.java
index abeb1ed0647a..223de9d042f3 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileDeviceSubmodelServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileDeviceSubmodelServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MobileDeviceSubmodelServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileDeviceSubmodelServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileDeviceSubmodelServiceStubSettings.java
index 5e20d5b33195..a047bf2071e6 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileDeviceSubmodelServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/MobileDeviceSubmodelServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MobileDeviceSubmodelServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/NetworkServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/NetworkServiceStub.java
index 3babac3f805f..ed41dea31928 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/NetworkServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/NetworkServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NetworkServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/NetworkServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/NetworkServiceStubSettings.java
index 821cc6033dd6..0ffebc492bd9 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/NetworkServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/NetworkServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NetworkServiceStubSettings extends StubSettings<NetworkServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OperatingSystemServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OperatingSystemServiceStub.java
index dc2d700cd68d..efae6ff8fe0e 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OperatingSystemServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OperatingSystemServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class OperatingSystemServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OperatingSystemServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OperatingSystemServiceStubSettings.java
index 6c1227e4fe27..897ac71403cf 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OperatingSystemServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OperatingSystemServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class OperatingSystemServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OperatingSystemVersionServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OperatingSystemVersionServiceStub.java
index 2d17fdd9ef94..3c755da83488 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OperatingSystemVersionServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OperatingSystemVersionServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class OperatingSystemVersionServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OperatingSystemVersionServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OperatingSystemVersionServiceStubSettings.java
index 961703c87c97..7bf50d9c991b 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OperatingSystemVersionServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OperatingSystemVersionServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class OperatingSystemVersionServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OrderServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OrderServiceStub.java
index 6c6b26d1b729..9a91551ec1eb 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OrderServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OrderServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class OrderServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OrderServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OrderServiceStubSettings.java
index a1ee2ca53c0d..b06270afe39a 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OrderServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/OrderServiceStubSettings.java
@@ -53,6 +53,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class OrderServiceStubSettings extends StubSettings<OrderServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PlacementServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PlacementServiceStub.java
index 29256ec14466..16e7a73a7efb 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PlacementServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PlacementServiceStub.java
@@ -37,6 +37,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PlacementServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PlacementServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PlacementServiceStubSettings.java
index 03542f02acf7..5da8195616c3 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PlacementServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PlacementServiceStubSettings.java
@@ -64,6 +64,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PlacementServiceStubSettings extends StubSettings<PlacementServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PrivateAuctionDealServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PrivateAuctionDealServiceStub.java
index cad39b560459..6a5eb3f10a68 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PrivateAuctionDealServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PrivateAuctionDealServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PrivateAuctionDealServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PrivateAuctionDealServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PrivateAuctionDealServiceStubSettings.java
index b2eca40588b6..e65d5c113c21 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PrivateAuctionDealServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PrivateAuctionDealServiceStubSettings.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -106,6 +107,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PrivateAuctionDealServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PrivateAuctionServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PrivateAuctionServiceStub.java
index 093bb8f62d1b..103445e215ff 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PrivateAuctionServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PrivateAuctionServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PrivateAuctionServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PrivateAuctionServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PrivateAuctionServiceStubSettings.java
index 4628d0ef540a..fb20ff6bb4eb 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PrivateAuctionServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/PrivateAuctionServiceStubSettings.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -106,6 +107,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PrivateAuctionServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ProgrammaticBuyerServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ProgrammaticBuyerServiceStub.java
index 6f974f48cd72..006e7b724d21 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ProgrammaticBuyerServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ProgrammaticBuyerServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ProgrammaticBuyerServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ProgrammaticBuyerServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ProgrammaticBuyerServiceStubSettings.java
index b7cfe7b3308e..7ae02f8b8dc5 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ProgrammaticBuyerServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ProgrammaticBuyerServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ProgrammaticBuyerServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ReportServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ReportServiceStub.java
index 3219e24b317b..4afc603f9295 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ReportServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ReportServiceStub.java
@@ -36,6 +36,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ReportServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ReportServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ReportServiceStubSettings.java
index 0f67c45573c1..d812a9ff0b6d 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ReportServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/ReportServiceStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ReportServiceStubSettings extends StubSettings<ReportServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/RichMediaAdsCompanyServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/RichMediaAdsCompanyServiceStub.java
index ae8da7c92ab8..504b14ec8b5b 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/RichMediaAdsCompanyServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/RichMediaAdsCompanyServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RichMediaAdsCompanyServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/RichMediaAdsCompanyServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/RichMediaAdsCompanyServiceStubSettings.java
index 420e6c0f835d..50301ee036a6 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/RichMediaAdsCompanyServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/RichMediaAdsCompanyServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RichMediaAdsCompanyServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/RoleServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/RoleServiceStub.java
index 6220e188f670..6501e43799df 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/RoleServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/RoleServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RoleServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/RoleServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/RoleServiceStubSettings.java
index 22c8d00d0281..9499c2fbe768 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/RoleServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/RoleServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RoleServiceStubSettings extends StubSettings<RoleServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/SiteServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/SiteServiceStub.java
index b479edb152e6..027038cdf58e 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/SiteServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/SiteServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SiteServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/SiteServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/SiteServiceStubSettings.java
index 9f915ddec040..909f3f90db0b 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/SiteServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/SiteServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SiteServiceStubSettings extends StubSettings<SiteServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/TaxonomyCategoryServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/TaxonomyCategoryServiceStub.java
index 04a80ecb2822..00f959f7e956 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/TaxonomyCategoryServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/TaxonomyCategoryServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TaxonomyCategoryServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/TaxonomyCategoryServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/TaxonomyCategoryServiceStubSettings.java
index a2e672aa140a..7c6985f8855e 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/TaxonomyCategoryServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/TaxonomyCategoryServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TaxonomyCategoryServiceStubSettings
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/TeamServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/TeamServiceStub.java
index 4587060063b9..e6a57c1e6d87 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/TeamServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/TeamServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TeamServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/TeamServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/TeamServiceStubSettings.java
index 867df3385043..c123ffb6fd93 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/TeamServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/TeamServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TeamServiceStubSettings extends StubSettings<TeamServiceStubSettings> {
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/UserServiceStub.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/UserServiceStub.java
index 5d7df01f0211..107d180c6c83 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/UserServiceStub.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/UserServiceStub.java
@@ -21,6 +21,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class UserServiceStub implements BackgroundResource {
 
diff --git a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/UserServiceStubSettings.java b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/UserServiceStubSettings.java
index 7d26baf96cdf..eb69d38ce15a 100644
--- a/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/UserServiceStubSettings.java
+++ b/java-admanager/ad-manager/src/main/java/com/google/ads/admanager/v1/stub/UserServiceStubSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class UserServiceStubSettings extends StubSettings<UserServiceStubSettings> {
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/AdBreakName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/AdBreakName.java
index 247a8c313422..473affd07e3b 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/AdBreakName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/AdBreakName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdBreakName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_ASSET_KEY_AD_BREAK =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/AdUnitName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/AdUnitName.java
index f8018bd2018e..10f7f02a54b7 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/AdUnitName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/AdUnitName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdUnitName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_AD_UNIT =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ApplicationName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ApplicationName.java
index abfbb89e01bd..b003630ba007 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ApplicationName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ApplicationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApplicationName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_APPLICATION =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/AudienceSegmentName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/AudienceSegmentName.java
index f4806bde5221..af764d35d48c 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/AudienceSegmentName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/AudienceSegmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AudienceSegmentName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_AUDIENCE_SEGMENT =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/BandwidthGroupName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/BandwidthGroupName.java
index 7a6794d886c4..44df360b5e75 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/BandwidthGroupName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/BandwidthGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BandwidthGroupName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_BANDWIDTH_GROUP =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/BrowserLanguageName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/BrowserLanguageName.java
index 09c53181f9ee..d9d58a838b64 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/BrowserLanguageName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/BrowserLanguageName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BrowserLanguageName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_BROWSER_LANGUAGE =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/BrowserName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/BrowserName.java
index f0b62cb5cb44..ed2a9aab60c2 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/BrowserName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/BrowserName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BrowserName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_BROWSER =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CmsMetadataKeyName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CmsMetadataKeyName.java
index f22da56e6fa2..197e20b3a7e4 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CmsMetadataKeyName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CmsMetadataKeyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CmsMetadataKeyName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_CMS_METADATA_KEY =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CmsMetadataValueName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CmsMetadataValueName.java
index 383bd316ffb2..118595a7fa6c 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CmsMetadataValueName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CmsMetadataValueName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CmsMetadataValueName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_CMS_METADATA_VALUE =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CompanyName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CompanyName.java
index bc4d6522c95f..b3c866aad613 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CompanyName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CompanyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompanyName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_COMPANY =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ContactName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ContactName.java
index b66d30e9a653..a9fdf4e405ac 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ContactName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ContactName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContactName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_CONTACT =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ContentBundleName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ContentBundleName.java
index 660518720eb2..89238aaef63d 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ContentBundleName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ContentBundleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContentBundleName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_CONTENT_BUNDLE =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ContentLabelName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ContentLabelName.java
index 9cc0ee43db09..172931bea6dc 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ContentLabelName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ContentLabelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContentLabelName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_CONTENT_LABEL =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ContentName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ContentName.java
index d2eb18e4c734..bcfb6d8d81c3 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ContentName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ContentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContentName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_CONTENT =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CreativeTemplateName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CreativeTemplateName.java
index e9ba4bcc9fd7..d64b125f4fb8 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CreativeTemplateName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CreativeTemplateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CreativeTemplateName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_CREATIVE_TEMPLATE =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CustomFieldName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CustomFieldName.java
index d5687a672229..bf829417c923 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CustomFieldName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CustomFieldName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomFieldName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_CUSTOM_FIELD =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CustomTargetingKeyName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CustomTargetingKeyName.java
index c65fffaf68e0..3097e0bb0479 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CustomTargetingKeyName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CustomTargetingKeyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomTargetingKeyName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_CUSTOM_TARGETING_KEY =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CustomTargetingValueName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CustomTargetingValueName.java
index 9e79f8e072f7..ae6d2024fe64 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CustomTargetingValueName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/CustomTargetingValueName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomTargetingValueName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_CUSTOM_TARGETING_VALUE =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/DeviceCapabilityName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/DeviceCapabilityName.java
index dbee14d0378b..94463f84abc0 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/DeviceCapabilityName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/DeviceCapabilityName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeviceCapabilityName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_DEVICE_CAPABILITY =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/DeviceCategoryName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/DeviceCategoryName.java
index f06b83014054..1fb392a4d792 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/DeviceCategoryName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/DeviceCategoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeviceCategoryName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_DEVICE_CATEGORY =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/DeviceManufacturerName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/DeviceManufacturerName.java
index 08ab908a73aa..335423513eba 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/DeviceManufacturerName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/DeviceManufacturerName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeviceManufacturerName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_DEVICE_MANUFACTURER =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/EntitySignalsMappingName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/EntitySignalsMappingName.java
index a05ca1bea15f..836ade892c9c 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/EntitySignalsMappingName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/EntitySignalsMappingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntitySignalsMappingName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_ENTITY_SIGNALS_MAPPING =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/GeoTargetName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/GeoTargetName.java
index 24087f97f10f..60a4f17900a2 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/GeoTargetName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/GeoTargetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GeoTargetName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_GEO_TARGET =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/LabelName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/LabelName.java
index 26f13b65a779..9b54bd123faa 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/LabelName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/LabelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LabelName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_LABEL =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/LineItemName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/LineItemName.java
index 7bf792f807dc..3798c60f54cf 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/LineItemName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/LineItemName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LineItemName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_LINE_ITEM =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/LinkedDeviceName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/LinkedDeviceName.java
index 2ce9e2269b38..1a74d7bc0d0b 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/LinkedDeviceName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/LinkedDeviceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LinkedDeviceName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_LINKED_DEVICE =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/LiveStreamEventName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/LiveStreamEventName.java
index db0369033918..f837b896b115 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/LiveStreamEventName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/LiveStreamEventName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LiveStreamEventName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_LIVE_STREAM_EVENT =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/MobileCarrierName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/MobileCarrierName.java
index 326a13b2e559..b66560d34324 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/MobileCarrierName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/MobileCarrierName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MobileCarrierName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_MOBILE_CARRIER =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/MobileDeviceName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/MobileDeviceName.java
index e4464987b9c9..86450ff475d2 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/MobileDeviceName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/MobileDeviceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MobileDeviceName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_MOBILE_DEVICE =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/MobileDeviceSubmodelName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/MobileDeviceSubmodelName.java
index 363307c88ff3..351e161ba82b 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/MobileDeviceSubmodelName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/MobileDeviceSubmodelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MobileDeviceSubmodelName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_MOBILE_DEVICE_SUBMODEL =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/NetworkName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/NetworkName.java
index f8d6f04da4ba..f7a13137c61e 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/NetworkName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/NetworkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkName implements ResourceName {
   private static final PathTemplate NETWORK_CODE =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/OperatingSystemName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/OperatingSystemName.java
index 5249014a3117..a8e985cf628d 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/OperatingSystemName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/OperatingSystemName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OperatingSystemName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_OPERATING_SYSTEM =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/OperatingSystemVersionName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/OperatingSystemVersionName.java
index f0efb768082b..aa9af776a2a7 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/OperatingSystemVersionName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/OperatingSystemVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OperatingSystemVersionName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_OPERATING_SYSTEM_VERSION =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/OrderName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/OrderName.java
index 190ea810b327..74907dde47f3 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/OrderName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/OrderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrderName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_ORDER =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/PlacementName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/PlacementName.java
index 2379b3eb9aa5..b1a716b1fab6 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/PlacementName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/PlacementName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PlacementName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_PLACEMENT =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/PrivateAuctionDealName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/PrivateAuctionDealName.java
index 268a6ddcffba..b52ef4ed45b6 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/PrivateAuctionDealName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/PrivateAuctionDealName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PrivateAuctionDealName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_PRIVATE_AUCTION_DEAL =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/PrivateAuctionName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/PrivateAuctionName.java
index aeb5ef2ec99a..441d871b0521 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/PrivateAuctionName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/PrivateAuctionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PrivateAuctionName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_PRIVATE_AUCTION =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ProgrammaticBuyerName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ProgrammaticBuyerName.java
index b8f746b3dc63..9d3b9d5f05da 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ProgrammaticBuyerName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ProgrammaticBuyerName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProgrammaticBuyerName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_PROGRAMMATIC_BUYER =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ReportName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ReportName.java
index 14612a6e7064..fbdfdaaa66e1 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ReportName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/ReportName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReportName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_REPORT =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/RichMediaAdsCompanyName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/RichMediaAdsCompanyName.java
index 0ac541feed83..520072d954af 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/RichMediaAdsCompanyName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/RichMediaAdsCompanyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RichMediaAdsCompanyName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_RICH_MEDIA_ADS_COMPANY =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/RoleName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/RoleName.java
index d3548e53ea53..2c1a9c6e8074 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/RoleName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/RoleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RoleName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_ROLE =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/SiteName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/SiteName.java
index 8d8cdaff343e..87595c6bbabe 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/SiteName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/SiteName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SiteName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_SITE =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/TaxonomyCategoryName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/TaxonomyCategoryName.java
index d70d07cf455d..43a6f7a81728 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/TaxonomyCategoryName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/TaxonomyCategoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TaxonomyCategoryName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_TAXONOMY_CATEGORY =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/TeamName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/TeamName.java
index f4957ea2fbd5..835e26eeee6d 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/TeamName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/TeamName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TeamName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_TEAM =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/UserName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/UserName.java
index 29e1d25b4727..6f9ab78fc507 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/UserName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/UserName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_USER =
diff --git a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/WebPropertyName.java b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/WebPropertyName.java
index b26f5d70d479..aa269b87f2a9 100644
--- a/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/WebPropertyName.java
+++ b/java-admanager/proto-ad-manager-v1/src/main/java/com/google/ads/admanager/v1/WebPropertyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WebPropertyName implements ResourceName {
   private static final PathTemplate NETWORK_CODE_WEB_PROPERTY =
diff --git a/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/AdvisoryNotificationsServiceClient.java b/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/AdvisoryNotificationsServiceClient.java
index 3da358e766ae..efab802bd6e6 100644
--- a/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/AdvisoryNotificationsServiceClient.java
+++ b/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/AdvisoryNotificationsServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -199,6 +200,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdvisoryNotificationsServiceClient implements BackgroundResource {
   private final AdvisoryNotificationsServiceSettings settings;
diff --git a/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/AdvisoryNotificationsServiceSettings.java b/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/AdvisoryNotificationsServiceSettings.java
index fd1578d4ea24..90f968578bfd 100644
--- a/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/AdvisoryNotificationsServiceSettings.java
+++ b/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/AdvisoryNotificationsServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdvisoryNotificationsServiceSettings
     extends ClientSettings<AdvisoryNotificationsServiceSettings> {
diff --git a/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/AdvisoryNotificationsServiceStub.java b/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/AdvisoryNotificationsServiceStub.java
index 24e00c164620..46a0bcbc61c2 100644
--- a/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/AdvisoryNotificationsServiceStub.java
+++ b/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/AdvisoryNotificationsServiceStub.java
@@ -28,6 +28,7 @@
 import com.google.cloud.advisorynotifications.v1.Settings;
 import com.google.cloud.advisorynotifications.v1.UpdateSettingsRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AdvisoryNotificationsServiceStub implements BackgroundResource {
 
diff --git a/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/AdvisoryNotificationsServiceStubSettings.java b/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/AdvisoryNotificationsServiceStubSettings.java
index be9ae76f944d..e9b62727d856 100644
--- a/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/AdvisoryNotificationsServiceStubSettings.java
+++ b/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/AdvisoryNotificationsServiceStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AdvisoryNotificationsServiceStubSettings
diff --git a/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/GrpcAdvisoryNotificationsServiceCallableFactory.java b/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/GrpcAdvisoryNotificationsServiceCallableFactory.java
index 97c572d794eb..34a2266e8bfe 100644
--- a/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/GrpcAdvisoryNotificationsServiceCallableFactory.java
+++ b/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/GrpcAdvisoryNotificationsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAdvisoryNotificationsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/GrpcAdvisoryNotificationsServiceStub.java b/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/GrpcAdvisoryNotificationsServiceStub.java
index 6a45e3dec93c..6746a37afce2 100644
--- a/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/GrpcAdvisoryNotificationsServiceStub.java
+++ b/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/GrpcAdvisoryNotificationsServiceStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAdvisoryNotificationsServiceStub extends AdvisoryNotificationsServiceStub {
   private static final MethodDescriptor<ListNotificationsRequest, ListNotificationsResponse>
diff --git a/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/HttpJsonAdvisoryNotificationsServiceCallableFactory.java b/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/HttpJsonAdvisoryNotificationsServiceCallableFactory.java
index 1b8421b64c9a..c12e141c69e0 100644
--- a/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/HttpJsonAdvisoryNotificationsServiceCallableFactory.java
+++ b/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/HttpJsonAdvisoryNotificationsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAdvisoryNotificationsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/HttpJsonAdvisoryNotificationsServiceStub.java b/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/HttpJsonAdvisoryNotificationsServiceStub.java
index b4d0c0bc4afe..b4c287ad057f 100644
--- a/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/HttpJsonAdvisoryNotificationsServiceStub.java
+++ b/java-advisorynotifications/google-cloud-advisorynotifications/src/main/java/com/google/cloud/advisorynotifications/v1/stub/HttpJsonAdvisoryNotificationsServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAdvisoryNotificationsServiceStub extends AdvisoryNotificationsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-advisorynotifications/proto-google-cloud-advisorynotifications-v1/src/main/java/com/google/cloud/advisorynotifications/v1/LocationName.java b/java-advisorynotifications/proto-google-cloud-advisorynotifications-v1/src/main/java/com/google/cloud/advisorynotifications/v1/LocationName.java
index 32ce71135c56..c21cc7ecd9a0 100644
--- a/java-advisorynotifications/proto-google-cloud-advisorynotifications-v1/src/main/java/com/google/cloud/advisorynotifications/v1/LocationName.java
+++ b/java-advisorynotifications/proto-google-cloud-advisorynotifications-v1/src/main/java/com/google/cloud/advisorynotifications/v1/LocationName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-advisorynotifications/proto-google-cloud-advisorynotifications-v1/src/main/java/com/google/cloud/advisorynotifications/v1/NotificationName.java b/java-advisorynotifications/proto-google-cloud-advisorynotifications-v1/src/main/java/com/google/cloud/advisorynotifications/v1/NotificationName.java
index 5ed18397c59e..cd21bbb449a5 100644
--- a/java-advisorynotifications/proto-google-cloud-advisorynotifications-v1/src/main/java/com/google/cloud/advisorynotifications/v1/NotificationName.java
+++ b/java-advisorynotifications/proto-google-cloud-advisorynotifications-v1/src/main/java/com/google/cloud/advisorynotifications/v1/NotificationName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotificationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_NOTIFICATION =
diff --git a/java-advisorynotifications/proto-google-cloud-advisorynotifications-v1/src/main/java/com/google/cloud/advisorynotifications/v1/SettingsName.java b/java-advisorynotifications/proto-google-cloud-advisorynotifications-v1/src/main/java/com/google/cloud/advisorynotifications/v1/SettingsName.java
index 0d4bb80e7222..27e4a44a3527 100644
--- a/java-advisorynotifications/proto-google-cloud-advisorynotifications-v1/src/main/java/com/google/cloud/advisorynotifications/v1/SettingsName.java
+++ b/java-advisorynotifications/proto-google-cloud-advisorynotifications-v1/src/main/java/com/google/cloud/advisorynotifications/v1/SettingsName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SettingsName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/AgentRegistryClient.java b/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/AgentRegistryClient.java
index daa0139ea6b8..98825baa3de0 100644
--- a/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/AgentRegistryClient.java
+++ b/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/AgentRegistryClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -531,6 +532,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentRegistryClient implements BackgroundResource {
   private final AgentRegistrySettings settings;
diff --git a/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/AgentRegistrySettings.java b/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/AgentRegistrySettings.java
index e9eb5a028d3c..18e970fcfd07 100644
--- a/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/AgentRegistrySettings.java
+++ b/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/AgentRegistrySettings.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentRegistrySettings extends ClientSettings<AgentRegistrySettings> {
 
diff --git a/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/AgentRegistryStub.java b/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/AgentRegistryStub.java
index c2523ee90dfa..d25639c7fd6f 100644
--- a/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/AgentRegistryStub.java
+++ b/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/AgentRegistryStub.java
@@ -70,6 +70,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AgentRegistryStub implements BackgroundResource {
 
diff --git a/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/AgentRegistryStubSettings.java b/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/AgentRegistryStubSettings.java
index 0584f40b5516..4333553d4cb1 100644
--- a/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/AgentRegistryStubSettings.java
+++ b/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/AgentRegistryStubSettings.java
@@ -104,6 +104,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -181,6 +182,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AgentRegistryStubSettings extends StubSettings<AgentRegistryStubSettings> {
diff --git a/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/GrpcAgentRegistryCallableFactory.java b/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/GrpcAgentRegistryCallableFactory.java
index a682ec0da295..2f35200f0a93 100644
--- a/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/GrpcAgentRegistryCallableFactory.java
+++ b/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/GrpcAgentRegistryCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAgentRegistryCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/GrpcAgentRegistryStub.java b/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/GrpcAgentRegistryStub.java
index 2759de2c93a5..3de96dc1b9b5 100644
--- a/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/GrpcAgentRegistryStub.java
+++ b/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/GrpcAgentRegistryStub.java
@@ -79,6 +79,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAgentRegistryStub extends AgentRegistryStub {
   private static final MethodDescriptor<ListAgentsRequest, ListAgentsResponse>
diff --git a/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/HttpJsonAgentRegistryCallableFactory.java b/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/HttpJsonAgentRegistryCallableFactory.java
index 2f41b6daa6cd..6b49268f5440 100644
--- a/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/HttpJsonAgentRegistryCallableFactory.java
+++ b/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/HttpJsonAgentRegistryCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAgentRegistryCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/HttpJsonAgentRegistryStub.java b/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/HttpJsonAgentRegistryStub.java
index fb544297bf6f..7cbf79bff575 100644
--- a/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/HttpJsonAgentRegistryStub.java
+++ b/java-agentregistry/google-cloud-agentregistry/src/main/java/com/google/cloud/agentregistry/v1/stub/HttpJsonAgentRegistryStub.java
@@ -90,6 +90,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAgentRegistryStub extends AgentRegistryStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/AgentName.java b/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/AgentName.java
index f3cafcb3418a..c94cf3b34244 100644
--- a/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/AgentName.java
+++ b/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/AgentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT =
diff --git a/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/BindingName.java b/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/BindingName.java
index 1f30c38db2c5..f10e2e12b753 100644
--- a/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/BindingName.java
+++ b/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/BindingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BindingName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BINDING =
diff --git a/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/EndpointName.java b/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/EndpointName.java
index 25c8907fdf6a..23c8803c21c0 100644
--- a/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/EndpointName.java
+++ b/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/EndpointName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EndpointName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENDPOINT =
diff --git a/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/LocationName.java b/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/LocationName.java
index e57dd2193634..02de5568488b 100644
--- a/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/LocationName.java
+++ b/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/McpServerName.java b/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/McpServerName.java
index c87bcc17a927..f4d96ae98f45 100644
--- a/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/McpServerName.java
+++ b/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/McpServerName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class McpServerName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MCP_SERVER =
diff --git a/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/ServiceName.java b/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/ServiceName.java
index cf3232a7535f..ccae83a782ea 100644
--- a/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/ServiceName.java
+++ b/java-agentregistry/proto-google-cloud-agentregistry-v1/src/main/java/com/google/cloud/agentregistry/v1/ServiceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE =
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DataFoundryServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DataFoundryServiceClient.java
index bc4d21b4777b..aab26423873a 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DataFoundryServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DataFoundryServiceClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -208,6 +209,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataFoundryServiceClient implements BackgroundResource {
   private final DataFoundryServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DataFoundryServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DataFoundryServiceSettings.java
index fdb621d582e3..91ff105157e3 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DataFoundryServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DataFoundryServiceSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -93,6 +94,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataFoundryServiceSettings extends ClientSettings<DataFoundryServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DatasetServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DatasetServiceClient.java
index 435169b38da2..cccb02aa6d20 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DatasetServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DatasetServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -558,6 +559,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatasetServiceClient implements BackgroundResource {
   private final DatasetServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DatasetServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DatasetServiceSettings.java
index 5789f8dc42b6..496981a6eece 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DatasetServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DatasetServiceSettings.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatasetServiceSettings extends ClientSettings<DatasetServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DeploymentResourcePoolServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DeploymentResourcePoolServiceClient.java
index 67b8cc64ba33..100f386d708e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DeploymentResourcePoolServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DeploymentResourcePoolServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -313,6 +314,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentResourcePoolServiceClient implements BackgroundResource {
   private final DeploymentResourcePoolServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DeploymentResourcePoolServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DeploymentResourcePoolServiceSettings.java
index 340ed56b788e..7667ce6ccf41 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DeploymentResourcePoolServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/DeploymentResourcePoolServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentResourcePoolServiceSettings
     extends ClientSettings<DeploymentResourcePoolServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/EndpointServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/EndpointServiceClient.java
index 8153b1600e30..035a5388ff3b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/EndpointServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/EndpointServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -373,6 +374,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EndpointServiceClient implements BackgroundResource {
   private final EndpointServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/EndpointServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/EndpointServiceSettings.java
index 352f94f9df84..f69532f10384 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/EndpointServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/EndpointServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EndpointServiceSettings extends ClientSettings<EndpointServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/EvaluationServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/EvaluationServiceClient.java
index 46d31ec433e0..3920deb3606c 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/EvaluationServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/EvaluationServiceClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -204,6 +205,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EvaluationServiceClient implements BackgroundResource {
   private final EvaluationServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/EvaluationServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/EvaluationServiceSettings.java
index a88b3471b901..1af21f8dd726 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/EvaluationServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/EvaluationServiceSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EvaluationServiceSettings extends ClientSettings<EvaluationServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreAdminServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreAdminServiceClient.java
index 5a70d1c1f206..824638ff5a75 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreAdminServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreAdminServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -450,6 +451,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureOnlineStoreAdminServiceClient implements BackgroundResource {
   private final FeatureOnlineStoreAdminServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreAdminServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreAdminServiceSettings.java
index 18d7caa814ed..b9c04f5de114 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreAdminServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreAdminServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureOnlineStoreAdminServiceSettings
     extends ClientSettings<FeatureOnlineStoreAdminServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreServiceClient.java
index 303e8f40be47..320e249a8a05 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreServiceClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -249,6 +250,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureOnlineStoreServiceClient implements BackgroundResource {
   private final FeatureOnlineStoreServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreServiceSettings.java
index e2ac845002eb..6df8d0879d2d 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreServiceSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -94,6 +95,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureOnlineStoreServiceSettings
     extends ClientSettings<FeatureOnlineStoreServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureRegistryServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureRegistryServiceClient.java
index 31567966dae3..921c679661a7 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureRegistryServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureRegistryServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -410,6 +411,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureRegistryServiceClient implements BackgroundResource {
   private final FeatureRegistryServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureRegistryServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureRegistryServiceSettings.java
index d1136c326315..decb2faa806d 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureRegistryServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeatureRegistryServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureRegistryServiceSettings extends ClientSettings<FeatureRegistryServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreOnlineServingServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreOnlineServingServiceClient.java
index e1f191e2c515..145f1c1312e9 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreOnlineServingServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreOnlineServingServiceClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -240,6 +241,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeaturestoreOnlineServingServiceClient implements BackgroundResource {
   private final FeaturestoreOnlineServingServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreOnlineServingServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreOnlineServingServiceSettings.java
index 2f9b0754c6d3..3635f196820e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreOnlineServingServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreOnlineServingServiceSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -95,6 +96,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeaturestoreOnlineServingServiceSettings
     extends ClientSettings<FeaturestoreOnlineServingServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreServiceClient.java
index a778d3dc7962..a7856b0c2029 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -625,6 +626,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeaturestoreServiceClient implements BackgroundResource {
   private final FeaturestoreServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreServiceSettings.java
index 40a2336fd641..b4101b6df3b2 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreServiceSettings.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeaturestoreServiceSettings extends ClientSettings<FeaturestoreServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/GenAiCacheServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/GenAiCacheServiceClient.java
index 6fb3900b364c..4106348e052b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/GenAiCacheServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/GenAiCacheServiceClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -285,6 +286,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GenAiCacheServiceClient implements BackgroundResource {
   private final GenAiCacheServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/GenAiCacheServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/GenAiCacheServiceSettings.java
index 67dce2699629..e85e2213987e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/GenAiCacheServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/GenAiCacheServiceSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -94,6 +95,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GenAiCacheServiceSettings extends ClientSettings<GenAiCacheServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/GenAiTuningServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/GenAiTuningServiceClient.java
index 7367a2d845ea..f7dda7b6c83f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/GenAiTuningServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/GenAiTuningServiceClient.java
@@ -45,6 +45,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -290,6 +291,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GenAiTuningServiceClient implements BackgroundResource {
   private final GenAiTuningServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/GenAiTuningServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/GenAiTuningServiceSettings.java
index 388fdf3a87de..c36ca3e05197 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/GenAiTuningServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/GenAiTuningServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GenAiTuningServiceSettings extends ClientSettings<GenAiTuningServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/IndexEndpointServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/IndexEndpointServiceClient.java
index e2b05c170afc..4b2e7246b871 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/IndexEndpointServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/IndexEndpointServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -351,6 +352,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IndexEndpointServiceClient implements BackgroundResource {
   private final IndexEndpointServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/IndexEndpointServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/IndexEndpointServiceSettings.java
index 1c858a069fd2..5fbaa34eb4b6 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/IndexEndpointServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/IndexEndpointServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IndexEndpointServiceSettings extends ClientSettings<IndexEndpointServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/IndexServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/IndexServiceClient.java
index 0243de8cabe1..2037e889e402 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/IndexServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/IndexServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -316,6 +317,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IndexServiceClient implements BackgroundResource {
   private final IndexServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/IndexServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/IndexServiceSettings.java
index 33fc35790451..deb018da3541 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/IndexServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/IndexServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IndexServiceSettings extends ClientSettings<IndexServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/JobServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/JobServiceClient.java
index 4dde02a9cfda..2aead9cad666 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/JobServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/JobServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -871,6 +872,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobServiceClient implements BackgroundResource {
   private final JobServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/JobServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/JobServiceSettings.java
index ff2fb8e9a7d6..147aad1a740c 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/JobServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/JobServiceSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobServiceSettings extends ClientSettings<JobServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/LlmUtilityServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/LlmUtilityServiceClient.java
index 4cb5e96460da..958c3eceb4ca 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/LlmUtilityServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/LlmUtilityServiceClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -228,6 +229,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LlmUtilityServiceClient implements BackgroundResource {
   private final LlmUtilityServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/LlmUtilityServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/LlmUtilityServiceSettings.java
index 00251d0b54e9..505663ce477e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/LlmUtilityServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/LlmUtilityServiceSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LlmUtilityServiceSettings extends ClientSettings<LlmUtilityServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MatchServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MatchServiceClient.java
index f6f727277689..3baafd9cda83 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MatchServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MatchServiceClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -220,6 +221,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MatchServiceClient implements BackgroundResource {
   private final MatchServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MatchServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MatchServiceSettings.java
index 68c4537591d8..ed3b91f585e9 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MatchServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MatchServiceSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MatchServiceSettings extends ClientSettings<MatchServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MetadataServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MetadataServiceClient.java
index 819b4884f2e4..b45ff36e8f03 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MetadataServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MetadataServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -811,6 +812,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetadataServiceClient implements BackgroundResource {
   private final MetadataServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MetadataServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MetadataServiceSettings.java
index 38211cf8ac6c..954d1c2a83e6 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MetadataServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MetadataServiceSettings.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetadataServiceSettings extends ClientSettings<MetadataServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MigrationServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MigrationServiceClient.java
index 8994b60f5d2f..2016d81ea191 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MigrationServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MigrationServiceClient.java
@@ -44,6 +44,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -232,6 +233,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MigrationServiceClient implements BackgroundResource {
   private final MigrationServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MigrationServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MigrationServiceSettings.java
index 0c440b05e857..e21ae7bcd1c6 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MigrationServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/MigrationServiceSettings.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MigrationServiceSettings extends ClientSettings<MigrationServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelGardenServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelGardenServiceClient.java
index 06f1618e9ae1..936e6219458e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelGardenServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelGardenServiceClient.java
@@ -44,6 +44,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -225,6 +226,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelGardenServiceClient implements BackgroundResource {
   private final ModelGardenServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelGardenServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelGardenServiceSettings.java
index fb4fc27558e6..20141365b165 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelGardenServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelGardenServiceSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelGardenServiceSettings extends ClientSettings<ModelGardenServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelServiceClient.java
index fe590b501029..3eaebd9cb87e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -565,6 +566,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelServiceClient implements BackgroundResource {
   private final ModelServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelServiceSettings.java
index 33d7b0b9e0fa..4bce51f39f76 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelServiceSettings.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelServiceSettings extends ClientSettings<ModelServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/NotebookServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/NotebookServiceClient.java
index 1deeecffba04..f9e225f1267d 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/NotebookServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/NotebookServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -511,6 +512,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotebookServiceClient implements BackgroundResource {
   private final NotebookServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/NotebookServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/NotebookServiceSettings.java
index 514194554445..c694d80dd924 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/NotebookServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/NotebookServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotebookServiceSettings extends ClientSettings<NotebookServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PersistentResourceServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PersistentResourceServiceClient.java
index c2b66f6b0e57..135442e3e3ee 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PersistentResourceServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PersistentResourceServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -313,6 +314,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PersistentResourceServiceClient implements BackgroundResource {
   private final PersistentResourceServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PersistentResourceServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PersistentResourceServiceSettings.java
index 054d07d5245f..603ca18e58ce 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PersistentResourceServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PersistentResourceServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PersistentResourceServiceSettings
     extends ClientSettings<PersistentResourceServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PipelineServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PipelineServiceClient.java
index f8f993004fd7..97b8a20e795b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PipelineServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PipelineServiceClient.java
@@ -45,6 +45,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -430,6 +431,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PipelineServiceClient implements BackgroundResource {
   private final PipelineServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PipelineServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PipelineServiceSettings.java
index 9875440ff61e..a3021a0dc3f1 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PipelineServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PipelineServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PipelineServiceSettings extends ClientSettings<PipelineServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PredictionServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PredictionServiceClient.java
index d3ea47bcc93f..1b5023bcd178 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PredictionServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PredictionServiceClient.java
@@ -44,6 +44,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -394,6 +395,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PredictionServiceClient implements BackgroundResource {
   private final PredictionServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PredictionServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PredictionServiceSettings.java
index ce8eaaf7ec03..346879fc4365 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PredictionServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/PredictionServiceSettings.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -95,6 +96,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PredictionServiceSettings extends ClientSettings<PredictionServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineExecutionServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineExecutionServiceClient.java
index 5322fa8ca6aa..4e80ec60ff71 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineExecutionServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineExecutionServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -255,6 +256,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReasoningEngineExecutionServiceClient implements BackgroundResource {
   private final ReasoningEngineExecutionServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineExecutionServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineExecutionServiceSettings.java
index fc46220d930e..7e9f80dee802 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineExecutionServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineExecutionServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReasoningEngineExecutionServiceSettings
     extends ClientSettings<ReasoningEngineExecutionServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineServiceClient.java
index f4bede2cfee5..6f8e1d682c2a 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -293,6 +294,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReasoningEngineServiceClient implements BackgroundResource {
   private final ReasoningEngineServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineServiceSettings.java
index ca93c8cdbdb1..84f5689d747f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReasoningEngineServiceSettings extends ClientSettings<ReasoningEngineServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ScheduleServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ScheduleServiceClient.java
index e4ef0f4a61e6..c4b6abb5d77d 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ScheduleServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ScheduleServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -333,6 +334,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ScheduleServiceClient implements BackgroundResource {
   private final ScheduleServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ScheduleServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ScheduleServiceSettings.java
index 343e7034d9c2..91b3bbb19382 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ScheduleServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ScheduleServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ScheduleServiceSettings extends ClientSettings<ScheduleServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/SessionServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/SessionServiceClient.java
index 8cc247f818f1..59c2eda38e94 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/SessionServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/SessionServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -329,6 +330,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionServiceClient implements BackgroundResource {
   private final SessionServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/SessionServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/SessionServiceSettings.java
index 425f90fa7687..d56192680f4b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/SessionServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/SessionServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionServiceSettings extends ClientSettings<SessionServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/SpecialistPoolServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/SpecialistPoolServiceClient.java
index ef3c3575cb68..7c19923f9a2e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/SpecialistPoolServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/SpecialistPoolServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -297,6 +298,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpecialistPoolServiceClient implements BackgroundResource {
   private final SpecialistPoolServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/SpecialistPoolServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/SpecialistPoolServiceSettings.java
index c5f0fef719f5..d37b3632ccd2 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/SpecialistPoolServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/SpecialistPoolServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpecialistPoolServiceSettings extends ClientSettings<SpecialistPoolServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/TensorboardServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/TensorboardServiceClient.java
index f76b417aa004..8f8ea23a2aab 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/TensorboardServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/TensorboardServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -756,6 +757,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TensorboardServiceClient implements BackgroundResource {
   private final TensorboardServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/TensorboardServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/TensorboardServiceSettings.java
index 690275faf3b1..e5d510ebeca9 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/TensorboardServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/TensorboardServiceSettings.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -128,6 +129,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TensorboardServiceSettings extends ClientSettings<TensorboardServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VertexRagDataServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VertexRagDataServiceClient.java
index b29baca8dea7..ab00c257941b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VertexRagDataServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VertexRagDataServiceClient.java
@@ -45,6 +45,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -427,6 +428,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VertexRagDataServiceClient implements BackgroundResource {
   private final VertexRagDataServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VertexRagDataServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VertexRagDataServiceSettings.java
index d5d642fd7cf3..d50f4092b768 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VertexRagDataServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VertexRagDataServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VertexRagDataServiceSettings extends ClientSettings<VertexRagDataServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VertexRagServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VertexRagServiceClient.java
index 8b2c726dedac..d3b7d7d48a6e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VertexRagServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VertexRagServiceClient.java
@@ -44,6 +44,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -288,6 +289,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VertexRagServiceClient implements BackgroundResource {
   private final VertexRagServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VertexRagServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VertexRagServiceSettings.java
index 98fd2792fb58..53fb56dcf554 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VertexRagServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VertexRagServiceSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VertexRagServiceSettings extends ClientSettings<VertexRagServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VizierServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VizierServiceClient.java
index ab12abfa2852..0233dfb304a8 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VizierServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VizierServiceClient.java
@@ -45,6 +45,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -457,6 +458,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VizierServiceClient implements BackgroundResource {
   private final VizierServiceSettings settings;
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VizierServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VizierServiceSettings.java
index 8f3dc91b5ed7..c5b8c045e80c 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VizierServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/VizierServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VizierServiceSettings extends ClientSettings<VizierServiceSettings> {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DataFoundryServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DataFoundryServiceStub.java
index ea83af0a193c..74ea0712f1e6 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DataFoundryServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DataFoundryServiceStub.java
@@ -32,6 +32,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataFoundryServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DataFoundryServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DataFoundryServiceStubSettings.java
index 4a7698861be7..7aebb785cc8a 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DataFoundryServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DataFoundryServiceStubSettings.java
@@ -59,6 +59,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataFoundryServiceStubSettings extends StubSettings<DataFoundryServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DatasetServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DatasetServiceStub.java
index 9b1e864f1b52..b7f17546462c 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DatasetServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DatasetServiceStub.java
@@ -76,6 +76,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DatasetServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DatasetServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DatasetServiceStubSettings.java
index 7f2daeee0de1..803ed44f7a59 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DatasetServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DatasetServiceStubSettings.java
@@ -110,6 +110,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -187,6 +188,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DatasetServiceStubSettings extends StubSettings<DatasetServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DeploymentResourcePoolServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DeploymentResourcePoolServiceStub.java
index ddfcc0f05094..f8830e714e9b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DeploymentResourcePoolServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DeploymentResourcePoolServiceStub.java
@@ -48,6 +48,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DeploymentResourcePoolServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DeploymentResourcePoolServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DeploymentResourcePoolServiceStubSettings.java
index 205fe968e7f9..9f15f27f7a07 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DeploymentResourcePoolServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/DeploymentResourcePoolServiceStubSettings.java
@@ -79,6 +79,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -157,6 +158,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DeploymentResourcePoolServiceStubSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/EndpointServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/EndpointServiceStub.java
index 5b0ebc037258..ce5d5b69969f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/EndpointServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/EndpointServiceStub.java
@@ -55,6 +55,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EndpointServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/EndpointServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/EndpointServiceStubSettings.java
index af374769ed5f..27ebd37cc178 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/EndpointServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/EndpointServiceStubSettings.java
@@ -85,6 +85,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -162,6 +163,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EndpointServiceStubSettings extends StubSettings<EndpointServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/EvaluationServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/EvaluationServiceStub.java
index 5e31a954df5c..508cbec4c6c5 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/EvaluationServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/EvaluationServiceStub.java
@@ -32,6 +32,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EvaluationServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/EvaluationServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/EvaluationServiceStubSettings.java
index 59cf9c2cf789..7e3a65d6a154 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/EvaluationServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/EvaluationServiceStubSettings.java
@@ -59,6 +59,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EvaluationServiceStubSettings extends StubSettings<EvaluationServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureOnlineStoreAdminServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureOnlineStoreAdminServiceStub.java
index 97319407d083..5df57b50927b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureOnlineStoreAdminServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureOnlineStoreAdminServiceStub.java
@@ -62,6 +62,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FeatureOnlineStoreAdminServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureOnlineStoreAdminServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureOnlineStoreAdminServiceStubSettings.java
index 3196f188501c..748331266b80 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureOnlineStoreAdminServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureOnlineStoreAdminServiceStubSettings.java
@@ -92,6 +92,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -172,6 +173,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FeatureOnlineStoreAdminServiceStubSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureOnlineStoreServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureOnlineStoreServiceStub.java
index 83ef1d40f6bb..911d01828b52 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureOnlineStoreServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureOnlineStoreServiceStub.java
@@ -39,6 +39,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FeatureOnlineStoreServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureOnlineStoreServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureOnlineStoreServiceStubSettings.java
index aa663e308b2f..c9caf69e6b41 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureOnlineStoreServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureOnlineStoreServiceStubSettings.java
@@ -66,6 +66,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FeatureOnlineStoreServiceStubSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureRegistryServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureRegistryServiceStub.java
index 91d604c63e47..8fe16c2531e2 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureRegistryServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureRegistryServiceStub.java
@@ -58,6 +58,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FeatureRegistryServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureRegistryServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureRegistryServiceStubSettings.java
index 944a1ea874cd..b3a95d1b4bc8 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureRegistryServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeatureRegistryServiceStubSettings.java
@@ -88,6 +88,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -166,6 +167,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FeatureRegistryServiceStubSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeaturestoreOnlineServingServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeaturestoreOnlineServingServiceStub.java
index f387c1682497..e4c0b596969e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeaturestoreOnlineServingServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeaturestoreOnlineServingServiceStub.java
@@ -36,6 +36,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FeaturestoreOnlineServingServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeaturestoreOnlineServingServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeaturestoreOnlineServingServiceStubSettings.java
index 376195e2685a..f6d58270880c 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeaturestoreOnlineServingServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeaturestoreOnlineServingServiceStubSettings.java
@@ -63,6 +63,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FeaturestoreOnlineServingServiceStubSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeaturestoreServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeaturestoreServiceStub.java
index 1c5343edef6d..6ac2ca08458e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeaturestoreServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeaturestoreServiceStub.java
@@ -81,6 +81,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FeaturestoreServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeaturestoreServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeaturestoreServiceStubSettings.java
index f6797cdc484e..dcc76e4023ae 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeaturestoreServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/FeaturestoreServiceStubSettings.java
@@ -111,6 +111,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -189,6 +190,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FeaturestoreServiceStubSettings extends StubSettings<FeaturestoreServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GenAiCacheServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GenAiCacheServiceStub.java
index a5ae0ebfdda6..313f5d29b2f2 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GenAiCacheServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GenAiCacheServiceStub.java
@@ -39,6 +39,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GenAiCacheServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GenAiCacheServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GenAiCacheServiceStubSettings.java
index 3f6f000e79b8..ede77898e48f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GenAiCacheServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GenAiCacheServiceStubSettings.java
@@ -66,6 +66,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GenAiCacheServiceStubSettings extends StubSettings<GenAiCacheServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GenAiTuningServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GenAiTuningServiceStub.java
index b02cc3de0bfa..9f8f3c172584 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GenAiTuningServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GenAiTuningServiceStub.java
@@ -43,6 +43,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GenAiTuningServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GenAiTuningServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GenAiTuningServiceStubSettings.java
index f3ccece2ab81..a3eefce3e122 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GenAiTuningServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GenAiTuningServiceStubSettings.java
@@ -73,6 +73,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GenAiTuningServiceStubSettings extends StubSettings<GenAiTuningServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDataFoundryServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDataFoundryServiceCallableFactory.java
index 4d96b5c8cd1a..2fa26963ceb9 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDataFoundryServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDataFoundryServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataFoundryServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDataFoundryServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDataFoundryServiceStub.java
index 2fd99d09b562..f218e580a006 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDataFoundryServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDataFoundryServiceStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataFoundryServiceStub extends DataFoundryServiceStub {
   private static final MethodDescriptor<GenerateSyntheticDataRequest, GenerateSyntheticDataResponse>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDatasetServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDatasetServiceCallableFactory.java
index 844613347f32..e985175da09c 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDatasetServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDatasetServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDatasetServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDatasetServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDatasetServiceStub.java
index b49bb548a4c5..241264ee5e56 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDatasetServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDatasetServiceStub.java
@@ -85,6 +85,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDatasetServiceStub extends DatasetServiceStub {
   private static final MethodDescriptor<CreateDatasetRequest, Operation>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDeploymentResourcePoolServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDeploymentResourcePoolServiceCallableFactory.java
index ce3045e05f3a..ef66337a55bb 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDeploymentResourcePoolServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDeploymentResourcePoolServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDeploymentResourcePoolServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDeploymentResourcePoolServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDeploymentResourcePoolServiceStub.java
index f579dc6a3a87..888bd2eb6532 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDeploymentResourcePoolServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcDeploymentResourcePoolServiceStub.java
@@ -57,6 +57,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDeploymentResourcePoolServiceStub extends DeploymentResourcePoolServiceStub {
   private static final MethodDescriptor<CreateDeploymentResourcePoolRequest, Operation>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcEndpointServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcEndpointServiceCallableFactory.java
index 8888de81c6fb..82366a7a0932 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcEndpointServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcEndpointServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEndpointServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcEndpointServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcEndpointServiceStub.java
index 931d3a74bd91..acbf9fce591e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcEndpointServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcEndpointServiceStub.java
@@ -64,6 +64,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEndpointServiceStub extends EndpointServiceStub {
   private static final MethodDescriptor<CreateEndpointRequest, Operation>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcEvaluationServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcEvaluationServiceCallableFactory.java
index 808744d4d4d6..5134b198a053 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcEvaluationServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcEvaluationServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEvaluationServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcEvaluationServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcEvaluationServiceStub.java
index 919301711a37..a76747192481 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcEvaluationServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcEvaluationServiceStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEvaluationServiceStub extends EvaluationServiceStub {
   private static final MethodDescriptor<EvaluateInstancesRequest, EvaluateInstancesResponse>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureOnlineStoreAdminServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureOnlineStoreAdminServiceCallableFactory.java
index cbd7bfb3a623..5d7ac377176c 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureOnlineStoreAdminServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureOnlineStoreAdminServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFeatureOnlineStoreAdminServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureOnlineStoreAdminServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureOnlineStoreAdminServiceStub.java
index a6b8e4a7f1e2..22ac0f154621 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureOnlineStoreAdminServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureOnlineStoreAdminServiceStub.java
@@ -71,6 +71,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -78,6 +79,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFeatureOnlineStoreAdminServiceStub extends FeatureOnlineStoreAdminServiceStub {
   private static final MethodDescriptor<CreateFeatureOnlineStoreRequest, Operation>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureOnlineStoreServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureOnlineStoreServiceCallableFactory.java
index 0867e7fe4f7e..87e666f29396 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureOnlineStoreServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureOnlineStoreServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFeatureOnlineStoreServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureOnlineStoreServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureOnlineStoreServiceStub.java
index 969f7b9c3f37..bb9a30625e1a 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureOnlineStoreServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureOnlineStoreServiceStub.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFeatureOnlineStoreServiceStub extends FeatureOnlineStoreServiceStub {
   private static final MethodDescriptor<FetchFeatureValuesRequest, FetchFeatureValuesResponse>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureRegistryServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureRegistryServiceCallableFactory.java
index 28fdacbd2175..99adc6b56790 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureRegistryServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureRegistryServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFeatureRegistryServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureRegistryServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureRegistryServiceStub.java
index 0e8535dcaf6e..b6244a6491c0 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureRegistryServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeatureRegistryServiceStub.java
@@ -67,6 +67,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFeatureRegistryServiceStub extends FeatureRegistryServiceStub {
   private static final MethodDescriptor<CreateFeatureGroupRequest, Operation>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeaturestoreOnlineServingServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeaturestoreOnlineServingServiceCallableFactory.java
index 8057afd84009..bf78214f3242 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeaturestoreOnlineServingServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeaturestoreOnlineServingServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFeaturestoreOnlineServingServiceCallableFactory
     implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeaturestoreOnlineServingServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeaturestoreOnlineServingServiceStub.java
index e86ca8c76ca7..7a8eb2936665 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeaturestoreOnlineServingServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeaturestoreOnlineServingServiceStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFeaturestoreOnlineServingServiceStub extends FeaturestoreOnlineServingServiceStub {
   private static final MethodDescriptor<ReadFeatureValuesRequest, ReadFeatureValuesResponse>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeaturestoreServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeaturestoreServiceCallableFactory.java
index 73ec043fc793..9b44fff49e50 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeaturestoreServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeaturestoreServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFeaturestoreServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeaturestoreServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeaturestoreServiceStub.java
index d6354ced751c..f056a9985703 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeaturestoreServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcFeaturestoreServiceStub.java
@@ -90,6 +90,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFeaturestoreServiceStub extends FeaturestoreServiceStub {
   private static final MethodDescriptor<CreateFeaturestoreRequest, Operation>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcGenAiCacheServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcGenAiCacheServiceCallableFactory.java
index 857821b77b0a..8de806e4c2b6 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcGenAiCacheServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcGenAiCacheServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGenAiCacheServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcGenAiCacheServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcGenAiCacheServiceStub.java
index 196b111f7bfa..662d9ecb5f59 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcGenAiCacheServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcGenAiCacheServiceStub.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGenAiCacheServiceStub extends GenAiCacheServiceStub {
   private static final MethodDescriptor<CreateCachedContentRequest, CachedContent>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcGenAiTuningServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcGenAiTuningServiceCallableFactory.java
index 17702e0b9079..bfb5cce081f4 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcGenAiTuningServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcGenAiTuningServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGenAiTuningServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcGenAiTuningServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcGenAiTuningServiceStub.java
index 1f8ed241b078..f9b1220f71ee 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcGenAiTuningServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcGenAiTuningServiceStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGenAiTuningServiceStub extends GenAiTuningServiceStub {
   private static final MethodDescriptor<CreateTuningJobRequest, TuningJob>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcIndexEndpointServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcIndexEndpointServiceCallableFactory.java
index c224dd78aa38..20712fb2dfc7 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcIndexEndpointServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcIndexEndpointServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIndexEndpointServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcIndexEndpointServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcIndexEndpointServiceStub.java
index aa6acbd7c74c..26cf03c3978b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcIndexEndpointServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcIndexEndpointServiceStub.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIndexEndpointServiceStub extends IndexEndpointServiceStub {
   private static final MethodDescriptor<CreateIndexEndpointRequest, Operation>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcIndexServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcIndexServiceCallableFactory.java
index 724470b9c148..e7037e737ca6 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcIndexServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcIndexServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIndexServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcIndexServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcIndexServiceStub.java
index e996ad2f8028..eb08f8d05793 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcIndexServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcIndexServiceStub.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIndexServiceStub extends IndexServiceStub {
   private static final MethodDescriptor<CreateIndexRequest, Operation> createIndexMethodDescriptor =
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcJobServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcJobServiceCallableFactory.java
index b734910b29cb..bec2bd5fe094 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcJobServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcJobServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcJobServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcJobServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcJobServiceStub.java
index 990c7e85aae7..7a64b741efc9 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcJobServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcJobServiceStub.java
@@ -103,6 +103,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcJobServiceStub extends JobServiceStub {
   private static final MethodDescriptor<CreateCustomJobRequest, CustomJob>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcLlmUtilityServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcLlmUtilityServiceCallableFactory.java
index b50800206cd5..e35427bfc87f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcLlmUtilityServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcLlmUtilityServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLlmUtilityServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcLlmUtilityServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcLlmUtilityServiceStub.java
index ccd274adc89c..6a9bedb724ef 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcLlmUtilityServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcLlmUtilityServiceStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLlmUtilityServiceStub extends LlmUtilityServiceStub {
   private static final MethodDescriptor<CountTokensRequest, CountTokensResponse>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMatchServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMatchServiceCallableFactory.java
index 2c2b48518c14..98e8e6e90e64 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMatchServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMatchServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMatchServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMatchServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMatchServiceStub.java
index a018296f418b..21f4bbb43ff6 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMatchServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMatchServiceStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMatchServiceStub extends MatchServiceStub {
   private static final MethodDescriptor<FindNeighborsRequest, FindNeighborsResponse>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMetadataServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMetadataServiceCallableFactory.java
index bd03661f062f..a0b5e9794ea2 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMetadataServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMetadataServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMetadataServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMetadataServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMetadataServiceStub.java
index 50bbb67fff57..2161779453ce 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMetadataServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMetadataServiceStub.java
@@ -104,6 +104,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMetadataServiceStub extends MetadataServiceStub {
   private static final MethodDescriptor<CreateMetadataStoreRequest, Operation>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMigrationServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMigrationServiceCallableFactory.java
index 212a9c695521..ea6fcccde572 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMigrationServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMigrationServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMigrationServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMigrationServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMigrationServiceStub.java
index dab0402e21ba..3a2ea94f2747 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMigrationServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcMigrationServiceStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMigrationServiceStub extends MigrationServiceStub {
   private static final MethodDescriptor<
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcModelGardenServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcModelGardenServiceCallableFactory.java
index 06a34b6e33ad..8681ce5b027f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcModelGardenServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcModelGardenServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcModelGardenServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcModelGardenServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcModelGardenServiceStub.java
index 99535d5c8a65..c29465278935 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcModelGardenServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcModelGardenServiceStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcModelGardenServiceStub extends ModelGardenServiceStub {
   private static final MethodDescriptor<GetPublisherModelRequest, PublisherModel>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcModelServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcModelServiceCallableFactory.java
index 9280d3c3eb64..1401afc73dae 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcModelServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcModelServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcModelServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcModelServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcModelServiceStub.java
index 2cfb238936dc..f0b43596bf66 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcModelServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcModelServiceStub.java
@@ -86,6 +86,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -93,6 +94,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcModelServiceStub extends ModelServiceStub {
   private static final MethodDescriptor<UploadModelRequest, Operation> uploadModelMethodDescriptor =
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcNotebookServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcNotebookServiceCallableFactory.java
index 4f2063c693c4..c1b4a823ba43 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcNotebookServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcNotebookServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNotebookServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcNotebookServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcNotebookServiceStub.java
index 378b80ac7fd0..61291d700f7b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcNotebookServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcNotebookServiceStub.java
@@ -78,6 +78,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNotebookServiceStub extends NotebookServiceStub {
   private static final MethodDescriptor<CreateNotebookRuntimeTemplateRequest, Operation>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPersistentResourceServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPersistentResourceServiceCallableFactory.java
index 8a5f121dc37d..c1177d71fc36 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPersistentResourceServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPersistentResourceServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPersistentResourceServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPersistentResourceServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPersistentResourceServiceStub.java
index a4a622f7daf9..0ee3155237e2 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPersistentResourceServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPersistentResourceServiceStub.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPersistentResourceServiceStub extends PersistentResourceServiceStub {
   private static final MethodDescriptor<CreatePersistentResourceRequest, Operation>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPipelineServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPipelineServiceCallableFactory.java
index 819dd38ed513..aca5158b0f9f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPipelineServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPipelineServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPipelineServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPipelineServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPipelineServiceStub.java
index ffe1a2f5c8f4..4bfb15e566a8 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPipelineServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPipelineServiceStub.java
@@ -65,6 +65,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPipelineServiceStub extends PipelineServiceStub {
   private static final MethodDescriptor<CreateTrainingPipelineRequest, TrainingPipeline>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPredictionServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPredictionServiceCallableFactory.java
index 2732f3c60737..c3f4f059fc69 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPredictionServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPredictionServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPredictionServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPredictionServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPredictionServiceStub.java
index f411450efe23..5ad3c78ee796 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPredictionServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcPredictionServiceStub.java
@@ -65,6 +65,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPredictionServiceStub extends PredictionServiceStub {
   private static final MethodDescriptor<PredictRequest, PredictResponse> predictMethodDescriptor =
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcReasoningEngineExecutionServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcReasoningEngineExecutionServiceCallableFactory.java
index 4d637d8b6e3f..73b3a7928564 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcReasoningEngineExecutionServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcReasoningEngineExecutionServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcReasoningEngineExecutionServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcReasoningEngineExecutionServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcReasoningEngineExecutionServiceStub.java
index aaa6eedbd4b8..efead6ccd39e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcReasoningEngineExecutionServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcReasoningEngineExecutionServiceStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcReasoningEngineExecutionServiceStub extends ReasoningEngineExecutionServiceStub {
   private static final MethodDescriptor<QueryReasoningEngineRequest, QueryReasoningEngineResponse>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcReasoningEngineServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcReasoningEngineServiceCallableFactory.java
index 023619ef54c2..1e8492802a11 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcReasoningEngineServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcReasoningEngineServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcReasoningEngineServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcReasoningEngineServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcReasoningEngineServiceStub.java
index b67160eb899e..7adff0e42caf 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcReasoningEngineServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcReasoningEngineServiceStub.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcReasoningEngineServiceStub extends ReasoningEngineServiceStub {
   private static final MethodDescriptor<CreateReasoningEngineRequest, Operation>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcScheduleServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcScheduleServiceCallableFactory.java
index 41754f0476a6..e904cf4f07da 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcScheduleServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcScheduleServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcScheduleServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcScheduleServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcScheduleServiceStub.java
index 5fb009e03900..6a6e8fef25a2 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcScheduleServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcScheduleServiceStub.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcScheduleServiceStub extends ScheduleServiceStub {
   private static final MethodDescriptor<CreateScheduleRequest, Schedule>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcSessionServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcSessionServiceCallableFactory.java
index 7cf27919536a..af7a15160f74 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcSessionServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcSessionServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSessionServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcSessionServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcSessionServiceStub.java
index ff5f4dd1d456..d132ce7202a1 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcSessionServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcSessionServiceStub.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSessionServiceStub extends SessionServiceStub {
   private static final MethodDescriptor<CreateSessionRequest, Operation>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcSpecialistPoolServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcSpecialistPoolServiceCallableFactory.java
index f91d07d8dd28..88b8e5d4cd24 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcSpecialistPoolServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcSpecialistPoolServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSpecialistPoolServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcSpecialistPoolServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcSpecialistPoolServiceStub.java
index 71888172c848..c0607c2cc0e3 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcSpecialistPoolServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcSpecialistPoolServiceStub.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSpecialistPoolServiceStub extends SpecialistPoolServiceStub {
   private static final MethodDescriptor<CreateSpecialistPoolRequest, Operation>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcTensorboardServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcTensorboardServiceCallableFactory.java
index 861668a6abdd..8af45fc2a24f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcTensorboardServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcTensorboardServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTensorboardServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcTensorboardServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcTensorboardServiceStub.java
index 1c1c6c352c80..719c0b3a027c 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcTensorboardServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcTensorboardServiceStub.java
@@ -100,6 +100,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTensorboardServiceStub extends TensorboardServiceStub {
   private static final MethodDescriptor<CreateTensorboardRequest, Operation>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVertexRagDataServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVertexRagDataServiceCallableFactory.java
index 563d5db3b412..7c9163b514e8 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVertexRagDataServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVertexRagDataServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVertexRagDataServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVertexRagDataServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVertexRagDataServiceStub.java
index 8e70086fba2a..a009d375430e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVertexRagDataServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVertexRagDataServiceStub.java
@@ -69,6 +69,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -76,6 +77,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVertexRagDataServiceStub extends VertexRagDataServiceStub {
   private static final MethodDescriptor<CreateRagCorpusRequest, Operation>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVertexRagServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVertexRagServiceCallableFactory.java
index 1658eb36f0d2..eef2a333cdba 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVertexRagServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVertexRagServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVertexRagServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVertexRagServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVertexRagServiceStub.java
index 7aabdbca1016..86b3d97eafd7 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVertexRagServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVertexRagServiceStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVertexRagServiceStub extends VertexRagServiceStub {
   private static final MethodDescriptor<RetrieveContextsRequest, RetrieveContextsResponse>
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVizierServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVizierServiceCallableFactory.java
index f05bab0c44d9..3372c932605b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVizierServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVizierServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVizierServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVizierServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVizierServiceStub.java
index e17c2e7a4325..5cb7de22f8fd 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVizierServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/GrpcVizierServiceStub.java
@@ -69,6 +69,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -76,6 +77,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVizierServiceStub extends VizierServiceStub {
   private static final MethodDescriptor<CreateStudyRequest, Study> createStudyMethodDescriptor =
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/IndexEndpointServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/IndexEndpointServiceStub.java
index e6339afb2492..74cf65871d32 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/IndexEndpointServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/IndexEndpointServiceStub.java
@@ -53,6 +53,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class IndexEndpointServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/IndexEndpointServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/IndexEndpointServiceStubSettings.java
index a5429798fae3..00fd26b6a903 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/IndexEndpointServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/IndexEndpointServiceStubSettings.java
@@ -83,6 +83,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -161,6 +162,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class IndexEndpointServiceStubSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/IndexServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/IndexServiceStub.java
index ffb0b5019ef7..9482f117767c 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/IndexServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/IndexServiceStub.java
@@ -49,6 +49,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class IndexServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/IndexServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/IndexServiceStubSettings.java
index 3eb91e32270e..ac6793e7eb70 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/IndexServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/IndexServiceStubSettings.java
@@ -79,6 +79,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class IndexServiceStubSettings extends StubSettings<IndexServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/JobServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/JobServiceStub.java
index f22daf8c0b3d..ac18e8ad2fbb 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/JobServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/JobServiceStub.java
@@ -94,6 +94,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class JobServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/JobServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/JobServiceStubSettings.java
index 4635b2038ce1..75f89d888772 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/JobServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/JobServiceStubSettings.java
@@ -125,6 +125,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -200,6 +201,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class JobServiceStubSettings extends StubSettings<JobServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/LlmUtilityServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/LlmUtilityServiceStub.java
index 2f4aacfaf9d2..4c4c5e7750c0 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/LlmUtilityServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/LlmUtilityServiceStub.java
@@ -34,6 +34,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LlmUtilityServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/LlmUtilityServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/LlmUtilityServiceStubSettings.java
index 8334e76e598a..d19f4edbd13b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/LlmUtilityServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/LlmUtilityServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LlmUtilityServiceStubSettings extends StubSettings<LlmUtilityServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MatchServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MatchServiceStub.java
index 1c2b0d1ce4b4..d43259901947 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MatchServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MatchServiceStub.java
@@ -34,6 +34,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MatchServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MatchServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MatchServiceStubSettings.java
index c11ca615bf9f..b2e404d6c319 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MatchServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MatchServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MatchServiceStubSettings extends StubSettings<MatchServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MetadataServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MetadataServiceStub.java
index e8a3bd8e6f98..181b916394a2 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MetadataServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MetadataServiceStub.java
@@ -95,6 +95,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MetadataServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MetadataServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MetadataServiceStubSettings.java
index 36170b238be8..0bbaa6384d55 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MetadataServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MetadataServiceStubSettings.java
@@ -125,6 +125,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -202,6 +203,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MetadataServiceStubSettings extends StubSettings<MetadataServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MigrationServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MigrationServiceStub.java
index 9e655b3975fc..8527ea870015 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MigrationServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MigrationServiceStub.java
@@ -39,6 +39,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MigrationServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MigrationServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MigrationServiceStubSettings.java
index 005d109f323c..eef5009c90a5 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MigrationServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/MigrationServiceStubSettings.java
@@ -70,6 +70,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MigrationServiceStubSettings extends StubSettings<MigrationServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ModelGardenServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ModelGardenServiceStub.java
index 7d1ff4c8a997..eb93ef9a58a3 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ModelGardenServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ModelGardenServiceStub.java
@@ -38,6 +38,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ModelGardenServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ModelGardenServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ModelGardenServiceStubSettings.java
index 574461076dae..b5097cb14da0 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ModelGardenServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ModelGardenServiceStubSettings.java
@@ -68,6 +68,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ModelGardenServiceStubSettings extends StubSettings<ModelGardenServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ModelServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ModelServiceStub.java
index a2889fa9d32d..06c2e1549806 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ModelServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ModelServiceStub.java
@@ -77,6 +77,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ModelServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ModelServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ModelServiceStubSettings.java
index a998b0325338..b3d179e1a44e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ModelServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ModelServiceStubSettings.java
@@ -108,6 +108,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -185,6 +186,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ModelServiceStubSettings extends StubSettings<ModelServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/NotebookServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/NotebookServiceStub.java
index 6667e3daaf53..c4bb1c60561d 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/NotebookServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/NotebookServiceStub.java
@@ -69,6 +69,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -76,6 +77,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NotebookServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/NotebookServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/NotebookServiceStubSettings.java
index 8efebe77d5f2..ad0d7595f73f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/NotebookServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/NotebookServiceStubSettings.java
@@ -99,6 +99,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -176,6 +177,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NotebookServiceStubSettings extends StubSettings<NotebookServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PersistentResourceServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PersistentResourceServiceStub.java
index e51c7c07f627..ab15c09df205 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PersistentResourceServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PersistentResourceServiceStub.java
@@ -47,6 +47,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PersistentResourceServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PersistentResourceServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PersistentResourceServiceStubSettings.java
index b819183b3a9c..9ac3553d7998 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PersistentResourceServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PersistentResourceServiceStubSettings.java
@@ -77,6 +77,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PersistentResourceServiceStubSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PipelineServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PipelineServiceStub.java
index 2fcce1c7a508..98d137546a1e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PipelineServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PipelineServiceStub.java
@@ -56,6 +56,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PipelineServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PipelineServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PipelineServiceStubSettings.java
index 5a6336ac7a3b..3f968caf4738 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PipelineServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PipelineServiceStubSettings.java
@@ -86,6 +86,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -163,6 +164,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PipelineServiceStubSettings extends StubSettings<PipelineServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PredictionServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PredictionServiceStub.java
index c6528df37bb7..8faf2b12e848 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PredictionServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PredictionServiceStub.java
@@ -55,6 +55,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PredictionServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PredictionServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PredictionServiceStubSettings.java
index 2a6e1c3bd05f..7556f44ba543 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PredictionServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/PredictionServiceStubSettings.java
@@ -82,6 +82,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -134,6 +135,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PredictionServiceStubSettings extends StubSettings<PredictionServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ReasoningEngineExecutionServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ReasoningEngineExecutionServiceStub.java
index 4f87abd33007..9ec1ddc10860 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ReasoningEngineExecutionServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ReasoningEngineExecutionServiceStub.java
@@ -43,6 +43,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ReasoningEngineExecutionServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ReasoningEngineExecutionServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ReasoningEngineExecutionServiceStubSettings.java
index 8e2a0facba11..e7f501089c27 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ReasoningEngineExecutionServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ReasoningEngineExecutionServiceStubSettings.java
@@ -73,6 +73,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ReasoningEngineExecutionServiceStubSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ReasoningEngineServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ReasoningEngineServiceStub.java
index d3f5cd3cd3f2..57d123a34838 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ReasoningEngineServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ReasoningEngineServiceStub.java
@@ -45,6 +45,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ReasoningEngineServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ReasoningEngineServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ReasoningEngineServiceStubSettings.java
index a0d15ad91d68..93508bf96c5f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ReasoningEngineServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ReasoningEngineServiceStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ReasoningEngineServiceStubSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ScheduleServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ScheduleServiceStub.java
index 7dcd581f233b..58472f1db86a 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ScheduleServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ScheduleServiceStub.java
@@ -45,6 +45,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ScheduleServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ScheduleServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ScheduleServiceStubSettings.java
index 534d5443ced9..a91921507bb6 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ScheduleServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/ScheduleServiceStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ScheduleServiceStubSettings extends StubSettings<ScheduleServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/SessionServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/SessionServiceStub.java
index f364faf56563..c8ff2667d4cb 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/SessionServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/SessionServiceStub.java
@@ -49,6 +49,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SessionServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/SessionServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/SessionServiceStubSettings.java
index 242552444881..5479fcc1c618 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/SessionServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/SessionServiceStubSettings.java
@@ -80,6 +80,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -157,6 +158,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SessionServiceStubSettings extends StubSettings<SessionServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/SpecialistPoolServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/SpecialistPoolServiceStub.java
index b9328baf8d9e..0b5066bfe4fd 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/SpecialistPoolServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/SpecialistPoolServiceStub.java
@@ -45,6 +45,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SpecialistPoolServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/SpecialistPoolServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/SpecialistPoolServiceStubSettings.java
index 8454c7eaa7e8..4d407330a155 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/SpecialistPoolServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/SpecialistPoolServiceStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SpecialistPoolServiceStubSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/TensorboardServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/TensorboardServiceStub.java
index f67d26e967eb..e91aa85cf978 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/TensorboardServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/TensorboardServiceStub.java
@@ -91,6 +91,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TensorboardServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/TensorboardServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/TensorboardServiceStubSettings.java
index 22b659355dcf..55b5ca4f1947 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/TensorboardServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/TensorboardServiceStubSettings.java
@@ -122,6 +122,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -200,6 +201,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TensorboardServiceStubSettings extends StubSettings<TensorboardServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VertexRagDataServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VertexRagDataServiceStub.java
index d5e47091064a..3b73aecad47b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VertexRagDataServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VertexRagDataServiceStub.java
@@ -60,6 +60,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class VertexRagDataServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VertexRagDataServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VertexRagDataServiceStubSettings.java
index 2e97482eb1d0..5eed9ece4233 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VertexRagDataServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VertexRagDataServiceStubSettings.java
@@ -90,6 +90,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -168,6 +169,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class VertexRagDataServiceStubSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VertexRagServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VertexRagServiceStub.java
index 0497c0938423..ae603ea8c4a5 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VertexRagServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VertexRagServiceStub.java
@@ -44,6 +44,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class VertexRagServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VertexRagServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VertexRagServiceStubSettings.java
index 417448dd6b07..65b91f07943f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VertexRagServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VertexRagServiceStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class VertexRagServiceStubSettings extends StubSettings<VertexRagServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VizierServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VizierServiceStub.java
index e9e801484af5..4ebe4c9883c8 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VizierServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VizierServiceStub.java
@@ -60,6 +60,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class VizierServiceStub implements BackgroundResource {
 
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VizierServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VizierServiceStubSettings.java
index a9e43fcbee84..e1f91541dd55 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VizierServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/stub/VizierServiceStubSettings.java
@@ -90,6 +90,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class VizierServiceStubSettings extends StubSettings<VizierServiceStubSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/DatasetServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/DatasetServiceClient.java
index 263329908b99..f1cac91c9e13 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/DatasetServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/DatasetServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -589,6 +590,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DatasetServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/DatasetServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/DatasetServiceSettings.java
index bbc2e96d6b4d..e4dcd542d2fa 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/DatasetServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/DatasetServiceSettings.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -128,6 +129,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DatasetServiceSettings extends ClientSettings<DatasetServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/DeploymentResourcePoolServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/DeploymentResourcePoolServiceClient.java
index b5eb9f01ea99..62abeececd6d 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/DeploymentResourcePoolServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/DeploymentResourcePoolServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -314,6 +315,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DeploymentResourcePoolServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/DeploymentResourcePoolServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/DeploymentResourcePoolServiceSettings.java
index 22ddf96b1ad7..06f5fbd470aa 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/DeploymentResourcePoolServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/DeploymentResourcePoolServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DeploymentResourcePoolServiceSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/EndpointServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/EndpointServiceClient.java
index 731c11e681ad..b20105b6ac74 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/EndpointServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/EndpointServiceClient.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -413,6 +414,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EndpointServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/EndpointServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/EndpointServiceSettings.java
index 1ad64315143a..d8632b353122 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/EndpointServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/EndpointServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EndpointServiceSettings extends ClientSettings<EndpointServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/EvaluationServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/EvaluationServiceClient.java
index 0a63c5ffbde5..ea0ad9062194 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/EvaluationServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/EvaluationServiceClient.java
@@ -45,6 +45,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -242,6 +243,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EvaluationServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/EvaluationServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/EvaluationServiceSettings.java
index 5a905269909e..35003bc03ab2 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/EvaluationServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/EvaluationServiceSettings.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EvaluationServiceSettings extends ClientSettings<EvaluationServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExampleStoreServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExampleStoreServiceClient.java
index d1c25ab7bc97..75ecd2c5d687 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExampleStoreServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExampleStoreServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -349,6 +350,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ExampleStoreServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExampleStoreServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExampleStoreServiceSettings.java
index 6b3bf3a575c0..d17e7bbb7e84 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExampleStoreServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExampleStoreServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ExampleStoreServiceSettings extends ClientSettings<ExampleStoreServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionExecutionServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionExecutionServiceClient.java
index 811350c28c15..9a2451d0023c 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionExecutionServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionExecutionServiceClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -229,6 +230,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ExtensionExecutionServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionExecutionServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionExecutionServiceSettings.java
index 021d20ee6398..87f833401ddc 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionExecutionServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionExecutionServiceSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -94,6 +95,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ExtensionExecutionServiceSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionRegistryServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionRegistryServiceClient.java
index 15a8446db625..77252d28f2bd 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionRegistryServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionRegistryServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -292,6 +293,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ExtensionRegistryServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionRegistryServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionRegistryServiceSettings.java
index 16d96b732437..3fb8116215e8 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionRegistryServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionRegistryServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ExtensionRegistryServiceSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreAdminServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreAdminServiceClient.java
index 3062a7de8418..2d49c0dad629 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreAdminServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreAdminServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -451,6 +452,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FeatureOnlineStoreAdminServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreAdminServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreAdminServiceSettings.java
index e6216a1f860b..c40562e69745 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreAdminServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreAdminServiceSettings.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FeatureOnlineStoreAdminServiceSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreServiceClient.java
index 0b7a9bbe48f8..96f9c5f9cb0b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreServiceClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -260,6 +261,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FeatureOnlineStoreServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreServiceSettings.java
index 74232db402f2..08837fb6e594 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreServiceSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -95,6 +96,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FeatureOnlineStoreServiceSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureRegistryServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureRegistryServiceClient.java
index f02b4683294f..b993ba123810 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureRegistryServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureRegistryServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -567,6 +568,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FeatureRegistryServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureRegistryServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureRegistryServiceSettings.java
index 4045304eed1b..e9e50a578517 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureRegistryServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureRegistryServiceSettings.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FeatureRegistryServiceSettings extends ClientSettings<FeatureRegistryServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreOnlineServingServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreOnlineServingServiceClient.java
index 5783b152dfef..949d3427d6a2 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreOnlineServingServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreOnlineServingServiceClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -241,6 +242,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FeaturestoreOnlineServingServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreOnlineServingServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreOnlineServingServiceSettings.java
index 57cc262dc899..aaa8ec3042f7 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreOnlineServingServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreOnlineServingServiceSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -96,6 +97,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FeaturestoreOnlineServingServiceSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreServiceClient.java
index 155286c5ac30..d202799f20ae 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -626,6 +627,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FeaturestoreServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreServiceSettings.java
index 56ff26872183..a2867916cf41 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreServiceSettings.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FeaturestoreServiceSettings extends ClientSettings<FeaturestoreServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/GenAiCacheServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/GenAiCacheServiceClient.java
index 20bcfcb9ed74..c41c6ea5583e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/GenAiCacheServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/GenAiCacheServiceClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -286,6 +287,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GenAiCacheServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/GenAiCacheServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/GenAiCacheServiceSettings.java
index a112ce4c5d33..87134641be96 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/GenAiCacheServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/GenAiCacheServiceSettings.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -95,6 +96,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GenAiCacheServiceSettings extends ClientSettings<GenAiCacheServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/GenAiTuningServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/GenAiTuningServiceClient.java
index ad5207cbbb08..729dd8d86694 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/GenAiTuningServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/GenAiTuningServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -291,6 +292,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GenAiTuningServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/GenAiTuningServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/GenAiTuningServiceSettings.java
index 5cec300cacf7..d331d7940d36 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/GenAiTuningServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/GenAiTuningServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GenAiTuningServiceSettings extends ClientSettings<GenAiTuningServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexEndpointServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexEndpointServiceClient.java
index f19b4a90272a..3a46d80d0747 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexEndpointServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexEndpointServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -352,6 +353,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class IndexEndpointServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexEndpointServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexEndpointServiceSettings.java
index 0059319ead54..f1b9abf436e4 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexEndpointServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexEndpointServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class IndexEndpointServiceSettings extends ClientSettings<IndexEndpointServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexServiceClient.java
index c41f922a1279..3854dadd52c2 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -332,6 +333,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class IndexServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexServiceSettings.java
index 7bd6599b5ac0..84a9f6154ad9 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class IndexServiceSettings extends ClientSettings<IndexServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/JobServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/JobServiceClient.java
index f3d0856e9fce..2ec130dd2bbd 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/JobServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/JobServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -872,6 +873,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class JobServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/JobServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/JobServiceSettings.java
index 815352d60328..d664d9761d6b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/JobServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/JobServiceSettings.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -128,6 +129,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class JobServiceSettings extends ClientSettings<JobServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/LlmUtilityServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/LlmUtilityServiceClient.java
index a7ce514b795b..d68a7c0db56d 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/LlmUtilityServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/LlmUtilityServiceClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -210,6 +211,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LlmUtilityServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/LlmUtilityServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/LlmUtilityServiceSettings.java
index 1590eefc705c..e1a653bcb865 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/LlmUtilityServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/LlmUtilityServiceSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -93,6 +94,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LlmUtilityServiceSettings extends ClientSettings<LlmUtilityServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MatchServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MatchServiceClient.java
index 857c4798e525..4a1ba42111c4 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MatchServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MatchServiceClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -221,6 +222,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MatchServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MatchServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MatchServiceSettings.java
index 52270990afcc..08fbf5b593b1 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MatchServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MatchServiceSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MatchServiceSettings extends ClientSettings<MatchServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MemoryBankServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MemoryBankServiceClient.java
index 0b07cc3143c4..92bc99f297cf 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MemoryBankServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MemoryBankServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -331,6 +332,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MemoryBankServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MemoryBankServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MemoryBankServiceSettings.java
index bd45f38bd33d..3fe085e495bc 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MemoryBankServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MemoryBankServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MemoryBankServiceSettings extends ClientSettings<MemoryBankServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MetadataServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MetadataServiceClient.java
index 15484b2c06c3..6fd4ba8fb083 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MetadataServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MetadataServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -812,6 +813,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MetadataServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MetadataServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MetadataServiceSettings.java
index 03a1c72349b2..052e6e5e69ab 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MetadataServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MetadataServiceSettings.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MetadataServiceSettings extends ClientSettings<MetadataServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MigrationServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MigrationServiceClient.java
index 48b7aa596638..7dbd4dd0c850 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MigrationServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MigrationServiceClient.java
@@ -45,6 +45,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -233,6 +234,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MigrationServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MigrationServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MigrationServiceSettings.java
index f883c5d79dd7..e809b8797556 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MigrationServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/MigrationServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MigrationServiceSettings extends ClientSettings<MigrationServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelGardenServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelGardenServiceClient.java
index 8e813b99dc11..60a814c87f8d 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelGardenServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelGardenServiceClient.java
@@ -45,6 +45,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -317,6 +318,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ModelGardenServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelGardenServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelGardenServiceSettings.java
index 66412087be9c..48b7678163de 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelGardenServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelGardenServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ModelGardenServiceSettings extends ClientSettings<ModelGardenServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelMonitoringServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelMonitoringServiceClient.java
index cf4b5c4a009c..3ff6ad349e98 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelMonitoringServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelMonitoringServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -412,6 +413,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ModelMonitoringServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelMonitoringServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelMonitoringServiceSettings.java
index ff2c2a2862bb..380dcc4836e1 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelMonitoringServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelMonitoringServiceSettings.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ModelMonitoringServiceSettings extends ClientSettings<ModelMonitoringServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelServiceClient.java
index a9fdf5a0748f..31e1fd287c17 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -580,6 +581,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ModelServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelServiceSettings.java
index 0d6b592391ae..be6ba552f625 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelServiceSettings.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ModelServiceSettings extends ClientSettings<ModelServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookServiceClient.java
index 25e441f2ef68..bab391fc8f22 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -512,6 +513,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class NotebookServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookServiceSettings.java
index 2d013f2dbbf8..a2b8fe307865 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookServiceSettings.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class NotebookServiceSettings extends ClientSettings<NotebookServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/OnlineEvaluatorServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/OnlineEvaluatorServiceClient.java
index f934acd4ed42..317e3240c88e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/OnlineEvaluatorServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/OnlineEvaluatorServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -334,6 +335,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class OnlineEvaluatorServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/OnlineEvaluatorServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/OnlineEvaluatorServiceSettings.java
index e4ad1ba14695..025f9ec9bd47 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/OnlineEvaluatorServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/OnlineEvaluatorServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class OnlineEvaluatorServiceSettings extends ClientSettings<OnlineEvaluatorServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PersistentResourceServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PersistentResourceServiceClient.java
index 2c272e7c3e48..330373b29518 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PersistentResourceServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PersistentResourceServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -314,6 +315,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PersistentResourceServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PersistentResourceServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PersistentResourceServiceSettings.java
index f57867352e49..5443a25a0538 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PersistentResourceServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PersistentResourceServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PersistentResourceServiceSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PipelineServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PipelineServiceClient.java
index bbda0ddcd208..b06980a2f33b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PipelineServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PipelineServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -431,6 +432,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PipelineServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PipelineServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PipelineServiceSettings.java
index 07ad557d1928..744cef895d4b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PipelineServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PipelineServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PipelineServiceSettings extends ClientSettings<PipelineServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PredictionServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PredictionServiceClient.java
index 11179334839e..dce2eb9580bb 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PredictionServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PredictionServiceClient.java
@@ -45,6 +45,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -424,6 +425,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PredictionServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PredictionServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PredictionServiceSettings.java
index 954ca8175adc..b895d671ad29 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PredictionServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/PredictionServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -96,6 +97,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PredictionServiceSettings extends ClientSettings<PredictionServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineExecutionServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineExecutionServiceClient.java
index d25f6c5d6c7e..6dc1899697b0 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineExecutionServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineExecutionServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -256,6 +257,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ReasoningEngineExecutionServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineExecutionServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineExecutionServiceSettings.java
index 8a347b4d842a..d333a562a160 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineExecutionServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineExecutionServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ReasoningEngineExecutionServiceSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineRuntimeRevisionServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineRuntimeRevisionServiceClient.java
index bc9d31cb3e5d..3c511f3da2eb 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineRuntimeRevisionServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineRuntimeRevisionServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -258,6 +259,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ReasoningEngineRuntimeRevisionServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineRuntimeRevisionServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineRuntimeRevisionServiceSettings.java
index 442867cdb7af..d2e11d705066 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineRuntimeRevisionServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineRuntimeRevisionServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ReasoningEngineRuntimeRevisionServiceSettings
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineServiceClient.java
index e3bf5c81b64a..63159f78455e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -294,6 +295,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ReasoningEngineServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineServiceSettings.java
index 4d3b6ef55903..1b91eda14a9a 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ReasoningEngineServiceSettings extends ClientSettings<ReasoningEngineServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ScheduleServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ScheduleServiceClient.java
index 45d61f4999e7..ab0220fee5e0 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ScheduleServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ScheduleServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -334,6 +335,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ScheduleServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ScheduleServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ScheduleServiceSettings.java
index e12825f66f0b..332614b98211 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ScheduleServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ScheduleServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ScheduleServiceSettings extends ClientSettings<ScheduleServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/SessionServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/SessionServiceClient.java
index e576ad1be8cb..88831e295d41 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/SessionServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/SessionServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -330,6 +331,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SessionServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/SessionServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/SessionServiceSettings.java
index a2182b026738..c2f891a63361 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/SessionServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/SessionServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SessionServiceSettings extends ClientSettings<SessionServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/SpecialistPoolServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/SpecialistPoolServiceClient.java
index fcc220116077..a4e902d690b4 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/SpecialistPoolServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/SpecialistPoolServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -298,6 +299,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SpecialistPoolServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/SpecialistPoolServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/SpecialistPoolServiceSettings.java
index 4ec9ac1d7c9a..56e042448e8b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/SpecialistPoolServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/SpecialistPoolServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SpecialistPoolServiceSettings extends ClientSettings<SpecialistPoolServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardServiceClient.java
index 301c0851b54d..2b5a7a92a159 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardServiceClient.java
@@ -48,6 +48,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -757,6 +758,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TensorboardServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardServiceSettings.java
index 5fdafd12d364..42f7b68708da 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardServiceSettings.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TensorboardServiceSettings extends ClientSettings<TensorboardServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VertexRagDataServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VertexRagDataServiceClient.java
index c84c6703df16..6ca03ebfb36f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VertexRagDataServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VertexRagDataServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -660,6 +661,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VertexRagDataServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VertexRagDataServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VertexRagDataServiceSettings.java
index 2123dc95626b..5c6a3542a9ab 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VertexRagDataServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VertexRagDataServiceSettings.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VertexRagDataServiceSettings extends ClientSettings<VertexRagDataServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VertexRagServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VertexRagServiceClient.java
index 11988ac5cbae..f0d6c166e068 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VertexRagServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VertexRagServiceClient.java
@@ -45,6 +45,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -289,6 +290,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VertexRagServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VertexRagServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VertexRagServiceSettings.java
index dce8aed5dc3f..a478139e0334 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VertexRagServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VertexRagServiceSettings.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VertexRagServiceSettings extends ClientSettings<VertexRagServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VizierServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VizierServiceClient.java
index 1cea14589bf2..40d241a748f5 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VizierServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VizierServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -458,6 +459,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VizierServiceClient implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VizierServiceSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VizierServiceSettings.java
index e977e9814bff..a0d46b30d637 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VizierServiceSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/VizierServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VizierServiceSettings extends ClientSettings<VizierServiceSettings> {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/DatasetServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/DatasetServiceStub.java
index a1b5a0255820..adc72230366d 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/DatasetServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/DatasetServiceStub.java
@@ -83,6 +83,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DatasetServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/DatasetServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/DatasetServiceStubSettings.java
index 563403f04c19..9fd73ad88e75 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/DatasetServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/DatasetServiceStubSettings.java
@@ -117,6 +117,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -194,6 +195,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/DeploymentResourcePoolServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/DeploymentResourcePoolServiceStub.java
index b305234a8127..90067e68ea4b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/DeploymentResourcePoolServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/DeploymentResourcePoolServiceStub.java
@@ -49,6 +49,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DeploymentResourcePoolServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/DeploymentResourcePoolServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/DeploymentResourcePoolServiceStubSettings.java
index 6bfeac404dc0..5eb163a3768b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/DeploymentResourcePoolServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/DeploymentResourcePoolServiceStubSettings.java
@@ -80,6 +80,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -158,6 +159,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/EndpointServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/EndpointServiceStub.java
index f625ad9f018c..25b400a7254f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/EndpointServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/EndpointServiceStub.java
@@ -60,6 +60,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class EndpointServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/EndpointServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/EndpointServiceStubSettings.java
index 681cfda50425..1d17900bc2c5 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/EndpointServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/EndpointServiceStubSettings.java
@@ -90,6 +90,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/EvaluationServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/EvaluationServiceStub.java
index 7c5355d6a794..72fd95eb8c81 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/EvaluationServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/EvaluationServiceStub.java
@@ -41,6 +41,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class EvaluationServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/EvaluationServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/EvaluationServiceStubSettings.java
index a4a51bbd3979..019d3b76c836 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/EvaluationServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/EvaluationServiceStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -149,6 +150,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExampleStoreServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExampleStoreServiceStub.java
index cb3580ae1905..9c16d718ace2 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExampleStoreServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExampleStoreServiceStub.java
@@ -55,6 +55,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ExampleStoreServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExampleStoreServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExampleStoreServiceStubSettings.java
index e3e0aa532576..bcca2f6bcbcd 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExampleStoreServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExampleStoreServiceStubSettings.java
@@ -86,6 +86,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -164,6 +165,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExtensionExecutionServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExtensionExecutionServiceStub.java
index fac8e8c38d3b..c34f4714b0f2 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExtensionExecutionServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExtensionExecutionServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ExtensionExecutionServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExtensionExecutionServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExtensionExecutionServiceStubSettings.java
index 2f67c7ba69ae..7940f3803ed7 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExtensionExecutionServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExtensionExecutionServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExtensionRegistryServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExtensionRegistryServiceStub.java
index d2d99118ba1a..e15ae3aaeefa 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExtensionRegistryServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExtensionRegistryServiceStub.java
@@ -45,6 +45,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ExtensionRegistryServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExtensionRegistryServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExtensionRegistryServiceStubSettings.java
index 2abc14a5ccda..0c65139ddfc2 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExtensionRegistryServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ExtensionRegistryServiceStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureOnlineStoreAdminServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureOnlineStoreAdminServiceStub.java
index 76e0f3deac26..6a1e378e5f72 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureOnlineStoreAdminServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureOnlineStoreAdminServiceStub.java
@@ -63,6 +63,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class FeatureOnlineStoreAdminServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureOnlineStoreAdminServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureOnlineStoreAdminServiceStubSettings.java
index 4837a17cd289..0d7c5a72cf28 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureOnlineStoreAdminServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureOnlineStoreAdminServiceStubSettings.java
@@ -93,6 +93,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -173,6 +174,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureOnlineStoreServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureOnlineStoreServiceStub.java
index f2e20dae4e55..128d9c6007c5 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureOnlineStoreServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureOnlineStoreServiceStub.java
@@ -42,6 +42,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class FeatureOnlineStoreServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureOnlineStoreServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureOnlineStoreServiceStubSettings.java
index 76e6874e76ab..b95389e52e08 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureOnlineStoreServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureOnlineStoreServiceStubSettings.java
@@ -69,6 +69,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureRegistryServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureRegistryServiceStub.java
index 0e6f6ec04f97..8cd866fc05cf 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureRegistryServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureRegistryServiceStub.java
@@ -75,6 +75,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class FeatureRegistryServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureRegistryServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureRegistryServiceStubSettings.java
index bca7046933ce..37fe4a3fcdcf 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureRegistryServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeatureRegistryServiceStubSettings.java
@@ -105,6 +105,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -183,6 +184,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeaturestoreOnlineServingServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeaturestoreOnlineServingServiceStub.java
index 993655fa5ab6..63060f9b84d2 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeaturestoreOnlineServingServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeaturestoreOnlineServingServiceStub.java
@@ -37,6 +37,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class FeaturestoreOnlineServingServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeaturestoreOnlineServingServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeaturestoreOnlineServingServiceStubSettings.java
index 8431504ab276..3bb84e5d12b7 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeaturestoreOnlineServingServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeaturestoreOnlineServingServiceStubSettings.java
@@ -65,6 +65,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeaturestoreServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeaturestoreServiceStub.java
index 656d0f0cbbf1..4651441e43af 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeaturestoreServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeaturestoreServiceStub.java
@@ -82,6 +82,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class FeaturestoreServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeaturestoreServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeaturestoreServiceStubSettings.java
index 4a2cbef49c3c..c944d2bffc3d 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeaturestoreServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/FeaturestoreServiceStubSettings.java
@@ -112,6 +112,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -190,6 +191,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GenAiCacheServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GenAiCacheServiceStub.java
index 64fc4cd4eff4..1ddaf2657455 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GenAiCacheServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GenAiCacheServiceStub.java
@@ -40,6 +40,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class GenAiCacheServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GenAiCacheServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GenAiCacheServiceStubSettings.java
index 793c26b6dcc9..3c3270d03f99 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GenAiCacheServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GenAiCacheServiceStubSettings.java
@@ -67,6 +67,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GenAiTuningServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GenAiTuningServiceStub.java
index 362fb8384791..5455e5e663c4 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GenAiTuningServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GenAiTuningServiceStub.java
@@ -44,6 +44,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class GenAiTuningServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GenAiTuningServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GenAiTuningServiceStubSettings.java
index 602444d50508..b21f0792f851 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GenAiTuningServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GenAiTuningServiceStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcDatasetServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcDatasetServiceCallableFactory.java
index d78fbc86a27a..75833db5813e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcDatasetServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcDatasetServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDatasetServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcDatasetServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcDatasetServiceStub.java
index b3b46b7f08a8..d83040efcef8 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcDatasetServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcDatasetServiceStub.java
@@ -92,6 +92,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDatasetServiceStub extends DatasetServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcDeploymentResourcePoolServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcDeploymentResourcePoolServiceCallableFactory.java
index 56b7af29c87b..a1734061c1d4 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcDeploymentResourcePoolServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcDeploymentResourcePoolServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDeploymentResourcePoolServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcDeploymentResourcePoolServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcDeploymentResourcePoolServiceStub.java
index d9374b5a618d..862a5a6f6be7 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcDeploymentResourcePoolServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcDeploymentResourcePoolServiceStub.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDeploymentResourcePoolServiceStub extends DeploymentResourcePoolServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcEndpointServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcEndpointServiceCallableFactory.java
index aa3907285f5b..611c993f4879 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcEndpointServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcEndpointServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEndpointServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcEndpointServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcEndpointServiceStub.java
index fb9eaaa57c60..44ad60fbc831 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcEndpointServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcEndpointServiceStub.java
@@ -69,6 +69,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -76,6 +77,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEndpointServiceStub extends EndpointServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcEvaluationServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcEvaluationServiceCallableFactory.java
index e44d62df2648..571a78ebc086 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcEvaluationServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcEvaluationServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEvaluationServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcEvaluationServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcEvaluationServiceStub.java
index f244eaae41b3..84c937e5c957 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcEvaluationServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcEvaluationServiceStub.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEvaluationServiceStub extends EvaluationServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExampleStoreServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExampleStoreServiceCallableFactory.java
index ae6e827384a3..9dc1dde24cde 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExampleStoreServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExampleStoreServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcExampleStoreServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExampleStoreServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExampleStoreServiceStub.java
index 75c6e96623c7..fabdd212ac4b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExampleStoreServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExampleStoreServiceStub.java
@@ -64,6 +64,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcExampleStoreServiceStub extends ExampleStoreServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExtensionExecutionServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExtensionExecutionServiceCallableFactory.java
index f0fcaf6ebe74..0405a8b40892 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExtensionExecutionServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExtensionExecutionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcExtensionExecutionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExtensionExecutionServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExtensionExecutionServiceStub.java
index 69c16d7df8ed..7a25c5ff7b8b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExtensionExecutionServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExtensionExecutionServiceStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcExtensionExecutionServiceStub extends ExtensionExecutionServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExtensionRegistryServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExtensionRegistryServiceCallableFactory.java
index 712317cc2a53..727d56a0eca5 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExtensionRegistryServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExtensionRegistryServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcExtensionRegistryServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExtensionRegistryServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExtensionRegistryServiceStub.java
index 2bdec3f559c7..90b73f0ec70f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExtensionRegistryServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcExtensionRegistryServiceStub.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcExtensionRegistryServiceStub extends ExtensionRegistryServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureOnlineStoreAdminServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureOnlineStoreAdminServiceCallableFactory.java
index 410245305382..5640fdf73c2f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureOnlineStoreAdminServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureOnlineStoreAdminServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFeatureOnlineStoreAdminServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureOnlineStoreAdminServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureOnlineStoreAdminServiceStub.java
index dab9e12067b5..80c7349b1ab6 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureOnlineStoreAdminServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureOnlineStoreAdminServiceStub.java
@@ -72,6 +72,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -79,6 +80,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFeatureOnlineStoreAdminServiceStub extends FeatureOnlineStoreAdminServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureOnlineStoreServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureOnlineStoreServiceCallableFactory.java
index 91aed5501b05..3badac7111a4 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureOnlineStoreServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureOnlineStoreServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFeatureOnlineStoreServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureOnlineStoreServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureOnlineStoreServiceStub.java
index a1154d4bc562..2222166e050f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureOnlineStoreServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureOnlineStoreServiceStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFeatureOnlineStoreServiceStub extends FeatureOnlineStoreServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureRegistryServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureRegistryServiceCallableFactory.java
index 82fbee280c62..d1b04586b7dc 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureRegistryServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureRegistryServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFeatureRegistryServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureRegistryServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureRegistryServiceStub.java
index 7ab3044fce76..36296ba0045d 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureRegistryServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeatureRegistryServiceStub.java
@@ -84,6 +84,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFeatureRegistryServiceStub extends FeatureRegistryServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeaturestoreOnlineServingServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeaturestoreOnlineServingServiceCallableFactory.java
index d50f4b48d40e..25b7dfef3197 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeaturestoreOnlineServingServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeaturestoreOnlineServingServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFeaturestoreOnlineServingServiceCallableFactory
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeaturestoreOnlineServingServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeaturestoreOnlineServingServiceStub.java
index 35371ceef036..9ff2e771e4e9 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeaturestoreOnlineServingServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeaturestoreOnlineServingServiceStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFeaturestoreOnlineServingServiceStub extends FeaturestoreOnlineServingServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeaturestoreServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeaturestoreServiceCallableFactory.java
index 135c661404b7..881c777b30fd 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeaturestoreServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeaturestoreServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFeaturestoreServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeaturestoreServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeaturestoreServiceStub.java
index 1ec01670f204..de415edd73eb 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeaturestoreServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcFeaturestoreServiceStub.java
@@ -91,6 +91,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFeaturestoreServiceStub extends FeaturestoreServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcGenAiCacheServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcGenAiCacheServiceCallableFactory.java
index dbdd0be566eb..19c133ec2bef 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcGenAiCacheServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcGenAiCacheServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGenAiCacheServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcGenAiCacheServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcGenAiCacheServiceStub.java
index 1ac9021acaa8..bba9c416a40f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcGenAiCacheServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcGenAiCacheServiceStub.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGenAiCacheServiceStub extends GenAiCacheServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcGenAiTuningServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcGenAiTuningServiceCallableFactory.java
index 2d2016e730b0..4f450b81ab88 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcGenAiTuningServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcGenAiTuningServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGenAiTuningServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcGenAiTuningServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcGenAiTuningServiceStub.java
index 98baa8c37743..983a98a82607 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcGenAiTuningServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcGenAiTuningServiceStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGenAiTuningServiceStub extends GenAiTuningServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcIndexEndpointServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcIndexEndpointServiceCallableFactory.java
index 5e36127fcc76..a4ee9f9c5713 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcIndexEndpointServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcIndexEndpointServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcIndexEndpointServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcIndexEndpointServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcIndexEndpointServiceStub.java
index c746cc701a8f..b688edb6eb69 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcIndexEndpointServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcIndexEndpointServiceStub.java
@@ -63,6 +63,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcIndexEndpointServiceStub extends IndexEndpointServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcIndexServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcIndexServiceCallableFactory.java
index 3fe8113b49e0..02ccf93e357f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcIndexServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcIndexServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcIndexServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcIndexServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcIndexServiceStub.java
index dfc753d4fbbc..010bdd9816b7 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcIndexServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcIndexServiceStub.java
@@ -61,6 +61,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcIndexServiceStub extends IndexServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcJobServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcJobServiceCallableFactory.java
index b774d458849b..3ae84de09cf0 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcJobServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcJobServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcJobServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcJobServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcJobServiceStub.java
index 35590f5f1ceb..22112494ec42 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcJobServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcJobServiceStub.java
@@ -104,6 +104,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcJobServiceStub extends JobServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcLlmUtilityServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcLlmUtilityServiceCallableFactory.java
index efc6e24e55e3..4984e347463a 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcLlmUtilityServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcLlmUtilityServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLlmUtilityServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcLlmUtilityServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcLlmUtilityServiceStub.java
index 20555fd7f4ce..111f4c5bf89a 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcLlmUtilityServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcLlmUtilityServiceStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLlmUtilityServiceStub extends LlmUtilityServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMatchServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMatchServiceCallableFactory.java
index 91ccc790c4c0..ea0e42d952ac 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMatchServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMatchServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMatchServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMatchServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMatchServiceStub.java
index 365e3b5eaf93..b5686a17c8fb 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMatchServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMatchServiceStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMatchServiceStub extends MatchServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMemoryBankServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMemoryBankServiceCallableFactory.java
index 01e47e03ea75..1e487be271ab 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMemoryBankServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMemoryBankServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMemoryBankServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMemoryBankServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMemoryBankServiceStub.java
index 2d40703cee92..e1230ae0b11b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMemoryBankServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMemoryBankServiceStub.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMemoryBankServiceStub extends MemoryBankServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMetadataServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMetadataServiceCallableFactory.java
index 94604029ee35..f5bb7c7c5131 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMetadataServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMetadataServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMetadataServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMetadataServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMetadataServiceStub.java
index f0a9b53d2ed2..eec2e761e0e9 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMetadataServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMetadataServiceStub.java
@@ -105,6 +105,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMetadataServiceStub extends MetadataServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMigrationServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMigrationServiceCallableFactory.java
index 86a7c05891c8..b6ff533ff50a 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMigrationServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMigrationServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMigrationServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMigrationServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMigrationServiceStub.java
index 4185a453a92c..84b2956b799a 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMigrationServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcMigrationServiceStub.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMigrationServiceStub extends MigrationServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelGardenServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelGardenServiceCallableFactory.java
index 1271d7d1a90f..3251fa398016 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelGardenServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelGardenServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcModelGardenServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelGardenServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelGardenServiceStub.java
index e989738578fc..14c1afee2926 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelGardenServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelGardenServiceStub.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcModelGardenServiceStub extends ModelGardenServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelMonitoringServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelMonitoringServiceCallableFactory.java
index 3328172179d4..65104b3aa140 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelMonitoringServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelMonitoringServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcModelMonitoringServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelMonitoringServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelMonitoringServiceStub.java
index a22b1b60b6f9..cca79148b294 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelMonitoringServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelMonitoringServiceStub.java
@@ -68,6 +68,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcModelMonitoringServiceStub extends ModelMonitoringServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelServiceCallableFactory.java
index b67585e1b767..5b06daa12771 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcModelServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelServiceStub.java
index d7c17ed56517..fb2bb1eb24dd 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcModelServiceStub.java
@@ -89,6 +89,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -96,6 +97,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcModelServiceStub extends ModelServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcNotebookServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcNotebookServiceCallableFactory.java
index d08dfd45651a..039073c9e70e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcNotebookServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcNotebookServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcNotebookServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcNotebookServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcNotebookServiceStub.java
index b5c31078ecca..84a9297231fc 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcNotebookServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcNotebookServiceStub.java
@@ -79,6 +79,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcNotebookServiceStub extends NotebookServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcOnlineEvaluatorServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcOnlineEvaluatorServiceCallableFactory.java
index 248b0b42b394..bafd4ef56e05 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcOnlineEvaluatorServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcOnlineEvaluatorServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcOnlineEvaluatorServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcOnlineEvaluatorServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcOnlineEvaluatorServiceStub.java
index a648166fb4cc..0654c7e95e14 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcOnlineEvaluatorServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcOnlineEvaluatorServiceStub.java
@@ -59,6 +59,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcOnlineEvaluatorServiceStub extends OnlineEvaluatorServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPersistentResourceServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPersistentResourceServiceCallableFactory.java
index 9a0cb2c17954..c8a920fe471f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPersistentResourceServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPersistentResourceServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPersistentResourceServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPersistentResourceServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPersistentResourceServiceStub.java
index 9f9b3f4a519c..958006b3911f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPersistentResourceServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPersistentResourceServiceStub.java
@@ -57,6 +57,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPersistentResourceServiceStub extends PersistentResourceServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPipelineServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPipelineServiceCallableFactory.java
index 877913437f74..60840ad0f07f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPipelineServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPipelineServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPipelineServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPipelineServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPipelineServiceStub.java
index 77cca9669fa3..e6b494462473 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPipelineServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPipelineServiceStub.java
@@ -66,6 +66,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPipelineServiceStub extends PipelineServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPredictionServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPredictionServiceCallableFactory.java
index cf650baf9fab..1de8b11c19c8 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPredictionServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPredictionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPredictionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPredictionServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPredictionServiceStub.java
index e08e212f92c2..9bd4a00b380c 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPredictionServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcPredictionServiceStub.java
@@ -69,6 +69,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -76,6 +77,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPredictionServiceStub extends PredictionServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineExecutionServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineExecutionServiceCallableFactory.java
index f3a2cdc484f0..3c26cc306fd7 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineExecutionServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineExecutionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcReasoningEngineExecutionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineExecutionServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineExecutionServiceStub.java
index a472babfe8b9..99d8b03d8089 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineExecutionServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineExecutionServiceStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcReasoningEngineExecutionServiceStub extends ReasoningEngineExecutionServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineRuntimeRevisionServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineRuntimeRevisionServiceCallableFactory.java
index 774c5fefaa06..105a9fe5d42c 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineRuntimeRevisionServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineRuntimeRevisionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcReasoningEngineRuntimeRevisionServiceCallableFactory
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineRuntimeRevisionServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineRuntimeRevisionServiceStub.java
index 455824bbff1f..852b2b7d05cb 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineRuntimeRevisionServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineRuntimeRevisionServiceStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcReasoningEngineRuntimeRevisionServiceStub
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineServiceCallableFactory.java
index 683e41820aa6..f8fbb9a1a497 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcReasoningEngineServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineServiceStub.java
index cb8d1fb0e541..7e67dc60b426 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcReasoningEngineServiceStub.java
@@ -55,6 +55,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcReasoningEngineServiceStub extends ReasoningEngineServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcScheduleServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcScheduleServiceCallableFactory.java
index d6c9a55299ad..f3318d1ba23f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcScheduleServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcScheduleServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcScheduleServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcScheduleServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcScheduleServiceStub.java
index bab5505238a7..39cb515274a1 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcScheduleServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcScheduleServiceStub.java
@@ -55,6 +55,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcScheduleServiceStub extends ScheduleServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcSessionServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcSessionServiceCallableFactory.java
index 78ad2d080d39..fa60af980d3d 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcSessionServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcSessionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSessionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcSessionServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcSessionServiceStub.java
index 7b584f37c53d..bce39b90d33c 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcSessionServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcSessionServiceStub.java
@@ -59,6 +59,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSessionServiceStub extends SessionServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcSpecialistPoolServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcSpecialistPoolServiceCallableFactory.java
index d3fd97e43459..5a1018fb34c3 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcSpecialistPoolServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcSpecialistPoolServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSpecialistPoolServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcSpecialistPoolServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcSpecialistPoolServiceStub.java
index 62328ab7e235..d4e37401caf6 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcSpecialistPoolServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcSpecialistPoolServiceStub.java
@@ -55,6 +55,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSpecialistPoolServiceStub extends SpecialistPoolServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcTensorboardServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcTensorboardServiceCallableFactory.java
index 5990f70915ff..92be66d9f67d 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcTensorboardServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcTensorboardServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTensorboardServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcTensorboardServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcTensorboardServiceStub.java
index be131a503473..d346d36965c4 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcTensorboardServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcTensorboardServiceStub.java
@@ -101,6 +101,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTensorboardServiceStub extends TensorboardServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVertexRagDataServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVertexRagDataServiceCallableFactory.java
index fa98711f94c4..89510741bd5b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVertexRagDataServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVertexRagDataServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVertexRagDataServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVertexRagDataServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVertexRagDataServiceStub.java
index f0de6ed4fda2..b9aba6959b9c 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVertexRagDataServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVertexRagDataServiceStub.java
@@ -93,6 +93,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVertexRagDataServiceStub extends VertexRagDataServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVertexRagServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVertexRagServiceCallableFactory.java
index 68f8d4c38610..54f2d2286de1 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVertexRagServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVertexRagServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVertexRagServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVertexRagServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVertexRagServiceStub.java
index aa1d90bdb6be..63ee809d4a56 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVertexRagServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVertexRagServiceStub.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVertexRagServiceStub extends VertexRagServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVizierServiceCallableFactory.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVizierServiceCallableFactory.java
index 3931b0ee39c0..1d54b3b25af2 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVizierServiceCallableFactory.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVizierServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVizierServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVizierServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVizierServiceStub.java
index 531da04df637..d4424d619107 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVizierServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/GrpcVizierServiceStub.java
@@ -70,6 +70,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVizierServiceStub extends VizierServiceStub {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/IndexEndpointServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/IndexEndpointServiceStub.java
index be852dcb59dc..8ca26836806f 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/IndexEndpointServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/IndexEndpointServiceStub.java
@@ -54,6 +54,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class IndexEndpointServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/IndexEndpointServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/IndexEndpointServiceStubSettings.java
index a37e4e323425..5314703b2e95 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/IndexEndpointServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/IndexEndpointServiceStubSettings.java
@@ -84,6 +84,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -162,6 +163,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/IndexServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/IndexServiceStub.java
index 2aa21d49dc89..8d9fdcda9c80 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/IndexServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/IndexServiceStub.java
@@ -52,6 +52,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class IndexServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/IndexServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/IndexServiceStubSettings.java
index e9824b5a7171..6487e99e2c80 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/IndexServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/IndexServiceStubSettings.java
@@ -82,6 +82,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -159,6 +160,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/JobServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/JobServiceStub.java
index 96404a7f8134..a7cbea3082b7 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/JobServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/JobServiceStub.java
@@ -95,6 +95,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class JobServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/JobServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/JobServiceStubSettings.java
index be604aa6669d..633bf8e1acec 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/JobServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/JobServiceStubSettings.java
@@ -126,6 +126,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -201,6 +202,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/LlmUtilityServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/LlmUtilityServiceStub.java
index 1b50f393d2b4..14baad94ef11 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/LlmUtilityServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/LlmUtilityServiceStub.java
@@ -33,6 +33,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class LlmUtilityServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/LlmUtilityServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/LlmUtilityServiceStubSettings.java
index e08c8fd184b6..32de2a19b63a 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/LlmUtilityServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/LlmUtilityServiceStubSettings.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MatchServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MatchServiceStub.java
index 2c9afe1169bd..fc37bfc5f761 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MatchServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MatchServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class MatchServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MatchServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MatchServiceStubSettings.java
index 307805105961..2da0eeac4d48 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MatchServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MatchServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MemoryBankServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MemoryBankServiceStub.java
index 7277badfd7e7..a7d89884c925 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MemoryBankServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MemoryBankServiceStub.java
@@ -51,6 +51,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class MemoryBankServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MemoryBankServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MemoryBankServiceStubSettings.java
index acc4ed96e60d..b2757e011419 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MemoryBankServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MemoryBankServiceStubSettings.java
@@ -81,6 +81,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -159,6 +160,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MetadataServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MetadataServiceStub.java
index 8aa44e72a4df..8ebf54e5e63a 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MetadataServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MetadataServiceStub.java
@@ -96,6 +96,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class MetadataServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MetadataServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MetadataServiceStubSettings.java
index 7d9e65069313..3a8791a06b0c 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MetadataServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MetadataServiceStubSettings.java
@@ -126,6 +126,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -203,6 +204,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MigrationServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MigrationServiceStub.java
index 2271ab86583b..aa86f189fb20 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MigrationServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MigrationServiceStub.java
@@ -40,6 +40,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class MigrationServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MigrationServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MigrationServiceStubSettings.java
index a7068bae12d5..999034136db1 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MigrationServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/MigrationServiceStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelGardenServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelGardenServiceStub.java
index 9972ab42f825..9eff2414cc74 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelGardenServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelGardenServiceStub.java
@@ -51,6 +51,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ModelGardenServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelGardenServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelGardenServiceStubSettings.java
index 963603a807d6..a225689d900e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelGardenServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelGardenServiceStubSettings.java
@@ -81,6 +81,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -159,6 +160,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelMonitoringServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelMonitoringServiceStub.java
index b4a10af5ec44..448a338c9a03 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelMonitoringServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelMonitoringServiceStub.java
@@ -59,6 +59,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ModelMonitoringServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelMonitoringServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelMonitoringServiceStubSettings.java
index b2cbbefa24b2..407c6f68e136 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelMonitoringServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelMonitoringServiceStubSettings.java
@@ -91,6 +91,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -169,6 +170,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelServiceStub.java
index 0ba4232f7f27..ff5b6db44fcb 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelServiceStub.java
@@ -80,6 +80,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ModelServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelServiceStubSettings.java
index 19ffd71c30ee..de579c2c856c 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ModelServiceStubSettings.java
@@ -111,6 +111,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -188,6 +189,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/NotebookServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/NotebookServiceStub.java
index 4aee6f0f34e3..08a0aaee3b25 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/NotebookServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/NotebookServiceStub.java
@@ -70,6 +70,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class NotebookServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/NotebookServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/NotebookServiceStubSettings.java
index d7acfb33ec0a..e212a2416f06 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/NotebookServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/NotebookServiceStubSettings.java
@@ -100,6 +100,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -177,6 +178,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/OnlineEvaluatorServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/OnlineEvaluatorServiceStub.java
index 1b11ec216ff2..381f2a69c76c 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/OnlineEvaluatorServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/OnlineEvaluatorServiceStub.java
@@ -50,6 +50,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class OnlineEvaluatorServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/OnlineEvaluatorServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/OnlineEvaluatorServiceStubSettings.java
index 928ac07435d9..c2e853bccea0 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/OnlineEvaluatorServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/OnlineEvaluatorServiceStubSettings.java
@@ -80,6 +80,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -158,6 +159,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PersistentResourceServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PersistentResourceServiceStub.java
index 62b1b953a5e2..40bec170afbc 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PersistentResourceServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PersistentResourceServiceStub.java
@@ -48,6 +48,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PersistentResourceServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PersistentResourceServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PersistentResourceServiceStubSettings.java
index 2d7cf0423cc9..4535f11a49ec 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PersistentResourceServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PersistentResourceServiceStubSettings.java
@@ -78,6 +78,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PipelineServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PipelineServiceStub.java
index 07aa65c7a572..1e737405f413 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PipelineServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PipelineServiceStub.java
@@ -57,6 +57,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PipelineServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PipelineServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PipelineServiceStubSettings.java
index 39df2edcaa32..ac7dba925d23 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PipelineServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PipelineServiceStubSettings.java
@@ -87,6 +87,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -164,6 +165,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PredictionServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PredictionServiceStub.java
index 957d285460b2..e139f289cd59 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PredictionServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PredictionServiceStub.java
@@ -59,6 +59,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PredictionServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PredictionServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PredictionServiceStubSettings.java
index 1459bb0e7eb3..fa118bf9dd56 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PredictionServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/PredictionServiceStubSettings.java
@@ -87,6 +87,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -139,6 +140,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineExecutionServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineExecutionServiceStub.java
index fbae2c79d688..c26b3cc2fb55 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineExecutionServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineExecutionServiceStub.java
@@ -44,6 +44,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ReasoningEngineExecutionServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineExecutionServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineExecutionServiceStubSettings.java
index 8e3e7879f023..a20493caddfb 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineExecutionServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineExecutionServiceStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineRuntimeRevisionServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineRuntimeRevisionServiceStub.java
index 804381ad35bc..d96da0e5d5e4 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineRuntimeRevisionServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineRuntimeRevisionServiceStub.java
@@ -42,6 +42,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ReasoningEngineRuntimeRevisionServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineRuntimeRevisionServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineRuntimeRevisionServiceStubSettings.java
index d08e0bff53ab..6ee3fd0b27c0 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineRuntimeRevisionServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineRuntimeRevisionServiceStubSettings.java
@@ -72,6 +72,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineServiceStub.java
index cace3b5c61a5..57823f7b32e3 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineServiceStub.java
@@ -46,6 +46,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ReasoningEngineServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineServiceStubSettings.java
index 44c16c0d6ddb..9ca73fd2b9b7 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ReasoningEngineServiceStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ScheduleServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ScheduleServiceStub.java
index 342ca840b467..e4a1adb58849 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ScheduleServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ScheduleServiceStub.java
@@ -46,6 +46,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ScheduleServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ScheduleServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ScheduleServiceStubSettings.java
index 35a9988b11b3..d6e1000249a0 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ScheduleServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/ScheduleServiceStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/SessionServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/SessionServiceStub.java
index 97b18ec30e37..68ef43640159 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/SessionServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/SessionServiceStub.java
@@ -50,6 +50,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SessionServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/SessionServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/SessionServiceStubSettings.java
index a17ed9f7e680..01d226802c37 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/SessionServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/SessionServiceStubSettings.java
@@ -81,6 +81,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -158,6 +159,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/SpecialistPoolServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/SpecialistPoolServiceStub.java
index 125e55bc9b82..0e223ef7d2a7 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/SpecialistPoolServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/SpecialistPoolServiceStub.java
@@ -46,6 +46,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SpecialistPoolServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/SpecialistPoolServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/SpecialistPoolServiceStubSettings.java
index e9b80ad65f2c..cbeb7463875b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/SpecialistPoolServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/SpecialistPoolServiceStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/TensorboardServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/TensorboardServiceStub.java
index 8b0c376f82a7..56256d397c3d 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/TensorboardServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/TensorboardServiceStub.java
@@ -92,6 +92,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class TensorboardServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/TensorboardServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/TensorboardServiceStubSettings.java
index b9080bc532c4..8b4f6cb8868c 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/TensorboardServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/TensorboardServiceStubSettings.java
@@ -123,6 +123,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -201,6 +202,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VertexRagDataServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VertexRagDataServiceStub.java
index f13388af5b87..3d2560b6c96b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VertexRagDataServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VertexRagDataServiceStub.java
@@ -84,6 +84,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class VertexRagDataServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VertexRagDataServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VertexRagDataServiceStubSettings.java
index e144ab993fc6..fded7f56f04e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VertexRagDataServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VertexRagDataServiceStubSettings.java
@@ -114,6 +114,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -192,6 +193,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VertexRagServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VertexRagServiceStub.java
index 7dacb6731a25..f479854b901b 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VertexRagServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VertexRagServiceStub.java
@@ -45,6 +45,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class VertexRagServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VertexRagServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VertexRagServiceStubSettings.java
index 24438b41b02d..d7aef60d6cf8 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VertexRagServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VertexRagServiceStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VizierServiceStub.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VizierServiceStub.java
index d8682170a787..d1488ec9bce5 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VizierServiceStub.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VizierServiceStub.java
@@ -61,6 +61,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class VizierServiceStub implements BackgroundResource {
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VizierServiceStubSettings.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VizierServiceStubSettings.java
index 0e108d29a796..03876b59a98e 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VizierServiceStubSettings.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/stub/VizierServiceStubSettings.java
@@ -91,6 +91,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -168,6 +169,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/AnnotationSpecName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/AnnotationSpecName.java
index ac18b39bf7ab..1e2c846f8e47 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/AnnotationSpecName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/AnnotationSpecName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnnotationSpecName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET_ANNOTATION_SPEC =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ArtifactName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ArtifactName.java
index 21547734f52a..4ebfef503589 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ArtifactName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ArtifactName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ArtifactName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_METADATA_STORE_ARTIFACT =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/BatchPredictionJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/BatchPredictionJobName.java
index 0a2a14ad6060..4c8be2e579ea 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/BatchPredictionJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/BatchPredictionJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BatchPredictionJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BATCH_PREDICTION_JOB =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/CachedContentName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/CachedContentName.java
index 6f0aae08db5c..2b09fee8a036 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/CachedContentName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/CachedContentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CachedContentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CACHED_CONTENT =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ContextName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ContextName.java
index afa3404f5dfa..d9820e04e4a8 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ContextName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ContextName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContextName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_METADATA_STORE_CONTEXT =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/CustomJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/CustomJobName.java
index dbe5097f219d..8227f8bfafa6 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/CustomJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/CustomJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CUSTOM_JOB =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DataItemName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DataItemName.java
index 45a507cae995..37bd051ea828 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DataItemName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DataItemName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataItemName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET_DATA_ITEM =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DataLabelingJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DataLabelingJobName.java
index aff82aae42ae..95e53eb81e11 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DataLabelingJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DataLabelingJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataLabelingJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_LABELING_JOB =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DatasetName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DatasetName.java
index 6d7160b1f984..3f285943b0e4 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DatasetName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DatasetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatasetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DatasetVersionName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DatasetVersionName.java
index 35fea7f69aac..d657c4818f12 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DatasetVersionName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DatasetVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatasetVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET_DATASET_VERSION =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DeploymentResourcePoolName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DeploymentResourcePoolName.java
index 6af586534af8..d5b73c9568ca 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DeploymentResourcePoolName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/DeploymentResourcePoolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentResourcePoolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DEPLOYMENT_RESOURCE_POOL =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/EndpointName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/EndpointName.java
index 49be289ced34..59ba2296f4cb 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/EndpointName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/EndpointName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EndpointName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENDPOINT =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/EntityTypeName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/EntityTypeName.java
index 1e209543bc4d..c6d8f39e2cf4 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/EntityTypeName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/EntityTypeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntityTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEATURESTORE_ENTITY_TYPE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ExecutionName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ExecutionName.java
index 774ba6db6b49..356d1abad0db 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ExecutionName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ExecutionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExecutionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_METADATA_STORE_EXECUTION =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureGroupName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureGroupName.java
index 3a80628f2d10..f4e9a0c28781 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureGroupName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEATURE_GROUP =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureName.java
index eeea66d757d0..86bb85a94ce2 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEATURESTORE_ENTITY_TYPE_FEATURE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreName.java
index 5b4d83ea0b81..0a1105ad03ea 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureOnlineStoreName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureOnlineStoreName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEATURE_ONLINE_STORE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureViewName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureViewName.java
index f2f1f718e2c7..a179caf187d5 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureViewName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureViewName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureViewName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEATURE_ONLINE_STORE_FEATURE_VIEW =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureViewSyncName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureViewSyncName.java
index 26aba0780338..749403b7d0c4 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureViewSyncName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeatureViewSyncName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureViewSyncName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEATURE_ONLINE_STORE_FEATURE_VIEW =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreName.java
index 12bc8d20ecdb..c3110118c8ec 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/FeaturestoreName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeaturestoreName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEATURESTORE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/HyperparameterTuningJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/HyperparameterTuningJobName.java
index a3ab8e1fb2c2..5dea5cb60d49 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/HyperparameterTuningJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/HyperparameterTuningJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HyperparameterTuningJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_HYPERPARAMETER_TUNING_JOB =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/IndexEndpointName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/IndexEndpointName.java
index 121a6cb7935a..cda0d7a09f75 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/IndexEndpointName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/IndexEndpointName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IndexEndpointName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INDEX_ENDPOINT =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/IndexName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/IndexName.java
index 6b50061df655..508803589b69 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/IndexName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/IndexName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IndexName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INDEX =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/LocationName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/LocationName.java
index d72afe996e9c..abf3d1addd57 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/LocationName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/MetadataSchemaName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/MetadataSchemaName.java
index fe0ad0166c60..a72a7921409d 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/MetadataSchemaName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/MetadataSchemaName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetadataSchemaName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_METADATA_STORE_METADATA_SCHEMA =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/MetadataStoreName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/MetadataStoreName.java
index cdd7c48d63a9..4dccf9b82b26 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/MetadataStoreName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/MetadataStoreName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetadataStoreName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_METADATA_STORE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelDeploymentMonitoringJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelDeploymentMonitoringJobName.java
index f078a7da15c4..54cb4f882467 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelDeploymentMonitoringJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelDeploymentMonitoringJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelDeploymentMonitoringJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MODEL_DEPLOYMENT_MONITORING_JOB =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelEvaluationName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelEvaluationName.java
index 5cb5d0c5f97f..9131b114c4cd 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelEvaluationName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelEvaluationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelEvaluationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MODEL_EVALUATION =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelEvaluationSliceName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelEvaluationSliceName.java
index c7fda35c8e8a..d61a7d5f8afd 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelEvaluationSliceName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelEvaluationSliceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelEvaluationSliceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MODEL_EVALUATION_SLICE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelName.java
index d0b77d3e509b..5642e5f90dd4 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MODEL =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NasJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NasJobName.java
index 84f30b4e8b9a..67eb5ad51dd1 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NasJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NasJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NasJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NAS_JOB =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NasTrialDetailName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NasTrialDetailName.java
index e8aa3bfd60d3..cf2f9aca5846 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NasTrialDetailName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NasTrialDetailName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NasTrialDetailName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NAS_JOB_NAS_TRIAL_DETAIL =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NotebookExecutionJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NotebookExecutionJobName.java
index b244e5eee858..5e700e081922 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NotebookExecutionJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NotebookExecutionJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotebookExecutionJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NOTEBOOK_EXECUTION_JOB =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NotebookRuntimeName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NotebookRuntimeName.java
index 041007fe6f53..cb618f386b90 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NotebookRuntimeName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NotebookRuntimeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotebookRuntimeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NOTEBOOK_RUNTIME =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NotebookRuntimeTemplateName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NotebookRuntimeTemplateName.java
index c34c6336b0cb..838346218ad1 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NotebookRuntimeTemplateName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/NotebookRuntimeTemplateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotebookRuntimeTemplateName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NOTEBOOK_RUNTIME_TEMPLATE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/PersistentResourceName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/PersistentResourceName.java
index 30e2c4fce0ad..a164f0a9a5e0 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/PersistentResourceName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/PersistentResourceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PersistentResourceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PERSISTENT_RESOURCE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/PipelineJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/PipelineJobName.java
index 5f646ee6b83c..cdc753c9fd53 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/PipelineJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/PipelineJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PipelineJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PIPELINE_JOB =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ProjectName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ProjectName.java
index 17f43caf9cd9..f48fecf0021f 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ProjectName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/PublisherModelName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/PublisherModelName.java
index 616a75a08239..0e27c4f4a994 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/PublisherModelName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/PublisherModelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PublisherModelName implements ResourceName {
   private static final PathTemplate PUBLISHER_MODEL =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/RagCorpusName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/RagCorpusName.java
index 42862d07680b..3b0519fb315a 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/RagCorpusName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/RagCorpusName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RagCorpusName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RAG_CORPUS =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/RagEngineConfigName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/RagEngineConfigName.java
index 3d0d7f44db6e..4e8ed03a06db 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/RagEngineConfigName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/RagEngineConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RagEngineConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/RagFileName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/RagFileName.java
index 3c88d809cd3e..f08c3faf165d 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/RagFileName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/RagFileName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RagFileName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RAG_CORPUS_RAG_FILE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineName.java
index c37843dabd1e..4395b96ce045 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ReasoningEngineName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReasoningEngineName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REASONING_ENGINE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/SavedQueryName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/SavedQueryName.java
index 4fe178a6d9a7..f5ec853eeca1 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/SavedQueryName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/SavedQueryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SavedQueryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET_SAVED_QUERY =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ScheduleName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ScheduleName.java
index 3d63365f6ec6..55e8b3259eeb 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ScheduleName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ScheduleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ScheduleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SCHEDULE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/SessionName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/SessionName.java
index e7fa46a8c2f2..c56dabf5c1ec 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/SessionName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/SessionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REASONING_ENGINE_SESSION =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/SpecialistPoolName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/SpecialistPoolName.java
index 9b6cab8a9806..8a9154cf1cd2 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/SpecialistPoolName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/SpecialistPoolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpecialistPoolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SPECIALIST_POOL =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/StudyName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/StudyName.java
index ef374ad4d149..7e19441cc772 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/StudyName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/StudyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StudyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_STUDY =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TensorboardExperimentName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TensorboardExperimentName.java
index 06edf5f5a7a5..1630ec160f17 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TensorboardExperimentName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TensorboardExperimentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TensorboardExperimentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TENSORBOARD_EXPERIMENT =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TensorboardName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TensorboardName.java
index 047090b53115..a7daf523d91c 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TensorboardName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TensorboardName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TensorboardName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TENSORBOARD =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TensorboardRunName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TensorboardRunName.java
index 55abdd0376d3..b35801720217 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TensorboardRunName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TensorboardRunName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TensorboardRunName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TENSORBOARD_EXPERIMENT_RUN =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TensorboardTimeSeriesName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TensorboardTimeSeriesName.java
index 87689b3ba6b2..8d25d250ad3a 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TensorboardTimeSeriesName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TensorboardTimeSeriesName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TensorboardTimeSeriesName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TENSORBOARD_EXPERIMENT_RUN_TIME_SERIES =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TrainingPipelineName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TrainingPipelineName.java
index 7eb73783b6a7..5316e48d1091 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TrainingPipelineName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TrainingPipelineName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TrainingPipelineName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TRAINING_PIPELINE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TrialName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TrialName.java
index 4b1b71ce91b1..eca879524eff 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TrialName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TrialName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TrialName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_STUDY_TRIAL =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TuningJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TuningJobName.java
index 961cec6ce037..00c9029e5354 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TuningJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/TuningJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TuningJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TUNING_JOB =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/AnnotationSpecName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/AnnotationSpecName.java
index c7066cf62409..7d98b71978f6 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/AnnotationSpecName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/AnnotationSpecName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnnotationSpecName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET_ANNOTATION_SPEC =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ArtifactName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ArtifactName.java
index e6836c7f1bbb..124f57233b27 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ArtifactName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ArtifactName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ArtifactName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_METADATA_STORE_ARTIFACT =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/BatchPredictionJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/BatchPredictionJobName.java
index 23e5b3389bf4..87ab945d8f27 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/BatchPredictionJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/BatchPredictionJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BatchPredictionJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BATCH_PREDICTION_JOB =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/CachedContentName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/CachedContentName.java
index 3452488791fa..3edd52ce045d 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/CachedContentName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/CachedContentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CachedContentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CACHED_CONTENT =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ContextName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ContextName.java
index f3812d9a4e53..525637ead65a 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ContextName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ContextName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContextName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_METADATA_STORE_CONTEXT =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/CustomJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/CustomJobName.java
index c5e18b15bb48..419d60f0c98a 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/CustomJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/CustomJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CUSTOM_JOB =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DataItemName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DataItemName.java
index b5dc248ff504..08e64db585dd 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DataItemName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DataItemName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataItemName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET_DATA_ITEM =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DataLabelingJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DataLabelingJobName.java
index 4dc26128f6ec..dbf77cc7b466 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DataLabelingJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DataLabelingJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataLabelingJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_LABELING_JOB =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DatasetName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DatasetName.java
index 02a592d77cc7..cd47bbc9be77 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DatasetName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DatasetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatasetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DatasetVersionName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DatasetVersionName.java
index 3ade1d8acbaa..34f1f16ed05c 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DatasetVersionName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DatasetVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatasetVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET_DATASET_VERSION =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DeploymentResourcePoolName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DeploymentResourcePoolName.java
index 8a0023884cdc..b8ecbf0a0e41 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DeploymentResourcePoolName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/DeploymentResourcePoolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentResourcePoolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DEPLOYMENT_RESOURCE_POOL =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/EndpointName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/EndpointName.java
index aa2f429a3ae9..47e87c067ab0 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/EndpointName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/EndpointName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EndpointName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENDPOINT =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/EntityTypeName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/EntityTypeName.java
index 22c90044312a..0ce03e332628 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/EntityTypeName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/EntityTypeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntityTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEATURESTORE_ENTITY_TYPE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ExampleStoreName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ExampleStoreName.java
index 0fafece0ac2a..c1430c0f8fea 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ExampleStoreName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ExampleStoreName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExampleStoreName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_EXAMPLE_STORE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ExecutionName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ExecutionName.java
index a9a3c3fca87c..e26902d46273 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ExecutionName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ExecutionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExecutionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_METADATA_STORE_EXECUTION =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionName.java
index 900c87758225..6d4693938379 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ExtensionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExtensionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_EXTENSION =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureGroupName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureGroupName.java
index e8064e69bc77..2864f6c3afe2 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureGroupName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEATURE_GROUP =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureMonitorJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureMonitorJobName.java
index b636034a6299..79ec5fad4bcc 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureMonitorJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureMonitorJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureMonitorJobName implements ResourceName {
   private static final PathTemplate
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureMonitorName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureMonitorName.java
index 35f61aeeb42d..69bbf2a892eb 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureMonitorName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureMonitorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureMonitorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEATURE_GROUP_FEATURE_MONITOR =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureName.java
index e70de530dcff..038a395a6f70 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEATURESTORE_ENTITY_TYPE_FEATURE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreName.java
index cb71de5bb2eb..21c7d7a46337 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureOnlineStoreName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureOnlineStoreName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEATURE_ONLINE_STORE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureViewName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureViewName.java
index 6d38974c5751..136c76c76150 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureViewName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureViewName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureViewName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEATURE_ONLINE_STORE_FEATURE_VIEW =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureViewSyncName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureViewSyncName.java
index 8de321ead590..5e63a0e8118e 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureViewSyncName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeatureViewSyncName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureViewSyncName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEATURE_ONLINE_STORE_FEATURE_VIEW =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreName.java
index 206c0df0a386..59ac3719a49d 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/FeaturestoreName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeaturestoreName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEATURESTORE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/HyperparameterTuningJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/HyperparameterTuningJobName.java
index 09a4fe9178e4..0341cf44a241 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/HyperparameterTuningJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/HyperparameterTuningJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HyperparameterTuningJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_HYPERPARAMETER_TUNING_JOB =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexEndpointName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexEndpointName.java
index 0342ed8e8fe5..c043d975449d 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexEndpointName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexEndpointName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IndexEndpointName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INDEX_ENDPOINT =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexName.java
index 60507fae96e8..3541bfbafdf4 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/IndexName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IndexName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INDEX =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/LocationName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/LocationName.java
index 871ec0fd7191..c35c15a6b248 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/LocationName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/MemoryName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/MemoryName.java
index a85abde7cd8d..1f0a4f95eb61 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/MemoryName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/MemoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MemoryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REASONING_ENGINE_MEMORY =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/MetadataSchemaName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/MetadataSchemaName.java
index 72aaa2549ea2..5fa216fba530 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/MetadataSchemaName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/MetadataSchemaName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetadataSchemaName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_METADATA_STORE_METADATA_SCHEMA =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/MetadataStoreName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/MetadataStoreName.java
index 656673ff97d0..4bce0d98b45e 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/MetadataStoreName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/MetadataStoreName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetadataStoreName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_METADATA_STORE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelDeploymentMonitoringJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelDeploymentMonitoringJobName.java
index 893d2374958e..c9282f52048e 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelDeploymentMonitoringJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelDeploymentMonitoringJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelDeploymentMonitoringJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MODEL_DEPLOYMENT_MONITORING_JOB =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelEvaluationName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelEvaluationName.java
index 38bfbe364ec0..6a5741c67871 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelEvaluationName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelEvaluationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelEvaluationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MODEL_EVALUATION =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelEvaluationSliceName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelEvaluationSliceName.java
index 377ee20b5219..e11b62a40c87 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelEvaluationSliceName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelEvaluationSliceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelEvaluationSliceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MODEL_EVALUATION_SLICE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelMonitorName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelMonitorName.java
index e47945d3ae26..e73b20b079d7 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelMonitorName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelMonitorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelMonitorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MODEL_MONITOR =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelMonitoringJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelMonitoringJobName.java
index 6e003ebbb805..aecc1dbcb3e6 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelMonitoringJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelMonitoringJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelMonitoringJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MODEL_MONITOR_MODEL_MONITORING_JOB =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelName.java
index bc4d749ed39a..c3df716c321a 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MODEL =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NasJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NasJobName.java
index 4be079fbc3ec..a5f112f94db5 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NasJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NasJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NasJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NAS_JOB =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NasTrialDetailName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NasTrialDetailName.java
index 73ca6fb95c5a..5a3091676468 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NasTrialDetailName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NasTrialDetailName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NasTrialDetailName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NAS_JOB_NAS_TRIAL_DETAIL =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookExecutionJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookExecutionJobName.java
index fd0a5252f140..c62cd4b27627 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookExecutionJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookExecutionJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotebookExecutionJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NOTEBOOK_EXECUTION_JOB =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookRuntimeName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookRuntimeName.java
index 3e3281c8b38d..103f8cf6fea0 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookRuntimeName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookRuntimeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotebookRuntimeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NOTEBOOK_RUNTIME =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookRuntimeTemplateName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookRuntimeTemplateName.java
index a7d150372cae..301fc5b2d739 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookRuntimeTemplateName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/NotebookRuntimeTemplateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotebookRuntimeTemplateName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NOTEBOOK_RUNTIME_TEMPLATE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/OnlineEvaluatorName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/OnlineEvaluatorName.java
index 9d9bd02400ae..c7c1460e9b8d 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/OnlineEvaluatorName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/OnlineEvaluatorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OnlineEvaluatorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ONLINE_EVALUATOR =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/PersistentResourceName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/PersistentResourceName.java
index 62a57bb4b2e0..a4dc08f51d78 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/PersistentResourceName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/PersistentResourceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PersistentResourceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PERSISTENT_RESOURCE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/PipelineJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/PipelineJobName.java
index 24bfadf7cfe1..0bf8093056d7 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/PipelineJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/PipelineJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PipelineJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PIPELINE_JOB =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ProjectName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ProjectName.java
index 3fb5e9112658..ce4c6605025e 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ProjectName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/PublisherModelName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/PublisherModelName.java
index f540d6bb73ef..1e6c40f222d4 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/PublisherModelName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/PublisherModelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PublisherModelName implements ResourceName {
   private static final PathTemplate PUBLISHER_MODEL =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagCorpusName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagCorpusName.java
index 0971cb8cc01b..f55f17b06b3a 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagCorpusName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagCorpusName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RagCorpusName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RAG_CORPUS =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagDataSchemaName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagDataSchemaName.java
index 6575a61e3391..929833477da9 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagDataSchemaName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagDataSchemaName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RagDataSchemaName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RAG_CORPUS_RAG_DATA_SCHEMA =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagEngineConfigName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagEngineConfigName.java
index 4d2388bda05e..04f8755b81af 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagEngineConfigName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagEngineConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RagEngineConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagFileName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagFileName.java
index 540f26814fbf..a1c806629b59 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagFileName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagFileName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RagFileName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RAG_CORPUS_RAG_FILE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagMetadataName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagMetadataName.java
index b139ba6252cf..eb000ea2cace 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagMetadataName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/RagMetadataName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RagMetadataName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RAG_CORPUS_RAG_FILE_RAG_METADATA =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineName.java
index 5b25b087d81d..9bf41c221ba9 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReasoningEngineName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REASONING_ENGINE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineRuntimeRevisionName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineRuntimeRevisionName.java
index ce3ad7e2773a..8e7e93702811 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineRuntimeRevisionName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ReasoningEngineRuntimeRevisionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReasoningEngineRuntimeRevisionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REASONING_ENGINE_RUNTIME_REVISION =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/SavedQueryName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/SavedQueryName.java
index 9b73784da100..390a06f766f7 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/SavedQueryName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/SavedQueryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SavedQueryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET_SAVED_QUERY =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ScheduleName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ScheduleName.java
index 6167c27f7222..286bb9306b46 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ScheduleName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ScheduleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ScheduleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SCHEDULE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/SessionName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/SessionName.java
index 1139890f87cf..bf1494be7f0d 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/SessionName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/SessionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REASONING_ENGINE_SESSION =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/SpecialistPoolName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/SpecialistPoolName.java
index 504b64a54c6d..2e8af0adc6f9 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/SpecialistPoolName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/SpecialistPoolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpecialistPoolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SPECIALIST_POOL =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/StudyName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/StudyName.java
index bacb20b0a1bc..de4bc04772ce 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/StudyName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/StudyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StudyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_STUDY =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardExperimentName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardExperimentName.java
index 1724151b9697..41fb06323df6 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardExperimentName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardExperimentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TensorboardExperimentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TENSORBOARD_EXPERIMENT =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardName.java
index 541da573474b..9c0e170b9d12 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TensorboardName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TENSORBOARD =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardRunName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardRunName.java
index c2543554baba..732ad1f5f802 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardRunName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardRunName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TensorboardRunName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TENSORBOARD_EXPERIMENT_RUN =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardTimeSeriesName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardTimeSeriesName.java
index 3e9051b8e6d9..cc6dc050b347 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardTimeSeriesName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TensorboardTimeSeriesName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TensorboardTimeSeriesName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TENSORBOARD_EXPERIMENT_RUN_TIME_SERIES =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TrainingPipelineName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TrainingPipelineName.java
index b0d2f2870614..7b227e01ae16 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TrainingPipelineName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TrainingPipelineName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TrainingPipelineName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TRAINING_PIPELINE =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TrialName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TrialName.java
index 61e3523f5c35..95caa61ed00a 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TrialName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TrialName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TrialName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_STUDY_TRIAL =
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TuningJobName.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TuningJobName.java
index 467dbc3703c8..2ee59cbec487 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TuningJobName.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/TuningJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TuningJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TUNING_JOB =
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/AlloyDBAdminClient.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/AlloyDBAdminClient.java
index 879e43a76ebe..bd969c6aa2b5 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/AlloyDBAdminClient.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/AlloyDBAdminClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -871,6 +872,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AlloyDBAdminClient implements BackgroundResource {
   private final AlloyDBAdminSettings settings;
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/AlloyDBAdminSettings.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/AlloyDBAdminSettings.java
index 6ab1d70005be..2ff8c2a77760 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/AlloyDBAdminSettings.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/AlloyDBAdminSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AlloyDBAdminSettings extends ClientSettings<AlloyDBAdminSettings> {
 
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/AlloyDBCSQLAdminClient.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/AlloyDBCSQLAdminClient.java
index 9bcf15b3ac99..e0206245c71f 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/AlloyDBCSQLAdminClient.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/AlloyDBCSQLAdminClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -178,6 +179,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AlloyDBCSQLAdminClient implements BackgroundResource {
   private final AlloyDBCSQLAdminSettings settings;
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/AlloyDBCSQLAdminSettings.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/AlloyDBCSQLAdminSettings.java
index 29230bd9cb39..ce2093e829ca 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/AlloyDBCSQLAdminSettings.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/AlloyDBCSQLAdminSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AlloyDBCSQLAdminSettings extends ClientSettings<AlloyDBCSQLAdminSettings> {
 
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/AlloyDBAdminStub.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/AlloyDBAdminStub.java
index d0c58ae21372..bd86eb5359ac 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/AlloyDBAdminStub.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/AlloyDBAdminStub.java
@@ -90,6 +90,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AlloyDBAdminStub implements BackgroundResource {
 
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/AlloyDBAdminStubSettings.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/AlloyDBAdminStubSettings.java
index 4357cf0d97f1..ebd1bafee781 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/AlloyDBAdminStubSettings.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/AlloyDBAdminStubSettings.java
@@ -126,6 +126,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -203,6 +204,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AlloyDBAdminStubSettings extends StubSettings<AlloyDBAdminStubSettings> {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/AlloyDBCSQLAdminStub.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/AlloyDBCSQLAdminStub.java
index bf51be5b32f2..b2b52e707ef8 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/AlloyDBCSQLAdminStub.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/AlloyDBCSQLAdminStub.java
@@ -31,6 +31,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AlloyDBCSQLAdminStub implements BackgroundResource {
 
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/AlloyDBCSQLAdminStubSettings.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/AlloyDBCSQLAdminStubSettings.java
index 0b7958782b93..79036c196c38 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/AlloyDBCSQLAdminStubSettings.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/AlloyDBCSQLAdminStubSettings.java
@@ -65,6 +65,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -142,6 +143,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AlloyDBCSQLAdminStubSettings extends StubSettings<AlloyDBCSQLAdminStubSettings> {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/GrpcAlloyDBAdminCallableFactory.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/GrpcAlloyDBAdminCallableFactory.java
index a8826646c3bf..939e84353571 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/GrpcAlloyDBAdminCallableFactory.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/GrpcAlloyDBAdminCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAlloyDBAdminCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/GrpcAlloyDBAdminStub.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/GrpcAlloyDBAdminStub.java
index 05fd3e85a626..70c3c6087c8a 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/GrpcAlloyDBAdminStub.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/GrpcAlloyDBAdminStub.java
@@ -99,6 +99,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -106,6 +107,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAlloyDBAdminStub extends AlloyDBAdminStub {
   private static final MethodDescriptor<ListClustersRequest, ListClustersResponse>
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/GrpcAlloyDBCSQLAdminCallableFactory.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/GrpcAlloyDBCSQLAdminCallableFactory.java
index ec157f85224b..b6e17db861d2 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/GrpcAlloyDBCSQLAdminCallableFactory.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/GrpcAlloyDBCSQLAdminCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAlloyDBCSQLAdminCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/GrpcAlloyDBCSQLAdminStub.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/GrpcAlloyDBCSQLAdminStub.java
index 6df13e00489d..fafadf33a4ee 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/GrpcAlloyDBCSQLAdminStub.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/GrpcAlloyDBCSQLAdminStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAlloyDBCSQLAdminStub extends AlloyDBCSQLAdminStub {
   private static final MethodDescriptor<RestoreFromCloudSQLRequest, Operation>
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/HttpJsonAlloyDBAdminCallableFactory.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/HttpJsonAlloyDBAdminCallableFactory.java
index bb821c0af249..3a84d9c011f3 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/HttpJsonAlloyDBAdminCallableFactory.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/HttpJsonAlloyDBAdminCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAlloyDBAdminCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/HttpJsonAlloyDBAdminStub.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/HttpJsonAlloyDBAdminStub.java
index 3de0e06bbb38..d7f8ac597938 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/HttpJsonAlloyDBAdminStub.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/HttpJsonAlloyDBAdminStub.java
@@ -110,6 +110,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAlloyDBAdminStub extends AlloyDBAdminStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/HttpJsonAlloyDBCSQLAdminCallableFactory.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/HttpJsonAlloyDBCSQLAdminCallableFactory.java
index b2174355c3e1..e1c6fd1d6a66 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/HttpJsonAlloyDBCSQLAdminCallableFactory.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/HttpJsonAlloyDBCSQLAdminCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAlloyDBCSQLAdminCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/HttpJsonAlloyDBCSQLAdminStub.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/HttpJsonAlloyDBCSQLAdminStub.java
index b29f99bd57a1..8e950e592bd9 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/HttpJsonAlloyDBCSQLAdminStub.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1/stub/HttpJsonAlloyDBCSQLAdminStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAlloyDBCSQLAdminStub extends AlloyDBCSQLAdminStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/AlloyDBAdminClient.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/AlloyDBAdminClient.java
index a9880d8b1a2d..8594baa5e47b 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/AlloyDBAdminClient.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/AlloyDBAdminClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -890,6 +891,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AlloyDBAdminClient implements BackgroundResource {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/AlloyDBAdminSettings.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/AlloyDBAdminSettings.java
index 23b985cd83c7..478d23cf28fe 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/AlloyDBAdminSettings.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/AlloyDBAdminSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AlloyDBAdminSettings extends ClientSettings<AlloyDBAdminSettings> {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/AlloyDBCSQLAdminClient.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/AlloyDBCSQLAdminClient.java
index ab185bd25a95..1ab32fa2c37b 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/AlloyDBCSQLAdminClient.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/AlloyDBCSQLAdminClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -178,6 +179,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AlloyDBCSQLAdminClient implements BackgroundResource {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/AlloyDBCSQLAdminSettings.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/AlloyDBCSQLAdminSettings.java
index cd15ab08d1f5..bd1fa23fd75a 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/AlloyDBCSQLAdminSettings.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/AlloyDBCSQLAdminSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AlloyDBCSQLAdminSettings extends ClientSettings<AlloyDBCSQLAdminSettings> {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/AlloyDBAdminStub.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/AlloyDBAdminStub.java
index 4b60dc0fd648..8b702a6d4bf6 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/AlloyDBAdminStub.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/AlloyDBAdminStub.java
@@ -93,6 +93,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AlloyDBAdminStub implements BackgroundResource {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/AlloyDBAdminStubSettings.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/AlloyDBAdminStubSettings.java
index a302d0a771f0..31464de60baa 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/AlloyDBAdminStubSettings.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/AlloyDBAdminStubSettings.java
@@ -127,6 +127,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -204,6 +205,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/AlloyDBCSQLAdminStub.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/AlloyDBCSQLAdminStub.java
index 9209353dbdc8..fc2c75777354 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/AlloyDBCSQLAdminStub.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/AlloyDBCSQLAdminStub.java
@@ -32,6 +32,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AlloyDBCSQLAdminStub implements BackgroundResource {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/AlloyDBCSQLAdminStubSettings.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/AlloyDBCSQLAdminStubSettings.java
index 537e782e15b6..1f6fe1159e56 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/AlloyDBCSQLAdminStubSettings.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/AlloyDBCSQLAdminStubSettings.java
@@ -65,6 +65,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -142,6 +143,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/GrpcAlloyDBAdminCallableFactory.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/GrpcAlloyDBAdminCallableFactory.java
index de7d74a77ce6..14c0cc486ba5 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/GrpcAlloyDBAdminCallableFactory.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/GrpcAlloyDBAdminCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAlloyDBAdminCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/GrpcAlloyDBAdminStub.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/GrpcAlloyDBAdminStub.java
index 3db1ced3994f..cdb791af9107 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/GrpcAlloyDBAdminStub.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/GrpcAlloyDBAdminStub.java
@@ -102,6 +102,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAlloyDBAdminStub extends AlloyDBAdminStub {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/GrpcAlloyDBCSQLAdminCallableFactory.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/GrpcAlloyDBCSQLAdminCallableFactory.java
index 366900f30a25..12743d02d336 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/GrpcAlloyDBCSQLAdminCallableFactory.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/GrpcAlloyDBCSQLAdminCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAlloyDBCSQLAdminCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/GrpcAlloyDBCSQLAdminStub.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/GrpcAlloyDBCSQLAdminStub.java
index 93930eb0383c..d1bc69baf168 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/GrpcAlloyDBCSQLAdminStub.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/GrpcAlloyDBCSQLAdminStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAlloyDBCSQLAdminStub extends AlloyDBCSQLAdminStub {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/HttpJsonAlloyDBAdminCallableFactory.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/HttpJsonAlloyDBAdminCallableFactory.java
index eb41bc204b65..e9605872cb7e 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/HttpJsonAlloyDBAdminCallableFactory.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/HttpJsonAlloyDBAdminCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAlloyDBAdminCallableFactory
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/HttpJsonAlloyDBAdminStub.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/HttpJsonAlloyDBAdminStub.java
index 9e0d2cfe2f80..bc4e9e980629 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/HttpJsonAlloyDBAdminStub.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/HttpJsonAlloyDBAdminStub.java
@@ -113,6 +113,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAlloyDBAdminStub extends AlloyDBAdminStub {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/HttpJsonAlloyDBCSQLAdminCallableFactory.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/HttpJsonAlloyDBCSQLAdminCallableFactory.java
index 6b079f0f67f8..a36ae56ba39d 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/HttpJsonAlloyDBCSQLAdminCallableFactory.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/HttpJsonAlloyDBCSQLAdminCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAlloyDBCSQLAdminCallableFactory
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/HttpJsonAlloyDBCSQLAdminStub.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/HttpJsonAlloyDBCSQLAdminStub.java
index 096fdbba3454..e5ce30dafb9c 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/HttpJsonAlloyDBCSQLAdminStub.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1alpha/stub/HttpJsonAlloyDBCSQLAdminStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAlloyDBCSQLAdminStub extends AlloyDBCSQLAdminStub {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/AlloyDBAdminClient.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/AlloyDBAdminClient.java
index 7036408e65ac..0ec7e338a49d 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/AlloyDBAdminClient.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/AlloyDBAdminClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -890,6 +891,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AlloyDBAdminClient implements BackgroundResource {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/AlloyDBAdminSettings.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/AlloyDBAdminSettings.java
index 71271172bb7c..b612945731c9 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/AlloyDBAdminSettings.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/AlloyDBAdminSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AlloyDBAdminSettings extends ClientSettings<AlloyDBAdminSettings> {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/AlloyDBCSQLAdminClient.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/AlloyDBCSQLAdminClient.java
index 1d45f6cb0865..df8be7823efe 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/AlloyDBCSQLAdminClient.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/AlloyDBCSQLAdminClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -178,6 +179,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AlloyDBCSQLAdminClient implements BackgroundResource {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/AlloyDBCSQLAdminSettings.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/AlloyDBCSQLAdminSettings.java
index 668a6e386f26..9372027ac32b 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/AlloyDBCSQLAdminSettings.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/AlloyDBCSQLAdminSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AlloyDBCSQLAdminSettings extends ClientSettings<AlloyDBCSQLAdminSettings> {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/AlloyDBAdminStub.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/AlloyDBAdminStub.java
index d603685311e7..8d9abaa796cf 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/AlloyDBAdminStub.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/AlloyDBAdminStub.java
@@ -93,6 +93,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AlloyDBAdminStub implements BackgroundResource {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/AlloyDBAdminStubSettings.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/AlloyDBAdminStubSettings.java
index 6b9aee1e4094..d42e71ca3f47 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/AlloyDBAdminStubSettings.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/AlloyDBAdminStubSettings.java
@@ -127,6 +127,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -204,6 +205,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/AlloyDBCSQLAdminStub.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/AlloyDBCSQLAdminStub.java
index b6d528d295ea..6be04d4e0fa1 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/AlloyDBCSQLAdminStub.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/AlloyDBCSQLAdminStub.java
@@ -32,6 +32,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AlloyDBCSQLAdminStub implements BackgroundResource {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/AlloyDBCSQLAdminStubSettings.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/AlloyDBCSQLAdminStubSettings.java
index 60633d9f8237..4740155492a0 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/AlloyDBCSQLAdminStubSettings.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/AlloyDBCSQLAdminStubSettings.java
@@ -65,6 +65,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -142,6 +143,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/GrpcAlloyDBAdminCallableFactory.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/GrpcAlloyDBAdminCallableFactory.java
index 7be58c1ef0b4..cb5e1e1342e5 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/GrpcAlloyDBAdminCallableFactory.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/GrpcAlloyDBAdminCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAlloyDBAdminCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/GrpcAlloyDBAdminStub.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/GrpcAlloyDBAdminStub.java
index 5d59fe7cff4d..d0ffcf215293 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/GrpcAlloyDBAdminStub.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/GrpcAlloyDBAdminStub.java
@@ -102,6 +102,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAlloyDBAdminStub extends AlloyDBAdminStub {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/GrpcAlloyDBCSQLAdminCallableFactory.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/GrpcAlloyDBCSQLAdminCallableFactory.java
index 60d634ec96f7..125bcd6f86ed 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/GrpcAlloyDBCSQLAdminCallableFactory.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/GrpcAlloyDBCSQLAdminCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAlloyDBCSQLAdminCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/GrpcAlloyDBCSQLAdminStub.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/GrpcAlloyDBCSQLAdminStub.java
index 07cf7f0df7f6..3344f59d3df9 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/GrpcAlloyDBCSQLAdminStub.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/GrpcAlloyDBCSQLAdminStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAlloyDBCSQLAdminStub extends AlloyDBCSQLAdminStub {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/HttpJsonAlloyDBAdminCallableFactory.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/HttpJsonAlloyDBAdminCallableFactory.java
index 56adf843ce5f..aa3ff62a4cf9 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/HttpJsonAlloyDBAdminCallableFactory.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/HttpJsonAlloyDBAdminCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAlloyDBAdminCallableFactory
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/HttpJsonAlloyDBAdminStub.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/HttpJsonAlloyDBAdminStub.java
index 8cac30238422..4158931fab86 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/HttpJsonAlloyDBAdminStub.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/HttpJsonAlloyDBAdminStub.java
@@ -113,6 +113,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAlloyDBAdminStub extends AlloyDBAdminStub {
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/HttpJsonAlloyDBCSQLAdminCallableFactory.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/HttpJsonAlloyDBCSQLAdminCallableFactory.java
index 25f920bfbd45..9e0ef633cf79 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/HttpJsonAlloyDBCSQLAdminCallableFactory.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/HttpJsonAlloyDBCSQLAdminCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAlloyDBCSQLAdminCallableFactory
diff --git a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/HttpJsonAlloyDBCSQLAdminStub.java b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/HttpJsonAlloyDBCSQLAdminStub.java
index ff921629e3d7..84add1fa42ec 100644
--- a/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/HttpJsonAlloyDBCSQLAdminStub.java
+++ b/java-alloydb/google-cloud-alloydb/src/main/java/com/google/cloud/alloydb/v1beta/stub/HttpJsonAlloyDBCSQLAdminStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAlloyDBCSQLAdminStub extends AlloyDBCSQLAdminStub {
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/BackupName.java b/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/BackupName.java
index a701caf9a664..526a10568f2f 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/BackupName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/BackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/ClusterName.java b/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/ClusterName.java
index 5711595c83e6..edc105caa3d1 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/ClusterName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/ClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/DatabaseName.java b/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/DatabaseName.java
index 40317bbb1c61..24518bb01af1 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/DatabaseName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/DatabaseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatabaseName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER_DATABASE =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/InstanceName.java b/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/InstanceName.java
index 624856fbf86e..d913b170ea23 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/InstanceName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER_INSTANCE =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/LocationName.java b/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/LocationName.java
index bee6fa4fb9e9..15a30d81b726 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/LocationName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/SupportedDatabaseFlagName.java b/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/SupportedDatabaseFlagName.java
index c9c8c860be01..b9069889a20b 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/SupportedDatabaseFlagName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/SupportedDatabaseFlagName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SupportedDatabaseFlagName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FLAG =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/UserName.java b/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/UserName.java
index 86e86367ef95..9166e645b77f 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/UserName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1/src/main/java/com/google/cloud/alloydb/v1/UserName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER_USER =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/BackupName.java b/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/BackupName.java
index abe9868be49c..0ec2f20fce5a 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/BackupName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/BackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/ClusterName.java b/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/ClusterName.java
index fda14937ba51..72f3d2a05c16 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/ClusterName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/ClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/DatabaseName.java b/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/DatabaseName.java
index bd4aa6150580..ce385a9b8f1f 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/DatabaseName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/DatabaseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatabaseName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER_DATABASE =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/InstanceName.java b/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/InstanceName.java
index 7eb317fcbc15..b2fe1f79908a 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/InstanceName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER_INSTANCE =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/LocationName.java b/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/LocationName.java
index 4526164bab4a..48a07c67678b 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/LocationName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/SupportedDatabaseFlagName.java b/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/SupportedDatabaseFlagName.java
index 9b0cc431da58..64ba7b70548a 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/SupportedDatabaseFlagName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/SupportedDatabaseFlagName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SupportedDatabaseFlagName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FLAG =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/UserName.java b/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/UserName.java
index 27333221f232..d1188f3cf768 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/UserName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1alpha/src/main/java/com/google/cloud/alloydb/v1alpha/UserName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER_USER =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/BackupName.java b/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/BackupName.java
index 460db16faf51..922781aefb56 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/BackupName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/BackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/ClusterName.java b/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/ClusterName.java
index 734679562a81..1e4d44ff5f70 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/ClusterName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/ClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/DatabaseName.java b/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/DatabaseName.java
index 575ddfd7b504..e0c6d102c4c0 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/DatabaseName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/DatabaseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatabaseName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER_DATABASE =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/InstanceName.java b/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/InstanceName.java
index 8b4f9b6d4ef8..1ac3036a7f50 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/InstanceName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER_INSTANCE =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/LocationName.java b/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/LocationName.java
index 4cc55bfcc811..7786a4ea9e5d 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/LocationName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/SupportedDatabaseFlagName.java b/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/SupportedDatabaseFlagName.java
index aafa3091914c..067704aec66a 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/SupportedDatabaseFlagName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/SupportedDatabaseFlagName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SupportedDatabaseFlagName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FLAG =
diff --git a/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/UserName.java b/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/UserName.java
index 54827bb3bc50..1f222404f5cf 100644
--- a/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/UserName.java
+++ b/java-alloydb/proto-google-cloud-alloydb-v1beta/src/main/java/com/google/cloud/alloydb/v1beta/UserName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER_USER =
diff --git a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/AnalyticsAdminServiceClient.java b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/AnalyticsAdminServiceClient.java
index 56c2bd1f6210..ffe3b028704a 100644
--- a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/AnalyticsAdminServiceClient.java
+++ b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/AnalyticsAdminServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -3020,6 +3021,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AnalyticsAdminServiceClient implements BackgroundResource {
diff --git a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/AnalyticsAdminServiceSettings.java b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/AnalyticsAdminServiceSettings.java
index 85e685dac97f..7379c6626f67 100644
--- a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/AnalyticsAdminServiceSettings.java
+++ b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/AnalyticsAdminServiceSettings.java
@@ -63,6 +63,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AnalyticsAdminServiceSettings extends ClientSettings<AnalyticsAdminServiceSettings> {
diff --git a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/AnalyticsAdminServiceStub.java b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/AnalyticsAdminServiceStub.java
index faafdcd657df..02d9c091e32f 100644
--- a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/AnalyticsAdminServiceStub.java
+++ b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/AnalyticsAdminServiceStub.java
@@ -282,6 +282,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -289,6 +290,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AnalyticsAdminServiceStub implements BackgroundResource {
diff --git a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/AnalyticsAdminServiceStubSettings.java b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/AnalyticsAdminServiceStubSettings.java
index af4b7a5b700f..8f8c28b7aac3 100644
--- a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/AnalyticsAdminServiceStubSettings.java
+++ b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/AnalyticsAdminServiceStubSettings.java
@@ -315,6 +315,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -368,6 +369,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/GrpcAnalyticsAdminServiceCallableFactory.java b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/GrpcAnalyticsAdminServiceCallableFactory.java
index c276d52cd635..22622023d9e9 100644
--- a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/GrpcAnalyticsAdminServiceCallableFactory.java
+++ b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/GrpcAnalyticsAdminServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAnalyticsAdminServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/GrpcAnalyticsAdminServiceStub.java b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/GrpcAnalyticsAdminServiceStub.java
index e3e10b82cb9c..186b88f51490 100644
--- a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/GrpcAnalyticsAdminServiceStub.java
+++ b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/GrpcAnalyticsAdminServiceStub.java
@@ -292,6 +292,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -299,6 +300,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAnalyticsAdminServiceStub extends AnalyticsAdminServiceStub {
diff --git a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/HttpJsonAnalyticsAdminServiceCallableFactory.java b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/HttpJsonAnalyticsAdminServiceCallableFactory.java
index 42a66edb2816..23a4a8816100 100644
--- a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/HttpJsonAnalyticsAdminServiceCallableFactory.java
+++ b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/HttpJsonAnalyticsAdminServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAnalyticsAdminServiceCallableFactory
diff --git a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/HttpJsonAnalyticsAdminServiceStub.java b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/HttpJsonAnalyticsAdminServiceStub.java
index 4ebcc1d0e25e..30003ee4ccc6 100644
--- a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/HttpJsonAnalyticsAdminServiceStub.java
+++ b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1alpha/stub/HttpJsonAnalyticsAdminServiceStub.java
@@ -299,6 +299,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -306,6 +307,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAnalyticsAdminServiceStub extends AnalyticsAdminServiceStub {
diff --git a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/AnalyticsAdminServiceClient.java b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/AnalyticsAdminServiceClient.java
index f703d775ebcb..52bff61aafc6 100644
--- a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/AnalyticsAdminServiceClient.java
+++ b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/AnalyticsAdminServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1131,6 +1132,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AnalyticsAdminServiceClient implements BackgroundResource {
diff --git a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/AnalyticsAdminServiceSettings.java b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/AnalyticsAdminServiceSettings.java
index 0d8e97d7c562..0d47d49a02d3 100644
--- a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/AnalyticsAdminServiceSettings.java
+++ b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/AnalyticsAdminServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AnalyticsAdminServiceSettings extends ClientSettings<AnalyticsAdminServiceSettings> {
diff --git a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/AnalyticsAdminServiceStub.java b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/AnalyticsAdminServiceStub.java
index 95b867f53247..0d955a807f6a 100644
--- a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/AnalyticsAdminServiceStub.java
+++ b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/AnalyticsAdminServiceStub.java
@@ -115,6 +115,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AnalyticsAdminServiceStub implements BackgroundResource {
diff --git a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/AnalyticsAdminServiceStubSettings.java b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/AnalyticsAdminServiceStubSettings.java
index 85d7fe83cf0f..110f359b7764 100644
--- a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/AnalyticsAdminServiceStubSettings.java
+++ b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/AnalyticsAdminServiceStubSettings.java
@@ -148,6 +148,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -201,6 +202,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/GrpcAnalyticsAdminServiceCallableFactory.java b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/GrpcAnalyticsAdminServiceCallableFactory.java
index 82797d8a3e48..62536ac22d99 100644
--- a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/GrpcAnalyticsAdminServiceCallableFactory.java
+++ b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/GrpcAnalyticsAdminServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAnalyticsAdminServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/GrpcAnalyticsAdminServiceStub.java b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/GrpcAnalyticsAdminServiceStub.java
index 89a7e1829c53..a530c25093e6 100644
--- a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/GrpcAnalyticsAdminServiceStub.java
+++ b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/GrpcAnalyticsAdminServiceStub.java
@@ -125,6 +125,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAnalyticsAdminServiceStub extends AnalyticsAdminServiceStub {
diff --git a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/HttpJsonAnalyticsAdminServiceCallableFactory.java b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/HttpJsonAnalyticsAdminServiceCallableFactory.java
index 109d47ac5453..4beae5e3d5df 100644
--- a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/HttpJsonAnalyticsAdminServiceCallableFactory.java
+++ b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/HttpJsonAnalyticsAdminServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAnalyticsAdminServiceCallableFactory
diff --git a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/HttpJsonAnalyticsAdminServiceStub.java b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/HttpJsonAnalyticsAdminServiceStub.java
index 4c29e938fb73..98e49cdd671b 100644
--- a/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/HttpJsonAnalyticsAdminServiceStub.java
+++ b/java-analytics-admin/google-analytics-admin/src/main/java/com/google/analytics/admin/v1beta/stub/HttpJsonAnalyticsAdminServiceStub.java
@@ -132,6 +132,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -139,6 +140,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAnalyticsAdminServiceStub extends AnalyticsAdminServiceStub {
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AccessBindingName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AccessBindingName.java
index 9f08adbb77fa..a2514b2e3256 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AccessBindingName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AccessBindingName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccessBindingName implements ResourceName {
   private static final PathTemplate ACCOUNT_ACCESS_BINDING =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AccountName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AccountName.java
index 81dec64ac50c..13292e08ded2 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AccountName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AdSenseLinkName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AdSenseLinkName.java
index bd3f59668570..7848b8a1df29 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AdSenseLinkName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AdSenseLinkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdSenseLinkName implements ResourceName {
   private static final PathTemplate PROPERTY_ADSENSE_LINK =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AttributionSettingsName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AttributionSettingsName.java
index a1e52a52b82d..2708e9908da1 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AttributionSettingsName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AttributionSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AttributionSettingsName implements ResourceName {
   private static final PathTemplate PROPERTY =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AudienceName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AudienceName.java
index 105af697d768..6a6863239dfa 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AudienceName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/AudienceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AudienceName implements ResourceName {
   private static final PathTemplate PROPERTY_AUDIENCE =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/BigQueryLinkName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/BigQueryLinkName.java
index c27c1435d9ac..d54da675d204 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/BigQueryLinkName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/BigQueryLinkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BigQueryLinkName implements ResourceName {
   private static final PathTemplate PROPERTY_BIGQUERY_LINK =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/CalculatedMetricName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/CalculatedMetricName.java
index 45c94c2c79f7..729737066a99 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/CalculatedMetricName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/CalculatedMetricName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CalculatedMetricName implements ResourceName {
   private static final PathTemplate PROPERTY_CALCULATED_METRIC =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ChannelGroupName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ChannelGroupName.java
index aff81b8f9909..c96b74deb3f7 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ChannelGroupName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ChannelGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ChannelGroupName implements ResourceName {
   private static final PathTemplate PROPERTY_CHANNEL_GROUP =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ConversionEventName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ConversionEventName.java
index baf6ad2b5106..d4da3558782f 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ConversionEventName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ConversionEventName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversionEventName implements ResourceName {
   private static final PathTemplate PROPERTY_CONVERSION_EVENT =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/CustomDimensionName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/CustomDimensionName.java
index 76b287a0556b..72fb843d95d1 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/CustomDimensionName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/CustomDimensionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomDimensionName implements ResourceName {
   private static final PathTemplate PROPERTY_CUSTOM_DIMENSION =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/CustomMetricName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/CustomMetricName.java
index f6b869d31837..7057a2e2cef8 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/CustomMetricName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/CustomMetricName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomMetricName implements ResourceName {
   private static final PathTemplate PROPERTY_CUSTOM_METRIC =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DataRedactionSettingsName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DataRedactionSettingsName.java
index 15ebe38347dc..3e5d6f3b1287 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DataRedactionSettingsName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DataRedactionSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataRedactionSettingsName implements ResourceName {
   private static final PathTemplate PROPERTY_DATA_STREAM =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DataRetentionSettingsName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DataRetentionSettingsName.java
index bc57734a26db..5206f78fb9a0 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DataRetentionSettingsName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DataRetentionSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataRetentionSettingsName implements ResourceName {
   private static final PathTemplate PROPERTY =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DataSharingSettingsName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DataSharingSettingsName.java
index f05f11c6afa1..20d8ffc5699e 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DataSharingSettingsName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DataSharingSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataSharingSettingsName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DataStreamName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DataStreamName.java
index 2dffe4edb0ca..d76d0551b846 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DataStreamName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DataStreamName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataStreamName implements ResourceName {
   private static final PathTemplate PROPERTY_DATA_STREAM =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DisplayVideo360AdvertiserLinkName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DisplayVideo360AdvertiserLinkName.java
index 932683d4ce96..c94807069f84 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DisplayVideo360AdvertiserLinkName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DisplayVideo360AdvertiserLinkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DisplayVideo360AdvertiserLinkName implements ResourceName {
   private static final PathTemplate PROPERTY_DISPLAY_VIDEO360_ADVERTISER_LINK =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DisplayVideo360AdvertiserLinkProposalName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DisplayVideo360AdvertiserLinkProposalName.java
index 7f394e9049d8..17f96052fa3c 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DisplayVideo360AdvertiserLinkProposalName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/DisplayVideo360AdvertiserLinkProposalName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DisplayVideo360AdvertiserLinkProposalName implements ResourceName {
   private static final PathTemplate PROPERTY_DISPLAY_VIDEO360_ADVERTISER_LINK_PROPOSAL =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/EnhancedMeasurementSettingsName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/EnhancedMeasurementSettingsName.java
index 26b094c32a63..4097488e97f8 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/EnhancedMeasurementSettingsName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/EnhancedMeasurementSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EnhancedMeasurementSettingsName implements ResourceName {
   private static final PathTemplate PROPERTY_DATA_STREAM =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/EventCreateRuleName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/EventCreateRuleName.java
index 451c505cda36..70623c9497d6 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/EventCreateRuleName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/EventCreateRuleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EventCreateRuleName implements ResourceName {
   private static final PathTemplate PROPERTY_DATA_STREAM_EVENT_CREATE_RULE =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/EventEditRuleName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/EventEditRuleName.java
index ff18390928c2..45bb580484ce 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/EventEditRuleName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/EventEditRuleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EventEditRuleName implements ResourceName {
   private static final PathTemplate PROPERTY_DATA_STREAM_EVENT_EDIT_RULE =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ExpandedDataSetName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ExpandedDataSetName.java
index bcf9239d8976..d569ca437559 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ExpandedDataSetName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ExpandedDataSetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExpandedDataSetName implements ResourceName {
   private static final PathTemplate PROPERTY_EXPANDED_DATA_SET =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/FirebaseLinkName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/FirebaseLinkName.java
index edf905db5a06..5b114863f4a9 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/FirebaseLinkName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/FirebaseLinkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FirebaseLinkName implements ResourceName {
   private static final PathTemplate PROPERTY_FIREBASE_LINK =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/GlobalSiteTagName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/GlobalSiteTagName.java
index 11464f7c04c6..a39ad7b75dbd 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/GlobalSiteTagName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/GlobalSiteTagName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlobalSiteTagName implements ResourceName {
   private static final PathTemplate PROPERTY_DATA_STREAM =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/GoogleAdsLinkName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/GoogleAdsLinkName.java
index 8b808a8d11d8..fd4dc25d4114 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/GoogleAdsLinkName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/GoogleAdsLinkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GoogleAdsLinkName implements ResourceName {
   private static final PathTemplate PROPERTY_GOOGLE_ADS_LINK =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/GoogleSignalsSettingsName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/GoogleSignalsSettingsName.java
index 625bef50d57d..469bbee8a1f8 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/GoogleSignalsSettingsName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/GoogleSignalsSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GoogleSignalsSettingsName implements ResourceName {
   private static final PathTemplate PROPERTY =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/KeyEventName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/KeyEventName.java
index 04d32100dd73..13a2c4a555c7 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/KeyEventName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/KeyEventName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class KeyEventName implements ResourceName {
   private static final PathTemplate PROPERTY_KEY_EVENT =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/MeasurementProtocolSecretName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/MeasurementProtocolSecretName.java
index cdf8f313af00..9df926da3301 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/MeasurementProtocolSecretName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/MeasurementProtocolSecretName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MeasurementProtocolSecretName implements ResourceName {
   private static final PathTemplate PROPERTY_DATA_STREAM_MEASUREMENT_PROTOCOL_SECRET =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/PropertyName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/PropertyName.java
index d479c47a9d84..a551ba3336e5 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/PropertyName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/PropertyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PropertyName implements ResourceName {
   private static final PathTemplate PROPERTY =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ReportingDataAnnotationName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ReportingDataAnnotationName.java
index 4652a2d2fa6f..bb8495050fbe 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ReportingDataAnnotationName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ReportingDataAnnotationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReportingDataAnnotationName implements ResourceName {
   private static final PathTemplate PROPERTY_REPORTING_DATA_ANNOTATION =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ReportingIdentitySettingsName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ReportingIdentitySettingsName.java
index 6288751c0649..b5a05dc1d288 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ReportingIdentitySettingsName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/ReportingIdentitySettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReportingIdentitySettingsName implements ResourceName {
   private static final PathTemplate PROPERTY =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/RollupPropertySourceLinkName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/RollupPropertySourceLinkName.java
index 5c101f1e3242..899828511fc2 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/RollupPropertySourceLinkName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/RollupPropertySourceLinkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RollupPropertySourceLinkName implements ResourceName {
   private static final PathTemplate PROPERTY_ROLLUP_PROPERTY_SOURCE_LINK =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/SKAdNetworkConversionValueSchemaName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/SKAdNetworkConversionValueSchemaName.java
index aebd75cdd408..bea232c800ce 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/SKAdNetworkConversionValueSchemaName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/SKAdNetworkConversionValueSchemaName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SKAdNetworkConversionValueSchemaName implements ResourceName {
   private static final PathTemplate PROPERTY_DATA_STREAM_SKADNETWORK_CONVERSION_VALUE_SCHEMA =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/SearchAds360LinkName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/SearchAds360LinkName.java
index db84af83ef45..53a091e03951 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/SearchAds360LinkName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/SearchAds360LinkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SearchAds360LinkName implements ResourceName {
   private static final PathTemplate PROPERTY_SEARCH_ADS360_LINK =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/SubpropertyEventFilterName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/SubpropertyEventFilterName.java
index 339fbf402072..4800582d9294 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/SubpropertyEventFilterName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/SubpropertyEventFilterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SubpropertyEventFilterName implements ResourceName {
   private static final PathTemplate PROPERTY_SUB_PROPERTY_EVENT_FILTER =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/SubpropertySyncConfigName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/SubpropertySyncConfigName.java
index 5a9bf502be8c..5545dfb81c68 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/SubpropertySyncConfigName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/SubpropertySyncConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SubpropertySyncConfigName implements ResourceName {
   private static final PathTemplate PROPERTY_SUBPROPERTY_SYNC_CONFIG =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/UserProvidedDataSettingsName.java b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/UserProvidedDataSettingsName.java
index b59c5571dc64..195844c06cc7 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/UserProvidedDataSettingsName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1alpha/src/main/java/com/google/analytics/admin/v1alpha/UserProvidedDataSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserProvidedDataSettingsName implements ResourceName {
   private static final PathTemplate PROPERTY =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/AccountName.java b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/AccountName.java
index d83f25986b6d..018d94a83544 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/AccountName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/ConversionEventName.java b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/ConversionEventName.java
index a111132ea17a..dea958ef42ed 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/ConversionEventName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/ConversionEventName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversionEventName implements ResourceName {
   private static final PathTemplate PROPERTY_CONVERSION_EVENT =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/CustomDimensionName.java b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/CustomDimensionName.java
index 5c3ee2861dcb..efc097223ad8 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/CustomDimensionName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/CustomDimensionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomDimensionName implements ResourceName {
   private static final PathTemplate PROPERTY_CUSTOM_DIMENSION =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/CustomMetricName.java b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/CustomMetricName.java
index e5b59908606d..86a4c9f97993 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/CustomMetricName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/CustomMetricName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomMetricName implements ResourceName {
   private static final PathTemplate PROPERTY_CUSTOM_METRIC =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/DataRetentionSettingsName.java b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/DataRetentionSettingsName.java
index 412aaccdaa55..96c4b28ebe8b 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/DataRetentionSettingsName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/DataRetentionSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataRetentionSettingsName implements ResourceName {
   private static final PathTemplate PROPERTY =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/DataSharingSettingsName.java b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/DataSharingSettingsName.java
index 55e53564fcb9..dbcc0b5278f8 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/DataSharingSettingsName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/DataSharingSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataSharingSettingsName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/DataStreamName.java b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/DataStreamName.java
index bb150de49847..625982f92e0f 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/DataStreamName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/DataStreamName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataStreamName implements ResourceName {
   private static final PathTemplate PROPERTY_DATA_STREAM =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/FirebaseLinkName.java b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/FirebaseLinkName.java
index 4c164502ff75..be01aa5a4db2 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/FirebaseLinkName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/FirebaseLinkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FirebaseLinkName implements ResourceName {
   private static final PathTemplate PROPERTY_FIREBASE_LINK =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/GoogleAdsLinkName.java b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/GoogleAdsLinkName.java
index e7c4420edab1..5584ea89eae4 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/GoogleAdsLinkName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/GoogleAdsLinkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GoogleAdsLinkName implements ResourceName {
   private static final PathTemplate PROPERTY_GOOGLE_ADS_LINK =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/KeyEventName.java b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/KeyEventName.java
index 4528d4a1e8f7..012009e6c25a 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/KeyEventName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/KeyEventName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class KeyEventName implements ResourceName {
   private static final PathTemplate PROPERTY_KEY_EVENT =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/MeasurementProtocolSecretName.java b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/MeasurementProtocolSecretName.java
index 3a8213cbe54b..29fe07de5761 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/MeasurementProtocolSecretName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/MeasurementProtocolSecretName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MeasurementProtocolSecretName implements ResourceName {
   private static final PathTemplate PROPERTY_DATA_STREAM_MEASUREMENT_PROTOCOL_SECRET =
diff --git a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/PropertyName.java b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/PropertyName.java
index 370d143d8016..688475961c37 100644
--- a/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/PropertyName.java
+++ b/java-analytics-admin/proto-google-analytics-admin-v1beta/src/main/java/com/google/analytics/admin/v1beta/PropertyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PropertyName implements ResourceName {
   private static final PathTemplate PROPERTY =
diff --git a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/AlphaAnalyticsDataClient.java b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/AlphaAnalyticsDataClient.java
index 3534b78bc29a..8764b272c6a2 100644
--- a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/AlphaAnalyticsDataClient.java
+++ b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/AlphaAnalyticsDataClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -434,6 +435,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AlphaAnalyticsDataClient implements BackgroundResource {
diff --git a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/AlphaAnalyticsDataSettings.java b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/AlphaAnalyticsDataSettings.java
index 7bf2a4425ff3..b0d0233b1bc2 100644
--- a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/AlphaAnalyticsDataSettings.java
+++ b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/AlphaAnalyticsDataSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AlphaAnalyticsDataSettings extends ClientSettings<AlphaAnalyticsDataSettings> {
diff --git a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/AlphaAnalyticsDataStub.java b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/AlphaAnalyticsDataStub.java
index 0a327e94cada..1e710fb11c01 100644
--- a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/AlphaAnalyticsDataStub.java
+++ b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/AlphaAnalyticsDataStub.java
@@ -56,6 +56,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AlphaAnalyticsDataStub implements BackgroundResource {
diff --git a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/AlphaAnalyticsDataStubSettings.java b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/AlphaAnalyticsDataStubSettings.java
index 21903cda268b..506d06535014 100644
--- a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/AlphaAnalyticsDataStubSettings.java
+++ b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/AlphaAnalyticsDataStubSettings.java
@@ -89,6 +89,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/GrpcAlphaAnalyticsDataCallableFactory.java b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/GrpcAlphaAnalyticsDataCallableFactory.java
index 0007e67d873b..bd34bf8bb60a 100644
--- a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/GrpcAlphaAnalyticsDataCallableFactory.java
+++ b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/GrpcAlphaAnalyticsDataCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAlphaAnalyticsDataCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/GrpcAlphaAnalyticsDataStub.java b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/GrpcAlphaAnalyticsDataStub.java
index 461342e88a44..b85a3fcb2180 100644
--- a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/GrpcAlphaAnalyticsDataStub.java
+++ b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/GrpcAlphaAnalyticsDataStub.java
@@ -65,6 +65,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAlphaAnalyticsDataStub extends AlphaAnalyticsDataStub {
diff --git a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/HttpJsonAlphaAnalyticsDataCallableFactory.java b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/HttpJsonAlphaAnalyticsDataCallableFactory.java
index 5d933ba6ac27..44f62a6c06b6 100644
--- a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/HttpJsonAlphaAnalyticsDataCallableFactory.java
+++ b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/HttpJsonAlphaAnalyticsDataCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAlphaAnalyticsDataCallableFactory
diff --git a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/HttpJsonAlphaAnalyticsDataStub.java b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/HttpJsonAlphaAnalyticsDataStub.java
index 285e4d1ce76d..00dd5e555b04 100644
--- a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/HttpJsonAlphaAnalyticsDataStub.java
+++ b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1alpha/stub/HttpJsonAlphaAnalyticsDataStub.java
@@ -74,6 +74,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAlphaAnalyticsDataStub extends AlphaAnalyticsDataStub {
diff --git a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/BetaAnalyticsDataClient.java b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/BetaAnalyticsDataClient.java
index 719398201823..d8648ed90cff 100644
--- a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/BetaAnalyticsDataClient.java
+++ b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/BetaAnalyticsDataClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -338,6 +339,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class BetaAnalyticsDataClient implements BackgroundResource {
diff --git a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/BetaAnalyticsDataSettings.java b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/BetaAnalyticsDataSettings.java
index aeca237072c0..21331886052f 100644
--- a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/BetaAnalyticsDataSettings.java
+++ b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/BetaAnalyticsDataSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class BetaAnalyticsDataSettings extends ClientSettings<BetaAnalyticsDataSettings> {
diff --git a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/BetaAnalyticsDataStub.java b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/BetaAnalyticsDataStub.java
index 0665297d9723..c2242c816e6d 100644
--- a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/BetaAnalyticsDataStub.java
+++ b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/BetaAnalyticsDataStub.java
@@ -47,6 +47,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class BetaAnalyticsDataStub implements BackgroundResource {
diff --git a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/BetaAnalyticsDataStubSettings.java b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/BetaAnalyticsDataStubSettings.java
index 515bfb37ff77..a617459858b7 100644
--- a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/BetaAnalyticsDataStubSettings.java
+++ b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/BetaAnalyticsDataStubSettings.java
@@ -80,6 +80,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -158,6 +159,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/GrpcBetaAnalyticsDataCallableFactory.java b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/GrpcBetaAnalyticsDataCallableFactory.java
index 88219d6befb7..99515e87b929 100644
--- a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/GrpcBetaAnalyticsDataCallableFactory.java
+++ b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/GrpcBetaAnalyticsDataCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcBetaAnalyticsDataCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/GrpcBetaAnalyticsDataStub.java b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/GrpcBetaAnalyticsDataStub.java
index bf33c4a2e6bc..c1be584b56b8 100644
--- a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/GrpcBetaAnalyticsDataStub.java
+++ b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/GrpcBetaAnalyticsDataStub.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcBetaAnalyticsDataStub extends BetaAnalyticsDataStub {
diff --git a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/HttpJsonBetaAnalyticsDataCallableFactory.java b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/HttpJsonBetaAnalyticsDataCallableFactory.java
index 519a2e10532c..cd7938c7c6ce 100644
--- a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/HttpJsonBetaAnalyticsDataCallableFactory.java
+++ b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/HttpJsonBetaAnalyticsDataCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonBetaAnalyticsDataCallableFactory
diff --git a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/HttpJsonBetaAnalyticsDataStub.java b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/HttpJsonBetaAnalyticsDataStub.java
index 306af8254391..cb32e9667832 100644
--- a/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/HttpJsonBetaAnalyticsDataStub.java
+++ b/java-analytics-data/google-analytics-data/src/main/java/com/google/analytics/data/v1beta/stub/HttpJsonBetaAnalyticsDataStub.java
@@ -65,6 +65,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonBetaAnalyticsDataStub extends BetaAnalyticsDataStub {
diff --git a/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/AudienceListName.java b/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/AudienceListName.java
index a96e34e79181..a7cb91628121 100644
--- a/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/AudienceListName.java
+++ b/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/AudienceListName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AudienceListName implements ResourceName {
   private static final PathTemplate PROPERTY_AUDIENCE_LIST =
diff --git a/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/MetadataName.java b/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/MetadataName.java
index 869cbd9c5102..15803d49efff 100644
--- a/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/MetadataName.java
+++ b/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/MetadataName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetadataName implements ResourceName {
   private static final PathTemplate PROPERTY =
diff --git a/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/PropertyName.java b/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/PropertyName.java
index 4cff2388e8eb..a397f94a0143 100644
--- a/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/PropertyName.java
+++ b/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/PropertyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PropertyName implements ResourceName {
   private static final PathTemplate PROPERTY =
diff --git a/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/PropertyQuotasSnapshotName.java b/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/PropertyQuotasSnapshotName.java
index d7519aec120d..f3808f464642 100644
--- a/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/PropertyQuotasSnapshotName.java
+++ b/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/PropertyQuotasSnapshotName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PropertyQuotasSnapshotName implements ResourceName {
   private static final PathTemplate PROPERTY =
diff --git a/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/RecurringAudienceListName.java b/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/RecurringAudienceListName.java
index 4bf98392596a..a36747cf54f9 100644
--- a/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/RecurringAudienceListName.java
+++ b/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/RecurringAudienceListName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RecurringAudienceListName implements ResourceName {
   private static final PathTemplate PROPERTY_RECURRING_AUDIENCE_LIST =
diff --git a/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/ReportTaskName.java b/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/ReportTaskName.java
index 2952d9e8eb2b..daae8b5621bb 100644
--- a/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/ReportTaskName.java
+++ b/java-analytics-data/proto-google-analytics-data-v1alpha/src/main/java/com/google/analytics/data/v1alpha/ReportTaskName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReportTaskName implements ResourceName {
   private static final PathTemplate PROPERTY_REPORT_TASK =
diff --git a/java-analytics-data/proto-google-analytics-data-v1beta/src/main/java/com/google/analytics/data/v1beta/AudienceExportName.java b/java-analytics-data/proto-google-analytics-data-v1beta/src/main/java/com/google/analytics/data/v1beta/AudienceExportName.java
index 4783a9e1cf64..e4ca94e13059 100644
--- a/java-analytics-data/proto-google-analytics-data-v1beta/src/main/java/com/google/analytics/data/v1beta/AudienceExportName.java
+++ b/java-analytics-data/proto-google-analytics-data-v1beta/src/main/java/com/google/analytics/data/v1beta/AudienceExportName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AudienceExportName implements ResourceName {
   private static final PathTemplate PROPERTY_AUDIENCE_EXPORT =
diff --git a/java-analytics-data/proto-google-analytics-data-v1beta/src/main/java/com/google/analytics/data/v1beta/MetadataName.java b/java-analytics-data/proto-google-analytics-data-v1beta/src/main/java/com/google/analytics/data/v1beta/MetadataName.java
index 51a020ca13f2..22b2918b2444 100644
--- a/java-analytics-data/proto-google-analytics-data-v1beta/src/main/java/com/google/analytics/data/v1beta/MetadataName.java
+++ b/java-analytics-data/proto-google-analytics-data-v1beta/src/main/java/com/google/analytics/data/v1beta/MetadataName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetadataName implements ResourceName {
   private static final PathTemplate PROPERTY =
diff --git a/java-analytics-data/proto-google-analytics-data-v1beta/src/main/java/com/google/analytics/data/v1beta/PropertyName.java b/java-analytics-data/proto-google-analytics-data-v1beta/src/main/java/com/google/analytics/data/v1beta/PropertyName.java
index e145f372389d..0e7a58b38278 100644
--- a/java-analytics-data/proto-google-analytics-data-v1beta/src/main/java/com/google/analytics/data/v1beta/PropertyName.java
+++ b/java-analytics-data/proto-google-analytics-data-v1beta/src/main/java/com/google/analytics/data/v1beta/PropertyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PropertyName implements ResourceName {
   private static final PathTemplate PROPERTY =
diff --git a/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/AnalyticsHubServiceClient.java b/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/AnalyticsHubServiceClient.java
index 06472a38390b..dc78fb38125f 100644
--- a/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/AnalyticsHubServiceClient.java
+++ b/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/AnalyticsHubServiceClient.java
@@ -44,6 +44,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -679,6 +680,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnalyticsHubServiceClient implements BackgroundResource {
   private final AnalyticsHubServiceSettings settings;
diff --git a/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/AnalyticsHubServiceSettings.java b/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/AnalyticsHubServiceSettings.java
index 46f1f8595f6d..63519f20a972 100644
--- a/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/AnalyticsHubServiceSettings.java
+++ b/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/AnalyticsHubServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnalyticsHubServiceSettings extends ClientSettings<AnalyticsHubServiceSettings> {
 
diff --git a/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/AnalyticsHubServiceStub.java b/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/AnalyticsHubServiceStub.java
index 879a8de708d1..db80cabee5b6 100644
--- a/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/AnalyticsHubServiceStub.java
+++ b/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/AnalyticsHubServiceStub.java
@@ -76,6 +76,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AnalyticsHubServiceStub implements BackgroundResource {
 
diff --git a/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/AnalyticsHubServiceStubSettings.java b/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/AnalyticsHubServiceStubSettings.java
index 9ab54f78cc76..dde38652f633 100644
--- a/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/AnalyticsHubServiceStubSettings.java
+++ b/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/AnalyticsHubServiceStubSettings.java
@@ -110,6 +110,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -188,6 +189,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AnalyticsHubServiceStubSettings extends StubSettings<AnalyticsHubServiceStubSettings> {
diff --git a/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/GrpcAnalyticsHubServiceCallableFactory.java b/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/GrpcAnalyticsHubServiceCallableFactory.java
index 8610c7e06809..d47ca524ae52 100644
--- a/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/GrpcAnalyticsHubServiceCallableFactory.java
+++ b/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/GrpcAnalyticsHubServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAnalyticsHubServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/GrpcAnalyticsHubServiceStub.java b/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/GrpcAnalyticsHubServiceStub.java
index d9cbf9ad9595..4e268641c7bf 100644
--- a/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/GrpcAnalyticsHubServiceStub.java
+++ b/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/GrpcAnalyticsHubServiceStub.java
@@ -85,6 +85,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAnalyticsHubServiceStub extends AnalyticsHubServiceStub {
   private static final MethodDescriptor<ListDataExchangesRequest, ListDataExchangesResponse>
diff --git a/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/HttpJsonAnalyticsHubServiceCallableFactory.java b/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/HttpJsonAnalyticsHubServiceCallableFactory.java
index 3af0e3d4f6e8..74ecafa0586f 100644
--- a/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/HttpJsonAnalyticsHubServiceCallableFactory.java
+++ b/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/HttpJsonAnalyticsHubServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAnalyticsHubServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/HttpJsonAnalyticsHubServiceStub.java b/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/HttpJsonAnalyticsHubServiceStub.java
index 7c57036578b3..769214931e00 100644
--- a/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/HttpJsonAnalyticsHubServiceStub.java
+++ b/java-analyticshub/google-cloud-analyticshub/src/main/java/com/google/cloud/bigquery/analyticshub/v1/stub/HttpJsonAnalyticsHubServiceStub.java
@@ -94,6 +94,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAnalyticsHubServiceStub extends AnalyticsHubServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/DataExchangeName.java b/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/DataExchangeName.java
index 8ee17c73b8a4..720510a73ef8 100644
--- a/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/DataExchangeName.java
+++ b/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/DataExchangeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataExchangeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_EXCHANGE =
diff --git a/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/ListingName.java b/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/ListingName.java
index aee39d5eb642..16e8b9dd39f0 100644
--- a/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/ListingName.java
+++ b/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/ListingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ListingName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_EXCHANGE_LISTING =
diff --git a/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/LocationName.java b/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/LocationName.java
index fec3425c469c..70e40200ccba 100644
--- a/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/LocationName.java
+++ b/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/QueryTemplateName.java b/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/QueryTemplateName.java
index b2a0bb42ad86..229b61662d4f 100644
--- a/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/QueryTemplateName.java
+++ b/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/QueryTemplateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QueryTemplateName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_EXCHANGE_QUERY_TEMPLATE =
diff --git a/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/SubscriptionName.java b/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/SubscriptionName.java
index 9214068a4873..16fb78c4907c 100644
--- a/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/SubscriptionName.java
+++ b/java-analyticshub/proto-google-cloud-analyticshub-v1/src/main/java/com/google/cloud/bigquery/analyticshub/v1/SubscriptionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SubscriptionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SUBSCRIPTION =
diff --git a/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/ApiGatewayServiceClient.java b/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/ApiGatewayServiceClient.java
index 1bdd0594cd6a..6db20de6731e 100644
--- a/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/ApiGatewayServiceClient.java
+++ b/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/ApiGatewayServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -421,6 +422,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiGatewayServiceClient implements BackgroundResource {
   private final ApiGatewayServiceSettings settings;
diff --git a/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/ApiGatewayServiceSettings.java b/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/ApiGatewayServiceSettings.java
index 1d334ed30440..342411a12ade 100644
--- a/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/ApiGatewayServiceSettings.java
+++ b/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/ApiGatewayServiceSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiGatewayServiceSettings extends ClientSettings<ApiGatewayServiceSettings> {
 
diff --git a/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/ApiGatewayServiceStub.java b/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/ApiGatewayServiceStub.java
index 1d17076d3d1f..90a69ec2d8e9 100644
--- a/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/ApiGatewayServiceStub.java
+++ b/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/ApiGatewayServiceStub.java
@@ -49,6 +49,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ApiGatewayServiceStub implements BackgroundResource {
 
diff --git a/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/ApiGatewayServiceStubSettings.java b/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/ApiGatewayServiceStubSettings.java
index 5836a71f0acb..249512611975 100644
--- a/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/ApiGatewayServiceStubSettings.java
+++ b/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/ApiGatewayServiceStubSettings.java
@@ -83,6 +83,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -161,6 +162,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ApiGatewayServiceStubSettings extends StubSettings<ApiGatewayServiceStubSettings> {
diff --git a/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/GrpcApiGatewayServiceCallableFactory.java b/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/GrpcApiGatewayServiceCallableFactory.java
index 467506929064..7bacaa42f879 100644
--- a/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/GrpcApiGatewayServiceCallableFactory.java
+++ b/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/GrpcApiGatewayServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcApiGatewayServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/GrpcApiGatewayServiceStub.java b/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/GrpcApiGatewayServiceStub.java
index 5919507cf50d..e083b81ccc91 100644
--- a/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/GrpcApiGatewayServiceStub.java
+++ b/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/GrpcApiGatewayServiceStub.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcApiGatewayServiceStub extends ApiGatewayServiceStub {
   private static final MethodDescriptor<ListGatewaysRequest, ListGatewaysResponse>
diff --git a/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/HttpJsonApiGatewayServiceCallableFactory.java b/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/HttpJsonApiGatewayServiceCallableFactory.java
index 0980598b77ae..199a1f7b87d3 100644
--- a/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/HttpJsonApiGatewayServiceCallableFactory.java
+++ b/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/HttpJsonApiGatewayServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApiGatewayServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/HttpJsonApiGatewayServiceStub.java b/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/HttpJsonApiGatewayServiceStub.java
index 2782d4fd3b2b..0760be1fd498 100644
--- a/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/HttpJsonApiGatewayServiceStub.java
+++ b/java-api-gateway/google-cloud-api-gateway/src/main/java/com/google/cloud/apigateway/v1/stub/HttpJsonApiGatewayServiceStub.java
@@ -69,6 +69,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -76,6 +77,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApiGatewayServiceStub extends ApiGatewayServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-api-gateway/proto-google-cloud-api-gateway-v1/src/main/java/com/google/cloud/apigateway/v1/ApiConfigName.java b/java-api-gateway/proto-google-cloud-api-gateway-v1/src/main/java/com/google/cloud/apigateway/v1/ApiConfigName.java
index 0c4bfcdadde2..6e0f15861af9 100644
--- a/java-api-gateway/proto-google-cloud-api-gateway-v1/src/main/java/com/google/cloud/apigateway/v1/ApiConfigName.java
+++ b/java-api-gateway/proto-google-cloud-api-gateway-v1/src/main/java/com/google/cloud/apigateway/v1/ApiConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiConfigName implements ResourceName {
   private static final PathTemplate PROJECT_API_API_CONFIG =
diff --git a/java-api-gateway/proto-google-cloud-api-gateway-v1/src/main/java/com/google/cloud/apigateway/v1/ApiName.java b/java-api-gateway/proto-google-cloud-api-gateway-v1/src/main/java/com/google/cloud/apigateway/v1/ApiName.java
index 781ef745f11f..7ac72324d601 100644
--- a/java-api-gateway/proto-google-cloud-api-gateway-v1/src/main/java/com/google/cloud/apigateway/v1/ApiName.java
+++ b/java-api-gateway/proto-google-cloud-api-gateway-v1/src/main/java/com/google/cloud/apigateway/v1/ApiName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiName implements ResourceName {
   private static final PathTemplate PROJECT_API =
diff --git a/java-api-gateway/proto-google-cloud-api-gateway-v1/src/main/java/com/google/cloud/apigateway/v1/GatewayName.java b/java-api-gateway/proto-google-cloud-api-gateway-v1/src/main/java/com/google/cloud/apigateway/v1/GatewayName.java
index 31e3284f725e..890f50dc78d4 100644
--- a/java-api-gateway/proto-google-cloud-api-gateway-v1/src/main/java/com/google/cloud/apigateway/v1/GatewayName.java
+++ b/java-api-gateway/proto-google-cloud-api-gateway-v1/src/main/java/com/google/cloud/apigateway/v1/GatewayName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GatewayName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GATEWAY =
diff --git a/java-api-gateway/proto-google-cloud-api-gateway-v1/src/main/java/com/google/cloud/apigateway/v1/LocationName.java b/java-api-gateway/proto-google-cloud-api-gateway-v1/src/main/java/com/google/cloud/apigateway/v1/LocationName.java
index 75048b1cc5dc..980024a24b8b 100644
--- a/java-api-gateway/proto-google-cloud-api-gateway-v1/src/main/java/com/google/cloud/apigateway/v1/LocationName.java
+++ b/java-api-gateway/proto-google-cloud-api-gateway-v1/src/main/java/com/google/cloud/apigateway/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/ConnectionServiceClient.java b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/ConnectionServiceClient.java
index e9e1cef5dd06..11a4a43a6524 100644
--- a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/ConnectionServiceClient.java
+++ b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/ConnectionServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -142,6 +143,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConnectionServiceClient implements BackgroundResource {
   private final ConnectionServiceSettings settings;
diff --git a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/ConnectionServiceSettings.java b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/ConnectionServiceSettings.java
index 9e275523cfc8..10abb1943478 100644
--- a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/ConnectionServiceSettings.java
+++ b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/ConnectionServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConnectionServiceSettings extends ClientSettings<ConnectionServiceSettings> {
 
diff --git a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/TetherClient.java b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/TetherClient.java
index f3cd1b0dc68f..bd296833e614 100644
--- a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/TetherClient.java
+++ b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/TetherClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TetherClient implements BackgroundResource {
   private final TetherSettings settings;
diff --git a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/TetherSettings.java b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/TetherSettings.java
index d13fceca874c..1da7ed172bb1 100644
--- a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/TetherSettings.java
+++ b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/TetherSettings.java
@@ -30,6 +30,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -80,6 +81,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TetherSettings extends ClientSettings<TetherSettings> {
 
diff --git a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/ConnectionServiceStub.java b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/ConnectionServiceStub.java
index c1235c18367d..25478406d58e 100644
--- a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/ConnectionServiceStub.java
+++ b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/ConnectionServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.cloud.apigeeconnect.v1.ListConnectionsRequest;
 import com.google.cloud.apigeeconnect.v1.ListConnectionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ConnectionServiceStub implements BackgroundResource {
 
diff --git a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/ConnectionServiceStubSettings.java b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/ConnectionServiceStubSettings.java
index 6f65403b79c9..39505ffe9e1f 100644
--- a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/ConnectionServiceStubSettings.java
+++ b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/ConnectionServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ConnectionServiceStubSettings extends StubSettings<ConnectionServiceStubSettings> {
diff --git a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/GrpcConnectionServiceCallableFactory.java b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/GrpcConnectionServiceCallableFactory.java
index 5bbbfc3b1aa1..f24668061e45 100644
--- a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/GrpcConnectionServiceCallableFactory.java
+++ b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/GrpcConnectionServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConnectionServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/GrpcConnectionServiceStub.java b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/GrpcConnectionServiceStub.java
index 45b995c77c5e..10ec714f8791 100644
--- a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/GrpcConnectionServiceStub.java
+++ b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/GrpcConnectionServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConnectionServiceStub extends ConnectionServiceStub {
   private static final MethodDescriptor<ListConnectionsRequest, ListConnectionsResponse>
diff --git a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/GrpcTetherCallableFactory.java b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/GrpcTetherCallableFactory.java
index e9720bc945fd..3d2b4b80d68d 100644
--- a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/GrpcTetherCallableFactory.java
+++ b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/GrpcTetherCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTetherCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/GrpcTetherStub.java b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/GrpcTetherStub.java
index 396579ae685a..686ac740c547 100644
--- a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/GrpcTetherStub.java
+++ b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/GrpcTetherStub.java
@@ -30,6 +30,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTetherStub extends TetherStub {
   private static final MethodDescriptor<EgressResponse, EgressRequest> egressMethodDescriptor =
diff --git a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/HttpJsonConnectionServiceCallableFactory.java b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/HttpJsonConnectionServiceCallableFactory.java
index 06e53d47b717..5a40b3849119 100644
--- a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/HttpJsonConnectionServiceCallableFactory.java
+++ b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/HttpJsonConnectionServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConnectionServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/HttpJsonConnectionServiceStub.java b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/HttpJsonConnectionServiceStub.java
index 3cf8a205a409..86c9e0f106f4 100644
--- a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/HttpJsonConnectionServiceStub.java
+++ b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/HttpJsonConnectionServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConnectionServiceStub extends ConnectionServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/TetherStub.java b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/TetherStub.java
index affda077bafa..424bc479e782 100644
--- a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/TetherStub.java
+++ b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/TetherStub.java
@@ -21,6 +21,7 @@
 import com.google.cloud.apigeeconnect.v1.EgressRequest;
 import com.google.cloud.apigeeconnect.v1.EgressResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TetherStub implements BackgroundResource {
 
diff --git a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/TetherStubSettings.java b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/TetherStubSettings.java
index eab268d3af75..7cd5ec62fd7a 100644
--- a/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/TetherStubSettings.java
+++ b/java-apigee-connect/google-cloud-apigee-connect/src/main/java/com/google/cloud/apigeeconnect/v1/stub/TetherStubSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TetherStubSettings extends StubSettings<TetherStubSettings> {
diff --git a/java-apigee-connect/proto-google-cloud-apigee-connect-v1/src/main/java/com/google/cloud/apigeeconnect/v1/EndpointName.java b/java-apigee-connect/proto-google-cloud-apigee-connect-v1/src/main/java/com/google/cloud/apigeeconnect/v1/EndpointName.java
index 16bf12e1638c..9c8e5208230c 100644
--- a/java-apigee-connect/proto-google-cloud-apigee-connect-v1/src/main/java/com/google/cloud/apigeeconnect/v1/EndpointName.java
+++ b/java-apigee-connect/proto-google-cloud-apigee-connect-v1/src/main/java/com/google/cloud/apigeeconnect/v1/EndpointName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EndpointName implements ResourceName {
   private static final PathTemplate PROJECT_ENDPOINT =
diff --git a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/ProvisioningClient.java b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/ProvisioningClient.java
index 5b4525f8af49..008c06ee68cb 100644
--- a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/ProvisioningClient.java
+++ b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/ProvisioningClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -263,6 +264,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProvisioningClient implements BackgroundResource {
   private final ProvisioningSettings settings;
diff --git a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/ProvisioningSettings.java b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/ProvisioningSettings.java
index 4a0433104dbc..1914bcde7af8 100644
--- a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/ProvisioningSettings.java
+++ b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/ProvisioningSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProvisioningSettings extends ClientSettings<ProvisioningSettings> {
 
diff --git a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/RegistryClient.java b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/RegistryClient.java
index 11e48c95ef04..b03c69363a96 100644
--- a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/RegistryClient.java
+++ b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/RegistryClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -845,6 +846,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegistryClient implements BackgroundResource {
   private final RegistrySettings settings;
diff --git a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/RegistrySettings.java b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/RegistrySettings.java
index 534bdd4dd220..0df37a491117 100644
--- a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/RegistrySettings.java
+++ b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/RegistrySettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegistrySettings extends ClientSettings<RegistrySettings> {
 
diff --git a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/GrpcProvisioningCallableFactory.java b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/GrpcProvisioningCallableFactory.java
index e4c3c90f13c8..b01c4c685848 100644
--- a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/GrpcProvisioningCallableFactory.java
+++ b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/GrpcProvisioningCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcProvisioningCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/GrpcProvisioningStub.java b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/GrpcProvisioningStub.java
index f1d62d6b74c3..a693d34cddca 100644
--- a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/GrpcProvisioningStub.java
+++ b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/GrpcProvisioningStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcProvisioningStub extends ProvisioningStub {
   private static final MethodDescriptor<CreateInstanceRequest, Operation>
diff --git a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/GrpcRegistryCallableFactory.java b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/GrpcRegistryCallableFactory.java
index 12186c2094f8..4e8119694e8f 100644
--- a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/GrpcRegistryCallableFactory.java
+++ b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/GrpcRegistryCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRegistryCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/GrpcRegistryStub.java b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/GrpcRegistryStub.java
index 475aa2a02eff..86ff0aed0645 100644
--- a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/GrpcRegistryStub.java
+++ b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/GrpcRegistryStub.java
@@ -96,6 +96,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRegistryStub extends RegistryStub {
   private static final MethodDescriptor<ListApisRequest, ListApisResponse>
diff --git a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/HttpJsonProvisioningCallableFactory.java b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/HttpJsonProvisioningCallableFactory.java
index 896a82b0366e..7256553ca135 100644
--- a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/HttpJsonProvisioningCallableFactory.java
+++ b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/HttpJsonProvisioningCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProvisioningCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/HttpJsonProvisioningStub.java b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/HttpJsonProvisioningStub.java
index b9e77410aa00..20b06a3ddf24 100644
--- a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/HttpJsonProvisioningStub.java
+++ b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/HttpJsonProvisioningStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProvisioningStub extends ProvisioningStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/HttpJsonRegistryCallableFactory.java b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/HttpJsonRegistryCallableFactory.java
index fb291d22b0bc..32a0a8836ab0 100644
--- a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/HttpJsonRegistryCallableFactory.java
+++ b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/HttpJsonRegistryCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegistryCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/HttpJsonRegistryStub.java b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/HttpJsonRegistryStub.java
index d4f8154352a2..2c10e5e01cac 100644
--- a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/HttpJsonRegistryStub.java
+++ b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/HttpJsonRegistryStub.java
@@ -103,6 +103,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegistryStub extends RegistryStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/ProvisioningStub.java b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/ProvisioningStub.java
index be452f85b65c..5582f4cba627 100644
--- a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/ProvisioningStub.java
+++ b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/ProvisioningStub.java
@@ -39,6 +39,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ProvisioningStub implements BackgroundResource {
 
diff --git a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/ProvisioningStubSettings.java b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/ProvisioningStubSettings.java
index f19c65164ea3..2852cced6c38 100644
--- a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/ProvisioningStubSettings.java
+++ b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/ProvisioningStubSettings.java
@@ -73,6 +73,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ProvisioningStubSettings extends StubSettings<ProvisioningStubSettings> {
diff --git a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/RegistryStub.java b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/RegistryStub.java
index be9f49d2bbec..24c0315de7ec 100644
--- a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/RegistryStub.java
+++ b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/RegistryStub.java
@@ -86,6 +86,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -93,6 +94,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegistryStub implements BackgroundResource {
 
diff --git a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/RegistryStubSettings.java b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/RegistryStubSettings.java
index 921aec4c2ab2..6dbab1a3a783 100644
--- a/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/RegistryStubSettings.java
+++ b/java-apigee-registry/google-cloud-apigee-registry/src/main/java/com/google/cloud/apigeeregistry/v1/stub/RegistryStubSettings.java
@@ -118,6 +118,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -169,6 +170,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegistryStubSettings extends StubSettings<RegistryStubSettings> {
diff --git a/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ApiDeploymentName.java b/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ApiDeploymentName.java
index 7dd955748e55..a7d1a507b1ae 100644
--- a/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ApiDeploymentName.java
+++ b/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ApiDeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiDeploymentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_API_DEPLOYMENT =
diff --git a/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ApiName.java b/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ApiName.java
index 6341a19c05f1..bf073f019ddf 100644
--- a/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ApiName.java
+++ b/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ApiName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_API =
diff --git a/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ApiSpecName.java b/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ApiSpecName.java
index 1652ea966178..9acc0086b180 100644
--- a/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ApiSpecName.java
+++ b/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ApiSpecName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiSpecName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_API_VERSION_SPEC =
diff --git a/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ApiVersionName.java b/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ApiVersionName.java
index 2da2a2d5574b..c40d177a3867 100644
--- a/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ApiVersionName.java
+++ b/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ApiVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_API_VERSION =
diff --git a/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ArtifactName.java b/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ArtifactName.java
index 4e4b50e61ab8..79682ed497ab 100644
--- a/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ArtifactName.java
+++ b/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/ArtifactName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ArtifactName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ARTIFACT =
diff --git a/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/InstanceName.java b/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/InstanceName.java
index ec36ab0f357e..09ff45b2403a 100644
--- a/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/InstanceName.java
+++ b/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/LocationName.java b/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/LocationName.java
index 83ae5b3a6b58..6fdfaf751487 100644
--- a/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/LocationName.java
+++ b/java-apigee-registry/proto-google-cloud-apigee-registry-v1/src/main/java/com/google/cloud/apigeeregistry/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubClient.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubClient.java
index 4337699c133e..89935897834f 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubClient.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -941,6 +942,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiHubClient implements BackgroundResource {
   private final ApiHubSettings settings;
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubCollectClient.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubCollectClient.java
index f519c984aab8..5e1ab9edeba8 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubCollectClient.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubCollectClient.java
@@ -39,6 +39,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -160,6 +161,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiHubCollectClient implements BackgroundResource {
   private final ApiHubCollectSettings settings;
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubCollectSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubCollectSettings.java
index 32b700ca542e..71412afbe9ef 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubCollectSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubCollectSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiHubCollectSettings extends ClientSettings<ApiHubCollectSettings> {
 
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubCurateClient.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubCurateClient.java
index 450c8ddba2ff..0e2176f98077 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubCurateClient.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubCurateClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -240,6 +241,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiHubCurateClient implements BackgroundResource {
   private final ApiHubCurateSettings settings;
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubCurateSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubCurateSettings.java
index 432e2c2f4893..d721058cc1e5 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubCurateSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubCurateSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiHubCurateSettings extends ClientSettings<ApiHubCurateSettings> {
 
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubDependenciesClient.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubDependenciesClient.java
index 7f4435915fc1..30bcc644f2c7 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubDependenciesClient.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubDependenciesClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -243,6 +244,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiHubDependenciesClient implements BackgroundResource {
   private final ApiHubDependenciesSettings settings;
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubDependenciesSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubDependenciesSettings.java
index dcee7bdff3f3..4a0f073237d2 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubDependenciesSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubDependenciesSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiHubDependenciesSettings extends ClientSettings<ApiHubDependenciesSettings> {
 
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubDiscoveryClient.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubDiscoveryClient.java
index 7c0eaaf22c93..336a66baa621 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubDiscoveryClient.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubDiscoveryClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -219,6 +220,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiHubDiscoveryClient implements BackgroundResource {
   private final ApiHubDiscoverySettings settings;
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubDiscoverySettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubDiscoverySettings.java
index 79d93184e31b..bcccada89fc3 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubDiscoverySettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubDiscoverySettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiHubDiscoverySettings extends ClientSettings<ApiHubDiscoverySettings> {
 
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubPluginClient.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubPluginClient.java
index 2847deb77c4d..085ee27da6d5 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubPluginClient.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubPluginClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -420,6 +421,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiHubPluginClient implements BackgroundResource {
   private final ApiHubPluginSettings settings;
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubPluginSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubPluginSettings.java
index 189b96d162aa..dcd5d8c6bf0b 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubPluginSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubPluginSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiHubPluginSettings extends ClientSettings<ApiHubPluginSettings> {
 
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubSettings.java
index 63f993ee1fbd..01b9993981dc 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ApiHubSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -95,6 +96,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiHubSettings extends ClientSettings<ApiHubSettings> {
 
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/HostProjectRegistrationServiceClient.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/HostProjectRegistrationServiceClient.java
index 3c798c791949..0fb8738a5df9 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/HostProjectRegistrationServiceClient.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/HostProjectRegistrationServiceClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -202,6 +203,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HostProjectRegistrationServiceClient implements BackgroundResource {
   private final HostProjectRegistrationServiceSettings settings;
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/HostProjectRegistrationServiceSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/HostProjectRegistrationServiceSettings.java
index 60da568fff10..7d768680dcee 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/HostProjectRegistrationServiceSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/HostProjectRegistrationServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HostProjectRegistrationServiceSettings
     extends ClientSettings<HostProjectRegistrationServiceSettings> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/LintingServiceClient.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/LintingServiceClient.java
index d3c450f46fe1..d6b26d06555d 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/LintingServiceClient.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/LintingServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -207,6 +208,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LintingServiceClient implements BackgroundResource {
   private final LintingServiceSettings settings;
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/LintingServiceSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/LintingServiceSettings.java
index 1cf5f379cd9a..bc52faac59bc 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/LintingServiceSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/LintingServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LintingServiceSettings extends ClientSettings<LintingServiceSettings> {
 
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ProvisioningClient.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ProvisioningClient.java
index 8f89914982b7..28ee14812a35 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ProvisioningClient.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ProvisioningClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -220,6 +221,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProvisioningClient implements BackgroundResource {
   private final ProvisioningSettings settings;
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ProvisioningSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ProvisioningSettings.java
index 26e5ae89185a..9da5e76f9fb5 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ProvisioningSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/ProvisioningSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProvisioningSettings extends ClientSettings<ProvisioningSettings> {
 
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/RuntimeProjectAttachmentServiceClient.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/RuntimeProjectAttachmentServiceClient.java
index 937c175ddad5..db3fb9bb3701 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/RuntimeProjectAttachmentServiceClient.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/RuntimeProjectAttachmentServiceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -241,6 +242,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RuntimeProjectAttachmentServiceClient implements BackgroundResource {
   private final RuntimeProjectAttachmentServiceSettings settings;
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/RuntimeProjectAttachmentServiceSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/RuntimeProjectAttachmentServiceSettings.java
index 8255db2db3ef..b0c7e417c68a 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/RuntimeProjectAttachmentServiceSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/RuntimeProjectAttachmentServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RuntimeProjectAttachmentServiceSettings
     extends ClientSettings<RuntimeProjectAttachmentServiceSettings> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubCollectStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubCollectStub.java
index 9e2483f31664..31ec836e3374 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubCollectStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubCollectStub.java
@@ -31,6 +31,7 @@
 import com.google.cloud.location.Location;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ApiHubCollectStub implements BackgroundResource {
 
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubCollectStubSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubCollectStubSettings.java
index ec7c9c6df4d4..66cd67818510 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubCollectStubSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubCollectStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -138,6 +139,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ApiHubCollectStubSettings extends StubSettings<ApiHubCollectStubSettings> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubCurateStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubCurateStub.java
index 58bde7fab665..26fc08425c8d 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubCurateStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubCurateStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ApiHubCurateStub implements BackgroundResource {
 
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubCurateStubSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubCurateStubSettings.java
index dd7363d40e5d..e586ce43c202 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubCurateStubSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubCurateStubSettings.java
@@ -61,6 +61,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ApiHubCurateStubSettings extends StubSettings<ApiHubCurateStubSettings> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubDependenciesStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubDependenciesStub.java
index 6e64c0f6375f..4edbbf193383 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubDependenciesStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubDependenciesStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ApiHubDependenciesStub implements BackgroundResource {
 
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubDependenciesStubSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubDependenciesStubSettings.java
index 8c3b743304bd..adb71168184a 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubDependenciesStubSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubDependenciesStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ApiHubDependenciesStubSettings extends StubSettings<ApiHubDependenciesStubSettings> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubDiscoveryStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubDiscoveryStub.java
index 7fc6f283f874..65553fba1ff0 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubDiscoveryStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubDiscoveryStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ApiHubDiscoveryStub implements BackgroundResource {
 
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubDiscoveryStubSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubDiscoveryStubSettings.java
index ee872202e6f6..45eace811f67 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubDiscoveryStubSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubDiscoveryStubSettings.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ApiHubDiscoveryStubSettings extends StubSettings<ApiHubDiscoveryStubSettings> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubPluginStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubPluginStub.java
index 767ff5b31038..2b6993597e21 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubPluginStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubPluginStub.java
@@ -53,6 +53,7 @@
 import com.google.longrunning.Operation;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ApiHubPluginStub implements BackgroundResource {
 
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubPluginStubSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubPluginStubSettings.java
index abbdad25ce81..36310bc98195 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubPluginStubSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubPluginStubSettings.java
@@ -83,6 +83,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -160,6 +161,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ApiHubPluginStubSettings extends StubSettings<ApiHubPluginStubSettings> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubStub.java
index 87cbc6c52d57..7fcb15bdca48 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubStub.java
@@ -89,6 +89,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -96,6 +97,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ApiHubStub implements BackgroundResource {
 
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubStubSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubStubSettings.java
index 6239e2836b13..209ea1363c84 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubStubSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ApiHubStubSettings.java
@@ -118,6 +118,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -168,6 +169,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ApiHubStubSettings extends StubSettings<ApiHubStubSettings> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HostProjectRegistrationServiceStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HostProjectRegistrationServiceStub.java
index 909dd2a5dd30..779ddb6ccc27 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HostProjectRegistrationServiceStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HostProjectRegistrationServiceStub.java
@@ -31,6 +31,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class HostProjectRegistrationServiceStub implements BackgroundResource {
 
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HostProjectRegistrationServiceStubSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HostProjectRegistrationServiceStubSettings.java
index bf73b8cc9c0f..8a487c6c985a 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HostProjectRegistrationServiceStubSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HostProjectRegistrationServiceStubSettings.java
@@ -59,6 +59,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class HostProjectRegistrationServiceStubSettings
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCallableFactory.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCallableFactory.java
index f21349ed94bb..03a7df73d9fc 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCallableFactory.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApiHubCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCollectCallableFactory.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCollectCallableFactory.java
index 853317c229a3..e43b082f50ab 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCollectCallableFactory.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCollectCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApiHubCollectCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCollectStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCollectStub.java
index 88b65f768bf0..a521719783d1 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCollectStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCollectStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApiHubCollectStub extends ApiHubCollectStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCurateCallableFactory.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCurateCallableFactory.java
index 77ad786d86e5..2a7928b70033 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCurateCallableFactory.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCurateCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApiHubCurateCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCurateStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCurateStub.java
index c8288756eaad..9255b1aaaf76 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCurateStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubCurateStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApiHubCurateStub extends ApiHubCurateStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubDependenciesCallableFactory.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubDependenciesCallableFactory.java
index bd01d3a35ee8..971f565bba52 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubDependenciesCallableFactory.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubDependenciesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApiHubDependenciesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubDependenciesStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubDependenciesStub.java
index f5b775fac5c3..5716aed108f1 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubDependenciesStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubDependenciesStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApiHubDependenciesStub extends ApiHubDependenciesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubDiscoveryCallableFactory.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubDiscoveryCallableFactory.java
index 866c1a03344f..6fec3006b75e 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubDiscoveryCallableFactory.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubDiscoveryCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApiHubDiscoveryCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubDiscoveryStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubDiscoveryStub.java
index 2ee8c223c129..93b59875f452 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubDiscoveryStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubDiscoveryStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApiHubDiscoveryStub extends ApiHubDiscoveryStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubPluginCallableFactory.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubPluginCallableFactory.java
index 1f49a3fdfb54..a7e103349bd6 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubPluginCallableFactory.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubPluginCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApiHubPluginCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubPluginStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubPluginStub.java
index e58ac92ffbd5..eb8a5f91b2f5 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubPluginStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubPluginStub.java
@@ -73,6 +73,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -80,6 +81,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApiHubPluginStub extends ApiHubPluginStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubStub.java
index 4a8d4e2cbd11..512368c2fbe6 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonApiHubStub.java
@@ -106,6 +106,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApiHubStub extends ApiHubStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonHostProjectRegistrationServiceCallableFactory.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonHostProjectRegistrationServiceCallableFactory.java
index 9252699c64cf..176b6c4d4bf8 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonHostProjectRegistrationServiceCallableFactory.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonHostProjectRegistrationServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonHostProjectRegistrationServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonHostProjectRegistrationServiceStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonHostProjectRegistrationServiceStub.java
index 9562b08279e6..7aa663883a03 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonHostProjectRegistrationServiceStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonHostProjectRegistrationServiceStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonHostProjectRegistrationServiceStub extends HostProjectRegistrationServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonLintingServiceCallableFactory.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonLintingServiceCallableFactory.java
index e92c6282362b..d33573629748 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonLintingServiceCallableFactory.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonLintingServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLintingServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonLintingServiceStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonLintingServiceStub.java
index 71306974b2f5..e2ca6b88c165 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonLintingServiceStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonLintingServiceStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLintingServiceStub extends LintingServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonProvisioningCallableFactory.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonProvisioningCallableFactory.java
index 1df2bb0148ae..5ddc1336d07f 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonProvisioningCallableFactory.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonProvisioningCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProvisioningCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonProvisioningStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonProvisioningStub.java
index d4ea8e31cdd8..9ff3ed6935ad 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonProvisioningStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonProvisioningStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProvisioningStub extends ProvisioningStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonRuntimeProjectAttachmentServiceCallableFactory.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonRuntimeProjectAttachmentServiceCallableFactory.java
index 063eef46a88d..ac4460cfc8e2 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonRuntimeProjectAttachmentServiceCallableFactory.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonRuntimeProjectAttachmentServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRuntimeProjectAttachmentServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonRuntimeProjectAttachmentServiceStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonRuntimeProjectAttachmentServiceStub.java
index e3429409be98..5064a6c195bd 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonRuntimeProjectAttachmentServiceStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/HttpJsonRuntimeProjectAttachmentServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRuntimeProjectAttachmentServiceStub
     extends RuntimeProjectAttachmentServiceStub {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/LintingServiceStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/LintingServiceStub.java
index 25145cae7381..32adc9cc8c3a 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/LintingServiceStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/LintingServiceStub.java
@@ -32,6 +32,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LintingServiceStub implements BackgroundResource {
 
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/LintingServiceStubSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/LintingServiceStubSettings.java
index 68eb80945ca9..23b2fd1ffe22 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/LintingServiceStubSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/LintingServiceStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LintingServiceStubSettings extends StubSettings<LintingServiceStubSettings> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ProvisioningStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ProvisioningStub.java
index a7f27bf18400..1bf7cbf51b54 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ProvisioningStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ProvisioningStub.java
@@ -36,6 +36,7 @@
 import com.google.longrunning.Operation;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ProvisioningStub implements BackgroundResource {
 
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ProvisioningStubSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ProvisioningStubSettings.java
index bb1845de66b3..7a772229b902 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ProvisioningStubSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/ProvisioningStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -143,6 +144,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ProvisioningStubSettings extends StubSettings<ProvisioningStubSettings> {
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/RuntimeProjectAttachmentServiceStub.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/RuntimeProjectAttachmentServiceStub.java
index aa8a31463c97..a92b5cb71686 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/RuntimeProjectAttachmentServiceStub.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/RuntimeProjectAttachmentServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RuntimeProjectAttachmentServiceStub implements BackgroundResource {
 
diff --git a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/RuntimeProjectAttachmentServiceStubSettings.java b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/RuntimeProjectAttachmentServiceStubSettings.java
index f5c64cc6993b..398a27fd7c5d 100644
--- a/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/RuntimeProjectAttachmentServiceStubSettings.java
+++ b/java-apihub/google-cloud-apihub/src/main/java/com/google/cloud/apihub/v1/stub/RuntimeProjectAttachmentServiceStubSettings.java
@@ -63,6 +63,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RuntimeProjectAttachmentServiceStubSettings
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/ApiHubInstanceName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/ApiHubInstanceName.java
index 93e3ee62dca7..54422084e022 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/ApiHubInstanceName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/ApiHubInstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiHubInstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_API_HUB_INSTANCE =
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/ApiName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/ApiName.java
index 78dabf0d5a68..430629ce22d8 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/ApiName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/ApiName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_API =
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/ApiOperationName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/ApiOperationName.java
index 265bfbe01136..9b73d6e4e698 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/ApiOperationName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/ApiOperationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiOperationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_API_VERSION_OPERATION =
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/AttributeName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/AttributeName.java
index 4d76e6ae0151..65fcbdb5df9f 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/AttributeName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/AttributeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AttributeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ATTRIBUTE =
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/CurationName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/CurationName.java
index 3357d703a24f..256a6afd017c 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/CurationName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/CurationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CurationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CURATION =
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DefinitionName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DefinitionName.java
index 84317e8dbf9a..94395226a2b1 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DefinitionName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DefinitionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DefinitionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_API_VERSION_DEFINITION =
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DependencyName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DependencyName.java
index 4d4e14960680..93e5a00ad68a 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DependencyName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DependencyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DependencyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DEPENDENCY =
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DeploymentName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DeploymentName.java
index 683a2cdab802..bdd793237a27 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DeploymentName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DEPLOYMENT =
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DiscoveredApiObservationName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DiscoveredApiObservationName.java
index ff7154316db4..5c091ce3d0ce 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DiscoveredApiObservationName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DiscoveredApiObservationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DiscoveredApiObservationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DISCOVERED_API_OBSERVATION =
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DiscoveredApiOperationName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DiscoveredApiOperationName.java
index db3a09915444..23e94dff73f2 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DiscoveredApiOperationName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/DiscoveredApiOperationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DiscoveredApiOperationName implements ResourceName {
   private static final PathTemplate
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/ExternalApiName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/ExternalApiName.java
index 1c90bca48cf1..a9f31a4490b1 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/ExternalApiName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/ExternalApiName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExternalApiName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_EXTERNAL_API =
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/HostProjectRegistrationName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/HostProjectRegistrationName.java
index 3947928e7d79..d2e255b014db 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/HostProjectRegistrationName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/HostProjectRegistrationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HostProjectRegistrationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_HOST_PROJECT_REGISTRATION =
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/LocationName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/LocationName.java
index e654e9eeada4..afdc846f7f25 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/LocationName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/PluginInstanceName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/PluginInstanceName.java
index 574d9ed62606..d16edf3804e1 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/PluginInstanceName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/PluginInstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PluginInstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PLUGIN_INSTANCE =
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/PluginName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/PluginName.java
index 4b30e8c5297c..b3f090c15f0a 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/PluginName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/PluginName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PluginName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PLUGIN =
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/RuntimeProjectAttachmentName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/RuntimeProjectAttachmentName.java
index 9edc0ccf3b80..2f94a079d993 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/RuntimeProjectAttachmentName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/RuntimeProjectAttachmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RuntimeProjectAttachmentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RUNTIME_PROJECT_ATTACHMENT =
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/SpecName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/SpecName.java
index bad9576dad2b..d3d228a9be3e 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/SpecName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/SpecName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpecName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_API_VERSION_SPEC =
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/StyleGuideName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/StyleGuideName.java
index 47978cc714c2..e6cbd8ab5dcd 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/StyleGuideName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/StyleGuideName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StyleGuideName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PLUGIN =
diff --git a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/VersionName.java b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/VersionName.java
index efecb9275a8f..aba8bcb225cf 100644
--- a/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/VersionName.java
+++ b/java-apihub/proto-google-cloud-apihub-v1/src/main/java/com/google/cloud/apihub/v1/VersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_API_VERSION =
diff --git a/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/ApiKeysClient.java b/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/ApiKeysClient.java
index 5ecf8dc35bc2..71a9d453d086 100644
--- a/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/ApiKeysClient.java
+++ b/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/ApiKeysClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -274,6 +275,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiKeysClient implements BackgroundResource {
   private final ApiKeysSettings settings;
diff --git a/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/ApiKeysSettings.java b/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/ApiKeysSettings.java
index ba79b528d2b3..3fc448492d26 100644
--- a/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/ApiKeysSettings.java
+++ b/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/ApiKeysSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApiKeysSettings extends ClientSettings<ApiKeysSettings> {
 
diff --git a/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/ApiKeysStub.java b/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/ApiKeysStub.java
index 729871f6e3a4..f9ad42fbc06c 100644
--- a/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/ApiKeysStub.java
+++ b/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/ApiKeysStub.java
@@ -37,6 +37,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ApiKeysStub implements BackgroundResource {
 
diff --git a/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/ApiKeysStubSettings.java b/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/ApiKeysStubSettings.java
index 2d5f5e7b78a9..4555102d4be5 100644
--- a/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/ApiKeysStubSettings.java
+++ b/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/ApiKeysStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ApiKeysStubSettings extends StubSettings<ApiKeysStubSettings> {
diff --git a/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/GrpcApiKeysCallableFactory.java b/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/GrpcApiKeysCallableFactory.java
index 24dddf5b9034..3f4a3749f79c 100644
--- a/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/GrpcApiKeysCallableFactory.java
+++ b/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/GrpcApiKeysCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcApiKeysCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/GrpcApiKeysStub.java b/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/GrpcApiKeysStub.java
index afa43e0dd106..052167a3b81c 100644
--- a/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/GrpcApiKeysStub.java
+++ b/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/GrpcApiKeysStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcApiKeysStub extends ApiKeysStub {
   private static final MethodDescriptor<CreateKeyRequest, Operation> createKeyMethodDescriptor =
diff --git a/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/HttpJsonApiKeysCallableFactory.java b/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/HttpJsonApiKeysCallableFactory.java
index 8a2309df7d02..b5fea29bad34 100644
--- a/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/HttpJsonApiKeysCallableFactory.java
+++ b/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/HttpJsonApiKeysCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApiKeysCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/HttpJsonApiKeysStub.java b/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/HttpJsonApiKeysStub.java
index 0740b9389679..a5ab6c7f6c05 100644
--- a/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/HttpJsonApiKeysStub.java
+++ b/java-apikeys/google-cloud-apikeys/src/main/java/com/google/api/apikeys/v2/stub/HttpJsonApiKeysStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApiKeysStub extends ApiKeysStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-apikeys/proto-google-cloud-apikeys-v2/src/main/java/com/google/api/apikeys/v2/KeyName.java b/java-apikeys/proto-google-cloud-apikeys-v2/src/main/java/com/google/api/apikeys/v2/KeyName.java
index a19dbbc0b04c..b715c55d8af9 100644
--- a/java-apikeys/proto-google-cloud-apikeys-v2/src/main/java/com/google/api/apikeys/v2/KeyName.java
+++ b/java-apikeys/proto-google-cloud-apikeys-v2/src/main/java/com/google/api/apikeys/v2/KeyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class KeyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_KEY =
diff --git a/java-apikeys/proto-google-cloud-apikeys-v2/src/main/java/com/google/api/apikeys/v2/LocationName.java b/java-apikeys/proto-google-cloud-apikeys-v2/src/main/java/com/google/api/apikeys/v2/LocationName.java
index 4ab4457c2bc5..52c3ce0d1ad7 100644
--- a/java-apikeys/proto-google-cloud-apikeys-v2/src/main/java/com/google/api/apikeys/v2/LocationName.java
+++ b/java-apikeys/proto-google-cloud-apikeys-v2/src/main/java/com/google/api/apikeys/v2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/ApplicationsClient.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/ApplicationsClient.java
index 10f038400230..e904aa3c37ea 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/ApplicationsClient.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/ApplicationsClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -185,6 +186,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApplicationsClient implements BackgroundResource {
   private final ApplicationsSettings settings;
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/ApplicationsSettings.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/ApplicationsSettings.java
index 7622a38f2d81..1435c9b57df3 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/ApplicationsSettings.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/ApplicationsSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApplicationsSettings extends ClientSettings<ApplicationsSettings> {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/AuthorizedCertificatesClient.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/AuthorizedCertificatesClient.java
index 8fbe36cc5792..28c50869e78a 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/AuthorizedCertificatesClient.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/AuthorizedCertificatesClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -199,6 +200,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AuthorizedCertificatesClient implements BackgroundResource {
   private final AuthorizedCertificatesSettings settings;
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/AuthorizedCertificatesSettings.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/AuthorizedCertificatesSettings.java
index 72bb2b792f7b..99b0610a4ca4 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/AuthorizedCertificatesSettings.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/AuthorizedCertificatesSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AuthorizedCertificatesSettings extends ClientSettings<AuthorizedCertificatesSettings> {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/AuthorizedDomainsClient.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/AuthorizedDomainsClient.java
index 901ae9e6aebe..0a681f2cce74 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/AuthorizedDomainsClient.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/AuthorizedDomainsClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AuthorizedDomainsClient implements BackgroundResource {
   private final AuthorizedDomainsSettings settings;
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/AuthorizedDomainsSettings.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/AuthorizedDomainsSettings.java
index f338ad5135e0..377cfe1140b4 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/AuthorizedDomainsSettings.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/AuthorizedDomainsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AuthorizedDomainsSettings extends ClientSettings<AuthorizedDomainsSettings> {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/DomainMappingsClient.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/DomainMappingsClient.java
index 3dc98925c221..120d4d23e97d 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/DomainMappingsClient.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/DomainMappingsClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -197,6 +198,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DomainMappingsClient implements BackgroundResource {
   private final DomainMappingsSettings settings;
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/DomainMappingsSettings.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/DomainMappingsSettings.java
index 1985a30df92c..f17c508cbf2b 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/DomainMappingsSettings.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/DomainMappingsSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DomainMappingsSettings extends ClientSettings<DomainMappingsSettings> {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/FirewallClient.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/FirewallClient.java
index f582a4d59c2b..7ef3941019a4 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/FirewallClient.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/FirewallClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -215,6 +216,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FirewallClient implements BackgroundResource {
   private final FirewallSettings settings;
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/FirewallSettings.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/FirewallSettings.java
index 2f1fc7dc55e9..86973f4d0ada 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/FirewallSettings.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/FirewallSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FirewallSettings extends ClientSettings<FirewallSettings> {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/InstancesClient.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/InstancesClient.java
index 44d9ca504358..16f57845a3a0 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/InstancesClient.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/InstancesClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -184,6 +185,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstancesClient implements BackgroundResource {
   private final InstancesSettings settings;
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/InstancesSettings.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/InstancesSettings.java
index b57429bf4608..0630a5b1f10a 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/InstancesSettings.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/InstancesSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstancesSettings extends ClientSettings<InstancesSettings> {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/ServicesClient.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/ServicesClient.java
index fb425034cd64..5b115d9668b0 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/ServicesClient.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/ServicesClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -180,6 +181,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServicesClient implements BackgroundResource {
   private final ServicesSettings settings;
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/ServicesSettings.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/ServicesSettings.java
index e1f0c16b832e..6d1453cfd9d3 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/ServicesSettings.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/ServicesSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServicesSettings extends ClientSettings<ServicesSettings> {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/VersionsClient.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/VersionsClient.java
index f776c9c018c3..0def9c60684e 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/VersionsClient.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/VersionsClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -232,6 +233,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VersionsClient implements BackgroundResource {
   private final VersionsSettings settings;
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/VersionsSettings.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/VersionsSettings.java
index 2b47c04e5dce..eb4c42f297ff 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/VersionsSettings.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/VersionsSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VersionsSettings extends ClientSettings<VersionsSettings> {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/ApplicationsStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/ApplicationsStub.java
index 74cb0dfc8450..59ccebe1a77b 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/ApplicationsStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/ApplicationsStub.java
@@ -28,6 +28,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ApplicationsStub implements BackgroundResource {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/ApplicationsStubSettings.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/ApplicationsStubSettings.java
index 2cf9a1eaff90..16d0f9546060 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/ApplicationsStubSettings.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/ApplicationsStubSettings.java
@@ -55,6 +55,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ApplicationsStubSettings extends StubSettings<ApplicationsStubSettings> {
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/AuthorizedCertificatesStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/AuthorizedCertificatesStub.java
index f3e0e977eb3a..dde16ab7b334 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/AuthorizedCertificatesStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/AuthorizedCertificatesStub.java
@@ -29,6 +29,7 @@
 import com.google.appengine.v1.UpdateAuthorizedCertificateRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AuthorizedCertificatesStub implements BackgroundResource {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/AuthorizedCertificatesStubSettings.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/AuthorizedCertificatesStubSettings.java
index 982f8e89d141..7064a3d1b4f9 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/AuthorizedCertificatesStubSettings.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/AuthorizedCertificatesStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AuthorizedCertificatesStubSettings
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/AuthorizedDomainsStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/AuthorizedDomainsStub.java
index 4d10655a1bf5..78e054027a3c 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/AuthorizedDomainsStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/AuthorizedDomainsStub.java
@@ -23,6 +23,7 @@
 import com.google.appengine.v1.ListAuthorizedDomainsRequest;
 import com.google.appengine.v1.ListAuthorizedDomainsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AuthorizedDomainsStub implements BackgroundResource {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/AuthorizedDomainsStubSettings.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/AuthorizedDomainsStubSettings.java
index f599b571d212..91a138f35998 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/AuthorizedDomainsStubSettings.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/AuthorizedDomainsStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AuthorizedDomainsStubSettings extends StubSettings<AuthorizedDomainsStubSettings> {
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/DomainMappingsStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/DomainMappingsStub.java
index 5dc60e3ecada..b1fe402a0ccd 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/DomainMappingsStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/DomainMappingsStub.java
@@ -33,6 +33,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DomainMappingsStub implements BackgroundResource {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/DomainMappingsStubSettings.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/DomainMappingsStubSettings.java
index 17aa1a925d22..debeac6f00fe 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/DomainMappingsStubSettings.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/DomainMappingsStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DomainMappingsStubSettings extends StubSettings<DomainMappingsStubSettings> {
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/FirewallStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/FirewallStub.java
index 37438d6eab60..747c56b6ee3a 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/FirewallStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/FirewallStub.java
@@ -31,6 +31,7 @@
 import com.google.appengine.v1.firewall.FirewallRule;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FirewallStub implements BackgroundResource {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/FirewallStubSettings.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/FirewallStubSettings.java
index 007fbc8e0e96..f0898c43be03 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/FirewallStubSettings.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/FirewallStubSettings.java
@@ -63,6 +63,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FirewallStubSettings extends StubSettings<FirewallStubSettings> {
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcApplicationsCallableFactory.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcApplicationsCallableFactory.java
index 158fd240c89c..811cdb783814 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcApplicationsCallableFactory.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcApplicationsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcApplicationsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcApplicationsStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcApplicationsStub.java
index e635db9a07fc..22334c66df8c 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcApplicationsStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcApplicationsStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcApplicationsStub extends ApplicationsStub {
   private static final MethodDescriptor<GetApplicationRequest, Application>
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcAuthorizedCertificatesCallableFactory.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcAuthorizedCertificatesCallableFactory.java
index 9e66130d4d60..f545194c0124 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcAuthorizedCertificatesCallableFactory.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcAuthorizedCertificatesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAuthorizedCertificatesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcAuthorizedCertificatesStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcAuthorizedCertificatesStub.java
index a4a5b2c82b26..1745286cbf42 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcAuthorizedCertificatesStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcAuthorizedCertificatesStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAuthorizedCertificatesStub extends AuthorizedCertificatesStub {
   private static final MethodDescriptor<
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcAuthorizedDomainsCallableFactory.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcAuthorizedDomainsCallableFactory.java
index cf022dee4a45..5f6fbfcca8e0 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcAuthorizedDomainsCallableFactory.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcAuthorizedDomainsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAuthorizedDomainsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcAuthorizedDomainsStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcAuthorizedDomainsStub.java
index 72e05d2e4bbc..6e6254191943 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcAuthorizedDomainsStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcAuthorizedDomainsStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAuthorizedDomainsStub extends AuthorizedDomainsStub {
   private static final MethodDescriptor<ListAuthorizedDomainsRequest, ListAuthorizedDomainsResponse>
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcDomainMappingsCallableFactory.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcDomainMappingsCallableFactory.java
index dbf5eb1becd5..f39836a5ca5c 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcDomainMappingsCallableFactory.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcDomainMappingsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDomainMappingsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcDomainMappingsStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcDomainMappingsStub.java
index 0c236b782066..34979120e7a9 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcDomainMappingsStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcDomainMappingsStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDomainMappingsStub extends DomainMappingsStub {
   private static final MethodDescriptor<ListDomainMappingsRequest, ListDomainMappingsResponse>
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcFirewallCallableFactory.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcFirewallCallableFactory.java
index 754b91b93202..84fcbbfaa8ce 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcFirewallCallableFactory.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcFirewallCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFirewallCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcFirewallStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcFirewallStub.java
index dfd5e125426d..664de6e03e9f 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcFirewallStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcFirewallStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFirewallStub extends FirewallStub {
   private static final MethodDescriptor<ListIngressRulesRequest, ListIngressRulesResponse>
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcInstancesCallableFactory.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcInstancesCallableFactory.java
index dd1539fd6fb1..891a369c09d4 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcInstancesCallableFactory.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcInstancesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcInstancesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcInstancesStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcInstancesStub.java
index 5774efb3a7ea..cc189bf67518 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcInstancesStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcInstancesStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcInstancesStub extends InstancesStub {
   private static final MethodDescriptor<ListInstancesRequest, ListInstancesResponse>
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcServicesCallableFactory.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcServicesCallableFactory.java
index 269b89565297..906fe368f525 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcServicesCallableFactory.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcServicesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServicesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcServicesStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcServicesStub.java
index 381dba0bbcfc..2c77b5ec2cd6 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcServicesStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcServicesStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServicesStub extends ServicesStub {
   private static final MethodDescriptor<ListServicesRequest, ListServicesResponse>
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcVersionsCallableFactory.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcVersionsCallableFactory.java
index 4a1da01a023c..bb8196639d6c 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcVersionsCallableFactory.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcVersionsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVersionsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcVersionsStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcVersionsStub.java
index 5b4dbde03fca..fb74cc5e6d02 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcVersionsStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/GrpcVersionsStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVersionsStub extends VersionsStub {
   private static final MethodDescriptor<ListVersionsRequest, ListVersionsResponse>
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonApplicationsCallableFactory.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonApplicationsCallableFactory.java
index 0ebe8fb34bac..6df981d0a6a9 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonApplicationsCallableFactory.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonApplicationsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApplicationsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonApplicationsStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonApplicationsStub.java
index e01dbf7e3dc4..2fd5324f0e94 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonApplicationsStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonApplicationsStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonApplicationsStub extends ApplicationsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonAuthorizedCertificatesCallableFactory.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonAuthorizedCertificatesCallableFactory.java
index 3abcff6f3479..e3ef7a8554bc 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonAuthorizedCertificatesCallableFactory.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonAuthorizedCertificatesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAuthorizedCertificatesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonAuthorizedCertificatesStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonAuthorizedCertificatesStub.java
index 4903f195f45e..4984f5a67415 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonAuthorizedCertificatesStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonAuthorizedCertificatesStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAuthorizedCertificatesStub extends AuthorizedCertificatesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonAuthorizedDomainsCallableFactory.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonAuthorizedDomainsCallableFactory.java
index 85ea52a6b1de..e14a46d1df30 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonAuthorizedDomainsCallableFactory.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonAuthorizedDomainsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAuthorizedDomainsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonAuthorizedDomainsStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonAuthorizedDomainsStub.java
index 621647ea8ce6..efa899dcdbed 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonAuthorizedDomainsStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonAuthorizedDomainsStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAuthorizedDomainsStub extends AuthorizedDomainsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonDomainMappingsCallableFactory.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonDomainMappingsCallableFactory.java
index 341c3be724e5..fb2fd2fffd26 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonDomainMappingsCallableFactory.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonDomainMappingsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDomainMappingsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonDomainMappingsStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonDomainMappingsStub.java
index 74697ab28d96..f64f6227096c 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonDomainMappingsStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonDomainMappingsStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDomainMappingsStub extends DomainMappingsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonFirewallCallableFactory.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonFirewallCallableFactory.java
index 2fcc994996c3..79cdc73d8c53 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonFirewallCallableFactory.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonFirewallCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFirewallCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonFirewallStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonFirewallStub.java
index 6fe365cc0f4d..9abf029f1eaa 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonFirewallStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonFirewallStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFirewallStub extends FirewallStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonInstancesCallableFactory.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonInstancesCallableFactory.java
index 712836ce59cd..8380b89509e5 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonInstancesCallableFactory.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonInstancesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstancesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonInstancesStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonInstancesStub.java
index 7b8c846de4e5..86bb360e009f 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonInstancesStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonInstancesStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstancesStub extends InstancesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonServicesCallableFactory.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonServicesCallableFactory.java
index ce78e8f5ac87..c41a3db2ac72 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonServicesCallableFactory.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonServicesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServicesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonServicesStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonServicesStub.java
index 6c5a9b182062..0f7aa930a3e5 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonServicesStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonServicesStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServicesStub extends ServicesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonVersionsCallableFactory.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonVersionsCallableFactory.java
index ba47d7e64336..4b2f1d10ff80 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonVersionsCallableFactory.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonVersionsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVersionsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonVersionsStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonVersionsStub.java
index 5037c3350de5..d57eacaab64f 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonVersionsStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/HttpJsonVersionsStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVersionsStub extends VersionsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/InstancesStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/InstancesStub.java
index 3a752301f35f..2f049bb4dac5 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/InstancesStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/InstancesStub.java
@@ -32,6 +32,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InstancesStub implements BackgroundResource {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/InstancesStubSettings.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/InstancesStubSettings.java
index 469ffcf4d200..b0d5946b7b29 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/InstancesStubSettings.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/InstancesStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InstancesStubSettings extends StubSettings<InstancesStubSettings> {
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/ServicesStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/ServicesStub.java
index 4c65e471d3b3..cabc6aa0321e 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/ServicesStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/ServicesStub.java
@@ -32,6 +32,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ServicesStub implements BackgroundResource {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/ServicesStubSettings.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/ServicesStubSettings.java
index 5d8af6c9fae7..3ba55bdef100 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/ServicesStubSettings.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/ServicesStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ServicesStubSettings extends StubSettings<ServicesStubSettings> {
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/VersionsStub.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/VersionsStub.java
index fdf9e8dfdbf8..252732651627 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/VersionsStub.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/VersionsStub.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class VersionsStub implements BackgroundResource {
 
diff --git a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/VersionsStubSettings.java b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/VersionsStubSettings.java
index 447ef6321b4d..28ee30e4c8e8 100644
--- a/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/VersionsStubSettings.java
+++ b/java-appengine-admin/google-cloud-appengine-admin/src/main/java/com/google/appengine/v1/stub/VersionsStubSettings.java
@@ -68,6 +68,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -143,6 +144,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class VersionsStubSettings extends StubSettings<VersionsStubSettings> {
diff --git a/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/AppHubClient.java b/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/AppHubClient.java
index 42b355511423..efbbedf43fd4 100644
--- a/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/AppHubClient.java
+++ b/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/AppHubClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -731,6 +732,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppHubClient implements BackgroundResource {
   private final AppHubSettings settings;
diff --git a/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/AppHubSettings.java b/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/AppHubSettings.java
index f9b8aed9316e..f3f52cdc8bdd 100644
--- a/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/AppHubSettings.java
+++ b/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/AppHubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppHubSettings extends ClientSettings<AppHubSettings> {
 
diff --git a/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/AppHubStub.java b/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/AppHubStub.java
index ee2749fb579f..672f18022447 100644
--- a/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/AppHubStub.java
+++ b/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/AppHubStub.java
@@ -84,6 +84,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AppHubStub implements BackgroundResource {
 
diff --git a/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/AppHubStubSettings.java b/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/AppHubStubSettings.java
index 653e34c998dc..3c05858b0394 100644
--- a/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/AppHubStubSettings.java
+++ b/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/AppHubStubSettings.java
@@ -118,6 +118,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -193,6 +194,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AppHubStubSettings extends StubSettings<AppHubStubSettings> {
diff --git a/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/GrpcAppHubCallableFactory.java b/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/GrpcAppHubCallableFactory.java
index 9e2c2e471efb..ec3813c3ac63 100644
--- a/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/GrpcAppHubCallableFactory.java
+++ b/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/GrpcAppHubCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAppHubCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/GrpcAppHubStub.java b/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/GrpcAppHubStub.java
index fc60d0e08f46..60224dfb26db 100644
--- a/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/GrpcAppHubStub.java
+++ b/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/GrpcAppHubStub.java
@@ -93,6 +93,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAppHubStub extends AppHubStub {
   private static final MethodDescriptor<
diff --git a/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/HttpJsonAppHubCallableFactory.java b/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/HttpJsonAppHubCallableFactory.java
index 9ad81edde7b1..3ad00826d77e 100644
--- a/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/HttpJsonAppHubCallableFactory.java
+++ b/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/HttpJsonAppHubCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAppHubCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/HttpJsonAppHubStub.java b/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/HttpJsonAppHubStub.java
index 016aca3bf0c1..d5aeadc04253 100644
--- a/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/HttpJsonAppHubStub.java
+++ b/java-apphub/google-cloud-apphub/src/main/java/com/google/cloud/apphub/v1/stub/HttpJsonAppHubStub.java
@@ -104,6 +104,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAppHubStub extends AppHubStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/ApplicationName.java b/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/ApplicationName.java
index e15a5219e718..053cb2a8040f 100644
--- a/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/ApplicationName.java
+++ b/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/ApplicationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApplicationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APPLICATION =
diff --git a/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/DiscoveredServiceName.java b/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/DiscoveredServiceName.java
index 2c3e5a702504..688cdf6d289d 100644
--- a/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/DiscoveredServiceName.java
+++ b/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/DiscoveredServiceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DiscoveredServiceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DISCOVERED_SERVICE =
diff --git a/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/DiscoveredWorkloadName.java b/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/DiscoveredWorkloadName.java
index 06ad048716ca..db89381488c7 100644
--- a/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/DiscoveredWorkloadName.java
+++ b/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/DiscoveredWorkloadName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DiscoveredWorkloadName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DISCOVERED_WORKLOAD =
diff --git a/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/LocationName.java b/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/LocationName.java
index 0263c73a2a60..2940bdbb867d 100644
--- a/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/LocationName.java
+++ b/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/ServiceName.java b/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/ServiceName.java
index 66f943ee6582..30addc1140cd 100644
--- a/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/ServiceName.java
+++ b/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/ServiceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APPLICATION_SERVICE =
diff --git a/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/ServiceProjectAttachmentName.java b/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/ServiceProjectAttachmentName.java
index 8818c2d6285c..2a0d3e3265bb 100644
--- a/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/ServiceProjectAttachmentName.java
+++ b/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/ServiceProjectAttachmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceProjectAttachmentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE_PROJECT_ATTACHMENT =
diff --git a/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/WorkloadName.java b/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/WorkloadName.java
index 59646ff28b62..c73e034289ac 100644
--- a/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/WorkloadName.java
+++ b/java-apphub/proto-google-cloud-apphub-v1/src/main/java/com/google/cloud/apphub/v1/WorkloadName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkloadName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APPLICATION_WORKLOAD =
diff --git a/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/AppOptimizeClient.java b/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/AppOptimizeClient.java
index e0be5f8de406..03aad04b8c2e 100644
--- a/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/AppOptimizeClient.java
+++ b/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/AppOptimizeClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -257,6 +258,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AppOptimizeClient implements BackgroundResource {
diff --git a/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/AppOptimizeSettings.java b/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/AppOptimizeSettings.java
index fc80fc8e8697..2fab844d61c2 100644
--- a/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/AppOptimizeSettings.java
+++ b/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/AppOptimizeSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AppOptimizeSettings extends ClientSettings<AppOptimizeSettings> {
diff --git a/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/AppOptimizeStub.java b/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/AppOptimizeStub.java
index 6fa6ef94c8e1..de5fe55c05a0 100644
--- a/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/AppOptimizeStub.java
+++ b/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/AppOptimizeStub.java
@@ -41,6 +41,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AppOptimizeStub implements BackgroundResource {
diff --git a/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/AppOptimizeStubSettings.java b/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/AppOptimizeStubSettings.java
index c8729278e42c..0c4c2e2ef6b0 100644
--- a/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/AppOptimizeStubSettings.java
+++ b/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/AppOptimizeStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/GrpcAppOptimizeCallableFactory.java b/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/GrpcAppOptimizeCallableFactory.java
index c09b5364d2e0..de6d0f63cd03 100644
--- a/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/GrpcAppOptimizeCallableFactory.java
+++ b/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/GrpcAppOptimizeCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAppOptimizeCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/GrpcAppOptimizeStub.java b/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/GrpcAppOptimizeStub.java
index cccac7b588b8..707abdc7bc3a 100644
--- a/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/GrpcAppOptimizeStub.java
+++ b/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/GrpcAppOptimizeStub.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAppOptimizeStub extends AppOptimizeStub {
diff --git a/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/HttpJsonAppOptimizeCallableFactory.java b/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/HttpJsonAppOptimizeCallableFactory.java
index 2930e12d4744..d3c32f475ee0 100644
--- a/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/HttpJsonAppOptimizeCallableFactory.java
+++ b/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/HttpJsonAppOptimizeCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAppOptimizeCallableFactory
diff --git a/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/HttpJsonAppOptimizeStub.java b/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/HttpJsonAppOptimizeStub.java
index 7c687236c3c5..b7692c1eedfe 100644
--- a/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/HttpJsonAppOptimizeStub.java
+++ b/java-appoptimize/google-cloud-appoptimize/src/main/java/com/google/cloud/appoptimize/v1beta/stub/HttpJsonAppOptimizeStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAppOptimizeStub extends AppOptimizeStub {
diff --git a/java-appoptimize/proto-google-cloud-appoptimize-v1beta/src/main/java/com/google/cloud/appoptimize/v1beta/LocationName.java b/java-appoptimize/proto-google-cloud-appoptimize-v1beta/src/main/java/com/google/cloud/appoptimize/v1beta/LocationName.java
index 3db54c6d3ab8..dd9bcb740f32 100644
--- a/java-appoptimize/proto-google-cloud-appoptimize-v1beta/src/main/java/com/google/cloud/appoptimize/v1beta/LocationName.java
+++ b/java-appoptimize/proto-google-cloud-appoptimize-v1beta/src/main/java/com/google/cloud/appoptimize/v1beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-appoptimize/proto-google-cloud-appoptimize-v1beta/src/main/java/com/google/cloud/appoptimize/v1beta/ReportName.java b/java-appoptimize/proto-google-cloud-appoptimize-v1beta/src/main/java/com/google/cloud/appoptimize/v1beta/ReportName.java
index 22393f79582f..ee9f734e42e8 100644
--- a/java-appoptimize/proto-google-cloud-appoptimize-v1beta/src/main/java/com/google/cloud/appoptimize/v1beta/ReportName.java
+++ b/java-appoptimize/proto-google-cloud-appoptimize-v1beta/src/main/java/com/google/cloud/appoptimize/v1beta/ReportName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReportName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPORT =
diff --git a/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/TablesServiceClient.java b/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/TablesServiceClient.java
index 2544b056bb98..18cc3528d8f4 100644
--- a/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/TablesServiceClient.java
+++ b/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/TablesServiceClient.java
@@ -57,6 +57,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -355,6 +356,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TablesServiceClient implements BackgroundResource {
diff --git a/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/TablesServiceSettings.java b/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/TablesServiceSettings.java
index e460ebf047ae..e5460f891585 100644
--- a/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/TablesServiceSettings.java
+++ b/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/TablesServiceSettings.java
@@ -57,6 +57,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TablesServiceSettings extends ClientSettings<TablesServiceSettings> {
diff --git a/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/GrpcTablesServiceCallableFactory.java b/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/GrpcTablesServiceCallableFactory.java
index a3a6935ec34d..f2b2ebcaf764 100644
--- a/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/GrpcTablesServiceCallableFactory.java
+++ b/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/GrpcTablesServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTablesServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/GrpcTablesServiceStub.java b/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/GrpcTablesServiceStub.java
index 469f97f3b869..18c332e417d0 100644
--- a/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/GrpcTablesServiceStub.java
+++ b/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/GrpcTablesServiceStub.java
@@ -55,6 +55,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTablesServiceStub extends TablesServiceStub {
diff --git a/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/HttpJsonTablesServiceCallableFactory.java b/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/HttpJsonTablesServiceCallableFactory.java
index 151a18ea63c4..49a66a8abdf4 100644
--- a/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/HttpJsonTablesServiceCallableFactory.java
+++ b/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/HttpJsonTablesServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTablesServiceCallableFactory
diff --git a/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/HttpJsonTablesServiceStub.java b/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/HttpJsonTablesServiceStub.java
index ee352424c5cf..ece30dae6209 100644
--- a/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/HttpJsonTablesServiceStub.java
+++ b/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/HttpJsonTablesServiceStub.java
@@ -62,6 +62,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTablesServiceStub extends TablesServiceStub {
diff --git a/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/TablesServiceStub.java b/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/TablesServiceStub.java
index 5f080708ae55..70ecb355492b 100644
--- a/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/TablesServiceStub.java
+++ b/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/TablesServiceStub.java
@@ -45,6 +45,7 @@
 import com.google.area120.tables.v1alpha1.Workspace;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class TablesServiceStub implements BackgroundResource {
diff --git a/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/TablesServiceStubSettings.java b/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/TablesServiceStubSettings.java
index 55005e50c851..f12af7d6da80 100644
--- a/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/TablesServiceStubSettings.java
+++ b/java-area120-tables/google-area120-tables/src/main/java/com/google/area120/tables/v1alpha/stub/TablesServiceStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-area120-tables/proto-google-area120-tables-v1alpha1/src/main/java/com/google/area120/tables/v1alpha1/RowName.java b/java-area120-tables/proto-google-area120-tables-v1alpha1/src/main/java/com/google/area120/tables/v1alpha1/RowName.java
index a7725913c162..8e21f6cec32b 100644
--- a/java-area120-tables/proto-google-area120-tables-v1alpha1/src/main/java/com/google/area120/tables/v1alpha1/RowName.java
+++ b/java-area120-tables/proto-google-area120-tables-v1alpha1/src/main/java/com/google/area120/tables/v1alpha1/RowName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RowName implements ResourceName {
   private static final PathTemplate TABLE_ROW =
diff --git a/java-area120-tables/proto-google-area120-tables-v1alpha1/src/main/java/com/google/area120/tables/v1alpha1/TableName.java b/java-area120-tables/proto-google-area120-tables-v1alpha1/src/main/java/com/google/area120/tables/v1alpha1/TableName.java
index df6aed77e4cf..654cbbecb848 100644
--- a/java-area120-tables/proto-google-area120-tables-v1alpha1/src/main/java/com/google/area120/tables/v1alpha1/TableName.java
+++ b/java-area120-tables/proto-google-area120-tables-v1alpha1/src/main/java/com/google/area120/tables/v1alpha1/TableName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TableName implements ResourceName {
   private static final PathTemplate TABLE = PathTemplate.createWithoutUrlEncoding("tables/{table}");
diff --git a/java-area120-tables/proto-google-area120-tables-v1alpha1/src/main/java/com/google/area120/tables/v1alpha1/WorkspaceName.java b/java-area120-tables/proto-google-area120-tables-v1alpha1/src/main/java/com/google/area120/tables/v1alpha1/WorkspaceName.java
index 9daab0f1246b..d34918dc3cb4 100644
--- a/java-area120-tables/proto-google-area120-tables-v1alpha1/src/main/java/com/google/area120/tables/v1alpha1/WorkspaceName.java
+++ b/java-area120-tables/proto-google-area120-tables-v1alpha1/src/main/java/com/google/area120/tables/v1alpha1/WorkspaceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkspaceName implements ResourceName {
   private static final PathTemplate WORKSPACE =
diff --git a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/ArtifactRegistryClient.java b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/ArtifactRegistryClient.java
index a62590d334a9..d83b7f4df995 100644
--- a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/ArtifactRegistryClient.java
+++ b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/ArtifactRegistryClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1106,6 +1107,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ArtifactRegistryClient implements BackgroundResource {
   private final ArtifactRegistrySettings settings;
diff --git a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/ArtifactRegistrySettings.java b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/ArtifactRegistrySettings.java
index df646b0c4787..61079a53b441 100644
--- a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/ArtifactRegistrySettings.java
+++ b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/ArtifactRegistrySettings.java
@@ -57,6 +57,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -135,6 +136,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ArtifactRegistrySettings extends ClientSettings<ArtifactRegistrySettings> {
 
diff --git a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/ArtifactRegistryStub.java b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/ArtifactRegistryStub.java
index 71f478bb1e29..28c364dd56be 100644
--- a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/ArtifactRegistryStub.java
+++ b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/ArtifactRegistryStub.java
@@ -124,6 +124,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ArtifactRegistryStub implements BackgroundResource {
 
diff --git a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/ArtifactRegistryStubSettings.java b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/ArtifactRegistryStubSettings.java
index c287c62d3454..9a1d71566e0a 100644
--- a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/ArtifactRegistryStubSettings.java
+++ b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/ArtifactRegistryStubSettings.java
@@ -158,6 +158,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -236,6 +237,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ArtifactRegistryStubSettings extends StubSettings<ArtifactRegistryStubSettings> {
diff --git a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/GrpcArtifactRegistryCallableFactory.java b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/GrpcArtifactRegistryCallableFactory.java
index f1559c5d473a..6779c4b23875 100644
--- a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/GrpcArtifactRegistryCallableFactory.java
+++ b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/GrpcArtifactRegistryCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcArtifactRegistryCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/GrpcArtifactRegistryStub.java b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/GrpcArtifactRegistryStub.java
index a04352730230..d51d38adaf13 100644
--- a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/GrpcArtifactRegistryStub.java
+++ b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/GrpcArtifactRegistryStub.java
@@ -133,6 +133,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -140,6 +141,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcArtifactRegistryStub extends ArtifactRegistryStub {
   private static final MethodDescriptor<ListDockerImagesRequest, ListDockerImagesResponse>
diff --git a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/HttpJsonArtifactRegistryCallableFactory.java b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/HttpJsonArtifactRegistryCallableFactory.java
index 973bf4fc8bb0..f67ca45c8463 100644
--- a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/HttpJsonArtifactRegistryCallableFactory.java
+++ b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/HttpJsonArtifactRegistryCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonArtifactRegistryCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/HttpJsonArtifactRegistryStub.java b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/HttpJsonArtifactRegistryStub.java
index 1191f8b1e84b..d54b35efa067 100644
--- a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/HttpJsonArtifactRegistryStub.java
+++ b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1/stub/HttpJsonArtifactRegistryStub.java
@@ -144,6 +144,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonArtifactRegistryStub extends ArtifactRegistryStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/ArtifactRegistryClient.java b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/ArtifactRegistryClient.java
index a3b081c2f004..f842043dc5eb 100644
--- a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/ArtifactRegistryClient.java
+++ b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/ArtifactRegistryClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -624,6 +625,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ArtifactRegistryClient implements BackgroundResource {
diff --git a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/ArtifactRegistrySettings.java b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/ArtifactRegistrySettings.java
index e4f4b27b0352..810f13c06956 100644
--- a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/ArtifactRegistrySettings.java
+++ b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/ArtifactRegistrySettings.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ArtifactRegistrySettings extends ClientSettings<ArtifactRegistrySettings> {
diff --git a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/ArtifactRegistryStub.java b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/ArtifactRegistryStub.java
index e5f4895b5671..a01b1ee27459 100644
--- a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/ArtifactRegistryStub.java
+++ b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/ArtifactRegistryStub.java
@@ -78,6 +78,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ArtifactRegistryStub implements BackgroundResource {
diff --git a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/ArtifactRegistryStubSettings.java b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/ArtifactRegistryStubSettings.java
index 1a543dd095f9..61a3d123a0ff 100644
--- a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/ArtifactRegistryStubSettings.java
+++ b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/ArtifactRegistryStubSettings.java
@@ -111,6 +111,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -189,6 +190,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/GrpcArtifactRegistryCallableFactory.java b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/GrpcArtifactRegistryCallableFactory.java
index bcc7fa5bf0d5..cb2e6555cba8 100644
--- a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/GrpcArtifactRegistryCallableFactory.java
+++ b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/GrpcArtifactRegistryCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcArtifactRegistryCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/GrpcArtifactRegistryStub.java b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/GrpcArtifactRegistryStub.java
index f403163f828b..12eb374e3431 100644
--- a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/GrpcArtifactRegistryStub.java
+++ b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/GrpcArtifactRegistryStub.java
@@ -87,6 +87,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -94,6 +95,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcArtifactRegistryStub extends ArtifactRegistryStub {
diff --git a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/HttpJsonArtifactRegistryCallableFactory.java b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/HttpJsonArtifactRegistryCallableFactory.java
index c8afaaf1126b..56f18d932364 100644
--- a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/HttpJsonArtifactRegistryCallableFactory.java
+++ b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/HttpJsonArtifactRegistryCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonArtifactRegistryCallableFactory
diff --git a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/HttpJsonArtifactRegistryStub.java b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/HttpJsonArtifactRegistryStub.java
index 322170f8006a..aed989c3d4e0 100644
--- a/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/HttpJsonArtifactRegistryStub.java
+++ b/java-artifact-registry/google-cloud-artifact-registry/src/main/java/com/google/devtools/artifactregistry/v1beta2/stub/HttpJsonArtifactRegistryStub.java
@@ -98,6 +98,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -105,6 +106,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonArtifactRegistryStub extends ArtifactRegistryStub {
diff --git a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/AttachmentName.java b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/AttachmentName.java
index fdcfc5f09ea7..0fd49054078a 100644
--- a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/AttachmentName.java
+++ b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/AttachmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AttachmentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_ATTACHMENT =
diff --git a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/DockerImageName.java b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/DockerImageName.java
index 3057dc51f9a8..5a71b80e8bf6 100644
--- a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/DockerImageName.java
+++ b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/DockerImageName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DockerImageName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_DOCKER_IMAGE =
diff --git a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/FileName.java b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/FileName.java
index 5f4e570e6330..77077e827b03 100644
--- a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/FileName.java
+++ b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/FileName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FileName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_FILE =
diff --git a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/LocationName.java b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/LocationName.java
index ec8823534835..20ad3a290969 100644
--- a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/LocationName.java
+++ b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/MavenArtifactName.java b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/MavenArtifactName.java
index c1c7935e7728..9f1169c93959 100644
--- a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/MavenArtifactName.java
+++ b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/MavenArtifactName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MavenArtifactName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_MAVEN_ARTIFACT =
diff --git a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/NpmPackageName.java b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/NpmPackageName.java
index 60525a2b446c..87c1b24eefac 100644
--- a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/NpmPackageName.java
+++ b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/NpmPackageName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NpmPackageName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_NPM_PACKAGE =
diff --git a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/PackageName.java b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/PackageName.java
index 1e1acfe453a0..5b0a87887613 100644
--- a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/PackageName.java
+++ b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/PackageName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PackageName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_PACKAGE =
diff --git a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/ProjectSettingsName.java b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/ProjectSettingsName.java
index ffd1fdbea362..c3752938eded 100644
--- a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/ProjectSettingsName.java
+++ b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/ProjectSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectSettingsName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/PythonPackageName.java b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/PythonPackageName.java
index 42424e71d544..cd7b917a7a17 100644
--- a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/PythonPackageName.java
+++ b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/PythonPackageName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PythonPackageName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_PYTHON_PACKAGE =
diff --git a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/RepositoryName.java b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/RepositoryName.java
index fb4c634fb8c9..a2c598f8d8cc 100644
--- a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/RepositoryName.java
+++ b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/RepositoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RepositoryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY =
diff --git a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/RuleName.java b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/RuleName.java
index 07f94ee79608..d1c784ec2ca0 100644
--- a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/RuleName.java
+++ b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/RuleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RuleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_RULE =
diff --git a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/TagName.java b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/TagName.java
index 20518bdbe3f1..ca301b02211d 100644
--- a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/TagName.java
+++ b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/TagName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_PACKAGE_TAG =
diff --git a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/VersionName.java b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/VersionName.java
index cc856ff01958..1f8086ca1935 100644
--- a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/VersionName.java
+++ b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/VersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_PACKAGE_VERSION =
diff --git a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/VpcscConfigName.java b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/VpcscConfigName.java
index d82d5badcd71..df7cbec3dca0 100644
--- a/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/VpcscConfigName.java
+++ b/java-artifact-registry/proto-google-cloud-artifact-registry-v1/src/main/java/com/google/devtools/artifactregistry/v1/VpcscConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VpcscConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-artifact-registry/proto-google-cloud-artifact-registry-v1beta2/src/main/java/com/google/devtools/artifactregistry/v1beta2/LocationName.java b/java-artifact-registry/proto-google-cloud-artifact-registry-v1beta2/src/main/java/com/google/devtools/artifactregistry/v1beta2/LocationName.java
index c2a07e4401fe..63b4c3f5da86 100644
--- a/java-artifact-registry/proto-google-cloud-artifact-registry-v1beta2/src/main/java/com/google/devtools/artifactregistry/v1beta2/LocationName.java
+++ b/java-artifact-registry/proto-google-cloud-artifact-registry-v1beta2/src/main/java/com/google/devtools/artifactregistry/v1beta2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-artifact-registry/proto-google-cloud-artifact-registry-v1beta2/src/main/java/com/google/devtools/artifactregistry/v1beta2/ProjectSettingsName.java b/java-artifact-registry/proto-google-cloud-artifact-registry-v1beta2/src/main/java/com/google/devtools/artifactregistry/v1beta2/ProjectSettingsName.java
index fd50baa00f4e..e00af05ee61c 100644
--- a/java-artifact-registry/proto-google-cloud-artifact-registry-v1beta2/src/main/java/com/google/devtools/artifactregistry/v1beta2/ProjectSettingsName.java
+++ b/java-artifact-registry/proto-google-cloud-artifact-registry-v1beta2/src/main/java/com/google/devtools/artifactregistry/v1beta2/ProjectSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectSettingsName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-artifact-registry/proto-google-cloud-artifact-registry-v1beta2/src/main/java/com/google/devtools/artifactregistry/v1beta2/RepositoryName.java b/java-artifact-registry/proto-google-cloud-artifact-registry-v1beta2/src/main/java/com/google/devtools/artifactregistry/v1beta2/RepositoryName.java
index 31a339b4916a..c562dc0ec921 100644
--- a/java-artifact-registry/proto-google-cloud-artifact-registry-v1beta2/src/main/java/com/google/devtools/artifactregistry/v1beta2/RepositoryName.java
+++ b/java-artifact-registry/proto-google-cloud-artifact-registry-v1beta2/src/main/java/com/google/devtools/artifactregistry/v1beta2/RepositoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RepositoryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY =
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/AssetServiceClient.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/AssetServiceClient.java
index b58dd23fea5d..10a1997dec2b 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/AssetServiceClient.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/AssetServiceClient.java
@@ -39,6 +39,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -583,6 +584,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AssetServiceClient implements BackgroundResource {
   private final AssetServiceSettings settings;
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/AssetServiceSettings.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/AssetServiceSettings.java
index bff9ae0b3496..eec741d842a1 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/AssetServiceSettings.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/AssetServiceSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AssetServiceSettings extends ClientSettings<AssetServiceSettings> {
 
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/AssetServiceStub.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/AssetServiceStub.java
index c6b00a976d72..e9fb3c96b21a 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/AssetServiceStub.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/AssetServiceStub.java
@@ -72,6 +72,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -79,6 +80,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AssetServiceStub implements BackgroundResource {
 
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/AssetServiceStubSettings.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/AssetServiceStubSettings.java
index b6e0b33b7985..b777d191025e 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/AssetServiceStubSettings.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/AssetServiceStubSettings.java
@@ -109,6 +109,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -186,6 +187,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AssetServiceStubSettings extends StubSettings<AssetServiceStubSettings> {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/GrpcAssetServiceCallableFactory.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/GrpcAssetServiceCallableFactory.java
index 242acd7db303..e1e74ecfdf07 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/GrpcAssetServiceCallableFactory.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/GrpcAssetServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAssetServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/GrpcAssetServiceStub.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/GrpcAssetServiceStub.java
index 18c7252b1b9d..b7a556ad6f96 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/GrpcAssetServiceStub.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/GrpcAssetServiceStub.java
@@ -81,6 +81,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAssetServiceStub extends AssetServiceStub {
   private static final MethodDescriptor<ExportAssetsRequest, Operation>
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/HttpJsonAssetServiceCallableFactory.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/HttpJsonAssetServiceCallableFactory.java
index 3e0878845ae1..994dbf67c729 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/HttpJsonAssetServiceCallableFactory.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/HttpJsonAssetServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAssetServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/HttpJsonAssetServiceStub.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/HttpJsonAssetServiceStub.java
index 6a2cd3b258c1..2a15af43c4d5 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/HttpJsonAssetServiceStub.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1/stub/HttpJsonAssetServiceStub.java
@@ -92,6 +92,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAssetServiceStub extends AssetServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/AssetServiceClient.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/AssetServiceClient.java
index 23a9c5c8ea6c..da6956018f56 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/AssetServiceClient.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/AssetServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -159,6 +160,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AssetServiceClient implements BackgroundResource {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/AssetServiceSettings.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/AssetServiceSettings.java
index e47ac7399696..ffc7cee53bd4 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/AssetServiceSettings.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/AssetServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AssetServiceSettings extends ClientSettings<AssetServiceSettings> {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/AssetServiceStub.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/AssetServiceStub.java
index 55d885e4aff9..7c548b38799e 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/AssetServiceStub.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/AssetServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.cloud.asset.v1p1beta1.SearchAllResourcesRequest;
 import com.google.cloud.asset.v1p1beta1.SearchAllResourcesResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AssetServiceStub implements BackgroundResource {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/AssetServiceStubSettings.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/AssetServiceStubSettings.java
index f42059ce87f5..d80feb758fac 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/AssetServiceStubSettings.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/AssetServiceStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/GrpcAssetServiceCallableFactory.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/GrpcAssetServiceCallableFactory.java
index c1c909f0978c..bd4ca8892dda 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/GrpcAssetServiceCallableFactory.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/GrpcAssetServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAssetServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/GrpcAssetServiceStub.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/GrpcAssetServiceStub.java
index 43847f256754..8ee6f0e14916 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/GrpcAssetServiceStub.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/GrpcAssetServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAssetServiceStub extends AssetServiceStub {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/HttpJsonAssetServiceCallableFactory.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/HttpJsonAssetServiceCallableFactory.java
index 151e282f1808..0437fefe14fe 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/HttpJsonAssetServiceCallableFactory.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/HttpJsonAssetServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAssetServiceCallableFactory
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/HttpJsonAssetServiceStub.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/HttpJsonAssetServiceStub.java
index 633ce2f02d01..550d27c52808 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/HttpJsonAssetServiceStub.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p1beta1/stub/HttpJsonAssetServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAssetServiceStub extends AssetServiceStub {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/AssetServiceClient.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/AssetServiceClient.java
index d27d86f9d8a0..aa92480c8536 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/AssetServiceClient.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/AssetServiceClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -201,6 +202,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AssetServiceClient implements BackgroundResource {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/AssetServiceSettings.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/AssetServiceSettings.java
index 17ad3fa98100..68f5fa6aa551 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/AssetServiceSettings.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/AssetServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AssetServiceSettings extends ClientSettings<AssetServiceSettings> {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/AssetServiceStub.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/AssetServiceStub.java
index f0aab34e3d90..9e6011eecc35 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/AssetServiceStub.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/AssetServiceStub.java
@@ -28,6 +28,7 @@
 import com.google.cloud.asset.v1p2beta1.UpdateFeedRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AssetServiceStub implements BackgroundResource {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/AssetServiceStubSettings.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/AssetServiceStubSettings.java
index c2c7d0cc1121..891bed6301ab 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/AssetServiceStubSettings.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/AssetServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/GrpcAssetServiceCallableFactory.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/GrpcAssetServiceCallableFactory.java
index 4627da015075..ec611cbad55b 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/GrpcAssetServiceCallableFactory.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/GrpcAssetServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAssetServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/GrpcAssetServiceStub.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/GrpcAssetServiceStub.java
index 3fc2ab9758fc..0d74b03d5bcd 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/GrpcAssetServiceStub.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/GrpcAssetServiceStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAssetServiceStub extends AssetServiceStub {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/HttpJsonAssetServiceCallableFactory.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/HttpJsonAssetServiceCallableFactory.java
index a1be50700077..370da531cf7f 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/HttpJsonAssetServiceCallableFactory.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/HttpJsonAssetServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAssetServiceCallableFactory
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/HttpJsonAssetServiceStub.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/HttpJsonAssetServiceStub.java
index b1c4e89b74e8..6e8b3188b9ab 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/HttpJsonAssetServiceStub.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p2beta1/stub/HttpJsonAssetServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAssetServiceStub extends AssetServiceStub {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/AssetServiceClient.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/AssetServiceClient.java
index 4d08a34e7c1a..876705b76b7d 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/AssetServiceClient.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/AssetServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -157,6 +158,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AssetServiceClient implements BackgroundResource {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/AssetServiceSettings.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/AssetServiceSettings.java
index 8e0b7e353cbe..25b8b4e6fe53 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/AssetServiceSettings.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/AssetServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AssetServiceSettings extends ClientSettings<AssetServiceSettings> {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/AssetServiceStub.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/AssetServiceStub.java
index 4fdfb22f750e..601d17f1073c 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/AssetServiceStub.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/AssetServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.cloud.asset.v1p5beta1.ListAssetsRequest;
 import com.google.cloud.asset.v1p5beta1.ListAssetsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AssetServiceStub implements BackgroundResource {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/AssetServiceStubSettings.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/AssetServiceStubSettings.java
index 2e0154bb9528..a3e11679bb22 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/AssetServiceStubSettings.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/AssetServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/GrpcAssetServiceCallableFactory.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/GrpcAssetServiceCallableFactory.java
index 1a82e71323d8..7cf9adf27128 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/GrpcAssetServiceCallableFactory.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/GrpcAssetServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAssetServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/GrpcAssetServiceStub.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/GrpcAssetServiceStub.java
index ed622a65b167..0e56ff369cee 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/GrpcAssetServiceStub.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/GrpcAssetServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAssetServiceStub extends AssetServiceStub {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/HttpJsonAssetServiceCallableFactory.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/HttpJsonAssetServiceCallableFactory.java
index e85192586217..fe4d69e6d80b 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/HttpJsonAssetServiceCallableFactory.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/HttpJsonAssetServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAssetServiceCallableFactory
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/HttpJsonAssetServiceStub.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/HttpJsonAssetServiceStub.java
index f945a2cefd27..5669ae9953e1 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/HttpJsonAssetServiceStub.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p5beta1/stub/HttpJsonAssetServiceStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAssetServiceStub extends AssetServiceStub {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/AssetServiceClient.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/AssetServiceClient.java
index 1348df09271d..3c2afa116658 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/AssetServiceClient.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/AssetServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AssetServiceClient implements BackgroundResource {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/AssetServiceSettings.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/AssetServiceSettings.java
index 53fdccf88473..fb8b368ebec2 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/AssetServiceSettings.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/AssetServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AssetServiceSettings extends ClientSettings<AssetServiceSettings> {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/AssetServiceStub.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/AssetServiceStub.java
index fdbde7fab757..f084e9a529f1 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/AssetServiceStub.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/AssetServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AssetServiceStub implements BackgroundResource {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/AssetServiceStubSettings.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/AssetServiceStubSettings.java
index 443148d641f5..d47e28e859e9 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/AssetServiceStubSettings.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/AssetServiceStubSettings.java
@@ -48,6 +48,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/GrpcAssetServiceCallableFactory.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/GrpcAssetServiceCallableFactory.java
index 449e3efff10c..744a2e0fc220 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/GrpcAssetServiceCallableFactory.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/GrpcAssetServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAssetServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/GrpcAssetServiceStub.java b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/GrpcAssetServiceStub.java
index a010f1d6b575..f3c284c5b380 100644
--- a/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/GrpcAssetServiceStub.java
+++ b/java-asset/google-cloud-asset/src/main/java/com/google/cloud/asset/v1p7beta1/stub/GrpcAssetServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAssetServiceStub extends AssetServiceStub {
diff --git a/java-asset/proto-google-cloud-asset-v1/src/main/java/com/google/cloud/asset/v1/FeedName.java b/java-asset/proto-google-cloud-asset-v1/src/main/java/com/google/cloud/asset/v1/FeedName.java
index 1ac375c62024..32ec89a94285 100644
--- a/java-asset/proto-google-cloud-asset-v1/src/main/java/com/google/cloud/asset/v1/FeedName.java
+++ b/java-asset/proto-google-cloud-asset-v1/src/main/java/com/google/cloud/asset/v1/FeedName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeedName implements ResourceName {
   private static final PathTemplate PROJECT_FEED =
diff --git a/java-asset/proto-google-cloud-asset-v1/src/main/java/com/google/cloud/asset/v1/FolderName.java b/java-asset/proto-google-cloud-asset-v1/src/main/java/com/google/cloud/asset/v1/FolderName.java
index 41c31e946a0f..29369cb83590 100644
--- a/java-asset/proto-google-cloud-asset-v1/src/main/java/com/google/cloud/asset/v1/FolderName.java
+++ b/java-asset/proto-google-cloud-asset-v1/src/main/java/com/google/cloud/asset/v1/FolderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderName implements ResourceName {
   private static final PathTemplate FOLDER =
diff --git a/java-asset/proto-google-cloud-asset-v1/src/main/java/com/google/cloud/asset/v1/OrganizationName.java b/java-asset/proto-google-cloud-asset-v1/src/main/java/com/google/cloud/asset/v1/OrganizationName.java
index 7ceca6182ac2..0cadf25e6184 100644
--- a/java-asset/proto-google-cloud-asset-v1/src/main/java/com/google/cloud/asset/v1/OrganizationName.java
+++ b/java-asset/proto-google-cloud-asset-v1/src/main/java/com/google/cloud/asset/v1/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-asset/proto-google-cloud-asset-v1/src/main/java/com/google/cloud/asset/v1/SavedQueryName.java b/java-asset/proto-google-cloud-asset-v1/src/main/java/com/google/cloud/asset/v1/SavedQueryName.java
index 85c8095f1710..9692dc4e38e0 100644
--- a/java-asset/proto-google-cloud-asset-v1/src/main/java/com/google/cloud/asset/v1/SavedQueryName.java
+++ b/java-asset/proto-google-cloud-asset-v1/src/main/java/com/google/cloud/asset/v1/SavedQueryName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SavedQueryName implements ResourceName {
   private static final PathTemplate PROJECT_SAVED_QUERY =
diff --git a/java-asset/proto-google-cloud-asset-v1p2beta1/src/main/java/com/google/cloud/asset/v1p2beta1/FeedName.java b/java-asset/proto-google-cloud-asset-v1p2beta1/src/main/java/com/google/cloud/asset/v1p2beta1/FeedName.java
index fd6ecb6a380d..c21d326cdba3 100644
--- a/java-asset/proto-google-cloud-asset-v1p2beta1/src/main/java/com/google/cloud/asset/v1p2beta1/FeedName.java
+++ b/java-asset/proto-google-cloud-asset-v1p2beta1/src/main/java/com/google/cloud/asset/v1p2beta1/FeedName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeedName implements ResourceName {
   private static final PathTemplate PROJECT_FEED =
diff --git a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/AssuredWorkloadsServiceClient.java b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/AssuredWorkloadsServiceClient.java
index 10611a578e42..4c5914cda8db 100644
--- a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/AssuredWorkloadsServiceClient.java
+++ b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/AssuredWorkloadsServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -292,6 +293,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AssuredWorkloadsServiceClient implements BackgroundResource {
   private final AssuredWorkloadsServiceSettings settings;
diff --git a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/AssuredWorkloadsServiceSettings.java b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/AssuredWorkloadsServiceSettings.java
index c17ce811418d..4fbf055c5295 100644
--- a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/AssuredWorkloadsServiceSettings.java
+++ b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/AssuredWorkloadsServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AssuredWorkloadsServiceSettings
     extends ClientSettings<AssuredWorkloadsServiceSettings> {
diff --git a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/AssuredWorkloadsServiceStub.java b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/AssuredWorkloadsServiceStub.java
index ca1e78be3f96..5c3170975d55 100644
--- a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/AssuredWorkloadsServiceStub.java
+++ b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/AssuredWorkloadsServiceStub.java
@@ -42,6 +42,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AssuredWorkloadsServiceStub implements BackgroundResource {
 
diff --git a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/AssuredWorkloadsServiceStubSettings.java b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/AssuredWorkloadsServiceStubSettings.java
index 26dfaf0dbd26..08425b1c6c85 100644
--- a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/AssuredWorkloadsServiceStubSettings.java
+++ b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/AssuredWorkloadsServiceStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AssuredWorkloadsServiceStubSettings
diff --git a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/GrpcAssuredWorkloadsServiceCallableFactory.java b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/GrpcAssuredWorkloadsServiceCallableFactory.java
index 769f987e0bc2..47a5e2449744 100644
--- a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/GrpcAssuredWorkloadsServiceCallableFactory.java
+++ b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/GrpcAssuredWorkloadsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAssuredWorkloadsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/GrpcAssuredWorkloadsServiceStub.java b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/GrpcAssuredWorkloadsServiceStub.java
index 642f02b55649..7bb174d00235 100644
--- a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/GrpcAssuredWorkloadsServiceStub.java
+++ b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/GrpcAssuredWorkloadsServiceStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAssuredWorkloadsServiceStub extends AssuredWorkloadsServiceStub {
   private static final MethodDescriptor<CreateWorkloadRequest, Operation>
diff --git a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/HttpJsonAssuredWorkloadsServiceCallableFactory.java b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/HttpJsonAssuredWorkloadsServiceCallableFactory.java
index a48b647c1094..36084c751163 100644
--- a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/HttpJsonAssuredWorkloadsServiceCallableFactory.java
+++ b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/HttpJsonAssuredWorkloadsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAssuredWorkloadsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/HttpJsonAssuredWorkloadsServiceStub.java b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/HttpJsonAssuredWorkloadsServiceStub.java
index 65d872c991c1..7928f22fba6e 100644
--- a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/HttpJsonAssuredWorkloadsServiceStub.java
+++ b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1/stub/HttpJsonAssuredWorkloadsServiceStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAssuredWorkloadsServiceStub extends AssuredWorkloadsServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/AssuredWorkloadsServiceClient.java b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/AssuredWorkloadsServiceClient.java
index 82a22ebac7b3..064e815cc497 100644
--- a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/AssuredWorkloadsServiceClient.java
+++ b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/AssuredWorkloadsServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -257,6 +258,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AssuredWorkloadsServiceClient implements BackgroundResource {
diff --git a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/AssuredWorkloadsServiceSettings.java b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/AssuredWorkloadsServiceSettings.java
index 5e9ce7ac3962..a381f9abfa0a 100644
--- a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/AssuredWorkloadsServiceSettings.java
+++ b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/AssuredWorkloadsServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AssuredWorkloadsServiceSettings
diff --git a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/AssuredWorkloadsServiceStub.java b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/AssuredWorkloadsServiceStub.java
index fd231ba1b5a5..c4c1d05aa1aa 100644
--- a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/AssuredWorkloadsServiceStub.java
+++ b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/AssuredWorkloadsServiceStub.java
@@ -38,6 +38,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AssuredWorkloadsServiceStub implements BackgroundResource {
diff --git a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/AssuredWorkloadsServiceStubSettings.java b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/AssuredWorkloadsServiceStubSettings.java
index dc38c6c0b3b9..ab96e6d882b1 100644
--- a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/AssuredWorkloadsServiceStubSettings.java
+++ b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/AssuredWorkloadsServiceStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/GrpcAssuredWorkloadsServiceCallableFactory.java b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/GrpcAssuredWorkloadsServiceCallableFactory.java
index 634df2dbea3a..e7756301cf21 100644
--- a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/GrpcAssuredWorkloadsServiceCallableFactory.java
+++ b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/GrpcAssuredWorkloadsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAssuredWorkloadsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/GrpcAssuredWorkloadsServiceStub.java b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/GrpcAssuredWorkloadsServiceStub.java
index d1005314e42e..6e923fadb85f 100644
--- a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/GrpcAssuredWorkloadsServiceStub.java
+++ b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/GrpcAssuredWorkloadsServiceStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAssuredWorkloadsServiceStub extends AssuredWorkloadsServiceStub {
diff --git a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/HttpJsonAssuredWorkloadsServiceCallableFactory.java b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/HttpJsonAssuredWorkloadsServiceCallableFactory.java
index 2fb3f58dfb5b..bd4d179678ec 100644
--- a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/HttpJsonAssuredWorkloadsServiceCallableFactory.java
+++ b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/HttpJsonAssuredWorkloadsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAssuredWorkloadsServiceCallableFactory
diff --git a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/HttpJsonAssuredWorkloadsServiceStub.java b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/HttpJsonAssuredWorkloadsServiceStub.java
index 62dc0032f728..ea4fde2d166a 100644
--- a/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/HttpJsonAssuredWorkloadsServiceStub.java
+++ b/java-assured-workloads/google-cloud-assured-workloads/src/main/java/com/google/cloud/assuredworkloads/v1beta1/stub/HttpJsonAssuredWorkloadsServiceStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAssuredWorkloadsServiceStub extends AssuredWorkloadsServiceStub {
diff --git a/java-assured-workloads/proto-google-cloud-assured-workloads-v1/src/main/java/com/google/cloud/assuredworkloads/v1/LocationName.java b/java-assured-workloads/proto-google-cloud-assured-workloads-v1/src/main/java/com/google/cloud/assuredworkloads/v1/LocationName.java
index a4c2ff27a9f3..16f3d02764f0 100644
--- a/java-assured-workloads/proto-google-cloud-assured-workloads-v1/src/main/java/com/google/cloud/assuredworkloads/v1/LocationName.java
+++ b/java-assured-workloads/proto-google-cloud-assured-workloads-v1/src/main/java/com/google/cloud/assuredworkloads/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-assured-workloads/proto-google-cloud-assured-workloads-v1/src/main/java/com/google/cloud/assuredworkloads/v1/ViolationName.java b/java-assured-workloads/proto-google-cloud-assured-workloads-v1/src/main/java/com/google/cloud/assuredworkloads/v1/ViolationName.java
index a5f9d14e35fb..9fc66cbd7b6e 100644
--- a/java-assured-workloads/proto-google-cloud-assured-workloads-v1/src/main/java/com/google/cloud/assuredworkloads/v1/ViolationName.java
+++ b/java-assured-workloads/proto-google-cloud-assured-workloads-v1/src/main/java/com/google/cloud/assuredworkloads/v1/ViolationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ViolationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_WORKLOAD_VIOLATION =
diff --git a/java-assured-workloads/proto-google-cloud-assured-workloads-v1/src/main/java/com/google/cloud/assuredworkloads/v1/WorkloadName.java b/java-assured-workloads/proto-google-cloud-assured-workloads-v1/src/main/java/com/google/cloud/assuredworkloads/v1/WorkloadName.java
index 1afd45c867d8..c7bdf045bc30 100644
--- a/java-assured-workloads/proto-google-cloud-assured-workloads-v1/src/main/java/com/google/cloud/assuredworkloads/v1/WorkloadName.java
+++ b/java-assured-workloads/proto-google-cloud-assured-workloads-v1/src/main/java/com/google/cloud/assuredworkloads/v1/WorkloadName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkloadName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_WORKLOAD =
diff --git a/java-assured-workloads/proto-google-cloud-assured-workloads-v1beta1/src/main/java/com/google/cloud/assuredworkloads/v1beta1/LocationName.java b/java-assured-workloads/proto-google-cloud-assured-workloads-v1beta1/src/main/java/com/google/cloud/assuredworkloads/v1beta1/LocationName.java
index 645283929078..34968ee03740 100644
--- a/java-assured-workloads/proto-google-cloud-assured-workloads-v1beta1/src/main/java/com/google/cloud/assuredworkloads/v1beta1/LocationName.java
+++ b/java-assured-workloads/proto-google-cloud-assured-workloads-v1beta1/src/main/java/com/google/cloud/assuredworkloads/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-assured-workloads/proto-google-cloud-assured-workloads-v1beta1/src/main/java/com/google/cloud/assuredworkloads/v1beta1/WorkloadName.java b/java-assured-workloads/proto-google-cloud-assured-workloads-v1beta1/src/main/java/com/google/cloud/assuredworkloads/v1beta1/WorkloadName.java
index 2bb050eaae76..b9a3af778b34 100644
--- a/java-assured-workloads/proto-google-cloud-assured-workloads-v1beta1/src/main/java/com/google/cloud/assuredworkloads/v1beta1/WorkloadName.java
+++ b/java-assured-workloads/proto-google-cloud-assured-workloads-v1beta1/src/main/java/com/google/cloud/assuredworkloads/v1beta1/WorkloadName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkloadName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_WORKLOAD =
diff --git a/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/AuditManagerClient.java b/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/AuditManagerClient.java
index cdf2734e952b..3b3390b0c7cc 100644
--- a/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/AuditManagerClient.java
+++ b/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/AuditManagerClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -309,6 +310,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AuditManagerClient implements BackgroundResource {
   private final AuditManagerSettings settings;
diff --git a/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/AuditManagerSettings.java b/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/AuditManagerSettings.java
index 58e071a21f40..9f9a4fb61a69 100644
--- a/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/AuditManagerSettings.java
+++ b/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/AuditManagerSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AuditManagerSettings extends ClientSettings<AuditManagerSettings> {
 
diff --git a/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/AuditManagerStub.java b/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/AuditManagerStub.java
index 5123463d4f1b..b3b712a11867 100644
--- a/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/AuditManagerStub.java
+++ b/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/AuditManagerStub.java
@@ -47,6 +47,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AuditManagerStub implements BackgroundResource {
 
diff --git a/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/AuditManagerStubSettings.java b/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/AuditManagerStubSettings.java
index 6a02d3785b18..0aef223450c2 100644
--- a/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/AuditManagerStubSettings.java
+++ b/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/AuditManagerStubSettings.java
@@ -82,6 +82,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -159,6 +160,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AuditManagerStubSettings extends StubSettings<AuditManagerStubSettings> {
diff --git a/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/GrpcAuditManagerCallableFactory.java b/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/GrpcAuditManagerCallableFactory.java
index e104532d15d1..92e8824661d9 100644
--- a/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/GrpcAuditManagerCallableFactory.java
+++ b/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/GrpcAuditManagerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAuditManagerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/GrpcAuditManagerStub.java b/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/GrpcAuditManagerStub.java
index ed31fe6d77b8..c0b7d98914c8 100644
--- a/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/GrpcAuditManagerStub.java
+++ b/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/GrpcAuditManagerStub.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAuditManagerStub extends AuditManagerStub {
   private static final MethodDescriptor<EnrollResourceRequest, Enrollment>
diff --git a/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/HttpJsonAuditManagerCallableFactory.java b/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/HttpJsonAuditManagerCallableFactory.java
index 4f3ec993aab0..542552b02380 100644
--- a/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/HttpJsonAuditManagerCallableFactory.java
+++ b/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/HttpJsonAuditManagerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAuditManagerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/HttpJsonAuditManagerStub.java b/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/HttpJsonAuditManagerStub.java
index e922537f02aa..09cdc06ff2be 100644
--- a/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/HttpJsonAuditManagerStub.java
+++ b/java-auditmanager/google-cloud-auditmanager/src/main/java/com/google/cloud/auditmanager/v1/stub/HttpJsonAuditManagerStub.java
@@ -67,6 +67,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAuditManagerStub extends AuditManagerStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/AuditReportName.java b/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/AuditReportName.java
index b9f5ff04d747..71fbb9e095f3 100644
--- a/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/AuditReportName.java
+++ b/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/AuditReportName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AuditReportName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AUDIT_REPORT =
diff --git a/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/EnrollmentStatusScopeName.java b/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/EnrollmentStatusScopeName.java
index 614d6356d1ba..fc92c9adaca7 100644
--- a/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/EnrollmentStatusScopeName.java
+++ b/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/EnrollmentStatusScopeName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EnrollmentStatusScopeName implements ResourceName {
   private static final PathTemplate FOLDER_LOCATION =
diff --git a/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/LocationName.java b/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/LocationName.java
index cb85dc04cdea..bb3c63d32ce3 100644
--- a/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/LocationName.java
+++ b/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/ResourceEnrollmentStatusName.java b/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/ResourceEnrollmentStatusName.java
index 4ac99fcad7dd..e831db28cead 100644
--- a/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/ResourceEnrollmentStatusName.java
+++ b/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/ResourceEnrollmentStatusName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ResourceEnrollmentStatusName implements ResourceName {
   private static final PathTemplate FOLDER_LOCATION_RESOURCE_ENROLLMENT_STATUS =
diff --git a/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/StandardName.java b/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/StandardName.java
index 60a063bc361e..6c62ad6b6919 100644
--- a/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/StandardName.java
+++ b/java-auditmanager/proto-google-cloud-auditmanager-v1/src/main/java/com/google/cloud/auditmanager/v1/StandardName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StandardName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_STANDARD =
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/AutoMlClient.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/AutoMlClient.java
index 95d8c70fda38..27e2de795e73 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/AutoMlClient.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/AutoMlClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -494,6 +495,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutoMlClient implements BackgroundResource {
   private final AutoMlSettings settings;
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/AutoMlSettings.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/AutoMlSettings.java
index 56b3ca588de4..cd566dfee46b 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/AutoMlSettings.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/AutoMlSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutoMlSettings extends ClientSettings<AutoMlSettings> {
 
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/PredictionServiceClient.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/PredictionServiceClient.java
index d9fcd1b7c75b..b374b9515ad4 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/PredictionServiceClient.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/PredictionServiceClient.java
@@ -29,6 +29,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -199,6 +200,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PredictionServiceClient implements BackgroundResource {
   private final PredictionServiceSettings settings;
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/PredictionServiceSettings.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/PredictionServiceSettings.java
index f93d97cd0305..dd9f27b0d841 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/PredictionServiceSettings.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/PredictionServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PredictionServiceSettings extends ClientSettings<PredictionServiceSettings> {
 
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/AutoMlStub.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/AutoMlStub.java
index e44091cd47c1..26953bd52ac4 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/AutoMlStub.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/AutoMlStub.java
@@ -53,6 +53,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AutoMlStub implements BackgroundResource {
 
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/AutoMlStubSettings.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/AutoMlStubSettings.java
index ed0f097f91a4..fbeb427e1e36 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/AutoMlStubSettings.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/AutoMlStubSettings.java
@@ -87,6 +87,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -162,6 +163,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AutoMlStubSettings extends StubSettings<AutoMlStubSettings> {
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/GrpcAutoMlCallableFactory.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/GrpcAutoMlCallableFactory.java
index 6fc288d713d8..8fa5732f57b5 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/GrpcAutoMlCallableFactory.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/GrpcAutoMlCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAutoMlCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/GrpcAutoMlStub.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/GrpcAutoMlStub.java
index 26d63a92c9d2..452dc4abcdd6 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/GrpcAutoMlStub.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/GrpcAutoMlStub.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAutoMlStub extends AutoMlStub {
   private static final MethodDescriptor<CreateDatasetRequest, Operation>
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/GrpcPredictionServiceCallableFactory.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/GrpcPredictionServiceCallableFactory.java
index 238ba429c7fa..a577d73c082b 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/GrpcPredictionServiceCallableFactory.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/GrpcPredictionServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPredictionServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/GrpcPredictionServiceStub.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/GrpcPredictionServiceStub.java
index f707eb955888..bc004db389ce 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/GrpcPredictionServiceStub.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/GrpcPredictionServiceStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPredictionServiceStub extends PredictionServiceStub {
   private static final MethodDescriptor<PredictRequest, PredictResponse> predictMethodDescriptor =
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/HttpJsonAutoMlCallableFactory.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/HttpJsonAutoMlCallableFactory.java
index d8ffee2a02c6..2771d95cb30d 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/HttpJsonAutoMlCallableFactory.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/HttpJsonAutoMlCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAutoMlCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/HttpJsonAutoMlStub.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/HttpJsonAutoMlStub.java
index 047d0d49e492..2d39ed6dafac 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/HttpJsonAutoMlStub.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/HttpJsonAutoMlStub.java
@@ -73,6 +73,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -80,6 +81,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAutoMlStub extends AutoMlStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/HttpJsonPredictionServiceCallableFactory.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/HttpJsonPredictionServiceCallableFactory.java
index fd61fc8be9f1..316a75ea95c7 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/HttpJsonPredictionServiceCallableFactory.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/HttpJsonPredictionServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPredictionServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/HttpJsonPredictionServiceStub.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/HttpJsonPredictionServiceStub.java
index 92fa257f050a..dff424e217c6 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/HttpJsonPredictionServiceStub.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/HttpJsonPredictionServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPredictionServiceStub extends PredictionServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/PredictionServiceStub.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/PredictionServiceStub.java
index fe913fbb5e7b..e4847b4c786e 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/PredictionServiceStub.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/PredictionServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PredictionServiceStub implements BackgroundResource {
 
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/PredictionServiceStubSettings.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/PredictionServiceStubSettings.java
index 03af7c477d07..1fcde76c1f34 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/PredictionServiceStubSettings.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1/stub/PredictionServiceStubSettings.java
@@ -54,6 +54,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PredictionServiceStubSettings extends StubSettings<PredictionServiceStubSettings> {
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/AutoMlClient.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/AutoMlClient.java
index eabd1f160835..f8ecbd1fcdf0 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/AutoMlClient.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/AutoMlClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -614,6 +615,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AutoMlClient implements BackgroundResource {
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/AutoMlSettings.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/AutoMlSettings.java
index d6f752034159..70d3805292ec 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/AutoMlSettings.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/AutoMlSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AutoMlSettings extends ClientSettings<AutoMlSettings> {
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/PredictionServiceClient.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/PredictionServiceClient.java
index 7614d2828bca..ddb7cd057afc 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/PredictionServiceClient.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/PredictionServiceClient.java
@@ -29,6 +29,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -181,6 +182,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PredictionServiceClient implements BackgroundResource {
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/PredictionServiceSettings.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/PredictionServiceSettings.java
index c863747f0efb..50b4f94cd6ea 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/PredictionServiceSettings.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/PredictionServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PredictionServiceSettings extends ClientSettings<PredictionServiceSettings> {
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/AutoMlStub.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/AutoMlStub.java
index ea36d016d131..30686edd8676 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/AutoMlStub.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/AutoMlStub.java
@@ -66,6 +66,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AutoMlStub implements BackgroundResource {
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/AutoMlStubSettings.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/AutoMlStubSettings.java
index b35325aecd0e..0f68ade2fafa 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/AutoMlStubSettings.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/AutoMlStubSettings.java
@@ -99,6 +99,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -174,6 +175,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/GrpcAutoMlCallableFactory.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/GrpcAutoMlCallableFactory.java
index 33bf0e720d55..04786c91bf1b 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/GrpcAutoMlCallableFactory.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/GrpcAutoMlCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAutoMlCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/GrpcAutoMlStub.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/GrpcAutoMlStub.java
index 0953284d4a25..069feed15104 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/GrpcAutoMlStub.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/GrpcAutoMlStub.java
@@ -75,6 +75,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAutoMlStub extends AutoMlStub {
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/GrpcPredictionServiceCallableFactory.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/GrpcPredictionServiceCallableFactory.java
index 6d7654ad714b..9aa75b62c371 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/GrpcPredictionServiceCallableFactory.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/GrpcPredictionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPredictionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/GrpcPredictionServiceStub.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/GrpcPredictionServiceStub.java
index e95c7919766d..f2d5d99efa00 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/GrpcPredictionServiceStub.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/GrpcPredictionServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPredictionServiceStub extends PredictionServiceStub {
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/HttpJsonAutoMlCallableFactory.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/HttpJsonAutoMlCallableFactory.java
index 6ccca4398c54..fc479a7bfcc5 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/HttpJsonAutoMlCallableFactory.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/HttpJsonAutoMlCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAutoMlCallableFactory
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/HttpJsonAutoMlStub.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/HttpJsonAutoMlStub.java
index 464c3ded3bab..4d16a88c9b8f 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/HttpJsonAutoMlStub.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/HttpJsonAutoMlStub.java
@@ -86,6 +86,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -93,6 +94,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAutoMlStub extends AutoMlStub {
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/HttpJsonPredictionServiceCallableFactory.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/HttpJsonPredictionServiceCallableFactory.java
index d5dd5b7a9b99..a8bb4e33ae01 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/HttpJsonPredictionServiceCallableFactory.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/HttpJsonPredictionServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPredictionServiceCallableFactory
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/HttpJsonPredictionServiceStub.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/HttpJsonPredictionServiceStub.java
index 3eb611031749..495f688abfd1 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/HttpJsonPredictionServiceStub.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/HttpJsonPredictionServiceStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPredictionServiceStub extends PredictionServiceStub {
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/PredictionServiceStub.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/PredictionServiceStub.java
index ed041a9aed7d..77176f1328cc 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/PredictionServiceStub.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/PredictionServiceStub.java
@@ -28,6 +28,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PredictionServiceStub implements BackgroundResource {
diff --git a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/PredictionServiceStubSettings.java b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/PredictionServiceStubSettings.java
index efb6e26fa7bf..ca21714f1c29 100644
--- a/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/PredictionServiceStubSettings.java
+++ b/java-automl/google-cloud-automl/src/main/java/com/google/cloud/automl/v1beta1/stub/PredictionServiceStubSettings.java
@@ -54,6 +54,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/AnnotationSpecName.java b/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/AnnotationSpecName.java
index cbca89e316ef..8cd22962bfbc 100644
--- a/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/AnnotationSpecName.java
+++ b/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/AnnotationSpecName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnnotationSpecName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET_ANNOTATION_SPEC =
diff --git a/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/DatasetName.java b/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/DatasetName.java
index 1cf5dc95330e..7531e922d928 100644
--- a/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/DatasetName.java
+++ b/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/DatasetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatasetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET =
diff --git a/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/LocationName.java b/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/LocationName.java
index b68a9ad1d013..acba50c2d868 100644
--- a/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/LocationName.java
+++ b/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/ModelEvaluationName.java b/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/ModelEvaluationName.java
index 74bb1d5d9c64..f9ba60888240 100644
--- a/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/ModelEvaluationName.java
+++ b/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/ModelEvaluationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelEvaluationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MODEL_MODEL_EVALUATION =
diff --git a/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/ModelName.java b/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/ModelName.java
index bbba34e25085..aa1e040a56d4 100644
--- a/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/ModelName.java
+++ b/java-automl/proto-google-cloud-automl-v1/src/main/java/com/google/cloud/automl/v1/ModelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MODEL =
diff --git a/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/AnnotationSpecName.java b/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/AnnotationSpecName.java
index 508a98d087da..5a266270b5bd 100644
--- a/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/AnnotationSpecName.java
+++ b/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/AnnotationSpecName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnnotationSpecName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET_ANNOTATION_SPEC =
diff --git a/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/ColumnSpecName.java b/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/ColumnSpecName.java
index 3cb55783c158..85034509eb73 100644
--- a/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/ColumnSpecName.java
+++ b/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/ColumnSpecName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ColumnSpecName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET_TABLE_SPEC_COLUMN_SPEC =
diff --git a/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/DatasetName.java b/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/DatasetName.java
index 6da35d0022e5..ba5360b1fc1f 100644
--- a/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/DatasetName.java
+++ b/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/DatasetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatasetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET =
diff --git a/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/LocationName.java b/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/LocationName.java
index 25445d2b6cdf..840e40941165 100644
--- a/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/LocationName.java
+++ b/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/ModelEvaluationName.java b/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/ModelEvaluationName.java
index d6d98a92faf7..b970a1a5da89 100644
--- a/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/ModelEvaluationName.java
+++ b/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/ModelEvaluationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelEvaluationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MODEL_MODEL_EVALUATION =
diff --git a/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/ModelName.java b/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/ModelName.java
index 3aa4046eebf2..c5b21ce01270 100644
--- a/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/ModelName.java
+++ b/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/ModelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MODEL =
diff --git a/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/TableSpecName.java b/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/TableSpecName.java
index 8402001fadba..dbb6a12315d5 100644
--- a/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/TableSpecName.java
+++ b/java-automl/proto-google-cloud-automl-v1beta1/src/main/java/com/google/cloud/automl/v1beta1/TableSpecName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TableSpecName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET_TABLE_SPEC =
diff --git a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/BackupDRClient.java b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/BackupDRClient.java
index a48d16487a5f..ff3d52b30ce4 100644
--- a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/BackupDRClient.java
+++ b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/BackupDRClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -927,6 +928,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupDRClient implements BackgroundResource {
   private final BackupDRSettings settings;
diff --git a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/BackupDRSettings.java b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/BackupDRSettings.java
index 775bf2b4cd8d..6d35171f0dfe 100644
--- a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/BackupDRSettings.java
+++ b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/BackupDRSettings.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -133,6 +134,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupDRSettings extends ClientSettings<BackupDRSettings> {
 
diff --git a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/BackupDrProtectionSummaryClient.java b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/BackupDrProtectionSummaryClient.java
index c7899b9f2126..4b2989339bb3 100644
--- a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/BackupDrProtectionSummaryClient.java
+++ b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/BackupDrProtectionSummaryClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -223,6 +224,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupDrProtectionSummaryClient implements BackgroundResource {
   private final BackupDrProtectionSummarySettings settings;
diff --git a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/BackupDrProtectionSummarySettings.java b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/BackupDrProtectionSummarySettings.java
index da7d561e391b..bab9196fac0f 100644
--- a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/BackupDrProtectionSummarySettings.java
+++ b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/BackupDrProtectionSummarySettings.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -96,6 +97,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupDrProtectionSummarySettings
     extends ClientSettings<BackupDrProtectionSummarySettings> {
diff --git a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/BackupDRStub.java b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/BackupDRStub.java
index 65ea1f8f88fb..4d25f348c78a 100644
--- a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/BackupDRStub.java
+++ b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/BackupDRStub.java
@@ -106,6 +106,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BackupDRStub implements BackgroundResource {
 
diff --git a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/BackupDRStubSettings.java b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/BackupDRStubSettings.java
index f106698739a0..1e347cd455c2 100644
--- a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/BackupDRStubSettings.java
+++ b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/BackupDRStubSettings.java
@@ -140,6 +140,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -215,6 +216,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BackupDRStubSettings extends StubSettings<BackupDRStubSettings> {
diff --git a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/BackupDrProtectionSummaryStub.java b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/BackupDrProtectionSummaryStub.java
index c22658e4ab3a..6bbfcf7ee913 100644
--- a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/BackupDrProtectionSummaryStub.java
+++ b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/BackupDrProtectionSummaryStub.java
@@ -33,6 +33,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BackupDrProtectionSummaryStub implements BackgroundResource {
 
diff --git a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/BackupDrProtectionSummaryStubSettings.java b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/BackupDrProtectionSummaryStubSettings.java
index a27af4c0a800..f4b8f2f37820 100644
--- a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/BackupDrProtectionSummaryStubSettings.java
+++ b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/BackupDrProtectionSummaryStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BackupDrProtectionSummaryStubSettings
diff --git a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/GrpcBackupDRCallableFactory.java b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/GrpcBackupDRCallableFactory.java
index 46dc235625f4..a43586659440 100644
--- a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/GrpcBackupDRCallableFactory.java
+++ b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/GrpcBackupDRCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBackupDRCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/GrpcBackupDRStub.java b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/GrpcBackupDRStub.java
index fb3fbb1e89a7..8b7e22fe4c34 100644
--- a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/GrpcBackupDRStub.java
+++ b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/GrpcBackupDRStub.java
@@ -115,6 +115,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBackupDRStub extends BackupDRStub {
   private static final MethodDescriptor<ListManagementServersRequest, ListManagementServersResponse>
diff --git a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/GrpcBackupDrProtectionSummaryCallableFactory.java b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/GrpcBackupDrProtectionSummaryCallableFactory.java
index ebbb1a7db5e7..00ce73fe049d 100644
--- a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/GrpcBackupDrProtectionSummaryCallableFactory.java
+++ b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/GrpcBackupDrProtectionSummaryCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBackupDrProtectionSummaryCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/GrpcBackupDrProtectionSummaryStub.java b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/GrpcBackupDrProtectionSummaryStub.java
index 04d49081f7bc..21468c7f5f0e 100644
--- a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/GrpcBackupDrProtectionSummaryStub.java
+++ b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/GrpcBackupDrProtectionSummaryStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBackupDrProtectionSummaryStub extends BackupDrProtectionSummaryStub {
   private static final MethodDescriptor<
diff --git a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/HttpJsonBackupDRCallableFactory.java b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/HttpJsonBackupDRCallableFactory.java
index ec397501906e..14327b1561b3 100644
--- a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/HttpJsonBackupDRCallableFactory.java
+++ b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/HttpJsonBackupDRCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBackupDRCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/HttpJsonBackupDRStub.java b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/HttpJsonBackupDRStub.java
index f216e57d3693..2831bfbae450 100644
--- a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/HttpJsonBackupDRStub.java
+++ b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/HttpJsonBackupDRStub.java
@@ -126,6 +126,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -133,6 +134,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBackupDRStub extends BackupDRStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/HttpJsonBackupDrProtectionSummaryCallableFactory.java b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/HttpJsonBackupDrProtectionSummaryCallableFactory.java
index 2f1525027fa4..69c169236790 100644
--- a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/HttpJsonBackupDrProtectionSummaryCallableFactory.java
+++ b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/HttpJsonBackupDrProtectionSummaryCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBackupDrProtectionSummaryCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/HttpJsonBackupDrProtectionSummaryStub.java b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/HttpJsonBackupDrProtectionSummaryStub.java
index 21aa3cbc569d..279767644ea4 100644
--- a/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/HttpJsonBackupDrProtectionSummaryStub.java
+++ b/java-backupdr/google-cloud-backupdr/src/main/java/com/google/cloud/backupdr/v1/stub/HttpJsonBackupDrProtectionSummaryStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBackupDrProtectionSummaryStub extends BackupDrProtectionSummaryStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupName.java b/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupName.java
index a687be75c9f7..1682b7802878 100644
--- a/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupName.java
+++ b/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUPVAULT_DATASOURCE_BACKUP =
diff --git a/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupPlanAssociationName.java b/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupPlanAssociationName.java
index 54bcdce50c33..3c7b0e2b7049 100644
--- a/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupPlanAssociationName.java
+++ b/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupPlanAssociationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupPlanAssociationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP_PLAN_ASSOCIATION =
diff --git a/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupPlanName.java b/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupPlanName.java
index c04109f86285..3f4be8ff2b8b 100644
--- a/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupPlanName.java
+++ b/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupPlanName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupPlanName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP_PLAN =
diff --git a/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupPlanRevisionName.java b/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupPlanRevisionName.java
index e696721a132a..c5bd28a08ff2 100644
--- a/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupPlanRevisionName.java
+++ b/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupPlanRevisionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupPlanRevisionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP_PLAN_REVISION =
diff --git a/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupVaultName.java b/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupVaultName.java
index 2f7cc3c2e058..adc3bd1f7aba 100644
--- a/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupVaultName.java
+++ b/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/BackupVaultName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupVaultName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUPVAULT =
diff --git a/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/DataSourceName.java b/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/DataSourceName.java
index 30b79f11c9e1..bf6da8f22690 100644
--- a/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/DataSourceName.java
+++ b/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/DataSourceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataSourceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUPVAULT_DATASOURCE =
diff --git a/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/DataSourceReferenceName.java b/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/DataSourceReferenceName.java
index a1b722b96b43..643aacfed9ed 100644
--- a/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/DataSourceReferenceName.java
+++ b/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/DataSourceReferenceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataSourceReferenceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_SOURCE_REFERENCE =
diff --git a/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/LocationName.java b/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/LocationName.java
index 7720d553b446..bda3b9de7144 100644
--- a/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/LocationName.java
+++ b/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/ManagementServerName.java b/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/ManagementServerName.java
index 6dec67ede4d5..09b2a21e6023 100644
--- a/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/ManagementServerName.java
+++ b/java-backupdr/proto-google-cloud-backupdr-v1/src/main/java/com/google/cloud/backupdr/v1/ManagementServerName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ManagementServerName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MANAGEMENTSERVER =
diff --git a/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/BareMetalSolutionClient.java b/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/BareMetalSolutionClient.java
index eb0107f5c5db..d1b75ca2e2d8 100644
--- a/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/BareMetalSolutionClient.java
+++ b/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/BareMetalSolutionClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1024,6 +1025,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BareMetalSolutionClient implements BackgroundResource {
   private final BareMetalSolutionSettings settings;
diff --git a/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/BareMetalSolutionSettings.java b/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/BareMetalSolutionSettings.java
index 285da8d1ae26..d1c5e15be64e 100644
--- a/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/BareMetalSolutionSettings.java
+++ b/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/BareMetalSolutionSettings.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -128,6 +129,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BareMetalSolutionSettings extends ClientSettings<BareMetalSolutionSettings> {
 
diff --git a/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/BareMetalSolutionStub.java b/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/BareMetalSolutionStub.java
index dde67f86b9e8..d821698ef615 100644
--- a/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/BareMetalSolutionStub.java
+++ b/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/BareMetalSolutionStub.java
@@ -107,6 +107,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BareMetalSolutionStub implements BackgroundResource {
 
diff --git a/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/BareMetalSolutionStubSettings.java b/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/BareMetalSolutionStubSettings.java
index 7bf990584cb5..f0a52d641d73 100644
--- a/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/BareMetalSolutionStubSettings.java
+++ b/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/BareMetalSolutionStubSettings.java
@@ -143,6 +143,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -222,6 +223,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BareMetalSolutionStubSettings extends StubSettings<BareMetalSolutionStubSettings> {
diff --git a/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/GrpcBareMetalSolutionCallableFactory.java b/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/GrpcBareMetalSolutionCallableFactory.java
index 48753f469e23..559992e85bb5 100644
--- a/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/GrpcBareMetalSolutionCallableFactory.java
+++ b/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/GrpcBareMetalSolutionCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBareMetalSolutionCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/GrpcBareMetalSolutionStub.java b/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/GrpcBareMetalSolutionStub.java
index 29aa59c8b4a6..a26edf22a603 100644
--- a/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/GrpcBareMetalSolutionStub.java
+++ b/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/GrpcBareMetalSolutionStub.java
@@ -116,6 +116,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBareMetalSolutionStub extends BareMetalSolutionStub {
   private static final MethodDescriptor<ListInstancesRequest, ListInstancesResponse>
diff --git a/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/HttpJsonBareMetalSolutionCallableFactory.java b/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/HttpJsonBareMetalSolutionCallableFactory.java
index 1fd9cb2e9241..452376d1a231 100644
--- a/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/HttpJsonBareMetalSolutionCallableFactory.java
+++ b/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/HttpJsonBareMetalSolutionCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBareMetalSolutionCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/HttpJsonBareMetalSolutionStub.java b/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/HttpJsonBareMetalSolutionStub.java
index 8b257b61dbe9..0f7a0a44212e 100644
--- a/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/HttpJsonBareMetalSolutionStub.java
+++ b/java-bare-metal-solution/google-cloud-bare-metal-solution/src/main/java/com/google/cloud/baremetalsolution/v2/stub/HttpJsonBareMetalSolutionStub.java
@@ -125,6 +125,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBareMetalSolutionStub extends BareMetalSolutionStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/InstanceName.java b/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/InstanceName.java
index 5b6e38674ad4..aaa5e639d576 100644
--- a/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/InstanceName.java
+++ b/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/LocationName.java b/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/LocationName.java
index a03ead597491..8ba4c08a3e41 100644
--- a/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/LocationName.java
+++ b/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/LunName.java b/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/LunName.java
index b78c91aff7b2..2becbcff10a9 100644
--- a/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/LunName.java
+++ b/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/LunName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LunName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_VOLUME_LUN =
diff --git a/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/NFSShareName.java b/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/NFSShareName.java
index a7fb9a24a93c..bec082bb2f31 100644
--- a/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/NFSShareName.java
+++ b/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/NFSShareName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NFSShareName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NFS_SHARE =
diff --git a/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/NetworkName.java b/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/NetworkName.java
index 919821b105c9..4192cdae9162 100644
--- a/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/NetworkName.java
+++ b/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/NetworkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NETWORK =
diff --git a/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/ProvisioningConfigName.java b/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/ProvisioningConfigName.java
index 973cf3c5dc21..ed10ef3da865 100644
--- a/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/ProvisioningConfigName.java
+++ b/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/ProvisioningConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProvisioningConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PROVISIONING_CONFIG =
diff --git a/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/SshKeyName.java b/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/SshKeyName.java
index c602f3a130fe..8bb3679a9764 100644
--- a/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/SshKeyName.java
+++ b/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/SshKeyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SshKeyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SSH_KEY =
diff --git a/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/VolumeName.java b/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/VolumeName.java
index 2b78dd93a75a..e796cad167fe 100644
--- a/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/VolumeName.java
+++ b/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/VolumeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VolumeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_VOLUME =
diff --git a/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/VolumeSnapshotName.java b/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/VolumeSnapshotName.java
index 9ff27862981d..6153417ad1a4 100644
--- a/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/VolumeSnapshotName.java
+++ b/java-bare-metal-solution/proto-google-cloud-bare-metal-solution-v2/src/main/java/com/google/cloud/baremetalsolution/v2/VolumeSnapshotName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VolumeSnapshotName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_VOLUME_SNAPSHOT =
diff --git a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/BatchServiceClient.java b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/BatchServiceClient.java
index 7b45e9d0c16d..682dcde66c59 100644
--- a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/BatchServiceClient.java
+++ b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/BatchServiceClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -292,6 +293,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BatchServiceClient implements BackgroundResource {
   private final BatchServiceSettings settings;
diff --git a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/BatchServiceSettings.java b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/BatchServiceSettings.java
index 6f45406b3cdc..9774f20a270c 100644
--- a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/BatchServiceSettings.java
+++ b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/BatchServiceSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BatchServiceSettings extends ClientSettings<BatchServiceSettings> {
 
diff --git a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/BatchServiceStub.java b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/BatchServiceStub.java
index ad79a9634f78..f39fa0f24800 100644
--- a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/BatchServiceStub.java
+++ b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/BatchServiceStub.java
@@ -44,6 +44,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BatchServiceStub implements BackgroundResource {
 
diff --git a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/BatchServiceStubSettings.java b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/BatchServiceStubSettings.java
index e0207e4098c0..dbc7bed89055 100644
--- a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/BatchServiceStubSettings.java
+++ b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/BatchServiceStubSettings.java
@@ -78,6 +78,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BatchServiceStubSettings extends StubSettings<BatchServiceStubSettings> {
diff --git a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/GrpcBatchServiceCallableFactory.java b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/GrpcBatchServiceCallableFactory.java
index 8deb10468421..dd02a8d766c3 100644
--- a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/GrpcBatchServiceCallableFactory.java
+++ b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/GrpcBatchServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBatchServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/GrpcBatchServiceStub.java b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/GrpcBatchServiceStub.java
index 5766f4cb63d5..b8c87965efca 100644
--- a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/GrpcBatchServiceStub.java
+++ b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/GrpcBatchServiceStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBatchServiceStub extends BatchServiceStub {
   private static final MethodDescriptor<CreateJobRequest, Job> createJobMethodDescriptor =
diff --git a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/HttpJsonBatchServiceCallableFactory.java b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/HttpJsonBatchServiceCallableFactory.java
index 98504df26ece..d10ae1298c6d 100644
--- a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/HttpJsonBatchServiceCallableFactory.java
+++ b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/HttpJsonBatchServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBatchServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/HttpJsonBatchServiceStub.java b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/HttpJsonBatchServiceStub.java
index e1b12d027971..0453c4aab400 100644
--- a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/HttpJsonBatchServiceStub.java
+++ b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1/stub/HttpJsonBatchServiceStub.java
@@ -64,6 +64,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBatchServiceStub extends BatchServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/BatchServiceClient.java b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/BatchServiceClient.java
index 6fd1999ebeaa..753d91b817ab 100644
--- a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/BatchServiceClient.java
+++ b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/BatchServiceClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -407,6 +408,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class BatchServiceClient implements BackgroundResource {
diff --git a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/BatchServiceSettings.java b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/BatchServiceSettings.java
index ddb824972cfa..c9d4f1441e6b 100644
--- a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/BatchServiceSettings.java
+++ b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/BatchServiceSettings.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class BatchServiceSettings extends ClientSettings<BatchServiceSettings> {
diff --git a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/BatchServiceStub.java b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/BatchServiceStub.java
index 97f1234e3dec..7d807d3634fb 100644
--- a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/BatchServiceStub.java
+++ b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/BatchServiceStub.java
@@ -54,6 +54,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class BatchServiceStub implements BackgroundResource {
diff --git a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/BatchServiceStubSettings.java b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/BatchServiceStubSettings.java
index 810570d1605b..ac9d30bbfb36 100644
--- a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/BatchServiceStubSettings.java
+++ b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/BatchServiceStubSettings.java
@@ -87,6 +87,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -164,6 +165,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/GrpcBatchServiceCallableFactory.java b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/GrpcBatchServiceCallableFactory.java
index ede3eaddfee6..ef9f34027e9d 100644
--- a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/GrpcBatchServiceCallableFactory.java
+++ b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/GrpcBatchServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcBatchServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/GrpcBatchServiceStub.java b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/GrpcBatchServiceStub.java
index 9bbcc99afe5b..5e53ca8bf33d 100644
--- a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/GrpcBatchServiceStub.java
+++ b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/GrpcBatchServiceStub.java
@@ -63,6 +63,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcBatchServiceStub extends BatchServiceStub {
diff --git a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/HttpJsonBatchServiceCallableFactory.java b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/HttpJsonBatchServiceCallableFactory.java
index 5487ef2f17b3..c454eb6fc1e5 100644
--- a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/HttpJsonBatchServiceCallableFactory.java
+++ b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/HttpJsonBatchServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonBatchServiceCallableFactory
diff --git a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/HttpJsonBatchServiceStub.java b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/HttpJsonBatchServiceStub.java
index 4a02535be6d5..2533d0f70c34 100644
--- a/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/HttpJsonBatchServiceStub.java
+++ b/java-batch/google-cloud-batch/src/main/java/com/google/cloud/batch/v1alpha/stub/HttpJsonBatchServiceStub.java
@@ -74,6 +74,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonBatchServiceStub extends BatchServiceStub {
diff --git a/java-batch/proto-google-cloud-batch-v1/src/main/java/com/google/cloud/batch/v1/JobName.java b/java-batch/proto-google-cloud-batch-v1/src/main/java/com/google/cloud/batch/v1/JobName.java
index 8e9545d7831d..e43850b18a5d 100644
--- a/java-batch/proto-google-cloud-batch-v1/src/main/java/com/google/cloud/batch/v1/JobName.java
+++ b/java-batch/proto-google-cloud-batch-v1/src/main/java/com/google/cloud/batch/v1/JobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_JOB =
diff --git a/java-batch/proto-google-cloud-batch-v1/src/main/java/com/google/cloud/batch/v1/LocationName.java b/java-batch/proto-google-cloud-batch-v1/src/main/java/com/google/cloud/batch/v1/LocationName.java
index 5e19f2c484dd..c4a169c46b3b 100644
--- a/java-batch/proto-google-cloud-batch-v1/src/main/java/com/google/cloud/batch/v1/LocationName.java
+++ b/java-batch/proto-google-cloud-batch-v1/src/main/java/com/google/cloud/batch/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-batch/proto-google-cloud-batch-v1/src/main/java/com/google/cloud/batch/v1/TaskGroupName.java b/java-batch/proto-google-cloud-batch-v1/src/main/java/com/google/cloud/batch/v1/TaskGroupName.java
index ad9f8a924384..afd3d00119e3 100644
--- a/java-batch/proto-google-cloud-batch-v1/src/main/java/com/google/cloud/batch/v1/TaskGroupName.java
+++ b/java-batch/proto-google-cloud-batch-v1/src/main/java/com/google/cloud/batch/v1/TaskGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TaskGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_JOB_TASK_GROUP =
diff --git a/java-batch/proto-google-cloud-batch-v1/src/main/java/com/google/cloud/batch/v1/TaskName.java b/java-batch/proto-google-cloud-batch-v1/src/main/java/com/google/cloud/batch/v1/TaskName.java
index 4aad161e519c..a59f14aacb9f 100644
--- a/java-batch/proto-google-cloud-batch-v1/src/main/java/com/google/cloud/batch/v1/TaskName.java
+++ b/java-batch/proto-google-cloud-batch-v1/src/main/java/com/google/cloud/batch/v1/TaskName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TaskName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_JOB_TASK_GROUP_TASK =
diff --git a/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/JobName.java b/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/JobName.java
index 515a7bf76c66..4e5bfe95532c 100644
--- a/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/JobName.java
+++ b/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/JobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_JOB =
diff --git a/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/LocationName.java b/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/LocationName.java
index 61d61a717935..91b1b3ccacef 100644
--- a/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/LocationName.java
+++ b/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/ResourceAllowanceName.java b/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/ResourceAllowanceName.java
index ad7c262ddb82..69d2d03b4b52 100644
--- a/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/ResourceAllowanceName.java
+++ b/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/ResourceAllowanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ResourceAllowanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RESOURCE_ALLOWANCE =
diff --git a/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/TaskGroupName.java b/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/TaskGroupName.java
index 9d2668ba6d45..018ce0dda219 100644
--- a/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/TaskGroupName.java
+++ b/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/TaskGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TaskGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_JOB_TASK_GROUP =
diff --git a/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/TaskName.java b/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/TaskName.java
index a05621c5292a..22b0c0dfaa92 100644
--- a/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/TaskName.java
+++ b/java-batch/proto-google-cloud-batch-v1alpha/src/main/java/com/google/cloud/batch/v1alpha/TaskName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TaskName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_JOB_TASK_GROUP_TASK =
diff --git a/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/AppConnectionsServiceClient.java b/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/AppConnectionsServiceClient.java
index fbb1a12a7385..7759e63a7e61 100644
--- a/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/AppConnectionsServiceClient.java
+++ b/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/AppConnectionsServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -326,6 +327,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppConnectionsServiceClient implements BackgroundResource {
   private final AppConnectionsServiceSettings settings;
diff --git a/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/AppConnectionsServiceSettings.java b/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/AppConnectionsServiceSettings.java
index a527fdc9ec33..8897701a7c53 100644
--- a/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/AppConnectionsServiceSettings.java
+++ b/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/AppConnectionsServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppConnectionsServiceSettings extends ClientSettings<AppConnectionsServiceSettings> {
 
diff --git a/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/stub/AppConnectionsServiceStub.java b/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/stub/AppConnectionsServiceStub.java
index 6f77943e6cf4..ae1cbe2a6062 100644
--- a/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/stub/AppConnectionsServiceStub.java
+++ b/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/stub/AppConnectionsServiceStub.java
@@ -46,6 +46,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AppConnectionsServiceStub implements BackgroundResource {
 
diff --git a/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/stub/AppConnectionsServiceStubSettings.java b/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/stub/AppConnectionsServiceStubSettings.java
index b630353ae4a5..7dbf6fe257a7 100644
--- a/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/stub/AppConnectionsServiceStubSettings.java
+++ b/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/stub/AppConnectionsServiceStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AppConnectionsServiceStubSettings
diff --git a/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/stub/GrpcAppConnectionsServiceCallableFactory.java b/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/stub/GrpcAppConnectionsServiceCallableFactory.java
index e539cf6f26c5..6d3f86335e5f 100644
--- a/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/stub/GrpcAppConnectionsServiceCallableFactory.java
+++ b/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/stub/GrpcAppConnectionsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAppConnectionsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/stub/GrpcAppConnectionsServiceStub.java b/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/stub/GrpcAppConnectionsServiceStub.java
index 48c318986c37..b7e0a9ba218f 100644
--- a/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/stub/GrpcAppConnectionsServiceStub.java
+++ b/java-beyondcorp-appconnections/google-cloud-beyondcorp-appconnections/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/stub/GrpcAppConnectionsServiceStub.java
@@ -55,6 +55,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAppConnectionsServiceStub extends AppConnectionsServiceStub {
   private static final MethodDescriptor<ListAppConnectionsRequest, ListAppConnectionsResponse>
diff --git a/java-beyondcorp-appconnections/proto-google-cloud-beyondcorp-appconnections-v1/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/AppConnectionName.java b/java-beyondcorp-appconnections/proto-google-cloud-beyondcorp-appconnections-v1/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/AppConnectionName.java
index 23bd1dfb0164..9e4f12379628 100644
--- a/java-beyondcorp-appconnections/proto-google-cloud-beyondcorp-appconnections-v1/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/AppConnectionName.java
+++ b/java-beyondcorp-appconnections/proto-google-cloud-beyondcorp-appconnections-v1/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/AppConnectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppConnectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_CONNECTION =
diff --git a/java-beyondcorp-appconnections/proto-google-cloud-beyondcorp-appconnections-v1/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/AppConnectorName.java b/java-beyondcorp-appconnections/proto-google-cloud-beyondcorp-appconnections-v1/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/AppConnectorName.java
index 920564ec627c..845ab5378cc4 100644
--- a/java-beyondcorp-appconnections/proto-google-cloud-beyondcorp-appconnections-v1/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/AppConnectorName.java
+++ b/java-beyondcorp-appconnections/proto-google-cloud-beyondcorp-appconnections-v1/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/AppConnectorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppConnectorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_CONNECTOR =
diff --git a/java-beyondcorp-appconnections/proto-google-cloud-beyondcorp-appconnections-v1/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/LocationName.java b/java-beyondcorp-appconnections/proto-google-cloud-beyondcorp-appconnections-v1/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/LocationName.java
index a257220eac02..02df0e3caacb 100644
--- a/java-beyondcorp-appconnections/proto-google-cloud-beyondcorp-appconnections-v1/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/LocationName.java
+++ b/java-beyondcorp-appconnections/proto-google-cloud-beyondcorp-appconnections-v1/src/main/java/com/google/cloud/beyondcorp/appconnections/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/AppConnectorsServiceClient.java b/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/AppConnectorsServiceClient.java
index 4ed336dc33b0..90f2525dbbb2 100644
--- a/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/AppConnectorsServiceClient.java
+++ b/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/AppConnectorsServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -326,6 +327,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppConnectorsServiceClient implements BackgroundResource {
   private final AppConnectorsServiceSettings settings;
diff --git a/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/AppConnectorsServiceSettings.java b/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/AppConnectorsServiceSettings.java
index eb80c955563a..1e0a754b641b 100644
--- a/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/AppConnectorsServiceSettings.java
+++ b/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/AppConnectorsServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppConnectorsServiceSettings extends ClientSettings<AppConnectorsServiceSettings> {
 
diff --git a/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/stub/AppConnectorsServiceStub.java b/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/stub/AppConnectorsServiceStub.java
index 248e7e8c0e36..0aaa14ab361d 100644
--- a/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/stub/AppConnectorsServiceStub.java
+++ b/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/stub/AppConnectorsServiceStub.java
@@ -44,6 +44,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AppConnectorsServiceStub implements BackgroundResource {
 
diff --git a/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/stub/AppConnectorsServiceStubSettings.java b/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/stub/AppConnectorsServiceStubSettings.java
index fa4d606d7a5f..85e0ce857cc5 100644
--- a/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/stub/AppConnectorsServiceStubSettings.java
+++ b/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/stub/AppConnectorsServiceStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AppConnectorsServiceStubSettings
diff --git a/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/stub/GrpcAppConnectorsServiceCallableFactory.java b/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/stub/GrpcAppConnectorsServiceCallableFactory.java
index 7deb8af0042b..4962a8699159 100644
--- a/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/stub/GrpcAppConnectorsServiceCallableFactory.java
+++ b/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/stub/GrpcAppConnectorsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAppConnectorsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/stub/GrpcAppConnectorsServiceStub.java b/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/stub/GrpcAppConnectorsServiceStub.java
index 15e5003bb97c..681afdea8858 100644
--- a/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/stub/GrpcAppConnectorsServiceStub.java
+++ b/java-beyondcorp-appconnectors/google-cloud-beyondcorp-appconnectors/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/stub/GrpcAppConnectorsServiceStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAppConnectorsServiceStub extends AppConnectorsServiceStub {
   private static final MethodDescriptor<ListAppConnectorsRequest, ListAppConnectorsResponse>
diff --git a/java-beyondcorp-appconnectors/proto-google-cloud-beyondcorp-appconnectors-v1/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/AppConnectorName.java b/java-beyondcorp-appconnectors/proto-google-cloud-beyondcorp-appconnectors-v1/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/AppConnectorName.java
index 8f0debe07de2..dc9219315e68 100644
--- a/java-beyondcorp-appconnectors/proto-google-cloud-beyondcorp-appconnectors-v1/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/AppConnectorName.java
+++ b/java-beyondcorp-appconnectors/proto-google-cloud-beyondcorp-appconnectors-v1/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/AppConnectorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppConnectorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_CONNECTOR =
diff --git a/java-beyondcorp-appconnectors/proto-google-cloud-beyondcorp-appconnectors-v1/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/LocationName.java b/java-beyondcorp-appconnectors/proto-google-cloud-beyondcorp-appconnectors-v1/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/LocationName.java
index b86d3d5a7fe7..492ea555f0e8 100644
--- a/java-beyondcorp-appconnectors/proto-google-cloud-beyondcorp-appconnectors-v1/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/LocationName.java
+++ b/java-beyondcorp-appconnectors/proto-google-cloud-beyondcorp-appconnectors-v1/src/main/java/com/google/cloud/beyondcorp/appconnectors/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/AppGatewaysServiceClient.java b/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/AppGatewaysServiceClient.java
index cd8ec566438f..1c00883d9d16 100644
--- a/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/AppGatewaysServiceClient.java
+++ b/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/AppGatewaysServiceClient.java
@@ -45,6 +45,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -285,6 +286,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppGatewaysServiceClient implements BackgroundResource {
   private final AppGatewaysServiceSettings settings;
diff --git a/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/AppGatewaysServiceSettings.java b/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/AppGatewaysServiceSettings.java
index d073fdd4a865..ee3c3a724c70 100644
--- a/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/AppGatewaysServiceSettings.java
+++ b/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/AppGatewaysServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppGatewaysServiceSettings extends ClientSettings<AppGatewaysServiceSettings> {
 
diff --git a/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/stub/AppGatewaysServiceStub.java b/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/stub/AppGatewaysServiceStub.java
index a9cf6065ffcf..e43ce5a6ae9f 100644
--- a/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/stub/AppGatewaysServiceStub.java
+++ b/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/stub/AppGatewaysServiceStub.java
@@ -42,6 +42,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AppGatewaysServiceStub implements BackgroundResource {
 
diff --git a/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/stub/AppGatewaysServiceStubSettings.java b/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/stub/AppGatewaysServiceStubSettings.java
index 109e54a3ac57..8d003a14054d 100644
--- a/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/stub/AppGatewaysServiceStubSettings.java
+++ b/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/stub/AppGatewaysServiceStubSettings.java
@@ -72,6 +72,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AppGatewaysServiceStubSettings extends StubSettings<AppGatewaysServiceStubSettings> {
diff --git a/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/stub/GrpcAppGatewaysServiceCallableFactory.java b/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/stub/GrpcAppGatewaysServiceCallableFactory.java
index aabd355a9f48..acd608fc12ab 100644
--- a/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/stub/GrpcAppGatewaysServiceCallableFactory.java
+++ b/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/stub/GrpcAppGatewaysServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAppGatewaysServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/stub/GrpcAppGatewaysServiceStub.java b/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/stub/GrpcAppGatewaysServiceStub.java
index 4b7c76d5d0b1..6fb3ab85e61f 100644
--- a/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/stub/GrpcAppGatewaysServiceStub.java
+++ b/java-beyondcorp-appgateways/google-cloud-beyondcorp-appgateways/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/stub/GrpcAppGatewaysServiceStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAppGatewaysServiceStub extends AppGatewaysServiceStub {
   private static final MethodDescriptor<ListAppGatewaysRequest, ListAppGatewaysResponse>
diff --git a/java-beyondcorp-appgateways/proto-google-cloud-beyondcorp-appgateways-v1/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/AppGatewayName.java b/java-beyondcorp-appgateways/proto-google-cloud-beyondcorp-appgateways-v1/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/AppGatewayName.java
index aa2302562ead..4736d3650a1d 100644
--- a/java-beyondcorp-appgateways/proto-google-cloud-beyondcorp-appgateways-v1/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/AppGatewayName.java
+++ b/java-beyondcorp-appgateways/proto-google-cloud-beyondcorp-appgateways-v1/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/AppGatewayName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppGatewayName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_GATEWAY =
diff --git a/java-beyondcorp-appgateways/proto-google-cloud-beyondcorp-appgateways-v1/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/LocationName.java b/java-beyondcorp-appgateways/proto-google-cloud-beyondcorp-appgateways-v1/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/LocationName.java
index 38bebc8e2b48..c03b12268120 100644
--- a/java-beyondcorp-appgateways/proto-google-cloud-beyondcorp-appgateways-v1/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/LocationName.java
+++ b/java-beyondcorp-appgateways/proto-google-cloud-beyondcorp-appgateways-v1/src/main/java/com/google/cloud/beyondcorp/appgateways/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/ClientConnectorServicesServiceClient.java b/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/ClientConnectorServicesServiceClient.java
index 101c17bf2dbf..0f6f14219cfb 100644
--- a/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/ClientConnectorServicesServiceClient.java
+++ b/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/ClientConnectorServicesServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -305,6 +306,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClientConnectorServicesServiceClient implements BackgroundResource {
   private final ClientConnectorServicesServiceSettings settings;
diff --git a/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/ClientConnectorServicesServiceSettings.java b/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/ClientConnectorServicesServiceSettings.java
index 6923e0dba7c5..0fb514253205 100644
--- a/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/ClientConnectorServicesServiceSettings.java
+++ b/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/ClientConnectorServicesServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClientConnectorServicesServiceSettings
     extends ClientSettings<ClientConnectorServicesServiceSettings> {
diff --git a/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/stub/ClientConnectorServicesServiceStub.java b/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/stub/ClientConnectorServicesServiceStub.java
index 733cc25e0127..345c50363207 100644
--- a/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/stub/ClientConnectorServicesServiceStub.java
+++ b/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/stub/ClientConnectorServicesServiceStub.java
@@ -43,6 +43,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ClientConnectorServicesServiceStub implements BackgroundResource {
 
diff --git a/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/stub/ClientConnectorServicesServiceStubSettings.java b/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/stub/ClientConnectorServicesServiceStubSettings.java
index 9471df828691..d130ee9250e2 100644
--- a/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/stub/ClientConnectorServicesServiceStubSettings.java
+++ b/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/stub/ClientConnectorServicesServiceStubSettings.java
@@ -73,6 +73,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ClientConnectorServicesServiceStubSettings
diff --git a/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/stub/GrpcClientConnectorServicesServiceCallableFactory.java b/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/stub/GrpcClientConnectorServicesServiceCallableFactory.java
index 8d0d165f3946..aec2e2cac8a6 100644
--- a/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/stub/GrpcClientConnectorServicesServiceCallableFactory.java
+++ b/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/stub/GrpcClientConnectorServicesServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcClientConnectorServicesServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/stub/GrpcClientConnectorServicesServiceStub.java b/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/stub/GrpcClientConnectorServicesServiceStub.java
index 476c5a468b38..9d793cb6adf8 100644
--- a/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/stub/GrpcClientConnectorServicesServiceStub.java
+++ b/java-beyondcorp-clientconnectorservices/google-cloud-beyondcorp-clientconnectorservices/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/stub/GrpcClientConnectorServicesServiceStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcClientConnectorServicesServiceStub extends ClientConnectorServicesServiceStub {
   private static final MethodDescriptor<
diff --git a/java-beyondcorp-clientconnectorservices/proto-google-cloud-beyondcorp-clientconnectorservices-v1/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/ClientConnectorServiceName.java b/java-beyondcorp-clientconnectorservices/proto-google-cloud-beyondcorp-clientconnectorservices-v1/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/ClientConnectorServiceName.java
index e7417c036c0c..f8aa19de03ef 100644
--- a/java-beyondcorp-clientconnectorservices/proto-google-cloud-beyondcorp-clientconnectorservices-v1/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/ClientConnectorServiceName.java
+++ b/java-beyondcorp-clientconnectorservices/proto-google-cloud-beyondcorp-clientconnectorservices-v1/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/ClientConnectorServiceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClientConnectorServiceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLIENT_CONNECTOR_SERVICE =
diff --git a/java-beyondcorp-clientconnectorservices/proto-google-cloud-beyondcorp-clientconnectorservices-v1/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/LocationName.java b/java-beyondcorp-clientconnectorservices/proto-google-cloud-beyondcorp-clientconnectorservices-v1/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/LocationName.java
index 815964f00772..8df3b01212c3 100644
--- a/java-beyondcorp-clientconnectorservices/proto-google-cloud-beyondcorp-clientconnectorservices-v1/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/LocationName.java
+++ b/java-beyondcorp-clientconnectorservices/proto-google-cloud-beyondcorp-clientconnectorservices-v1/src/main/java/com/google/cloud/beyondcorp/clientconnectorservices/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/ClientGatewaysServiceClient.java b/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/ClientGatewaysServiceClient.java
index aa184795e561..54550dc6eb9e 100644
--- a/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/ClientGatewaysServiceClient.java
+++ b/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/ClientGatewaysServiceClient.java
@@ -45,6 +45,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -283,6 +284,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClientGatewaysServiceClient implements BackgroundResource {
   private final ClientGatewaysServiceSettings settings;
diff --git a/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/ClientGatewaysServiceSettings.java b/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/ClientGatewaysServiceSettings.java
index 3414578f0025..67fd87c79a65 100644
--- a/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/ClientGatewaysServiceSettings.java
+++ b/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/ClientGatewaysServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClientGatewaysServiceSettings extends ClientSettings<ClientGatewaysServiceSettings> {
 
diff --git a/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/stub/ClientGatewaysServiceStub.java b/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/stub/ClientGatewaysServiceStub.java
index 88bf472b9fe0..2aae5e9fab8f 100644
--- a/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/stub/ClientGatewaysServiceStub.java
+++ b/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/stub/ClientGatewaysServiceStub.java
@@ -42,6 +42,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ClientGatewaysServiceStub implements BackgroundResource {
 
diff --git a/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/stub/ClientGatewaysServiceStubSettings.java b/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/stub/ClientGatewaysServiceStubSettings.java
index b40066c44719..018b5da5c95b 100644
--- a/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/stub/ClientGatewaysServiceStubSettings.java
+++ b/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/stub/ClientGatewaysServiceStubSettings.java
@@ -72,6 +72,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ClientGatewaysServiceStubSettings
diff --git a/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/stub/GrpcClientGatewaysServiceCallableFactory.java b/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/stub/GrpcClientGatewaysServiceCallableFactory.java
index 479fa118d143..6749d50d3597 100644
--- a/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/stub/GrpcClientGatewaysServiceCallableFactory.java
+++ b/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/stub/GrpcClientGatewaysServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcClientGatewaysServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/stub/GrpcClientGatewaysServiceStub.java b/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/stub/GrpcClientGatewaysServiceStub.java
index b3c8a0b9e005..569a8a32d01d 100644
--- a/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/stub/GrpcClientGatewaysServiceStub.java
+++ b/java-beyondcorp-clientgateways/google-cloud-beyondcorp-clientgateways/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/stub/GrpcClientGatewaysServiceStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcClientGatewaysServiceStub extends ClientGatewaysServiceStub {
   private static final MethodDescriptor<ListClientGatewaysRequest, ListClientGatewaysResponse>
diff --git a/java-beyondcorp-clientgateways/proto-google-cloud-beyondcorp-clientgateways-v1/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/ClientGatewayName.java b/java-beyondcorp-clientgateways/proto-google-cloud-beyondcorp-clientgateways-v1/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/ClientGatewayName.java
index e814e8f34182..00ca2370d925 100644
--- a/java-beyondcorp-clientgateways/proto-google-cloud-beyondcorp-clientgateways-v1/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/ClientGatewayName.java
+++ b/java-beyondcorp-clientgateways/proto-google-cloud-beyondcorp-clientgateways-v1/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/ClientGatewayName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClientGatewayName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLIENT_GATEWAY =
diff --git a/java-beyondcorp-clientgateways/proto-google-cloud-beyondcorp-clientgateways-v1/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/LocationName.java b/java-beyondcorp-clientgateways/proto-google-cloud-beyondcorp-clientgateways-v1/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/LocationName.java
index 6c5847b445c3..9cc855affe4f 100644
--- a/java-beyondcorp-clientgateways/proto-google-cloud-beyondcorp-clientgateways-v1/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/LocationName.java
+++ b/java-beyondcorp-clientgateways/proto-google-cloud-beyondcorp-clientgateways-v1/src/main/java/com/google/cloud/beyondcorp/clientgateways/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/HiveMetastoreServiceClient.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/HiveMetastoreServiceClient.java
index 6041667d56b2..1edcf82d44b5 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/HiveMetastoreServiceClient.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/HiveMetastoreServiceClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -493,6 +494,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HiveMetastoreServiceClient implements BackgroundResource {
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/HiveMetastoreServiceSettings.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/HiveMetastoreServiceSettings.java
index dd1239e06dc1..6fdc2a5f0d52 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/HiveMetastoreServiceSettings.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/HiveMetastoreServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HiveMetastoreServiceSettings extends ClientSettings<HiveMetastoreServiceSettings> {
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/GrpcHiveMetastoreServiceCallableFactory.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/GrpcHiveMetastoreServiceCallableFactory.java
index 3c579f5837f8..b03862364f33 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/GrpcHiveMetastoreServiceCallableFactory.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/GrpcHiveMetastoreServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcHiveMetastoreServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/GrpcHiveMetastoreServiceStub.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/GrpcHiveMetastoreServiceStub.java
index 8e5a6d3b3d94..28c0d847920b 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/GrpcHiveMetastoreServiceStub.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/GrpcHiveMetastoreServiceStub.java
@@ -64,6 +64,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcHiveMetastoreServiceStub extends HiveMetastoreServiceStub {
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/HiveMetastoreServiceStub.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/HiveMetastoreServiceStub.java
index d809f5a0f394..f55950943f81 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/HiveMetastoreServiceStub.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/HiveMetastoreServiceStub.java
@@ -54,6 +54,7 @@
 import com.google.cloud.biglake.hive.v1beta.UpdateHiveTableRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class HiveMetastoreServiceStub implements BackgroundResource {
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/HiveMetastoreServiceStubSettings.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/HiveMetastoreServiceStubSettings.java
index 06c431432de1..40e72a3deb2f 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/HiveMetastoreServiceStubSettings.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/HiveMetastoreServiceStubSettings.java
@@ -85,6 +85,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/HttpJsonHiveMetastoreServiceCallableFactory.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/HttpJsonHiveMetastoreServiceCallableFactory.java
index 26d4a1041342..9bdf950ce39b 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/HttpJsonHiveMetastoreServiceCallableFactory.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/HttpJsonHiveMetastoreServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonHiveMetastoreServiceCallableFactory
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/HttpJsonHiveMetastoreServiceStub.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/HttpJsonHiveMetastoreServiceStub.java
index 249daae37d81..e289d0532ca0 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/HttpJsonHiveMetastoreServiceStub.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/hive/v1beta/stub/HttpJsonHiveMetastoreServiceStub.java
@@ -71,6 +71,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -78,6 +79,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonHiveMetastoreServiceStub extends HiveMetastoreServiceStub {
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/IcebergCatalogServiceClient.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/IcebergCatalogServiceClient.java
index b2201387dd9c..5e2aab34c7a7 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/IcebergCatalogServiceClient.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/IcebergCatalogServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -221,6 +222,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IcebergCatalogServiceClient implements BackgroundResource {
   private final IcebergCatalogServiceSettings settings;
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/IcebergCatalogServiceSettings.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/IcebergCatalogServiceSettings.java
index f2a0b5497226..14895d56c398 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/IcebergCatalogServiceSettings.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/IcebergCatalogServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IcebergCatalogServiceSettings extends ClientSettings<IcebergCatalogServiceSettings> {
 
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/GrpcIcebergCatalogServiceCallableFactory.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/GrpcIcebergCatalogServiceCallableFactory.java
index a8ced170563b..80ae350bc1e2 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/GrpcIcebergCatalogServiceCallableFactory.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/GrpcIcebergCatalogServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIcebergCatalogServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/GrpcIcebergCatalogServiceStub.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/GrpcIcebergCatalogServiceStub.java
index d3167fa6bd5a..7d83aa398453 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/GrpcIcebergCatalogServiceStub.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/GrpcIcebergCatalogServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIcebergCatalogServiceStub extends IcebergCatalogServiceStub {
   private static final MethodDescriptor<GetIcebergCatalogRequest, IcebergCatalog>
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/HttpJsonIcebergCatalogServiceCallableFactory.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/HttpJsonIcebergCatalogServiceCallableFactory.java
index 1886d7a74a03..7c03bcd6ba68 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/HttpJsonIcebergCatalogServiceCallableFactory.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/HttpJsonIcebergCatalogServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIcebergCatalogServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/HttpJsonIcebergCatalogServiceStub.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/HttpJsonIcebergCatalogServiceStub.java
index 0f0b4267cff6..302535513945 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/HttpJsonIcebergCatalogServiceStub.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/HttpJsonIcebergCatalogServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIcebergCatalogServiceStub extends IcebergCatalogServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/IcebergCatalogServiceStub.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/IcebergCatalogServiceStub.java
index eb2914912609..929850bf7065 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/IcebergCatalogServiceStub.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/IcebergCatalogServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.biglake.v1.ListIcebergCatalogsResponse;
 import com.google.cloud.biglake.v1.UpdateIcebergCatalogRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class IcebergCatalogServiceStub implements BackgroundResource {
 
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/IcebergCatalogServiceStubSettings.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/IcebergCatalogServiceStubSettings.java
index 7d0d6a8353f4..bb1842efb1f0 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/IcebergCatalogServiceStubSettings.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/biglake/v1/stub/IcebergCatalogServiceStubSettings.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class IcebergCatalogServiceStubSettings
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/MetastoreServiceClient.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/MetastoreServiceClient.java
index 4b58c4b57f0e..a78649d188a0 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/MetastoreServiceClient.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/MetastoreServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -422,6 +423,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetastoreServiceClient implements BackgroundResource {
   private final MetastoreServiceSettings settings;
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/MetastoreServiceSettings.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/MetastoreServiceSettings.java
index 82b1d587e9ba..8e96523ab85d 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/MetastoreServiceSettings.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/MetastoreServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetastoreServiceSettings extends ClientSettings<MetastoreServiceSettings> {
 
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/GrpcMetastoreServiceCallableFactory.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/GrpcMetastoreServiceCallableFactory.java
index 967bc4e8160e..790acf2c6c12 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/GrpcMetastoreServiceCallableFactory.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/GrpcMetastoreServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMetastoreServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/GrpcMetastoreServiceStub.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/GrpcMetastoreServiceStub.java
index c9d46898a742..74a7ab1b445a 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/GrpcMetastoreServiceStub.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/GrpcMetastoreServiceStub.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMetastoreServiceStub extends MetastoreServiceStub {
   private static final MethodDescriptor<CreateCatalogRequest, Catalog>
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/HttpJsonMetastoreServiceCallableFactory.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/HttpJsonMetastoreServiceCallableFactory.java
index 3bac527825b4..3e08a712df6c 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/HttpJsonMetastoreServiceCallableFactory.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/HttpJsonMetastoreServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMetastoreServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/HttpJsonMetastoreServiceStub.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/HttpJsonMetastoreServiceStub.java
index 664cfc9932a5..470a1dac370e 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/HttpJsonMetastoreServiceStub.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/HttpJsonMetastoreServiceStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMetastoreServiceStub extends MetastoreServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/MetastoreServiceStub.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/MetastoreServiceStub.java
index 9d022ad8f2bb..295079cbd35e 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/MetastoreServiceStub.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/MetastoreServiceStub.java
@@ -44,6 +44,7 @@
 import com.google.cloud.bigquery.biglake.v1.UpdateDatabaseRequest;
 import com.google.cloud.bigquery.biglake.v1.UpdateTableRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MetastoreServiceStub implements BackgroundResource {
 
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/MetastoreServiceStubSettings.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/MetastoreServiceStubSettings.java
index 39fffaa1735c..7de00a75d624 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/MetastoreServiceStubSettings.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1/stub/MetastoreServiceStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MetastoreServiceStubSettings extends StubSettings<MetastoreServiceStubSettings> {
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/MetastoreServiceClient.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/MetastoreServiceClient.java
index adc56584fcf1..03112d2c7106 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/MetastoreServiceClient.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/MetastoreServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -501,6 +502,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MetastoreServiceClient implements BackgroundResource {
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/MetastoreServiceSettings.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/MetastoreServiceSettings.java
index 4f7239855d67..0d11d9f234b5 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/MetastoreServiceSettings.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/MetastoreServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MetastoreServiceSettings extends ClientSettings<MetastoreServiceSettings> {
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/GrpcMetastoreServiceCallableFactory.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/GrpcMetastoreServiceCallableFactory.java
index 6e76e4ce6b0b..e0fe2e3bf1b8 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/GrpcMetastoreServiceCallableFactory.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/GrpcMetastoreServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMetastoreServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/GrpcMetastoreServiceStub.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/GrpcMetastoreServiceStub.java
index 09e9eaa180d5..58f4cffbd6e6 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/GrpcMetastoreServiceStub.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/GrpcMetastoreServiceStub.java
@@ -63,6 +63,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMetastoreServiceStub extends MetastoreServiceStub {
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/HttpJsonMetastoreServiceCallableFactory.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/HttpJsonMetastoreServiceCallableFactory.java
index 9b7403e28c15..e9fd2b3d5ab6 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/HttpJsonMetastoreServiceCallableFactory.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/HttpJsonMetastoreServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMetastoreServiceCallableFactory
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/HttpJsonMetastoreServiceStub.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/HttpJsonMetastoreServiceStub.java
index a32e32669e37..6907f80c8a12 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/HttpJsonMetastoreServiceStub.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/HttpJsonMetastoreServiceStub.java
@@ -70,6 +70,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMetastoreServiceStub extends MetastoreServiceStub {
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/MetastoreServiceStub.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/MetastoreServiceStub.java
index eba950f463ad..40121da2d0ee 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/MetastoreServiceStub.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/MetastoreServiceStub.java
@@ -53,6 +53,7 @@
 import com.google.cloud.bigquery.biglake.v1alpha1.UpdateTableRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class MetastoreServiceStub implements BackgroundResource {
diff --git a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/MetastoreServiceStubSettings.java b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/MetastoreServiceStubSettings.java
index 553c803d0dca..3a6832799bb2 100644
--- a/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/MetastoreServiceStubSettings.java
+++ b/java-biglake/google-cloud-biglake/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/stub/MetastoreServiceStubSettings.java
@@ -84,6 +84,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -135,6 +136,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/biglake/v1/CatalogName.java b/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/biglake/v1/CatalogName.java
index bd8617ee6f2f..d3cbc2e83767 100644
--- a/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/biglake/v1/CatalogName.java
+++ b/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/biglake/v1/CatalogName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CatalogName implements ResourceName {
   private static final PathTemplate PROJECT_CATALOG =
diff --git a/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/biglake/v1/ProjectName.java b/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/biglake/v1/ProjectName.java
index 0bb5c8bfe29b..5cda0c61a25a 100644
--- a/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/biglake/v1/ProjectName.java
+++ b/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/biglake/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/bigquery/biglake/v1/CatalogName.java b/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/bigquery/biglake/v1/CatalogName.java
index bd289fc50fc8..3cc65b52fe30 100644
--- a/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/bigquery/biglake/v1/CatalogName.java
+++ b/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/bigquery/biglake/v1/CatalogName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CatalogName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG =
diff --git a/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/bigquery/biglake/v1/DatabaseName.java b/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/bigquery/biglake/v1/DatabaseName.java
index 3246a097928b..822aebb62f7b 100644
--- a/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/bigquery/biglake/v1/DatabaseName.java
+++ b/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/bigquery/biglake/v1/DatabaseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatabaseName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_DATABASE =
diff --git a/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/bigquery/biglake/v1/LocationName.java b/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/bigquery/biglake/v1/LocationName.java
index 338eef226398..c5e04770cead 100644
--- a/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/bigquery/biglake/v1/LocationName.java
+++ b/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/bigquery/biglake/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/bigquery/biglake/v1/TableName.java b/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/bigquery/biglake/v1/TableName.java
index 44400a60342c..4f86c15982c9 100644
--- a/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/bigquery/biglake/v1/TableName.java
+++ b/java-biglake/proto-google-cloud-biglake-v1/src/main/java/com/google/cloud/bigquery/biglake/v1/TableName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TableName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_DATABASE_TABLE =
diff --git a/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/CatalogName.java b/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/CatalogName.java
index 3f6a245e1bf1..e6299bb0024a 100644
--- a/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/CatalogName.java
+++ b/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/CatalogName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CatalogName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG =
diff --git a/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/DatabaseName.java b/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/DatabaseName.java
index 8cf5485b248d..1dc8a0f44a99 100644
--- a/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/DatabaseName.java
+++ b/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/DatabaseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatabaseName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_DATABASE =
diff --git a/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/LocationName.java b/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/LocationName.java
index 49e80d4169fd..c3d172f3127f 100644
--- a/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/LocationName.java
+++ b/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/LockName.java b/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/LockName.java
index e16caba8fe3a..a214dd93cede 100644
--- a/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/LockName.java
+++ b/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/LockName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LockName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_DATABASE_LOCK =
diff --git a/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/TableName.java b/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/TableName.java
index d3cf824a802a..df018f76ffe4 100644
--- a/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/TableName.java
+++ b/java-biglake/proto-google-cloud-biglake-v1alpha1/src/main/java/com/google/cloud/bigquery/biglake/v1alpha1/TableName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TableName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_DATABASE_TABLE =
diff --git a/java-biglake/proto-google-cloud-biglake-v1beta/src/main/java/com/google/cloud/biglake/hive/v1beta/CatalogName.java b/java-biglake/proto-google-cloud-biglake-v1beta/src/main/java/com/google/cloud/biglake/hive/v1beta/CatalogName.java
index 6ac07fdd219f..b622e988db1d 100644
--- a/java-biglake/proto-google-cloud-biglake-v1beta/src/main/java/com/google/cloud/biglake/hive/v1beta/CatalogName.java
+++ b/java-biglake/proto-google-cloud-biglake-v1beta/src/main/java/com/google/cloud/biglake/hive/v1beta/CatalogName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CatalogName implements ResourceName {
   private static final PathTemplate PROJECT_CATALOG =
diff --git a/java-biglake/proto-google-cloud-biglake-v1beta/src/main/java/com/google/cloud/biglake/hive/v1beta/NamespaceName.java b/java-biglake/proto-google-cloud-biglake-v1beta/src/main/java/com/google/cloud/biglake/hive/v1beta/NamespaceName.java
index a510c05362a2..a25d1a4a37fa 100644
--- a/java-biglake/proto-google-cloud-biglake-v1beta/src/main/java/com/google/cloud/biglake/hive/v1beta/NamespaceName.java
+++ b/java-biglake/proto-google-cloud-biglake-v1beta/src/main/java/com/google/cloud/biglake/hive/v1beta/NamespaceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NamespaceName implements ResourceName {
   private static final PathTemplate PROJECT_CATALOG_DATABASE =
diff --git a/java-biglake/proto-google-cloud-biglake-v1beta/src/main/java/com/google/cloud/biglake/hive/v1beta/ProjectName.java b/java-biglake/proto-google-cloud-biglake-v1beta/src/main/java/com/google/cloud/biglake/hive/v1beta/ProjectName.java
index 6f43bea28907..e83cef9a9d28 100644
--- a/java-biglake/proto-google-cloud-biglake-v1beta/src/main/java/com/google/cloud/biglake/hive/v1beta/ProjectName.java
+++ b/java-biglake/proto-google-cloud-biglake-v1beta/src/main/java/com/google/cloud/biglake/hive/v1beta/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-biglake/proto-google-cloud-biglake-v1beta/src/main/java/com/google/cloud/biglake/hive/v1beta/TableName.java b/java-biglake/proto-google-cloud-biglake-v1beta/src/main/java/com/google/cloud/biglake/hive/v1beta/TableName.java
index d8f0f7c47a72..7c6960272dfc 100644
--- a/java-biglake/proto-google-cloud-biglake-v1beta/src/main/java/com/google/cloud/biglake/hive/v1beta/TableName.java
+++ b/java-biglake/proto-google-cloud-biglake-v1beta/src/main/java/com/google/cloud/biglake/hive/v1beta/TableName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TableName implements ResourceName {
   private static final PathTemplate PROJECT_CATALOG_DATABASE_TABLE =
diff --git a/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/AnalyticsHubServiceClient.java b/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/AnalyticsHubServiceClient.java
index d5bb9d08e4bb..b4a0a75a0ca1 100644
--- a/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/AnalyticsHubServiceClient.java
+++ b/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/AnalyticsHubServiceClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -436,6 +437,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AnalyticsHubServiceClient implements BackgroundResource {
diff --git a/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/AnalyticsHubServiceSettings.java b/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/AnalyticsHubServiceSettings.java
index 65e578c02f9a..390ea351a3bb 100644
--- a/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/AnalyticsHubServiceSettings.java
+++ b/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/AnalyticsHubServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AnalyticsHubServiceSettings extends ClientSettings<AnalyticsHubServiceSettings> {
diff --git a/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/AnalyticsHubServiceStub.java b/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/AnalyticsHubServiceStub.java
index 7e8e3ac98122..4092b370e4f8 100644
--- a/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/AnalyticsHubServiceStub.java
+++ b/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/AnalyticsHubServiceStub.java
@@ -53,6 +53,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AnalyticsHubServiceStub implements BackgroundResource {
diff --git a/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/AnalyticsHubServiceStubSettings.java b/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/AnalyticsHubServiceStubSettings.java
index 1e95432f6847..4642faa3de2b 100644
--- a/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/AnalyticsHubServiceStubSettings.java
+++ b/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/AnalyticsHubServiceStubSettings.java
@@ -84,6 +84,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -136,6 +137,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/GrpcAnalyticsHubServiceCallableFactory.java b/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/GrpcAnalyticsHubServiceCallableFactory.java
index 1d8103b10e16..6375cab39755 100644
--- a/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/GrpcAnalyticsHubServiceCallableFactory.java
+++ b/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/GrpcAnalyticsHubServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAnalyticsHubServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/GrpcAnalyticsHubServiceStub.java b/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/GrpcAnalyticsHubServiceStub.java
index 76b0985a7b05..6e07024e96ea 100644
--- a/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/GrpcAnalyticsHubServiceStub.java
+++ b/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/GrpcAnalyticsHubServiceStub.java
@@ -63,6 +63,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAnalyticsHubServiceStub extends AnalyticsHubServiceStub {
diff --git a/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/HttpJsonAnalyticsHubServiceCallableFactory.java b/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/HttpJsonAnalyticsHubServiceCallableFactory.java
index 0fb61f63e268..f5809f2c4c64 100644
--- a/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/HttpJsonAnalyticsHubServiceCallableFactory.java
+++ b/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/HttpJsonAnalyticsHubServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAnalyticsHubServiceCallableFactory
diff --git a/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/HttpJsonAnalyticsHubServiceStub.java b/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/HttpJsonAnalyticsHubServiceStub.java
index bce6523118b5..e29ce211f841 100644
--- a/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/HttpJsonAnalyticsHubServiceStub.java
+++ b/java-bigquery-data-exchange/google-cloud-bigquery-data-exchange/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/stub/HttpJsonAnalyticsHubServiceStub.java
@@ -70,6 +70,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAnalyticsHubServiceStub extends AnalyticsHubServiceStub {
diff --git a/java-bigquery-data-exchange/proto-google-cloud-bigquery-data-exchange-v1beta1/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/DataExchangeName.java b/java-bigquery-data-exchange/proto-google-cloud-bigquery-data-exchange-v1beta1/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/DataExchangeName.java
index fda72f76d744..c3b5239ea6c4 100644
--- a/java-bigquery-data-exchange/proto-google-cloud-bigquery-data-exchange-v1beta1/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/DataExchangeName.java
+++ b/java-bigquery-data-exchange/proto-google-cloud-bigquery-data-exchange-v1beta1/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/DataExchangeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataExchangeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_EXCHANGE =
diff --git a/java-bigquery-data-exchange/proto-google-cloud-bigquery-data-exchange-v1beta1/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/ListingName.java b/java-bigquery-data-exchange/proto-google-cloud-bigquery-data-exchange-v1beta1/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/ListingName.java
index e3c7a084946f..7c6e39e67267 100644
--- a/java-bigquery-data-exchange/proto-google-cloud-bigquery-data-exchange-v1beta1/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/ListingName.java
+++ b/java-bigquery-data-exchange/proto-google-cloud-bigquery-data-exchange-v1beta1/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/ListingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ListingName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_EXCHANGE_LISTING =
diff --git a/java-bigquery-data-exchange/proto-google-cloud-bigquery-data-exchange-v1beta1/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/LocationName.java b/java-bigquery-data-exchange/proto-google-cloud-bigquery-data-exchange-v1beta1/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/LocationName.java
index 896f99a782e0..d99b73b3df2a 100644
--- a/java-bigquery-data-exchange/proto-google-cloud-bigquery-data-exchange-v1beta1/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/LocationName.java
+++ b/java-bigquery-data-exchange/proto-google-cloud-bigquery-data-exchange-v1beta1/src/main/java/com/google/cloud/bigquery/dataexchange/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/ConnectionServiceClient.java b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/ConnectionServiceClient.java
index 2f653aa121f3..24f44e76ff31 100644
--- a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/ConnectionServiceClient.java
+++ b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/ConnectionServiceClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -299,6 +300,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConnectionServiceClient implements BackgroundResource {
diff --git a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/ConnectionServiceSettings.java b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/ConnectionServiceSettings.java
index 2d4ce97b365b..aac05bfcacdd 100644
--- a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/ConnectionServiceSettings.java
+++ b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/ConnectionServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConnectionServiceSettings extends ClientSettings<ConnectionServiceSettings> {
diff --git a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/ConnectionServiceStub.java b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/ConnectionServiceStub.java
index 71caaf34e88e..baa606db5486 100644
--- a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/ConnectionServiceStub.java
+++ b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/ConnectionServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ConnectionServiceStub implements BackgroundResource {
diff --git a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/ConnectionServiceStubSettings.java b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/ConnectionServiceStubSettings.java
index 30073acb6920..c9d5b14c2656 100644
--- a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/ConnectionServiceStubSettings.java
+++ b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/ConnectionServiceStubSettings.java
@@ -51,6 +51,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/GrpcConnectionServiceCallableFactory.java b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/GrpcConnectionServiceCallableFactory.java
index af3fc6b52081..28ca1ad22cb7 100644
--- a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/GrpcConnectionServiceCallableFactory.java
+++ b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/GrpcConnectionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConnectionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/GrpcConnectionServiceStub.java b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/GrpcConnectionServiceStub.java
index 9c52ea4ec59e..af3ae8720787 100644
--- a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/GrpcConnectionServiceStub.java
+++ b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/GrpcConnectionServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConnectionServiceStub extends ConnectionServiceStub {
diff --git a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/HttpJsonConnectionServiceCallableFactory.java b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/HttpJsonConnectionServiceCallableFactory.java
index b13c9c9a5906..128113a28327 100644
--- a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/HttpJsonConnectionServiceCallableFactory.java
+++ b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/HttpJsonConnectionServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConnectionServiceCallableFactory
diff --git a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/HttpJsonConnectionServiceStub.java b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/HttpJsonConnectionServiceStub.java
index ff255b82ca31..425b54ca007b 100644
--- a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/HttpJsonConnectionServiceStub.java
+++ b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigquery/connection/v1beta1/stub/HttpJsonConnectionServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConnectionServiceStub extends ConnectionServiceStub {
diff --git a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/ConnectionServiceClient.java b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/ConnectionServiceClient.java
index 3d2b2fb80117..faae677975fe 100644
--- a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/ConnectionServiceClient.java
+++ b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/ConnectionServiceClient.java
@@ -49,6 +49,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -296,6 +297,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConnectionServiceClient implements BackgroundResource {
   private final ConnectionServiceSettings settings;
diff --git a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/ConnectionServiceSettings.java b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/ConnectionServiceSettings.java
index 51cb37f7423e..ed8935b5bf07 100644
--- a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/ConnectionServiceSettings.java
+++ b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/ConnectionServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConnectionServiceSettings extends ClientSettings<ConnectionServiceSettings> {
 
diff --git a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/ConnectionServiceStub.java b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/ConnectionServiceStub.java
index 0965676e1812..d8b5c30bee99 100644
--- a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/ConnectionServiceStub.java
+++ b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/ConnectionServiceStub.java
@@ -34,6 +34,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ConnectionServiceStub implements BackgroundResource {
 
diff --git a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/ConnectionServiceStubSettings.java b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/ConnectionServiceStubSettings.java
index 120207f171ae..9f320c3a0745 100644
--- a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/ConnectionServiceStubSettings.java
+++ b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/ConnectionServiceStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ConnectionServiceStubSettings extends StubSettings<ConnectionServiceStubSettings> {
diff --git a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/GrpcConnectionServiceCallableFactory.java b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/GrpcConnectionServiceCallableFactory.java
index 37734ac5fd2d..7b142fc669d1 100644
--- a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/GrpcConnectionServiceCallableFactory.java
+++ b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/GrpcConnectionServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConnectionServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/GrpcConnectionServiceStub.java b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/GrpcConnectionServiceStub.java
index d3dd13c7eb48..04bc5dd25a49 100644
--- a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/GrpcConnectionServiceStub.java
+++ b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/GrpcConnectionServiceStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConnectionServiceStub extends ConnectionServiceStub {
   private static final MethodDescriptor<CreateConnectionRequest, Connection>
diff --git a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/HttpJsonConnectionServiceCallableFactory.java b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/HttpJsonConnectionServiceCallableFactory.java
index 7749d1eca6da..64ab8abb1c3e 100644
--- a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/HttpJsonConnectionServiceCallableFactory.java
+++ b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/HttpJsonConnectionServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConnectionServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/HttpJsonConnectionServiceStub.java b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/HttpJsonConnectionServiceStub.java
index 70735988e40a..9ba9387f4da1 100644
--- a/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/HttpJsonConnectionServiceStub.java
+++ b/java-bigqueryconnection/google-cloud-bigqueryconnection/src/main/java/com/google/cloud/bigqueryconnection/v1/stub/HttpJsonConnectionServiceStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConnectionServiceStub extends ConnectionServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-bigqueryconnection/proto-google-cloud-bigqueryconnection-v1/src/main/java/com/google/cloud/bigquery/connection/v1/ConnectionName.java b/java-bigqueryconnection/proto-google-cloud-bigqueryconnection-v1/src/main/java/com/google/cloud/bigquery/connection/v1/ConnectionName.java
index d5dd9772feec..50c4b19b6291 100644
--- a/java-bigqueryconnection/proto-google-cloud-bigqueryconnection-v1/src/main/java/com/google/cloud/bigquery/connection/v1/ConnectionName.java
+++ b/java-bigqueryconnection/proto-google-cloud-bigqueryconnection-v1/src/main/java/com/google/cloud/bigquery/connection/v1/ConnectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConnectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONNECTION =
diff --git a/java-bigqueryconnection/proto-google-cloud-bigqueryconnection-v1/src/main/java/com/google/cloud/bigquery/connection/v1/LocationName.java b/java-bigqueryconnection/proto-google-cloud-bigqueryconnection-v1/src/main/java/com/google/cloud/bigquery/connection/v1/LocationName.java
index 9385acfb7ae6..97595a1ebac5 100644
--- a/java-bigqueryconnection/proto-google-cloud-bigqueryconnection-v1/src/main/java/com/google/cloud/bigquery/connection/v1/LocationName.java
+++ b/java-bigqueryconnection/proto-google-cloud-bigqueryconnection-v1/src/main/java/com/google/cloud/bigquery/connection/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-bigqueryconnection/proto-google-cloud-bigqueryconnection-v1beta1/src/main/java/com/google/cloud/bigquery/connection/v1beta1/ConnectionName.java b/java-bigqueryconnection/proto-google-cloud-bigqueryconnection-v1beta1/src/main/java/com/google/cloud/bigquery/connection/v1beta1/ConnectionName.java
index 12905555475b..642f4484e0fa 100644
--- a/java-bigqueryconnection/proto-google-cloud-bigqueryconnection-v1beta1/src/main/java/com/google/cloud/bigquery/connection/v1beta1/ConnectionName.java
+++ b/java-bigqueryconnection/proto-google-cloud-bigqueryconnection-v1beta1/src/main/java/com/google/cloud/bigquery/connection/v1beta1/ConnectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConnectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONNECTION =
diff --git a/java-bigqueryconnection/proto-google-cloud-bigqueryconnection-v1beta1/src/main/java/com/google/cloud/bigquery/connection/v1beta1/LocationName.java b/java-bigqueryconnection/proto-google-cloud-bigqueryconnection-v1beta1/src/main/java/com/google/cloud/bigquery/connection/v1beta1/LocationName.java
index 178adcdb71c3..458d418e9742 100644
--- a/java-bigqueryconnection/proto-google-cloud-bigqueryconnection-v1beta1/src/main/java/com/google/cloud/bigquery/connection/v1beta1/LocationName.java
+++ b/java-bigqueryconnection/proto-google-cloud-bigqueryconnection-v1beta1/src/main/java/com/google/cloud/bigquery/connection/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/DataPolicyServiceClient.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/DataPolicyServiceClient.java
index cae714fc3f83..5cc8c59e37aa 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/DataPolicyServiceClient.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/DataPolicyServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -283,6 +284,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataPolicyServiceClient implements BackgroundResource {
   private final DataPolicyServiceSettings settings;
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/DataPolicyServiceSettings.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/DataPolicyServiceSettings.java
index 38bb9a92125e..309f5a55e230 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/DataPolicyServiceSettings.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/DataPolicyServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataPolicyServiceSettings extends ClientSettings<DataPolicyServiceSettings> {
 
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/DataPolicyServiceStub.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/DataPolicyServiceStub.java
index 76dcf9be6b0e..095771d51a2f 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/DataPolicyServiceStub.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/DataPolicyServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataPolicyServiceStub implements BackgroundResource {
 
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/DataPolicyServiceStubSettings.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/DataPolicyServiceStubSettings.java
index 69b3f8d057fe..c3aa23bc12a7 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/DataPolicyServiceStubSettings.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/DataPolicyServiceStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataPolicyServiceStubSettings extends StubSettings<DataPolicyServiceStubSettings> {
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/GrpcDataPolicyServiceCallableFactory.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/GrpcDataPolicyServiceCallableFactory.java
index bbe98894e047..88bc5ed9bed7 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/GrpcDataPolicyServiceCallableFactory.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/GrpcDataPolicyServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataPolicyServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/GrpcDataPolicyServiceStub.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/GrpcDataPolicyServiceStub.java
index d9abdf9b6d66..9ddf2f1f4c4e 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/GrpcDataPolicyServiceStub.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/GrpcDataPolicyServiceStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataPolicyServiceStub extends DataPolicyServiceStub {
   private static final MethodDescriptor<CreateDataPolicyRequest, DataPolicy>
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/HttpJsonDataPolicyServiceCallableFactory.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/HttpJsonDataPolicyServiceCallableFactory.java
index e1f0520a5cdf..0a858759c7ed 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/HttpJsonDataPolicyServiceCallableFactory.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/HttpJsonDataPolicyServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataPolicyServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/HttpJsonDataPolicyServiceStub.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/HttpJsonDataPolicyServiceStub.java
index 1b9b9c8d9c2d..6b6767cfdcac 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/HttpJsonDataPolicyServiceStub.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1/stub/HttpJsonDataPolicyServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataPolicyServiceStub extends DataPolicyServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/DataPolicyServiceClient.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/DataPolicyServiceClient.java
index a7a479eeb20b..d9beec4f6b56 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/DataPolicyServiceClient.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/DataPolicyServiceClient.java
@@ -39,6 +39,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -266,6 +267,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataPolicyServiceClient implements BackgroundResource {
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/DataPolicyServiceSettings.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/DataPolicyServiceSettings.java
index 38c724bca51c..2e1f76a58ecf 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/DataPolicyServiceSettings.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/DataPolicyServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataPolicyServiceSettings extends ClientSettings<DataPolicyServiceSettings> {
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/DataPolicyServiceStub.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/DataPolicyServiceStub.java
index ac6bb0361d4b..1d89fceaee96 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/DataPolicyServiceStub.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/DataPolicyServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DataPolicyServiceStub implements BackgroundResource {
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/DataPolicyServiceStubSettings.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/DataPolicyServiceStubSettings.java
index 7c0286b89ddd..55b34a4edfdc 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/DataPolicyServiceStubSettings.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/DataPolicyServiceStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/GrpcDataPolicyServiceCallableFactory.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/GrpcDataPolicyServiceCallableFactory.java
index bb2916d72b7a..13da0378ad06 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/GrpcDataPolicyServiceCallableFactory.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/GrpcDataPolicyServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataPolicyServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/GrpcDataPolicyServiceStub.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/GrpcDataPolicyServiceStub.java
index 5ff10460e557..644d796189ba 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/GrpcDataPolicyServiceStub.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/GrpcDataPolicyServiceStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataPolicyServiceStub extends DataPolicyServiceStub {
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/HttpJsonDataPolicyServiceCallableFactory.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/HttpJsonDataPolicyServiceCallableFactory.java
index d3b0386d63bc..fa5e9f2e78a1 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/HttpJsonDataPolicyServiceCallableFactory.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/HttpJsonDataPolicyServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataPolicyServiceCallableFactory
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/HttpJsonDataPolicyServiceStub.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/HttpJsonDataPolicyServiceStub.java
index d4165d1f39f3..e7ea511d49cf 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/HttpJsonDataPolicyServiceStub.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/stub/HttpJsonDataPolicyServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataPolicyServiceStub extends DataPolicyServiceStub {
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/DataPolicyServiceClient.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/DataPolicyServiceClient.java
index bd0e17523719..567b1c9de6df 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/DataPolicyServiceClient.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/DataPolicyServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -305,6 +306,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataPolicyServiceClient implements BackgroundResource {
   private final DataPolicyServiceSettings settings;
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/DataPolicyServiceSettings.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/DataPolicyServiceSettings.java
index a44d6e5642e4..90ce03540755 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/DataPolicyServiceSettings.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/DataPolicyServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataPolicyServiceSettings extends ClientSettings<DataPolicyServiceSettings> {
 
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/DataPolicyServiceStub.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/DataPolicyServiceStub.java
index 3b84b4eadf58..39fea34218a3 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/DataPolicyServiceStub.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/DataPolicyServiceStub.java
@@ -36,6 +36,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataPolicyServiceStub implements BackgroundResource {
 
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/DataPolicyServiceStubSettings.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/DataPolicyServiceStubSettings.java
index 955d7dc4b8a1..e16480ecbb17 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/DataPolicyServiceStubSettings.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/DataPolicyServiceStubSettings.java
@@ -68,6 +68,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataPolicyServiceStubSettings extends StubSettings<DataPolicyServiceStubSettings> {
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/GrpcDataPolicyServiceCallableFactory.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/GrpcDataPolicyServiceCallableFactory.java
index 6a86e5d8b74b..867042ee26cd 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/GrpcDataPolicyServiceCallableFactory.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/GrpcDataPolicyServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataPolicyServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/GrpcDataPolicyServiceStub.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/GrpcDataPolicyServiceStub.java
index 285a61da9a02..2595ad7cbea8 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/GrpcDataPolicyServiceStub.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/GrpcDataPolicyServiceStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataPolicyServiceStub extends DataPolicyServiceStub {
   private static final MethodDescriptor<CreateDataPolicyRequest, DataPolicy>
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/HttpJsonDataPolicyServiceCallableFactory.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/HttpJsonDataPolicyServiceCallableFactory.java
index 493d79dd958a..97689b354c80 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/HttpJsonDataPolicyServiceCallableFactory.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/HttpJsonDataPolicyServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataPolicyServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/HttpJsonDataPolicyServiceStub.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/HttpJsonDataPolicyServiceStub.java
index e369fbbbde18..a816dcd4e1b3 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/HttpJsonDataPolicyServiceStub.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2/stub/HttpJsonDataPolicyServiceStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataPolicyServiceStub extends DataPolicyServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/DataPolicyServiceClient.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/DataPolicyServiceClient.java
index e65ed1b0f6ba..111897201f37 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/DataPolicyServiceClient.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/DataPolicyServiceClient.java
@@ -39,6 +39,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -306,6 +307,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataPolicyServiceClient implements BackgroundResource {
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/DataPolicyServiceSettings.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/DataPolicyServiceSettings.java
index d49af12a66ba..ccb577eb2378 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/DataPolicyServiceSettings.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/DataPolicyServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataPolicyServiceSettings extends ClientSettings<DataPolicyServiceSettings> {
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/DataPolicyServiceStub.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/DataPolicyServiceStub.java
index a743b0c5c9da..092b5b30856c 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/DataPolicyServiceStub.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/DataPolicyServiceStub.java
@@ -37,6 +37,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DataPolicyServiceStub implements BackgroundResource {
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/DataPolicyServiceStubSettings.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/DataPolicyServiceStubSettings.java
index a79ee6a22bc2..93d300f3677f 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/DataPolicyServiceStubSettings.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/DataPolicyServiceStubSettings.java
@@ -68,6 +68,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/GrpcDataPolicyServiceCallableFactory.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/GrpcDataPolicyServiceCallableFactory.java
index 26ce51b34d00..fe82e0362ff9 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/GrpcDataPolicyServiceCallableFactory.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/GrpcDataPolicyServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataPolicyServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/GrpcDataPolicyServiceStub.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/GrpcDataPolicyServiceStub.java
index 5732add4bd46..686ec3a44290 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/GrpcDataPolicyServiceStub.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/GrpcDataPolicyServiceStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataPolicyServiceStub extends DataPolicyServiceStub {
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/HttpJsonDataPolicyServiceCallableFactory.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/HttpJsonDataPolicyServiceCallableFactory.java
index 6ea8c07bc018..c541fa39df6c 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/HttpJsonDataPolicyServiceCallableFactory.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/HttpJsonDataPolicyServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataPolicyServiceCallableFactory
diff --git a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/HttpJsonDataPolicyServiceStub.java b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/HttpJsonDataPolicyServiceStub.java
index a4388431a59c..2ad8de02c8b7 100644
--- a/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/HttpJsonDataPolicyServiceStub.java
+++ b/java-bigquerydatapolicy/google-cloud-bigquerydatapolicy/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/stub/HttpJsonDataPolicyServiceStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataPolicyServiceStub extends DataPolicyServiceStub {
diff --git a/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v1/src/main/java/com/google/cloud/bigquery/datapolicies/v1/DataPolicyName.java b/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v1/src/main/java/com/google/cloud/bigquery/datapolicies/v1/DataPolicyName.java
index 3bdc4a96440b..5a796ea2c186 100644
--- a/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v1/src/main/java/com/google/cloud/bigquery/datapolicies/v1/DataPolicyName.java
+++ b/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v1/src/main/java/com/google/cloud/bigquery/datapolicies/v1/DataPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_POLICY =
diff --git a/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v1/src/main/java/com/google/cloud/bigquery/datapolicies/v1/LocationName.java b/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v1/src/main/java/com/google/cloud/bigquery/datapolicies/v1/LocationName.java
index 8cf327e8ead5..1041a3ebce27 100644
--- a/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v1/src/main/java/com/google/cloud/bigquery/datapolicies/v1/LocationName.java
+++ b/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v1/src/main/java/com/google/cloud/bigquery/datapolicies/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v1beta1/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/DataPolicyName.java b/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v1beta1/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/DataPolicyName.java
index b6c8184ae7eb..bd3ccf8469fe 100644
--- a/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v1beta1/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/DataPolicyName.java
+++ b/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v1beta1/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/DataPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_POLICY =
diff --git a/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v1beta1/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/LocationName.java b/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v1beta1/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/LocationName.java
index 1f8aa586d499..f57e2dbcd157 100644
--- a/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v1beta1/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/LocationName.java
+++ b/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v1beta1/src/main/java/com/google/cloud/bigquery/datapolicies/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v2/src/main/java/com/google/cloud/bigquery/datapolicies/v2/DataPolicyName.java b/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v2/src/main/java/com/google/cloud/bigquery/datapolicies/v2/DataPolicyName.java
index ce3caf54e124..a2ae5ef7ed4a 100644
--- a/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v2/src/main/java/com/google/cloud/bigquery/datapolicies/v2/DataPolicyName.java
+++ b/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v2/src/main/java/com/google/cloud/bigquery/datapolicies/v2/DataPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_POLICY =
diff --git a/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v2/src/main/java/com/google/cloud/bigquery/datapolicies/v2/LocationName.java b/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v2/src/main/java/com/google/cloud/bigquery/datapolicies/v2/LocationName.java
index 95c46ba59d54..bf190e82dbaf 100644
--- a/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v2/src/main/java/com/google/cloud/bigquery/datapolicies/v2/LocationName.java
+++ b/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v2/src/main/java/com/google/cloud/bigquery/datapolicies/v2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v2beta1/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/DataPolicyName.java b/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v2beta1/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/DataPolicyName.java
index 844e54434dd9..bab422bb63e8 100644
--- a/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v2beta1/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/DataPolicyName.java
+++ b/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v2beta1/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/DataPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_POLICY =
diff --git a/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v2beta1/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/LocationName.java b/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v2beta1/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/LocationName.java
index 3abe96653628..e20ddb9a0f5d 100644
--- a/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v2beta1/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/LocationName.java
+++ b/java-bigquerydatapolicy/proto-google-cloud-bigquerydatapolicy-v2beta1/src/main/java/com/google/cloud/bigquery/datapolicies/v2beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataTransferServiceClient.java b/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataTransferServiceClient.java
index 083cda34ad81..f228cc7fc87a 100644
--- a/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataTransferServiceClient.java
+++ b/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataTransferServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -453,6 +454,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataTransferServiceClient implements BackgroundResource {
   private final DataTransferServiceSettings settings;
diff --git a/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataTransferServiceSettings.java b/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataTransferServiceSettings.java
index 7ed8c2be1c62..b18b0bc9719a 100644
--- a/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataTransferServiceSettings.java
+++ b/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataTransferServiceSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -96,6 +97,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataTransferServiceSettings extends ClientSettings<DataTransferServiceSettings> {
 
diff --git a/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/DataTransferServiceStub.java b/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/DataTransferServiceStub.java
index 1a81afa9b49f..311f629e86c0 100644
--- a/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/DataTransferServiceStub.java
+++ b/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/DataTransferServiceStub.java
@@ -56,6 +56,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataTransferServiceStub implements BackgroundResource {
 
diff --git a/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/DataTransferServiceStubSettings.java b/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/DataTransferServiceStubSettings.java
index 8daf76f69d6b..a43c44f206f7 100644
--- a/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/DataTransferServiceStubSettings.java
+++ b/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/DataTransferServiceStubSettings.java
@@ -89,6 +89,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -142,6 +143,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataTransferServiceStubSettings extends StubSettings<DataTransferServiceStubSettings> {
diff --git a/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/GrpcDataTransferServiceCallableFactory.java b/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/GrpcDataTransferServiceCallableFactory.java
index 7a442af4d634..4551eeb3b0e0 100644
--- a/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/GrpcDataTransferServiceCallableFactory.java
+++ b/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/GrpcDataTransferServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataTransferServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/GrpcDataTransferServiceStub.java b/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/GrpcDataTransferServiceStub.java
index fb0968fb6865..44ba36fc69a4 100644
--- a/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/GrpcDataTransferServiceStub.java
+++ b/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/GrpcDataTransferServiceStub.java
@@ -66,6 +66,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataTransferServiceStub extends DataTransferServiceStub {
   private static final MethodDescriptor<GetDataSourceRequest, DataSource>
diff --git a/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/HttpJsonDataTransferServiceCallableFactory.java b/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/HttpJsonDataTransferServiceCallableFactory.java
index cf9f00825b0c..b16dcc05b575 100644
--- a/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/HttpJsonDataTransferServiceCallableFactory.java
+++ b/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/HttpJsonDataTransferServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataTransferServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/HttpJsonDataTransferServiceStub.java b/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/HttpJsonDataTransferServiceStub.java
index 507862224e91..42708d64290b 100644
--- a/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/HttpJsonDataTransferServiceStub.java
+++ b/java-bigquerydatatransfer/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/HttpJsonDataTransferServiceStub.java
@@ -73,6 +73,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -80,6 +81,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataTransferServiceStub extends DataTransferServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataSourceName.java b/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataSourceName.java
index 909129f769ac..262447b4701a 100644
--- a/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataSourceName.java
+++ b/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataSourceName.java
@@ -24,8 +24,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataSourceName implements ResourceName {
   private static final PathTemplate PROJECT_DATA_SOURCE =
diff --git a/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/LocationName.java b/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/LocationName.java
index 99c3b560fed3..9e1a87d2c48b 100644
--- a/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/LocationName.java
+++ b/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/ProjectName.java b/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/ProjectName.java
index 7a10eee2a7b8..5f5fb60bd2a2 100644
--- a/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/ProjectName.java
+++ b/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/RunName.java b/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/RunName.java
index 1a9f450c5aeb..5746f7410743 100644
--- a/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/RunName.java
+++ b/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/RunName.java
@@ -24,8 +24,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RunName implements ResourceName {
   private static final PathTemplate PROJECT_TRANSFER_CONFIG_RUN =
diff --git a/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/TransferConfigName.java b/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/TransferConfigName.java
index 279f36690930..d2c997e3a75e 100644
--- a/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/TransferConfigName.java
+++ b/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1/src/main/java/com/google/cloud/bigquery/datatransfer/v1/TransferConfigName.java
@@ -24,8 +24,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TransferConfigName implements ResourceName {
   private static final PathTemplate PROJECT_TRANSFER_CONFIG =
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/MigrationServiceClient.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/MigrationServiceClient.java
index 5894e010abe5..489f8f91565a 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/MigrationServiceClient.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/MigrationServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -258,6 +259,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MigrationServiceClient implements BackgroundResource {
   private final MigrationServiceSettings settings;
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/MigrationServiceSettings.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/MigrationServiceSettings.java
index a08bb25e9450..d6b9fa6c805e 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/MigrationServiceSettings.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/MigrationServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MigrationServiceSettings extends ClientSettings<MigrationServiceSettings> {
 
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/GrpcMigrationServiceCallableFactory.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/GrpcMigrationServiceCallableFactory.java
index 9c66ec7d8823..782fe427a5a2 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/GrpcMigrationServiceCallableFactory.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/GrpcMigrationServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMigrationServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/GrpcMigrationServiceStub.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/GrpcMigrationServiceStub.java
index 9aa46e8ba512..ab2ec34483d3 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/GrpcMigrationServiceStub.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/GrpcMigrationServiceStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMigrationServiceStub extends MigrationServiceStub {
   private static final MethodDescriptor<CreateMigrationWorkflowRequest, MigrationWorkflow>
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/HttpJsonMigrationServiceCallableFactory.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/HttpJsonMigrationServiceCallableFactory.java
index c056911738e8..5b7a4e1ead9f 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/HttpJsonMigrationServiceCallableFactory.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/HttpJsonMigrationServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMigrationServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/HttpJsonMigrationServiceStub.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/HttpJsonMigrationServiceStub.java
index 4ec5c8bc41d1..0b987357c243 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/HttpJsonMigrationServiceStub.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/HttpJsonMigrationServiceStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMigrationServiceStub extends MigrationServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/MigrationServiceStub.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/MigrationServiceStub.java
index 3e2456438834..6ce9c150f421 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/MigrationServiceStub.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/MigrationServiceStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.bigquery.migration.v2.StartMigrationWorkflowRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MigrationServiceStub implements BackgroundResource {
 
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/MigrationServiceStubSettings.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/MigrationServiceStubSettings.java
index 789c8a8670fa..74ce202c2bed 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/MigrationServiceStubSettings.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2/stub/MigrationServiceStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MigrationServiceStubSettings extends StubSettings<MigrationServiceStubSettings> {
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/MigrationServiceClient.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/MigrationServiceClient.java
index 654ba1c1adc9..3336e464e847 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/MigrationServiceClient.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/MigrationServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -259,6 +260,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MigrationServiceClient implements BackgroundResource {
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/MigrationServiceSettings.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/MigrationServiceSettings.java
index ef0bd6e0eb6f..68f60c71a4dd 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/MigrationServiceSettings.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/MigrationServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MigrationServiceSettings extends ClientSettings<MigrationServiceSettings> {
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/SqlTranslationServiceClient.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/SqlTranslationServiceClient.java
index 89b00b2d412c..c7d9768aaa79 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/SqlTranslationServiceClient.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/SqlTranslationServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SqlTranslationServiceClient implements BackgroundResource {
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/SqlTranslationServiceSettings.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/SqlTranslationServiceSettings.java
index aa79630b6e8a..50d7c72e2f22 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/SqlTranslationServiceSettings.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/SqlTranslationServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SqlTranslationServiceSettings extends ClientSettings<SqlTranslationServiceSettings> {
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/GrpcMigrationServiceCallableFactory.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/GrpcMigrationServiceCallableFactory.java
index 97cc43838e7c..303cb5b7a105 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/GrpcMigrationServiceCallableFactory.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/GrpcMigrationServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMigrationServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/GrpcMigrationServiceStub.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/GrpcMigrationServiceStub.java
index a44206e8aa44..96eebfbc6d31 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/GrpcMigrationServiceStub.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/GrpcMigrationServiceStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMigrationServiceStub extends MigrationServiceStub {
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/GrpcSqlTranslationServiceCallableFactory.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/GrpcSqlTranslationServiceCallableFactory.java
index ab45161d6c75..9f082ea566be 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/GrpcSqlTranslationServiceCallableFactory.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/GrpcSqlTranslationServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSqlTranslationServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/GrpcSqlTranslationServiceStub.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/GrpcSqlTranslationServiceStub.java
index 771bf00428cc..e87750c8367b 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/GrpcSqlTranslationServiceStub.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/GrpcSqlTranslationServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSqlTranslationServiceStub extends SqlTranslationServiceStub {
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/HttpJsonMigrationServiceCallableFactory.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/HttpJsonMigrationServiceCallableFactory.java
index 3bb8fccc41cb..eade73ae4957 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/HttpJsonMigrationServiceCallableFactory.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/HttpJsonMigrationServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMigrationServiceCallableFactory
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/HttpJsonMigrationServiceStub.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/HttpJsonMigrationServiceStub.java
index 36c4e9a80268..f3837c874d81 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/HttpJsonMigrationServiceStub.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/HttpJsonMigrationServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMigrationServiceStub extends MigrationServiceStub {
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/HttpJsonSqlTranslationServiceCallableFactory.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/HttpJsonSqlTranslationServiceCallableFactory.java
index fd7b54c454f3..e85f750d8b74 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/HttpJsonSqlTranslationServiceCallableFactory.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/HttpJsonSqlTranslationServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSqlTranslationServiceCallableFactory
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/HttpJsonSqlTranslationServiceStub.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/HttpJsonSqlTranslationServiceStub.java
index 908efaed205e..bd7d675eb94c 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/HttpJsonSqlTranslationServiceStub.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/HttpJsonSqlTranslationServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSqlTranslationServiceStub extends SqlTranslationServiceStub {
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/MigrationServiceStub.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/MigrationServiceStub.java
index 3b8d3113720f..cac922bccb1b 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/MigrationServiceStub.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/MigrationServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.bigquery.migration.v2alpha.StartMigrationWorkflowRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class MigrationServiceStub implements BackgroundResource {
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/MigrationServiceStubSettings.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/MigrationServiceStubSettings.java
index 76eaa8181634..db131acd683c 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/MigrationServiceStubSettings.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/MigrationServiceStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/SqlTranslationServiceStub.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/SqlTranslationServiceStub.java
index fcbd46e82545..84892e068f78 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/SqlTranslationServiceStub.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/SqlTranslationServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.bigquery.migration.v2alpha.TranslateQueryRequest;
 import com.google.cloud.bigquery.migration.v2alpha.TranslateQueryResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SqlTranslationServiceStub implements BackgroundResource {
diff --git a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/SqlTranslationServiceStubSettings.java b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/SqlTranslationServiceStubSettings.java
index 49cf57ce6bf0..78f52440b8de 100644
--- a/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/SqlTranslationServiceStubSettings.java
+++ b/java-bigquerymigration/google-cloud-bigquerymigration/src/main/java/com/google/cloud/bigquery/migration/v2alpha/stub/SqlTranslationServiceStubSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2/src/main/java/com/google/cloud/bigquery/migration/v2/LocationName.java b/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2/src/main/java/com/google/cloud/bigquery/migration/v2/LocationName.java
index ea694df93a3a..709bd68e1e5c 100644
--- a/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2/src/main/java/com/google/cloud/bigquery/migration/v2/LocationName.java
+++ b/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2/src/main/java/com/google/cloud/bigquery/migration/v2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2/src/main/java/com/google/cloud/bigquery/migration/v2/MigrationSubtaskName.java b/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2/src/main/java/com/google/cloud/bigquery/migration/v2/MigrationSubtaskName.java
index 2392f489a056..e48364257632 100644
--- a/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2/src/main/java/com/google/cloud/bigquery/migration/v2/MigrationSubtaskName.java
+++ b/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2/src/main/java/com/google/cloud/bigquery/migration/v2/MigrationSubtaskName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MigrationSubtaskName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WORKFLOW_SUBTASK =
diff --git a/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2/src/main/java/com/google/cloud/bigquery/migration/v2/MigrationWorkflowName.java b/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2/src/main/java/com/google/cloud/bigquery/migration/v2/MigrationWorkflowName.java
index 567b97c12b6c..1fa66ea9240d 100644
--- a/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2/src/main/java/com/google/cloud/bigquery/migration/v2/MigrationWorkflowName.java
+++ b/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2/src/main/java/com/google/cloud/bigquery/migration/v2/MigrationWorkflowName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MigrationWorkflowName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WORKFLOW =
diff --git a/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2alpha/src/main/java/com/google/cloud/bigquery/migration/v2alpha/LocationName.java b/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2alpha/src/main/java/com/google/cloud/bigquery/migration/v2alpha/LocationName.java
index e5c9e381d3c1..bb6fb7edbae4 100644
--- a/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2alpha/src/main/java/com/google/cloud/bigquery/migration/v2alpha/LocationName.java
+++ b/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2alpha/src/main/java/com/google/cloud/bigquery/migration/v2alpha/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2alpha/src/main/java/com/google/cloud/bigquery/migration/v2alpha/MigrationSubtaskName.java b/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2alpha/src/main/java/com/google/cloud/bigquery/migration/v2alpha/MigrationSubtaskName.java
index 6451f7f66ba0..317815472138 100644
--- a/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2alpha/src/main/java/com/google/cloud/bigquery/migration/v2alpha/MigrationSubtaskName.java
+++ b/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2alpha/src/main/java/com/google/cloud/bigquery/migration/v2alpha/MigrationSubtaskName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MigrationSubtaskName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WORKFLOW_SUBTASK =
diff --git a/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2alpha/src/main/java/com/google/cloud/bigquery/migration/v2alpha/MigrationWorkflowName.java b/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2alpha/src/main/java/com/google/cloud/bigquery/migration/v2alpha/MigrationWorkflowName.java
index a7b4c851660c..a31e91883666 100644
--- a/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2alpha/src/main/java/com/google/cloud/bigquery/migration/v2alpha/MigrationWorkflowName.java
+++ b/java-bigquerymigration/proto-google-cloud-bigquerymigration-v2alpha/src/main/java/com/google/cloud/bigquery/migration/v2alpha/MigrationWorkflowName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MigrationWorkflowName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WORKFLOW =
diff --git a/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/ReservationServiceClient.java b/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/ReservationServiceClient.java
index 1a5330bb58c3..5ff03e92da45 100644
--- a/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/ReservationServiceClient.java
+++ b/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/ReservationServiceClient.java
@@ -39,6 +39,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -744,6 +745,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReservationServiceClient implements BackgroundResource {
   private final ReservationServiceSettings settings;
diff --git a/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/ReservationServiceSettings.java b/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/ReservationServiceSettings.java
index ec960e8273c6..bf8b501b7661 100644
--- a/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/ReservationServiceSettings.java
+++ b/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/ReservationServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReservationServiceSettings extends ClientSettings<ReservationServiceSettings> {
 
diff --git a/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/GrpcReservationServiceCallableFactory.java b/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/GrpcReservationServiceCallableFactory.java
index 7ed7b8e233a8..ce67d4699ec6 100644
--- a/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/GrpcReservationServiceCallableFactory.java
+++ b/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/GrpcReservationServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcReservationServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/GrpcReservationServiceStub.java b/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/GrpcReservationServiceStub.java
index 26cf305cae09..a0af7fba77a4 100644
--- a/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/GrpcReservationServiceStub.java
+++ b/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/GrpcReservationServiceStub.java
@@ -80,6 +80,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcReservationServiceStub extends ReservationServiceStub {
   private static final MethodDescriptor<CreateReservationRequest, Reservation>
diff --git a/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/HttpJsonReservationServiceCallableFactory.java b/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/HttpJsonReservationServiceCallableFactory.java
index d1a542ae1dde..7d4f076ca737 100644
--- a/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/HttpJsonReservationServiceCallableFactory.java
+++ b/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/HttpJsonReservationServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonReservationServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/HttpJsonReservationServiceStub.java b/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/HttpJsonReservationServiceStub.java
index 207e8eb98bfb..145d40b85ac1 100644
--- a/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/HttpJsonReservationServiceStub.java
+++ b/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/HttpJsonReservationServiceStub.java
@@ -87,6 +87,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -94,6 +95,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonReservationServiceStub extends ReservationServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/ReservationServiceStub.java b/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/ReservationServiceStub.java
index f973e47bdd22..01f2df92aa29 100644
--- a/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/ReservationServiceStub.java
+++ b/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/ReservationServiceStub.java
@@ -70,6 +70,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ReservationServiceStub implements BackgroundResource {
 
diff --git a/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/ReservationServiceStubSettings.java b/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/ReservationServiceStubSettings.java
index 533d6b791151..caf01042e898 100644
--- a/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/ReservationServiceStubSettings.java
+++ b/java-bigqueryreservation/google-cloud-bigqueryreservation/src/main/java/com/google/cloud/bigquery/reservation/v1/stub/ReservationServiceStubSettings.java
@@ -102,6 +102,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ReservationServiceStubSettings extends StubSettings<ReservationServiceStubSettings> {
diff --git a/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/AssignmentName.java b/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/AssignmentName.java
index b2f0e4ce6e44..2ac9071b9fe7 100644
--- a/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/AssignmentName.java
+++ b/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/AssignmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AssignmentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RESERVATION_ASSIGNMENT =
diff --git a/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/BiReservationName.java b/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/BiReservationName.java
index a2254176a7d6..09ff760aab6d 100644
--- a/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/BiReservationName.java
+++ b/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/BiReservationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BiReservationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/CapacityCommitmentName.java b/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/CapacityCommitmentName.java
index a93fd1249fc5..63b4190c2f54 100644
--- a/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/CapacityCommitmentName.java
+++ b/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/CapacityCommitmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CapacityCommitmentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CAPACITY_COMMITMENT =
diff --git a/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/LocationName.java b/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/LocationName.java
index a6c2555293f2..c6c80d02c9d1 100644
--- a/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/LocationName.java
+++ b/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/ReservationGroupName.java b/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/ReservationGroupName.java
index 083e7d89dc09..764b3c040eca 100644
--- a/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/ReservationGroupName.java
+++ b/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/ReservationGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReservationGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RESERVATION_GROUP =
diff --git a/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/ReservationName.java b/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/ReservationName.java
index d060c1e829ed..a34d13565091 100644
--- a/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/ReservationName.java
+++ b/java-bigqueryreservation/proto-google-cloud-bigqueryreservation-v1/src/main/java/com/google/cloud/bigquery/reservation/v1/ReservationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReservationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RESERVATION =
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/BaseBigQueryReadClient.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/BaseBigQueryReadClient.java
index 05f482e8bb48..3dc10c6ef0c9 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/BaseBigQueryReadClient.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/BaseBigQueryReadClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BaseBigQueryReadClient implements BackgroundResource {
   private final BaseBigQueryReadSettings settings;
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/BaseBigQueryReadSettings.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/BaseBigQueryReadSettings.java
index a2241743131c..2b61187183ac 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/BaseBigQueryReadSettings.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/BaseBigQueryReadSettings.java
@@ -30,6 +30,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BaseBigQueryReadSettings extends ClientSettings<BaseBigQueryReadSettings> {
 
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/BigQueryWriteClient.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/BigQueryWriteClient.java
index 916f7ef30c05..9f5e0c1a49e0 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/BigQueryWriteClient.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/BigQueryWriteClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -222,6 +223,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BigQueryWriteClient implements BackgroundResource {
   private final BigQueryWriteSettings settings;
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/BigQueryWriteSettings.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/BigQueryWriteSettings.java
index 2f7b439c1a73..e0c5f14b7ec2 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/BigQueryWriteSettings.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/BigQueryWriteSettings.java
@@ -30,6 +30,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BigQueryWriteSettings extends ClientSettings<BigQueryWriteSettings> {
 
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/BigQueryReadStub.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/BigQueryReadStub.java
index 4b5f2d7161bd..66d7994cf047 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/BigQueryReadStub.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/BigQueryReadStub.java
@@ -26,6 +26,7 @@
 import com.google.cloud.bigquery.storage.v1.SplitReadStreamRequest;
 import com.google.cloud.bigquery.storage.v1.SplitReadStreamResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BigQueryReadStub implements BackgroundResource {
 
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/BigQueryWriteStub.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/BigQueryWriteStub.java
index b962c2afb09e..2396fbc7c49a 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/BigQueryWriteStub.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/BigQueryWriteStub.java
@@ -31,6 +31,7 @@
 import com.google.cloud.bigquery.storage.v1.GetWriteStreamRequest;
 import com.google.cloud.bigquery.storage.v1.WriteStream;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BigQueryWriteStub implements BackgroundResource {
 
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/BigQueryWriteStubSettings.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/BigQueryWriteStubSettings.java
index 267df54738e5..b85cef7d5094 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/BigQueryWriteStubSettings.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/BigQueryWriteStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BigQueryWriteStubSettings extends StubSettings<BigQueryWriteStubSettings> {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/GrpcBigQueryReadCallableFactory.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/GrpcBigQueryReadCallableFactory.java
index 3127fbea870a..ec5bd1bc3be7 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/GrpcBigQueryReadCallableFactory.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/GrpcBigQueryReadCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBigQueryReadCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/GrpcBigQueryReadStub.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/GrpcBigQueryReadStub.java
index 174fcc136ab1..5ec2411f8b1b 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/GrpcBigQueryReadStub.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/GrpcBigQueryReadStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBigQueryReadStub extends BigQueryReadStub {
   private static final MethodDescriptor<CreateReadSessionRequest, ReadSession>
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/GrpcBigQueryWriteCallableFactory.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/GrpcBigQueryWriteCallableFactory.java
index 929eb01577cd..e31b04872941 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/GrpcBigQueryWriteCallableFactory.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/GrpcBigQueryWriteCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBigQueryWriteCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/GrpcBigQueryWriteStub.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/GrpcBigQueryWriteStub.java
index 0a85c7e8ab92..e14f1e33fb2b 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/GrpcBigQueryWriteStub.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/stub/GrpcBigQueryWriteStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBigQueryWriteStub extends BigQueryWriteStub {
   private static final MethodDescriptor<CreateWriteStreamRequest, WriteStream>
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/MetastorePartitionServiceClient.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/MetastorePartitionServiceClient.java
index b543150c4389..b8ed54dc50ad 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/MetastorePartitionServiceClient.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/MetastorePartitionServiceClient.java
@@ -26,6 +26,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -180,6 +181,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MetastorePartitionServiceClient implements BackgroundResource {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/MetastorePartitionServiceSettings.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/MetastorePartitionServiceSettings.java
index 401b2242b8f6..d6780bd095d8 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/MetastorePartitionServiceSettings.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/MetastorePartitionServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MetastorePartitionServiceSettings
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/stub/GrpcMetastorePartitionServiceCallableFactory.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/stub/GrpcMetastorePartitionServiceCallableFactory.java
index b0a49fde5332..a5e3013a404b 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/stub/GrpcMetastorePartitionServiceCallableFactory.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/stub/GrpcMetastorePartitionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMetastorePartitionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/stub/GrpcMetastorePartitionServiceStub.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/stub/GrpcMetastorePartitionServiceStub.java
index 2c5658aef344..4f2290bb67e4 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/stub/GrpcMetastorePartitionServiceStub.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/stub/GrpcMetastorePartitionServiceStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMetastorePartitionServiceStub extends MetastorePartitionServiceStub {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/stub/MetastorePartitionServiceStub.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/stub/MetastorePartitionServiceStub.java
index 74cb15242bba..968cee30822a 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/stub/MetastorePartitionServiceStub.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/stub/MetastorePartitionServiceStub.java
@@ -31,6 +31,7 @@
 import com.google.cloud.bigquery.storage.v1alpha.StreamMetastorePartitionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class MetastorePartitionServiceStub implements BackgroundResource {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/stub/MetastorePartitionServiceStubSettings.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/stub/MetastorePartitionServiceStubSettings.java
index 534da2afd74d..f6dd02cbc872 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/stub/MetastorePartitionServiceStubSettings.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha/stub/MetastorePartitionServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -105,6 +106,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/MetastorePartitionServiceClient.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/MetastorePartitionServiceClient.java
index 773e361c95d7..cbf3e9995a06 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/MetastorePartitionServiceClient.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/MetastorePartitionServiceClient.java
@@ -26,6 +26,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -180,6 +181,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MetastorePartitionServiceClient implements BackgroundResource {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/MetastorePartitionServiceSettings.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/MetastorePartitionServiceSettings.java
index dba660ff05f2..f40ebc7304a9 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/MetastorePartitionServiceSettings.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/MetastorePartitionServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MetastorePartitionServiceSettings
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/stub/GrpcMetastorePartitionServiceCallableFactory.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/stub/GrpcMetastorePartitionServiceCallableFactory.java
index e23f847dd55d..aa52af1a77a5 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/stub/GrpcMetastorePartitionServiceCallableFactory.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/stub/GrpcMetastorePartitionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMetastorePartitionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/stub/GrpcMetastorePartitionServiceStub.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/stub/GrpcMetastorePartitionServiceStub.java
index 6dfa14ee596e..2050e05d5ccc 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/stub/GrpcMetastorePartitionServiceStub.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/stub/GrpcMetastorePartitionServiceStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMetastorePartitionServiceStub extends MetastorePartitionServiceStub {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/stub/MetastorePartitionServiceStub.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/stub/MetastorePartitionServiceStub.java
index db9a876a64ee..67727e1a0969 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/stub/MetastorePartitionServiceStub.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/stub/MetastorePartitionServiceStub.java
@@ -31,6 +31,7 @@
 import com.google.cloud.bigquery.storage.v1beta.StreamMetastorePartitionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class MetastorePartitionServiceStub implements BackgroundResource {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/stub/MetastorePartitionServiceStubSettings.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/stub/MetastorePartitionServiceStubSettings.java
index 5d684977fdb8..c3023cb3a55b 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/stub/MetastorePartitionServiceStubSettings.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta/stub/MetastorePartitionServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -105,6 +106,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/BaseBigQueryStorageClient.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/BaseBigQueryStorageClient.java
index 70b26e22755a..a5ddef0b6782 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/BaseBigQueryStorageClient.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/BaseBigQueryStorageClient.java
@@ -26,6 +26,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -194,6 +195,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class BaseBigQueryStorageClient implements BackgroundResource {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/BaseBigQueryStorageSettings.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/BaseBigQueryStorageSettings.java
index 495c661835f0..43c6593a7899 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/BaseBigQueryStorageSettings.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/BaseBigQueryStorageSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class BaseBigQueryStorageSettings extends ClientSettings<BaseBigQueryStorageSettings> {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/stub/BigQueryStorageStub.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/stub/BigQueryStorageStub.java
index 175c5be35205..7b819803fd82 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/stub/BigQueryStorageStub.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/stub/BigQueryStorageStub.java
@@ -23,6 +23,7 @@
 import com.google.cloud.bigquery.storage.v1beta1.Storage;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class BigQueryStorageStub implements BackgroundResource {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/stub/BigQueryStorageStubSettings.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/stub/BigQueryStorageStubSettings.java
index eeddf75c9bae..01196d5a636b 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/stub/BigQueryStorageStubSettings.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/stub/BigQueryStorageStubSettings.java
@@ -44,6 +44,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/stub/GrpcBigQueryStorageCallableFactory.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/stub/GrpcBigQueryStorageCallableFactory.java
index c993ba046ec7..8c164897e973 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/stub/GrpcBigQueryStorageCallableFactory.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/stub/GrpcBigQueryStorageCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcBigQueryStorageCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/stub/GrpcBigQueryStorageStub.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/stub/GrpcBigQueryStorageStub.java
index e63c3073be55..38a0282bfb8a 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/stub/GrpcBigQueryStorageStub.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta1/stub/GrpcBigQueryStorageStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcBigQueryStorageStub extends BigQueryStorageStub {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BaseBigQueryReadClient.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BaseBigQueryReadClient.java
index 5f7328eeac2b..e389e97ae3c7 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BaseBigQueryReadClient.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BaseBigQueryReadClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class BaseBigQueryReadClient implements BackgroundResource {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BaseBigQueryReadSettings.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BaseBigQueryReadSettings.java
index 63dadc9d0a73..125a3fc97f77 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BaseBigQueryReadSettings.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BaseBigQueryReadSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class BaseBigQueryReadSettings extends ClientSettings<BaseBigQueryReadSettings> {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BigQueryWriteClient.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BigQueryWriteClient.java
index d9937cfb43f8..b5d1649dabbd 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BigQueryWriteClient.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BigQueryWriteClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -212,6 +213,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @BetaApi
 @Deprecated
 @Generated("by gapic-generator-java")
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BigQueryWriteSettings.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BigQueryWriteSettings.java
index f26b59ffd7b1..cba80f833ba5 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BigQueryWriteSettings.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BigQueryWriteSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @BetaApi
 @Deprecated
 @Generated("by gapic-generator-java")
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/BigQueryReadStub.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/BigQueryReadStub.java
index bed68ab12ee5..bc388fb7f2b4 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/BigQueryReadStub.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/BigQueryReadStub.java
@@ -27,6 +27,7 @@
 import com.google.cloud.bigquery.storage.v1beta2.SplitReadStreamRequest;
 import com.google.cloud.bigquery.storage.v1beta2.SplitReadStreamResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class BigQueryReadStub implements BackgroundResource {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/BigQueryWriteStub.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/BigQueryWriteStub.java
index 39618310785f..6ac1cb408211 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/BigQueryWriteStub.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/BigQueryWriteStub.java
@@ -32,6 +32,7 @@
 import com.google.cloud.bigquery.storage.v1beta2.GetWriteStreamRequest;
 import com.google.cloud.bigquery.storage.v1beta2.WriteStream;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @BetaApi
 @Deprecated
 @Generated("by gapic-generator-java")
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/BigQueryWriteStubSettings.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/BigQueryWriteStubSettings.java
index dcd970356144..65996fc9200d 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/BigQueryWriteStubSettings.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/BigQueryWriteStubSettings.java
@@ -53,6 +53,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @BetaApi
 @Deprecated
 @Generated("by gapic-generator-java")
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/GrpcBigQueryReadCallableFactory.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/GrpcBigQueryReadCallableFactory.java
index ac801d74c455..93312c5d5e30 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/GrpcBigQueryReadCallableFactory.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/GrpcBigQueryReadCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcBigQueryReadCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/GrpcBigQueryReadStub.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/GrpcBigQueryReadStub.java
index 82a7e5232d92..95d1dc843af6 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/GrpcBigQueryReadStub.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/GrpcBigQueryReadStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcBigQueryReadStub extends BigQueryReadStub {
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/GrpcBigQueryWriteCallableFactory.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/GrpcBigQueryWriteCallableFactory.java
index 1d219f871cc9..639d429bcf18 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/GrpcBigQueryWriteCallableFactory.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/GrpcBigQueryWriteCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @BetaApi
 @Deprecated
 @Generated("by gapic-generator-java")
diff --git a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/GrpcBigQueryWriteStub.java b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/GrpcBigQueryWriteStub.java
index 52a8804a0042..0563eb06fd3e 100644
--- a/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/GrpcBigQueryWriteStub.java
+++ b/java-bigquerystorage/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/GrpcBigQueryWriteStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @BetaApi
 @Deprecated
 @Generated("by gapic-generator-java")
diff --git a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1/src/main/java/com/google/cloud/bigquery/storage/v1/ProjectName.java b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1/src/main/java/com/google/cloud/bigquery/storage/v1/ProjectName.java
index e8e97004fed9..df776b7cb872 100644
--- a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1/src/main/java/com/google/cloud/bigquery/storage/v1/ProjectName.java
+++ b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1/src/main/java/com/google/cloud/bigquery/storage/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1/src/main/java/com/google/cloud/bigquery/storage/v1/ReadStreamName.java b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1/src/main/java/com/google/cloud/bigquery/storage/v1/ReadStreamName.java
index d35aab6c7fde..c6726450f82e 100644
--- a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1/src/main/java/com/google/cloud/bigquery/storage/v1/ReadStreamName.java
+++ b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1/src/main/java/com/google/cloud/bigquery/storage/v1/ReadStreamName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReadStreamName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SESSION_STREAM =
diff --git a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1/src/main/java/com/google/cloud/bigquery/storage/v1/TableName.java b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1/src/main/java/com/google/cloud/bigquery/storage/v1/TableName.java
index 31408f73bb06..4cc3a4fff4e3 100644
--- a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1/src/main/java/com/google/cloud/bigquery/storage/v1/TableName.java
+++ b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1/src/main/java/com/google/cloud/bigquery/storage/v1/TableName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TableName implements ResourceName {
   private static final PathTemplate PROJECT_DATASET_TABLE =
diff --git a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1/src/main/java/com/google/cloud/bigquery/storage/v1/WriteStreamName.java b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1/src/main/java/com/google/cloud/bigquery/storage/v1/WriteStreamName.java
index 38c642a06484..7dcc3577024f 100644
--- a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1/src/main/java/com/google/cloud/bigquery/storage/v1/WriteStreamName.java
+++ b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1/src/main/java/com/google/cloud/bigquery/storage/v1/WriteStreamName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WriteStreamName implements ResourceName {
   private static final PathTemplate PROJECT_DATASET_TABLE_STREAM =
diff --git a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1alpha/src/main/java/com/google/cloud/bigquery/storage/v1alpha/TableName.java b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1alpha/src/main/java/com/google/cloud/bigquery/storage/v1alpha/TableName.java
index ac01f24a66a4..deec78e3b5b3 100644
--- a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1alpha/src/main/java/com/google/cloud/bigquery/storage/v1alpha/TableName.java
+++ b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1alpha/src/main/java/com/google/cloud/bigquery/storage/v1alpha/TableName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TableName implements ResourceName {
   private static final PathTemplate PROJECT_DATASET_TABLE =
diff --git a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta/src/main/java/com/google/cloud/bigquery/storage/v1beta/TableName.java b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta/src/main/java/com/google/cloud/bigquery/storage/v1beta/TableName.java
index 2af3750208e6..24946b38a459 100644
--- a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta/src/main/java/com/google/cloud/bigquery/storage/v1beta/TableName.java
+++ b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta/src/main/java/com/google/cloud/bigquery/storage/v1beta/TableName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TableName implements ResourceName {
   private static final PathTemplate PROJECT_DATASET_TABLE =
diff --git a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta1/src/main/java/com/google/cloud/bigquery/storage/v1beta1/ProjectName.java b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta1/src/main/java/com/google/cloud/bigquery/storage/v1beta1/ProjectName.java
index 0d6ace761289..5fa5ce28a903 100644
--- a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta1/src/main/java/com/google/cloud/bigquery/storage/v1beta1/ProjectName.java
+++ b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta1/src/main/java/com/google/cloud/bigquery/storage/v1beta1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/ProjectName.java b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/ProjectName.java
index a3e66be4b27d..bfd5bacd3759 100644
--- a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/ProjectName.java
+++ b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/ReadStreamName.java b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/ReadStreamName.java
index 32e330887b97..18171c2ae996 100644
--- a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/ReadStreamName.java
+++ b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/ReadStreamName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReadStreamName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SESSION_STREAM =
diff --git a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/TableName.java b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/TableName.java
index 84c1c7f92e33..4f931921c4fd 100644
--- a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/TableName.java
+++ b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/TableName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TableName implements ResourceName {
   private static final PathTemplate PROJECT_DATASET_TABLE =
diff --git a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/WriteStreamName.java b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/WriteStreamName.java
index 3cce937c8a6d..fefb0214615c 100644
--- a/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/WriteStreamName.java
+++ b/java-bigquerystorage/proto-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/WriteStreamName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WriteStreamName implements ResourceName {
   private static final PathTemplate PROJECT_DATASET_TABLE_STREAM =
diff --git a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BaseBigtableInstanceAdminClient.java b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BaseBigtableInstanceAdminClient.java
index af1a9b3206cb..982b7c285747 100644
--- a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BaseBigtableInstanceAdminClient.java
+++ b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BaseBigtableInstanceAdminClient.java
@@ -98,6 +98,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -770,6 +771,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BaseBigtableInstanceAdminClient implements BackgroundResource {
   private final BaseBigtableInstanceAdminSettings settings;
diff --git a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BaseBigtableInstanceAdminSettings.java b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BaseBigtableInstanceAdminSettings.java
index 87fa4df55f89..4a0ab29af8ce 100644
--- a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BaseBigtableInstanceAdminSettings.java
+++ b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BaseBigtableInstanceAdminSettings.java
@@ -90,6 +90,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -168,6 +169,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BaseBigtableInstanceAdminSettings
     extends ClientSettings<BaseBigtableInstanceAdminSettings> {
diff --git a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BaseBigtableTableAdminClient.java b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BaseBigtableTableAdminClient.java
index 4952ee4c15e3..f906c3b66921 100644
--- a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BaseBigtableTableAdminClient.java
+++ b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BaseBigtableTableAdminClient.java
@@ -106,6 +106,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -863,6 +864,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BaseBigtableTableAdminClient implements BackgroundResource {
   private final BaseBigtableTableAdminSettings settings;
diff --git a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BaseBigtableTableAdminSettings.java b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BaseBigtableTableAdminSettings.java
index 19cc61a49011..6dd4a01a10e3 100644
--- a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BaseBigtableTableAdminSettings.java
+++ b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BaseBigtableTableAdminSettings.java
@@ -99,6 +99,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -177,6 +178,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BaseBigtableTableAdminSettings extends ClientSettings<BaseBigtableTableAdminSettings> {
 
diff --git a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/BigtableInstanceAdminStub.java b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/BigtableInstanceAdminStub.java
index 73db53f15e72..177d7c3927c6 100644
--- a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/BigtableInstanceAdminStub.java
+++ b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/BigtableInstanceAdminStub.java
@@ -80,6 +80,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BigtableInstanceAdminStub implements BackgroundResource {
 
diff --git a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/BigtableInstanceAdminStubSettings.java b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/BigtableInstanceAdminStubSettings.java
index e7b94144c24e..5541fd843fdf 100644
--- a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/BigtableInstanceAdminStubSettings.java
+++ b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/BigtableInstanceAdminStubSettings.java
@@ -111,6 +111,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -189,6 +190,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BigtableInstanceAdminStubSettings
diff --git a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/BigtableTableAdminStub.java b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/BigtableTableAdminStub.java
index db34b67438e5..954d870951d4 100644
--- a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/BigtableTableAdminStub.java
+++ b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/BigtableTableAdminStub.java
@@ -89,6 +89,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -96,6 +97,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BigtableTableAdminStub implements BackgroundResource {
 
diff --git a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/BigtableTableAdminStubSettings.java b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/BigtableTableAdminStubSettings.java
index 15eafd4a65d9..7c3ae9071ac5 100644
--- a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/BigtableTableAdminStubSettings.java
+++ b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/BigtableTableAdminStubSettings.java
@@ -119,6 +119,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -197,6 +198,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BigtableTableAdminStubSettings extends StubSettings<BigtableTableAdminStubSettings> {
diff --git a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/GrpcBigtableInstanceAdminCallableFactory.java b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/GrpcBigtableInstanceAdminCallableFactory.java
index c3df94408692..940ef7c151da 100644
--- a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/GrpcBigtableInstanceAdminCallableFactory.java
+++ b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/GrpcBigtableInstanceAdminCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBigtableInstanceAdminCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/GrpcBigtableInstanceAdminStub.java b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/GrpcBigtableInstanceAdminStub.java
index 110b421d9523..21646e93ef48 100644
--- a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/GrpcBigtableInstanceAdminStub.java
+++ b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/GrpcBigtableInstanceAdminStub.java
@@ -89,6 +89,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -96,6 +97,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBigtableInstanceAdminStub extends BigtableInstanceAdminStub {
   private static final MethodDescriptor<CreateInstanceRequest, Operation>
diff --git a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/GrpcBigtableTableAdminCallableFactory.java b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/GrpcBigtableTableAdminCallableFactory.java
index 9826dedb73c5..7dd3d4565803 100644
--- a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/GrpcBigtableTableAdminCallableFactory.java
+++ b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/GrpcBigtableTableAdminCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBigtableTableAdminCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/GrpcBigtableTableAdminStub.java b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/GrpcBigtableTableAdminStub.java
index 8b1bc3991096..c24926ea4c36 100644
--- a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/GrpcBigtableTableAdminStub.java
+++ b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/GrpcBigtableTableAdminStub.java
@@ -98,6 +98,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -105,6 +106,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBigtableTableAdminStub extends BigtableTableAdminStub {
   private static final MethodDescriptor<CreateTableRequest, Table> createTableMethodDescriptor =
diff --git a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/AppProfileName.java b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/AppProfileName.java
index 4bf12b0cc86d..94eab5320cd2 100644
--- a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/AppProfileName.java
+++ b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/AppProfileName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppProfileName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_APP_PROFILE =
diff --git a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/AuthorizedViewName.java b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/AuthorizedViewName.java
index 47c2d1a75b49..ae2e74bde87c 100644
--- a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/AuthorizedViewName.java
+++ b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/AuthorizedViewName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AuthorizedViewName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_TABLE_AUTHORIZED_VIEW =
diff --git a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/BackupName.java b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/BackupName.java
index 9899f0aad2de..4f7b1fe9ea59 100644
--- a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/BackupName.java
+++ b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/BackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_CLUSTER_BACKUP =
diff --git a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/ClusterName.java b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/ClusterName.java
index 52f98c06f406..9c0617dc1752 100644
--- a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/ClusterName.java
+++ b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/ClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClusterName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_CLUSTER =
diff --git a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/InstanceName.java b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/InstanceName.java
index 88cf05a3ed35..7a27ac0ccf4e 100644
--- a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/InstanceName.java
+++ b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE =
diff --git a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/LocationName.java b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/LocationName.java
index cb19f479462e..4bc823b3eccd 100644
--- a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/LocationName.java
+++ b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/LogicalViewName.java b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/LogicalViewName.java
index 6f77ebe81576..128445a69f82 100644
--- a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/LogicalViewName.java
+++ b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/LogicalViewName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LogicalViewName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_LOGICAL_VIEW =
diff --git a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/MaterializedViewName.java b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/MaterializedViewName.java
index 1cc350e40abf..3640271ef978 100644
--- a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/MaterializedViewName.java
+++ b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/MaterializedViewName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MaterializedViewName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_MATERIALIZED_VIEW =
diff --git a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/ProjectName.java b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/ProjectName.java
index b90dd1f26a92..bf50a0845183 100644
--- a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/ProjectName.java
+++ b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/SchemaBundleName.java b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/SchemaBundleName.java
index 01ffe0e433be..f1b1ee0eec55 100644
--- a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/SchemaBundleName.java
+++ b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/SchemaBundleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SchemaBundleName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_TABLE_SCHEMA_BUNDLE =
diff --git a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/SnapshotName.java b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/SnapshotName.java
index 9e0af534fefb..50d6872fe7f9 100644
--- a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/SnapshotName.java
+++ b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/SnapshotName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SnapshotName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_CLUSTER_SNAPSHOT =
diff --git a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/TableName.java b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/TableName.java
index 84b258e78d87..0e75b41d9694 100644
--- a/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/TableName.java
+++ b/java-bigtable/proto-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/TableName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TableName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_TABLE =
diff --git a/java-bigtable/proto-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/AuthorizedViewName.java b/java-bigtable/proto-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/AuthorizedViewName.java
index 99ece5465fdd..58a368ef8734 100644
--- a/java-bigtable/proto-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/AuthorizedViewName.java
+++ b/java-bigtable/proto-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/AuthorizedViewName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AuthorizedViewName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_TABLE_AUTHORIZED_VIEW =
diff --git a/java-bigtable/proto-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/InstanceName.java b/java-bigtable/proto-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/InstanceName.java
index d36d4f04c14a..6e36641b3114 100644
--- a/java-bigtable/proto-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/InstanceName.java
+++ b/java-bigtable/proto-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE =
diff --git a/java-bigtable/proto-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/MaterializedViewName.java b/java-bigtable/proto-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/MaterializedViewName.java
index a1e665074ada..512f881a69b4 100644
--- a/java-bigtable/proto-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/MaterializedViewName.java
+++ b/java-bigtable/proto-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/MaterializedViewName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MaterializedViewName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_MATERIALIZED_VIEW =
diff --git a/java-bigtable/proto-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/TableName.java b/java-bigtable/proto-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/TableName.java
index b616cb8488fc..200ca73023f9 100644
--- a/java-bigtable/proto-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/TableName.java
+++ b/java-bigtable/proto-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/TableName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TableName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_TABLE =
diff --git a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudBillingClient.java b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudBillingClient.java
index 065becd16308..c19d2d5db57e 100644
--- a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudBillingClient.java
+++ b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudBillingClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -336,6 +337,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudBillingClient implements BackgroundResource {
   private final CloudBillingSettings settings;
diff --git a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudBillingSettings.java b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudBillingSettings.java
index 7c51acca67eb..e1af2e882d1e 100644
--- a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudBillingSettings.java
+++ b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudBillingSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudBillingSettings extends ClientSettings<CloudBillingSettings> {
 
diff --git a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudCatalogClient.java b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudCatalogClient.java
index 2909dd96c513..db1ffdc83bdc 100644
--- a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudCatalogClient.java
+++ b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudCatalogClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudCatalogClient implements BackgroundResource {
   private final CloudCatalogSettings settings;
diff --git a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudCatalogSettings.java b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudCatalogSettings.java
index 253fb9e81812..021efb0e4c96 100644
--- a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudCatalogSettings.java
+++ b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudCatalogSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudCatalogSettings extends ClientSettings<CloudCatalogSettings> {
 
diff --git a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/CloudBillingStub.java b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/CloudBillingStub.java
index cc3cabb8b19d..a92b8f78e990 100644
--- a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/CloudBillingStub.java
+++ b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/CloudBillingStub.java
@@ -39,6 +39,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CloudBillingStub implements BackgroundResource {
 
diff --git a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/CloudBillingStubSettings.java b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/CloudBillingStubSettings.java
index b8e8ba639db9..9880ba37ee71 100644
--- a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/CloudBillingStubSettings.java
+++ b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/CloudBillingStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CloudBillingStubSettings extends StubSettings<CloudBillingStubSettings> {
diff --git a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/CloudCatalogStub.java b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/CloudCatalogStub.java
index bf7ebb06bcbe..f7059ae341d5 100644
--- a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/CloudCatalogStub.java
+++ b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/CloudCatalogStub.java
@@ -26,6 +26,7 @@
 import com.google.cloud.billing.v1.ListSkusRequest;
 import com.google.cloud.billing.v1.ListSkusResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CloudCatalogStub implements BackgroundResource {
 
diff --git a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/CloudCatalogStubSettings.java b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/CloudCatalogStubSettings.java
index bee3fae7e997..77867517b41e 100644
--- a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/CloudCatalogStubSettings.java
+++ b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/CloudCatalogStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CloudCatalogStubSettings extends StubSettings<CloudCatalogStubSettings> {
diff --git a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/GrpcCloudBillingCallableFactory.java b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/GrpcCloudBillingCallableFactory.java
index ec4906d25ffb..091dd8c94f4e 100644
--- a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/GrpcCloudBillingCallableFactory.java
+++ b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/GrpcCloudBillingCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudBillingCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/GrpcCloudBillingStub.java b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/GrpcCloudBillingStub.java
index f67c0da95881..47ce1d431b5d 100644
--- a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/GrpcCloudBillingStub.java
+++ b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/GrpcCloudBillingStub.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudBillingStub extends CloudBillingStub {
   private static final MethodDescriptor<GetBillingAccountRequest, BillingAccount>
diff --git a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/GrpcCloudCatalogCallableFactory.java b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/GrpcCloudCatalogCallableFactory.java
index c1d7bddb9269..d8d29dce231c 100644
--- a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/GrpcCloudCatalogCallableFactory.java
+++ b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/GrpcCloudCatalogCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudCatalogCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/GrpcCloudCatalogStub.java b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/GrpcCloudCatalogStub.java
index 22122a954719..c1ebc60f7a21 100644
--- a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/GrpcCloudCatalogStub.java
+++ b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/GrpcCloudCatalogStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudCatalogStub extends CloudCatalogStub {
   private static final MethodDescriptor<ListServicesRequest, ListServicesResponse>
diff --git a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/HttpJsonCloudBillingCallableFactory.java b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/HttpJsonCloudBillingCallableFactory.java
index 1658950a3d6e..50b42a521648 100644
--- a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/HttpJsonCloudBillingCallableFactory.java
+++ b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/HttpJsonCloudBillingCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudBillingCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/HttpJsonCloudBillingStub.java b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/HttpJsonCloudBillingStub.java
index fea175f7ceb6..f24d8ac19228 100644
--- a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/HttpJsonCloudBillingStub.java
+++ b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/HttpJsonCloudBillingStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudBillingStub extends CloudBillingStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/HttpJsonCloudCatalogCallableFactory.java b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/HttpJsonCloudCatalogCallableFactory.java
index b858ab4ffebd..920ad3995583 100644
--- a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/HttpJsonCloudCatalogCallableFactory.java
+++ b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/HttpJsonCloudCatalogCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudCatalogCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/HttpJsonCloudCatalogStub.java b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/HttpJsonCloudCatalogStub.java
index f7689aa98c94..60348814edb6 100644
--- a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/HttpJsonCloudCatalogStub.java
+++ b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/stub/HttpJsonCloudCatalogStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudCatalogStub extends CloudCatalogStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/BillingAccountName.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/BillingAccountName.java
index c655ef85945f..0ef312228b37 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/BillingAccountName.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/BillingAccountName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BillingAccountName implements ResourceName {
   private static final PathTemplate BILLING_ACCOUNT =
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/OrganizationName.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/OrganizationName.java
index 7350c1935702..7ac34dba8512 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/OrganizationName.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ProjectName.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ProjectName.java
index 1b30f7fdd2d0..242fbee9526b 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ProjectName.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ServiceName.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ServiceName.java
index d77a82639ee7..fdcc19e10de0 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ServiceName.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ServiceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceName implements ResourceName {
   private static final PathTemplate SERVICE =
diff --git a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/BudgetServiceClient.java b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/BudgetServiceClient.java
index 4b13d02fafea..46902a25fe72 100644
--- a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/BudgetServiceClient.java
+++ b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/BudgetServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -218,6 +219,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BudgetServiceClient implements BackgroundResource {
   private final BudgetServiceSettings settings;
diff --git a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/BudgetServiceSettings.java b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/BudgetServiceSettings.java
index a9684bd17500..a71f2d934978 100644
--- a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/BudgetServiceSettings.java
+++ b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/BudgetServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BudgetServiceSettings extends ClientSettings<BudgetServiceSettings> {
 
diff --git a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/BudgetServiceStub.java b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/BudgetServiceStub.java
index d425833043a6..fea6a85dd965 100644
--- a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/BudgetServiceStub.java
+++ b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/BudgetServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.billing.budgets.v1.UpdateBudgetRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BudgetServiceStub implements BackgroundResource {
 
diff --git a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/BudgetServiceStubSettings.java b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/BudgetServiceStubSettings.java
index 0996b35e0da1..fa043b29960a 100644
--- a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/BudgetServiceStubSettings.java
+++ b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/BudgetServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BudgetServiceStubSettings extends StubSettings<BudgetServiceStubSettings> {
diff --git a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/GrpcBudgetServiceCallableFactory.java b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/GrpcBudgetServiceCallableFactory.java
index 0098433abed5..94ec153961c6 100644
--- a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/GrpcBudgetServiceCallableFactory.java
+++ b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/GrpcBudgetServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBudgetServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/GrpcBudgetServiceStub.java b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/GrpcBudgetServiceStub.java
index 6ee420308766..e3290ea1c642 100644
--- a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/GrpcBudgetServiceStub.java
+++ b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/GrpcBudgetServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBudgetServiceStub extends BudgetServiceStub {
   private static final MethodDescriptor<CreateBudgetRequest, Budget> createBudgetMethodDescriptor =
diff --git a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/HttpJsonBudgetServiceCallableFactory.java b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/HttpJsonBudgetServiceCallableFactory.java
index 309c8d4a16a7..771592d37fce 100644
--- a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/HttpJsonBudgetServiceCallableFactory.java
+++ b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/HttpJsonBudgetServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBudgetServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/HttpJsonBudgetServiceStub.java b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/HttpJsonBudgetServiceStub.java
index 271d888be053..f4e58967a90c 100644
--- a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/HttpJsonBudgetServiceStub.java
+++ b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1/stub/HttpJsonBudgetServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBudgetServiceStub extends BudgetServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/BudgetServiceClient.java b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/BudgetServiceClient.java
index 231b3fc5c5c8..4b64627b1f36 100644
--- a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/BudgetServiceClient.java
+++ b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/BudgetServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -183,6 +184,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class BudgetServiceClient implements BackgroundResource {
diff --git a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/BudgetServiceSettings.java b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/BudgetServiceSettings.java
index 9b0dde0365e3..8618167d750c 100644
--- a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/BudgetServiceSettings.java
+++ b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/BudgetServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class BudgetServiceSettings extends ClientSettings<BudgetServiceSettings> {
diff --git a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/stub/BudgetServiceStub.java b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/stub/BudgetServiceStub.java
index 23d3700178d4..f7d946e9fc4c 100644
--- a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/stub/BudgetServiceStub.java
+++ b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/stub/BudgetServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.billing.budgets.v1beta1.UpdateBudgetRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class BudgetServiceStub implements BackgroundResource {
diff --git a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/stub/BudgetServiceStubSettings.java b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/stub/BudgetServiceStubSettings.java
index 8f987949e29c..d62455528cec 100644
--- a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/stub/BudgetServiceStubSettings.java
+++ b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/stub/BudgetServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/stub/GrpcBudgetServiceCallableFactory.java b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/stub/GrpcBudgetServiceCallableFactory.java
index cdca49c6e179..d7f587143bc0 100644
--- a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/stub/GrpcBudgetServiceCallableFactory.java
+++ b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/stub/GrpcBudgetServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcBudgetServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/stub/GrpcBudgetServiceStub.java b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/stub/GrpcBudgetServiceStub.java
index 6404b5d96ad8..9567da026045 100644
--- a/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/stub/GrpcBudgetServiceStub.java
+++ b/java-billingbudgets/google-cloud-billingbudgets/src/main/java/com/google/cloud/billing/budgets/v1beta1/stub/GrpcBudgetServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcBudgetServiceStub extends BudgetServiceStub {
diff --git a/java-billingbudgets/proto-google-cloud-billingbudgets-v1/src/main/java/com/google/cloud/billing/budgets/v1/BillingAccountName.java b/java-billingbudgets/proto-google-cloud-billingbudgets-v1/src/main/java/com/google/cloud/billing/budgets/v1/BillingAccountName.java
index a32dd93ddd9a..1cba35fe481f 100644
--- a/java-billingbudgets/proto-google-cloud-billingbudgets-v1/src/main/java/com/google/cloud/billing/budgets/v1/BillingAccountName.java
+++ b/java-billingbudgets/proto-google-cloud-billingbudgets-v1/src/main/java/com/google/cloud/billing/budgets/v1/BillingAccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BillingAccountName implements ResourceName {
   private static final PathTemplate BILLING_ACCOUNT =
diff --git a/java-billingbudgets/proto-google-cloud-billingbudgets-v1/src/main/java/com/google/cloud/billing/budgets/v1/BudgetName.java b/java-billingbudgets/proto-google-cloud-billingbudgets-v1/src/main/java/com/google/cloud/billing/budgets/v1/BudgetName.java
index 83b782b51557..ba0736c0582c 100644
--- a/java-billingbudgets/proto-google-cloud-billingbudgets-v1/src/main/java/com/google/cloud/billing/budgets/v1/BudgetName.java
+++ b/java-billingbudgets/proto-google-cloud-billingbudgets-v1/src/main/java/com/google/cloud/billing/budgets/v1/BudgetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BudgetName implements ResourceName {
   private static final PathTemplate BILLING_ACCOUNT_BUDGET =
diff --git a/java-billingbudgets/proto-google-cloud-billingbudgets-v1beta1/src/main/java/com/google/cloud/billing/budgets/v1beta1/BudgetName.java b/java-billingbudgets/proto-google-cloud-billingbudgets-v1beta1/src/main/java/com/google/cloud/billing/budgets/v1beta1/BudgetName.java
index 7e280deca3a6..aa63431c936b 100644
--- a/java-billingbudgets/proto-google-cloud-billingbudgets-v1beta1/src/main/java/com/google/cloud/billing/budgets/v1beta1/BudgetName.java
+++ b/java-billingbudgets/proto-google-cloud-billingbudgets-v1beta1/src/main/java/com/google/cloud/billing/budgets/v1beta1/BudgetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BudgetName implements ResourceName {
   private static final PathTemplate BILLING_ACCOUNT_BUDGET =
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/BinauthzManagementServiceV1Beta1Client.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/BinauthzManagementServiceV1Beta1Client.java
index a035960cc573..48fb2f8270df 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/BinauthzManagementServiceV1Beta1Client.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/BinauthzManagementServiceV1Beta1Client.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -264,6 +265,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class BinauthzManagementServiceV1Beta1Client implements BackgroundResource {
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/BinauthzManagementServiceV1Beta1Settings.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/BinauthzManagementServiceV1Beta1Settings.java
index cd85ef026966..ed7a5293711a 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/BinauthzManagementServiceV1Beta1Settings.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/BinauthzManagementServiceV1Beta1Settings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class BinauthzManagementServiceV1Beta1Settings
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/SystemPolicyV1Beta1Client.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/SystemPolicyV1Beta1Client.java
index 70a4d91c2d51..b1d1995e2089 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/SystemPolicyV1Beta1Client.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/SystemPolicyV1Beta1Client.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SystemPolicyV1Beta1Client implements BackgroundResource {
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/SystemPolicyV1Beta1Settings.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/SystemPolicyV1Beta1Settings.java
index d44a59b49f59..7fc23f3a8b1c 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/SystemPolicyV1Beta1Settings.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/SystemPolicyV1Beta1Settings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SystemPolicyV1Beta1Settings extends ClientSettings<SystemPolicyV1Beta1Settings> {
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/BinauthzManagementServiceV1Beta1Stub.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/BinauthzManagementServiceV1Beta1Stub.java
index f2bf0459b25e..a42ea85ca7b2 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/BinauthzManagementServiceV1Beta1Stub.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/BinauthzManagementServiceV1Beta1Stub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.binaryauthorization.v1beta1.UpdatePolicyRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class BinauthzManagementServiceV1Beta1Stub implements BackgroundResource {
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/BinauthzManagementServiceV1Beta1StubSettings.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/BinauthzManagementServiceV1Beta1StubSettings.java
index a8c7403330da..c88f8178aa7c 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/BinauthzManagementServiceV1Beta1StubSettings.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/BinauthzManagementServiceV1Beta1StubSettings.java
@@ -64,6 +64,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/GrpcBinauthzManagementServiceV1Beta1CallableFactory.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/GrpcBinauthzManagementServiceV1Beta1CallableFactory.java
index b7c712e81d68..b2f5afd0673f 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/GrpcBinauthzManagementServiceV1Beta1CallableFactory.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/GrpcBinauthzManagementServiceV1Beta1CallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcBinauthzManagementServiceV1Beta1CallableFactory
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/GrpcBinauthzManagementServiceV1Beta1Stub.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/GrpcBinauthzManagementServiceV1Beta1Stub.java
index c7de44d82a01..0d065fdd957d 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/GrpcBinauthzManagementServiceV1Beta1Stub.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/GrpcBinauthzManagementServiceV1Beta1Stub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcBinauthzManagementServiceV1Beta1Stub extends BinauthzManagementServiceV1Beta1Stub {
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/GrpcSystemPolicyV1Beta1CallableFactory.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/GrpcSystemPolicyV1Beta1CallableFactory.java
index b7eaaeadf11b..6605778419d2 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/GrpcSystemPolicyV1Beta1CallableFactory.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/GrpcSystemPolicyV1Beta1CallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSystemPolicyV1Beta1CallableFactory implements GrpcStubCallableFactory {
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/GrpcSystemPolicyV1Beta1Stub.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/GrpcSystemPolicyV1Beta1Stub.java
index 79d9a5107135..cf5c58cba856 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/GrpcSystemPolicyV1Beta1Stub.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/GrpcSystemPolicyV1Beta1Stub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSystemPolicyV1Beta1Stub extends SystemPolicyV1Beta1Stub {
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/HttpJsonBinauthzManagementServiceV1Beta1CallableFactory.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/HttpJsonBinauthzManagementServiceV1Beta1CallableFactory.java
index 6d7100113bb8..5d7d6e99d122 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/HttpJsonBinauthzManagementServiceV1Beta1CallableFactory.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/HttpJsonBinauthzManagementServiceV1Beta1CallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonBinauthzManagementServiceV1Beta1CallableFactory
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/HttpJsonBinauthzManagementServiceV1Beta1Stub.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/HttpJsonBinauthzManagementServiceV1Beta1Stub.java
index d9f33944437f..26dba1c8512d 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/HttpJsonBinauthzManagementServiceV1Beta1Stub.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/HttpJsonBinauthzManagementServiceV1Beta1Stub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonBinauthzManagementServiceV1Beta1Stub
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/HttpJsonSystemPolicyV1Beta1CallableFactory.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/HttpJsonSystemPolicyV1Beta1CallableFactory.java
index 1e33a5ec522b..8ecc3ae4d7bf 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/HttpJsonSystemPolicyV1Beta1CallableFactory.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/HttpJsonSystemPolicyV1Beta1CallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSystemPolicyV1Beta1CallableFactory
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/HttpJsonSystemPolicyV1Beta1Stub.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/HttpJsonSystemPolicyV1Beta1Stub.java
index 0395768130f2..49dc5a6ebe20 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/HttpJsonSystemPolicyV1Beta1Stub.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/HttpJsonSystemPolicyV1Beta1Stub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSystemPolicyV1Beta1Stub extends SystemPolicyV1Beta1Stub {
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/SystemPolicyV1Beta1Stub.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/SystemPolicyV1Beta1Stub.java
index 2dbfd71234bd..1dfab9b83324 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/SystemPolicyV1Beta1Stub.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/SystemPolicyV1Beta1Stub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.binaryauthorization.v1beta1.GetSystemPolicyRequest;
 import com.google.cloud.binaryauthorization.v1beta1.Policy;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SystemPolicyV1Beta1Stub implements BackgroundResource {
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/SystemPolicyV1Beta1StubSettings.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/SystemPolicyV1Beta1StubSettings.java
index b0da600dc66d..aae9c00b9586 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/SystemPolicyV1Beta1StubSettings.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/cloud/binaryauthorization/v1beta1/stub/SystemPolicyV1Beta1StubSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/BinauthzManagementServiceV1Client.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/BinauthzManagementServiceV1Client.java
index c75d09fcfdb0..ad690b08dd0e 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/BinauthzManagementServiceV1Client.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/BinauthzManagementServiceV1Client.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -263,6 +264,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BinauthzManagementServiceV1Client implements BackgroundResource {
   private final BinauthzManagementServiceV1Settings settings;
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/BinauthzManagementServiceV1Settings.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/BinauthzManagementServiceV1Settings.java
index 20688156b570..fe2dd05642d3 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/BinauthzManagementServiceV1Settings.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/BinauthzManagementServiceV1Settings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BinauthzManagementServiceV1Settings
     extends ClientSettings<BinauthzManagementServiceV1Settings> {
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/SystemPolicyV1Client.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/SystemPolicyV1Client.java
index 909b94bc3036..3eb6b312e018 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/SystemPolicyV1Client.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/SystemPolicyV1Client.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SystemPolicyV1Client implements BackgroundResource {
   private final SystemPolicyV1Settings settings;
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/SystemPolicyV1Settings.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/SystemPolicyV1Settings.java
index 3775b807ed49..8962ce661972 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/SystemPolicyV1Settings.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/SystemPolicyV1Settings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SystemPolicyV1Settings extends ClientSettings<SystemPolicyV1Settings> {
 
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/ValidationHelperV1Client.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/ValidationHelperV1Client.java
index eb0da67f6db6..b6229a272b37 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/ValidationHelperV1Client.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/ValidationHelperV1Client.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -133,6 +134,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ValidationHelperV1Client implements BackgroundResource {
   private final ValidationHelperV1Settings settings;
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/ValidationHelperV1Settings.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/ValidationHelperV1Settings.java
index 66f725b04bd7..e19d1ebe1c67 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/ValidationHelperV1Settings.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/ValidationHelperV1Settings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ValidationHelperV1Settings extends ClientSettings<ValidationHelperV1Settings> {
 
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/BinauthzManagementServiceV1Stub.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/BinauthzManagementServiceV1Stub.java
index 63880eb6bb11..28785a87cd1e 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/BinauthzManagementServiceV1Stub.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/BinauthzManagementServiceV1Stub.java
@@ -24,6 +24,7 @@
 import com.google.protos.google.cloud.binaryauthorization.v1.Resources;
 import com.google.protos.google.cloud.binaryauthorization.v1.Service;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BinauthzManagementServiceV1Stub implements BackgroundResource {
 
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/BinauthzManagementServiceV1StubSettings.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/BinauthzManagementServiceV1StubSettings.java
index 84b7be869e28..da8026ceb317 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/BinauthzManagementServiceV1StubSettings.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/BinauthzManagementServiceV1StubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BinauthzManagementServiceV1StubSettings
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcBinauthzManagementServiceV1CallableFactory.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcBinauthzManagementServiceV1CallableFactory.java
index ae764a7a2c57..3dfa8c949881 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcBinauthzManagementServiceV1CallableFactory.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcBinauthzManagementServiceV1CallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBinauthzManagementServiceV1CallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcBinauthzManagementServiceV1Stub.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcBinauthzManagementServiceV1Stub.java
index 6dae0ee72357..b524e0c411ef 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcBinauthzManagementServiceV1Stub.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcBinauthzManagementServiceV1Stub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBinauthzManagementServiceV1Stub extends BinauthzManagementServiceV1Stub {
   private static final MethodDescriptor<Service.GetPolicyRequest, Resources.Policy>
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcSystemPolicyV1CallableFactory.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcSystemPolicyV1CallableFactory.java
index fa49ed5e619c..23571787ba09 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcSystemPolicyV1CallableFactory.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcSystemPolicyV1CallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSystemPolicyV1CallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcSystemPolicyV1Stub.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcSystemPolicyV1Stub.java
index 54e8a62ac028..939d605cb423 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcSystemPolicyV1Stub.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcSystemPolicyV1Stub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSystemPolicyV1Stub extends SystemPolicyV1Stub {
   private static final MethodDescriptor<Service.GetSystemPolicyRequest, Resources.Policy>
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcValidationHelperV1CallableFactory.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcValidationHelperV1CallableFactory.java
index fa34ce06c753..a96a87f3fe65 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcValidationHelperV1CallableFactory.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcValidationHelperV1CallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcValidationHelperV1CallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcValidationHelperV1Stub.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcValidationHelperV1Stub.java
index 82fffc60fe47..1e74db32296c 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcValidationHelperV1Stub.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/GrpcValidationHelperV1Stub.java
@@ -30,6 +30,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcValidationHelperV1Stub extends ValidationHelperV1Stub {
   private static final MethodDescriptor<
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonBinauthzManagementServiceV1CallableFactory.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonBinauthzManagementServiceV1CallableFactory.java
index 90f0ab6f7d51..ec90832be6e9 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonBinauthzManagementServiceV1CallableFactory.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonBinauthzManagementServiceV1CallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBinauthzManagementServiceV1CallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonBinauthzManagementServiceV1Stub.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonBinauthzManagementServiceV1Stub.java
index 97d119982d10..1ba6c2a1fdb1 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonBinauthzManagementServiceV1Stub.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonBinauthzManagementServiceV1Stub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBinauthzManagementServiceV1Stub extends BinauthzManagementServiceV1Stub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonSystemPolicyV1CallableFactory.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonSystemPolicyV1CallableFactory.java
index 8ad74d25705c..80edcd8dedab 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonSystemPolicyV1CallableFactory.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonSystemPolicyV1CallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSystemPolicyV1CallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonSystemPolicyV1Stub.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonSystemPolicyV1Stub.java
index a3d964239e40..8abcdbe456ab 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonSystemPolicyV1Stub.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonSystemPolicyV1Stub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSystemPolicyV1Stub extends SystemPolicyV1Stub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonValidationHelperV1CallableFactory.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonValidationHelperV1CallableFactory.java
index 0d196ecfc339..fb351d7d65ba 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonValidationHelperV1CallableFactory.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonValidationHelperV1CallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonValidationHelperV1CallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonValidationHelperV1Stub.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonValidationHelperV1Stub.java
index ddc81e1d1960..fdd54978843b 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonValidationHelperV1Stub.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/HttpJsonValidationHelperV1Stub.java
@@ -37,6 +37,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonValidationHelperV1Stub extends ValidationHelperV1Stub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/SystemPolicyV1Stub.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/SystemPolicyV1Stub.java
index 6ff231bb336e..2df6cb5e21e3 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/SystemPolicyV1Stub.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/SystemPolicyV1Stub.java
@@ -21,6 +21,7 @@
 import com.google.protos.google.cloud.binaryauthorization.v1.Resources;
 import com.google.protos.google.cloud.binaryauthorization.v1.Service;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SystemPolicyV1Stub implements BackgroundResource {
 
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/SystemPolicyV1StubSettings.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/SystemPolicyV1StubSettings.java
index f0e4326c0d8c..41237c3271d8 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/SystemPolicyV1StubSettings.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/SystemPolicyV1StubSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SystemPolicyV1StubSettings extends StubSettings<SystemPolicyV1StubSettings> {
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/ValidationHelperV1Stub.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/ValidationHelperV1Stub.java
index dfd9d501268c..99e760df30e9 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/ValidationHelperV1Stub.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/ValidationHelperV1Stub.java
@@ -20,6 +20,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.protos.google.cloud.binaryauthorization.v1.Service;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -27,6 +28,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ValidationHelperV1Stub implements BackgroundResource {
 
diff --git a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/ValidationHelperV1StubSettings.java b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/ValidationHelperV1StubSettings.java
index e4efc39917a4..4b3872a0f9da 100644
--- a/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/ValidationHelperV1StubSettings.java
+++ b/java-binary-authorization/google-cloud-binary-authorization/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/stub/ValidationHelperV1StubSettings.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ValidationHelperV1StubSettings extends StubSettings<ValidationHelperV1StubSettings> {
diff --git a/java-binary-authorization/proto-google-cloud-binary-authorization-v1/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/AttestorName.java b/java-binary-authorization/proto-google-cloud-binary-authorization-v1/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/AttestorName.java
index 84639314a727..101d755c8b47 100644
--- a/java-binary-authorization/proto-google-cloud-binary-authorization-v1/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/AttestorName.java
+++ b/java-binary-authorization/proto-google-cloud-binary-authorization-v1/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/AttestorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AttestorName implements ResourceName {
   private static final PathTemplate PROJECT_ATTESTOR =
diff --git a/java-binary-authorization/proto-google-cloud-binary-authorization-v1/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/PolicyName.java b/java-binary-authorization/proto-google-cloud-binary-authorization-v1/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/PolicyName.java
index 3ddebc5a231d..9544fc575e21 100644
--- a/java-binary-authorization/proto-google-cloud-binary-authorization-v1/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/PolicyName.java
+++ b/java-binary-authorization/proto-google-cloud-binary-authorization-v1/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/PolicyName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-binary-authorization/proto-google-cloud-binary-authorization-v1/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/ProjectName.java b/java-binary-authorization/proto-google-cloud-binary-authorization-v1/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/ProjectName.java
index 241ce6e46d06..afbf6cef3427 100644
--- a/java-binary-authorization/proto-google-cloud-binary-authorization-v1/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/ProjectName.java
+++ b/java-binary-authorization/proto-google-cloud-binary-authorization-v1/src/main/java/com/google/protos/google/cloud/binaryauthorization/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-binary-authorization/proto-google-cloud-binary-authorization-v1beta1/src/main/java/com/google/cloud/binaryauthorization/v1beta1/AttestorName.java b/java-binary-authorization/proto-google-cloud-binary-authorization-v1beta1/src/main/java/com/google/cloud/binaryauthorization/v1beta1/AttestorName.java
index 2d44d8c7d9ad..1978a394c628 100644
--- a/java-binary-authorization/proto-google-cloud-binary-authorization-v1beta1/src/main/java/com/google/cloud/binaryauthorization/v1beta1/AttestorName.java
+++ b/java-binary-authorization/proto-google-cloud-binary-authorization-v1beta1/src/main/java/com/google/cloud/binaryauthorization/v1beta1/AttestorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AttestorName implements ResourceName {
   private static final PathTemplate PROJECT_ATTESTOR =
diff --git a/java-binary-authorization/proto-google-cloud-binary-authorization-v1beta1/src/main/java/com/google/cloud/binaryauthorization/v1beta1/PolicyName.java b/java-binary-authorization/proto-google-cloud-binary-authorization-v1beta1/src/main/java/com/google/cloud/binaryauthorization/v1beta1/PolicyName.java
index 39df1dc5a302..e15e5cf45e1e 100644
--- a/java-binary-authorization/proto-google-cloud-binary-authorization-v1beta1/src/main/java/com/google/cloud/binaryauthorization/v1beta1/PolicyName.java
+++ b/java-binary-authorization/proto-google-cloud-binary-authorization-v1beta1/src/main/java/com/google/cloud/binaryauthorization/v1beta1/PolicyName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-binary-authorization/proto-google-cloud-binary-authorization-v1beta1/src/main/java/com/google/cloud/binaryauthorization/v1beta1/ProjectName.java b/java-binary-authorization/proto-google-cloud-binary-authorization-v1beta1/src/main/java/com/google/cloud/binaryauthorization/v1beta1/ProjectName.java
index 0abb9e11fff9..316b51aecb91 100644
--- a/java-binary-authorization/proto-google-cloud-binary-authorization-v1beta1/src/main/java/com/google/cloud/binaryauthorization/v1beta1/ProjectName.java
+++ b/java-binary-authorization/proto-google-cloud-binary-authorization-v1beta1/src/main/java/com/google/cloud/binaryauthorization/v1beta1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/UsageServiceClient.java b/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/UsageServiceClient.java
index fa192e892ed3..845ca0d91d89 100644
--- a/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/UsageServiceClient.java
+++ b/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/UsageServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -217,6 +218,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class UsageServiceClient implements BackgroundResource {
diff --git a/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/UsageServiceSettings.java b/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/UsageServiceSettings.java
index 87ba20ac02cf..a5120b92f093 100644
--- a/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/UsageServiceSettings.java
+++ b/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/UsageServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class UsageServiceSettings extends ClientSettings<UsageServiceSettings> {
diff --git a/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/GrpcUsageServiceCallableFactory.java b/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/GrpcUsageServiceCallableFactory.java
index fe3d33327293..682e8c830c4a 100644
--- a/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/GrpcUsageServiceCallableFactory.java
+++ b/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/GrpcUsageServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcUsageServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/GrpcUsageServiceStub.java b/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/GrpcUsageServiceStub.java
index f372970f7fdb..4001e31613f6 100644
--- a/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/GrpcUsageServiceStub.java
+++ b/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/GrpcUsageServiceStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcUsageServiceStub extends UsageServiceStub {
diff --git a/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/HttpJsonUsageServiceCallableFactory.java b/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/HttpJsonUsageServiceCallableFactory.java
index 683d40f94bab..0b822f8ad889 100644
--- a/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/HttpJsonUsageServiceCallableFactory.java
+++ b/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/HttpJsonUsageServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonUsageServiceCallableFactory
diff --git a/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/HttpJsonUsageServiceStub.java b/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/HttpJsonUsageServiceStub.java
index 4110b7055474..8c7b181fd8fc 100644
--- a/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/HttpJsonUsageServiceStub.java
+++ b/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/HttpJsonUsageServiceStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonUsageServiceStub extends UsageServiceStub {
diff --git a/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/UsageServiceStub.java b/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/UsageServiceStub.java
index 8a1d60d09d5a..1c10eee06e9d 100644
--- a/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/UsageServiceStub.java
+++ b/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/UsageServiceStub.java
@@ -36,6 +36,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class UsageServiceStub implements BackgroundResource {
diff --git a/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/UsageServiceStubSettings.java b/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/UsageServiceStubSettings.java
index a7f507528a2d..44b315efc491 100644
--- a/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/UsageServiceStubSettings.java
+++ b/java-capacityplanner/google-cloud-capacityplanner/src/main/java/com/google/cloud/capacityplanner/v1beta/stub/UsageServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -140,6 +141,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-capacityplanner/proto-google-cloud-capacityplanner-v1beta/src/main/java/com/google/cloud/capacityplanner/v1beta/LocationName.java b/java-capacityplanner/proto-google-cloud-capacityplanner-v1beta/src/main/java/com/google/cloud/capacityplanner/v1beta/LocationName.java
index 0d335b25ab19..64a8a6431fa8 100644
--- a/java-capacityplanner/proto-google-cloud-capacityplanner-v1beta/src/main/java/com/google/cloud/capacityplanner/v1beta/LocationName.java
+++ b/java-capacityplanner/proto-google-cloud-capacityplanner-v1beta/src/main/java/com/google/cloud/capacityplanner/v1beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/CertificateManagerClient.java b/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/CertificateManagerClient.java
index f98a62f0faac..76a03fe38990 100644
--- a/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/CertificateManagerClient.java
+++ b/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/CertificateManagerClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -753,6 +754,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CertificateManagerClient implements BackgroundResource {
   private final CertificateManagerSettings settings;
diff --git a/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/CertificateManagerSettings.java b/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/CertificateManagerSettings.java
index f0d952231127..aea28149883d 100644
--- a/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/CertificateManagerSettings.java
+++ b/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/CertificateManagerSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CertificateManagerSettings extends ClientSettings<CertificateManagerSettings> {
 
diff --git a/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/CertificateManagerStub.java b/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/CertificateManagerStub.java
index ce1172769670..ca74059bc91d 100644
--- a/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/CertificateManagerStub.java
+++ b/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/CertificateManagerStub.java
@@ -77,6 +77,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CertificateManagerStub implements BackgroundResource {
 
diff --git a/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/CertificateManagerStubSettings.java b/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/CertificateManagerStubSettings.java
index 08845db3a3c0..619cc5f111d6 100644
--- a/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/CertificateManagerStubSettings.java
+++ b/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/CertificateManagerStubSettings.java
@@ -111,6 +111,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -190,6 +191,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CertificateManagerStubSettings extends StubSettings<CertificateManagerStubSettings> {
diff --git a/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/GrpcCertificateManagerCallableFactory.java b/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/GrpcCertificateManagerCallableFactory.java
index b37a8a03c355..3524f8eef813 100644
--- a/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/GrpcCertificateManagerCallableFactory.java
+++ b/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/GrpcCertificateManagerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCertificateManagerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/GrpcCertificateManagerStub.java b/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/GrpcCertificateManagerStub.java
index d69cc1a569fb..3aa88d4b59bd 100644
--- a/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/GrpcCertificateManagerStub.java
+++ b/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/GrpcCertificateManagerStub.java
@@ -86,6 +86,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -93,6 +94,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCertificateManagerStub extends CertificateManagerStub {
   private static final MethodDescriptor<ListCertificatesRequest, ListCertificatesResponse>
diff --git a/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/HttpJsonCertificateManagerCallableFactory.java b/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/HttpJsonCertificateManagerCallableFactory.java
index df142774489e..bc2e0825d8e6 100644
--- a/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/HttpJsonCertificateManagerCallableFactory.java
+++ b/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/HttpJsonCertificateManagerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCertificateManagerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/HttpJsonCertificateManagerStub.java b/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/HttpJsonCertificateManagerStub.java
index d962d7e4f1be..ebb6d709f664 100644
--- a/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/HttpJsonCertificateManagerStub.java
+++ b/java-certificate-manager/google-cloud-certificate-manager/src/main/java/com/google/cloud/certificatemanager/v1/stub/HttpJsonCertificateManagerStub.java
@@ -97,6 +97,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCertificateManagerStub extends CertificateManagerStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/CertificateIssuanceConfigName.java b/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/CertificateIssuanceConfigName.java
index 9a96e77baac8..003b2756f288 100644
--- a/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/CertificateIssuanceConfigName.java
+++ b/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/CertificateIssuanceConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CertificateIssuanceConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CERTIFICATE_ISSUANCE_CONFIG =
diff --git a/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/CertificateMapEntryName.java b/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/CertificateMapEntryName.java
index 3fb2e39e2fdf..f0d3f80d0a70 100644
--- a/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/CertificateMapEntryName.java
+++ b/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/CertificateMapEntryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CertificateMapEntryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CERTIFICATE_MAP_CERTIFICATE_MAP_ENTRY =
diff --git a/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/CertificateMapName.java b/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/CertificateMapName.java
index cebbae0b0c35..edd81c600706 100644
--- a/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/CertificateMapName.java
+++ b/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/CertificateMapName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CertificateMapName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CERTIFICATE_MAP =
diff --git a/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/CertificateName.java b/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/CertificateName.java
index 1fb79eaf6f4f..ffefcdfab4c5 100644
--- a/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/CertificateName.java
+++ b/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/CertificateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CertificateName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CERTIFICATE =
diff --git a/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/DnsAuthorizationName.java b/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/DnsAuthorizationName.java
index 8a51c2b8f6bc..87ff462c7037 100644
--- a/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/DnsAuthorizationName.java
+++ b/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/DnsAuthorizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DnsAuthorizationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DNS_AUTHORIZATION =
diff --git a/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/LocationName.java b/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/LocationName.java
index 6a1021a7ba1c..50348cfc0a2e 100644
--- a/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/LocationName.java
+++ b/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/TrustConfigName.java b/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/TrustConfigName.java
index f38b979e0449..a5e8b6ada38c 100644
--- a/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/TrustConfigName.java
+++ b/java-certificate-manager/proto-google-cloud-certificate-manager-v1/src/main/java/com/google/cloud/certificatemanager/v1/TrustConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TrustConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TRUST_CONFIG =
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/AgentServiceClient.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/AgentServiceClient.java
index 2555a783c586..940a9fd349c8 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/AgentServiceClient.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/AgentServiceClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1096,6 +1097,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentServiceClient implements BackgroundResource {
   private final AgentServiceSettings settings;
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/AgentServiceSettings.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/AgentServiceSettings.java
index fd39ed62f3ce..329c443fc5f8 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/AgentServiceSettings.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/AgentServiceSettings.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentServiceSettings extends ClientSettings<AgentServiceSettings> {
 
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/SessionServiceClient.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/SessionServiceClient.java
index eee67573da6d..9179a2a56687 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/SessionServiceClient.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/SessionServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -203,6 +204,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionServiceClient implements BackgroundResource {
   private final SessionServiceSettings settings;
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/SessionServiceSettings.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/SessionServiceSettings.java
index 0f166eb0f27c..40db52af6f20 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/SessionServiceSettings.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/SessionServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionServiceSettings extends ClientSettings<SessionServiceSettings> {
 
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/ToolServiceClient.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/ToolServiceClient.java
index 765abe5915aa..5caa7a5f962f 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/ToolServiceClient.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/ToolServiceClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -197,6 +198,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ToolServiceClient implements BackgroundResource {
   private final ToolServiceSettings settings;
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/ToolServiceSettings.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/ToolServiceSettings.java
index 386e4b17c04f..50e3bae614e4 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/ToolServiceSettings.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/ToolServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ToolServiceSettings extends ClientSettings<ToolServiceSettings> {
 
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/WidgetServiceClient.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/WidgetServiceClient.java
index 0692ae2bd31c..598e6f52a0d6 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/WidgetServiceClient.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/WidgetServiceClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -173,6 +174,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WidgetServiceClient implements BackgroundResource {
   private final WidgetServiceSettings settings;
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/WidgetServiceSettings.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/WidgetServiceSettings.java
index c85b6dfa2636..63315922be73 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/WidgetServiceSettings.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/WidgetServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WidgetServiceSettings extends ClientSettings<WidgetServiceSettings> {
 
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/AgentServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/AgentServiceStub.java
index 1d46de1622d5..0ed0576d8d7c 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/AgentServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/AgentServiceStub.java
@@ -112,6 +112,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AgentServiceStub implements BackgroundResource {
 
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/AgentServiceStubSettings.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/AgentServiceStubSettings.java
index 14a4e43f7c49..3bebfb8b1244 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/AgentServiceStubSettings.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/AgentServiceStubSettings.java
@@ -146,6 +146,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -223,6 +224,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AgentServiceStubSettings extends StubSettings<AgentServiceStubSettings> {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcAgentServiceCallableFactory.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcAgentServiceCallableFactory.java
index ab8744ed6c51..c897a169de19 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcAgentServiceCallableFactory.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcAgentServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAgentServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcAgentServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcAgentServiceStub.java
index 0a93b3a158d4..6b7dc4bb6cf0 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcAgentServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcAgentServiceStub.java
@@ -121,6 +121,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -128,6 +129,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAgentServiceStub extends AgentServiceStub {
   private static final MethodDescriptor<ListAppsRequest, ListAppsResponse>
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcSessionServiceCallableFactory.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcSessionServiceCallableFactory.java
index ad9c90f766c3..c8221e566de7 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcSessionServiceCallableFactory.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcSessionServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSessionServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcSessionServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcSessionServiceStub.java
index 1404a3a5b32c..611b6b83faf3 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcSessionServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcSessionServiceStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSessionServiceStub extends SessionServiceStub {
   private static final MethodDescriptor<RunSessionRequest, RunSessionResponse>
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcToolServiceCallableFactory.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcToolServiceCallableFactory.java
index 66ab55549a77..25461a37a4f2 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcToolServiceCallableFactory.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcToolServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcToolServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcToolServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcToolServiceStub.java
index e4f5888eb11c..c1c0d1af4a0f 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcToolServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcToolServiceStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcToolServiceStub extends ToolServiceStub {
   private static final MethodDescriptor<ExecuteToolRequest, ExecuteToolResponse>
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcWidgetServiceCallableFactory.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcWidgetServiceCallableFactory.java
index 9ab872ed6997..cc5ac763c8b8 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcWidgetServiceCallableFactory.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcWidgetServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWidgetServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcWidgetServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcWidgetServiceStub.java
index 46bcbf2d10f5..6836fcdaa550 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcWidgetServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/GrpcWidgetServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWidgetServiceStub extends WidgetServiceStub {
   private static final MethodDescriptor<GenerateChatTokenRequest, GenerateChatTokenResponse>
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonAgentServiceCallableFactory.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonAgentServiceCallableFactory.java
index 93513311faa1..a62bdf5f67b2 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonAgentServiceCallableFactory.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonAgentServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAgentServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonAgentServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonAgentServiceStub.java
index cc7352f548b1..1aecca4b9a49 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonAgentServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonAgentServiceStub.java
@@ -132,6 +132,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -139,6 +140,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAgentServiceStub extends AgentServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonSessionServiceCallableFactory.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonSessionServiceCallableFactory.java
index 693383f9e626..39de4e4e7f93 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonSessionServiceCallableFactory.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonSessionServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonSessionServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonSessionServiceStub.java
index 34227c0b4da8..b631b91b9ba4 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonSessionServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonSessionServiceStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionServiceStub extends SessionServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonToolServiceCallableFactory.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonToolServiceCallableFactory.java
index 91674cb3571e..6ad31e2887f2 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonToolServiceCallableFactory.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonToolServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonToolServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonToolServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonToolServiceStub.java
index c5abf373480f..07eca9b0e74a 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonToolServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonToolServiceStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonToolServiceStub extends ToolServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonWidgetServiceCallableFactory.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonWidgetServiceCallableFactory.java
index 956997d83b82..15b84aef0a93 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonWidgetServiceCallableFactory.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonWidgetServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWidgetServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonWidgetServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonWidgetServiceStub.java
index 7e7c65bcadde..8cf034877a41 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonWidgetServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/HttpJsonWidgetServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWidgetServiceStub extends WidgetServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/SessionServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/SessionServiceStub.java
index 0374044a1f45..b5a82cd48883 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/SessionServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/SessionServiceStub.java
@@ -31,6 +31,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SessionServiceStub implements BackgroundResource {
 
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/SessionServiceStubSettings.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/SessionServiceStubSettings.java
index 10d80d99284d..dcd5c342a3bf 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/SessionServiceStubSettings.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/SessionServiceStubSettings.java
@@ -63,6 +63,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SessionServiceStubSettings extends StubSettings<SessionServiceStubSettings> {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/ToolServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/ToolServiceStub.java
index 6a985c6215b9..de2e1af2c4b7 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/ToolServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/ToolServiceStub.java
@@ -31,6 +31,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ToolServiceStub implements BackgroundResource {
 
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/ToolServiceStubSettings.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/ToolServiceStubSettings.java
index 2551c0e379b9..5b6895da051d 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/ToolServiceStubSettings.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/ToolServiceStubSettings.java
@@ -63,6 +63,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ToolServiceStubSettings extends StubSettings<ToolServiceStubSettings> {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/WidgetServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/WidgetServiceStub.java
index eddbd746e902..5c7715d5a581 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/WidgetServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/WidgetServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class WidgetServiceStub implements BackgroundResource {
 
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/WidgetServiceStubSettings.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/WidgetServiceStubSettings.java
index 530d24a3f75d..8e11d6de6155 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/WidgetServiceStubSettings.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1/stub/WidgetServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class WidgetServiceStubSettings extends StubSettings<WidgetServiceStubSettings> {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/AgentServiceClient.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/AgentServiceClient.java
index 7b5b5965391b..48bf9c9d8d7b 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/AgentServiceClient.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/AgentServiceClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1152,6 +1153,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AgentServiceClient implements BackgroundResource {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/AgentServiceSettings.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/AgentServiceSettings.java
index f51e545b6c68..0bbe5f61785c 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/AgentServiceSettings.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/AgentServiceSettings.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AgentServiceSettings extends ClientSettings<AgentServiceSettings> {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/EvaluationServiceClient.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/EvaluationServiceClient.java
index 23bd4e3991d8..288972e68c48 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/EvaluationServiceClient.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/EvaluationServiceClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -848,6 +849,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EvaluationServiceClient implements BackgroundResource {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/EvaluationServiceSettings.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/EvaluationServiceSettings.java
index 351f0ecaec3c..07ab3d4c3400 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/EvaluationServiceSettings.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/EvaluationServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EvaluationServiceSettings extends ClientSettings<EvaluationServiceSettings> {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/SessionServiceClient.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/SessionServiceClient.java
index 63d7a289bc4e..428d3c07b171 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/SessionServiceClient.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/SessionServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -203,6 +204,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SessionServiceClient implements BackgroundResource {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/SessionServiceSettings.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/SessionServiceSettings.java
index bdfff0683506..2f064f3700f3 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/SessionServiceSettings.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/SessionServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SessionServiceSettings extends ClientSettings<SessionServiceSettings> {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/ToolServiceClient.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/ToolServiceClient.java
index 3b0b9c39aebc..38d5445bec24 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/ToolServiceClient.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/ToolServiceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -198,6 +199,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ToolServiceClient implements BackgroundResource {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/ToolServiceSettings.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/ToolServiceSettings.java
index 5ad7b70aef96..a203fa3941b7 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/ToolServiceSettings.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/ToolServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ToolServiceSettings extends ClientSettings<ToolServiceSettings> {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/WidgetServiceClient.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/WidgetServiceClient.java
index 77ea1eda85a6..61ed04edef3b 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/WidgetServiceClient.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/WidgetServiceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -173,6 +174,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class WidgetServiceClient implements BackgroundResource {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/WidgetServiceSettings.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/WidgetServiceSettings.java
index 7774d2430fb7..6ad7af346bf5 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/WidgetServiceSettings.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/WidgetServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class WidgetServiceSettings extends ClientSettings<WidgetServiceSettings> {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/AgentServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/AgentServiceStub.java
index 0a612fcb1a86..01f6cab737fa 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/AgentServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/AgentServiceStub.java
@@ -119,6 +119,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AgentServiceStub implements BackgroundResource {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/AgentServiceStubSettings.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/AgentServiceStubSettings.java
index 9b4ce4f8312a..fe997706480d 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/AgentServiceStubSettings.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/AgentServiceStubSettings.java
@@ -152,6 +152,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -229,6 +230,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/EvaluationServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/EvaluationServiceStub.java
index 38230bf19511..306e2b813cb1 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/EvaluationServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/EvaluationServiceStub.java
@@ -99,6 +99,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -106,6 +107,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class EvaluationServiceStub implements BackgroundResource {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/EvaluationServiceStubSettings.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/EvaluationServiceStubSettings.java
index 382031406eac..3e3454c364ca 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/EvaluationServiceStubSettings.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/EvaluationServiceStubSettings.java
@@ -132,6 +132,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -210,6 +211,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcAgentServiceCallableFactory.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcAgentServiceCallableFactory.java
index aba5b3ec6d5f..ed61909cf740 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcAgentServiceCallableFactory.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcAgentServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAgentServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcAgentServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcAgentServiceStub.java
index 6fd2715a8d4c..f3a01ce1b74b 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcAgentServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcAgentServiceStub.java
@@ -128,6 +128,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -135,6 +136,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAgentServiceStub extends AgentServiceStub {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcEvaluationServiceCallableFactory.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcEvaluationServiceCallableFactory.java
index 9150df5aa579..62d437278405 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcEvaluationServiceCallableFactory.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcEvaluationServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEvaluationServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcEvaluationServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcEvaluationServiceStub.java
index 0b2073325e7a..1ae9c092b106 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcEvaluationServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcEvaluationServiceStub.java
@@ -108,6 +108,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEvaluationServiceStub extends EvaluationServiceStub {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcSessionServiceCallableFactory.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcSessionServiceCallableFactory.java
index 26dd2ba715fc..4fe9f4a8ef8b 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcSessionServiceCallableFactory.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcSessionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSessionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcSessionServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcSessionServiceStub.java
index 26be1cd49c45..dd1fce19efca 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcSessionServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcSessionServiceStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSessionServiceStub extends SessionServiceStub {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcToolServiceCallableFactory.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcToolServiceCallableFactory.java
index 6005514110a3..9ab13ca2f0d3 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcToolServiceCallableFactory.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcToolServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcToolServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcToolServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcToolServiceStub.java
index 7f247b1913a9..4da58fbd522e 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcToolServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcToolServiceStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcToolServiceStub extends ToolServiceStub {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcWidgetServiceCallableFactory.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcWidgetServiceCallableFactory.java
index 5c9688d3b6f4..b995aac08421 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcWidgetServiceCallableFactory.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcWidgetServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcWidgetServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcWidgetServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcWidgetServiceStub.java
index 4e296a68144c..e4581b280973 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcWidgetServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/GrpcWidgetServiceStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcWidgetServiceStub extends WidgetServiceStub {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonAgentServiceCallableFactory.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonAgentServiceCallableFactory.java
index a97ceccf97f8..8ad2d645d5f1 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonAgentServiceCallableFactory.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonAgentServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAgentServiceCallableFactory
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonAgentServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonAgentServiceStub.java
index 2230511209e3..e45237eb31dd 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonAgentServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonAgentServiceStub.java
@@ -139,6 +139,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAgentServiceStub extends AgentServiceStub {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonEvaluationServiceCallableFactory.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonEvaluationServiceCallableFactory.java
index df667ac67ee8..1424c5fc55ce 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonEvaluationServiceCallableFactory.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonEvaluationServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEvaluationServiceCallableFactory
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonEvaluationServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonEvaluationServiceStub.java
index b9de5ebfb1f5..dbe4f30a7c9d 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonEvaluationServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonEvaluationServiceStub.java
@@ -119,6 +119,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEvaluationServiceStub extends EvaluationServiceStub {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonSessionServiceCallableFactory.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonSessionServiceCallableFactory.java
index 5b574c6f4840..faba9587341a 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonSessionServiceCallableFactory.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonSessionServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionServiceCallableFactory
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonSessionServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonSessionServiceStub.java
index 7c246b4ff2d9..be19367ad6f9 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonSessionServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonSessionServiceStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionServiceStub extends SessionServiceStub {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonToolServiceCallableFactory.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonToolServiceCallableFactory.java
index d28de6d9c40c..1930ee811118 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonToolServiceCallableFactory.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonToolServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonToolServiceCallableFactory
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonToolServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonToolServiceStub.java
index 688f4bd1d804..1e77fe4b4fa0 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonToolServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonToolServiceStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonToolServiceStub extends ToolServiceStub {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonWidgetServiceCallableFactory.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonWidgetServiceCallableFactory.java
index 3d22d2cf9201..51f96491e97a 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonWidgetServiceCallableFactory.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonWidgetServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonWidgetServiceCallableFactory
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonWidgetServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonWidgetServiceStub.java
index 7399a6f76168..ec80eddca9c3 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonWidgetServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/HttpJsonWidgetServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonWidgetServiceStub extends WidgetServiceStub {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/SessionServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/SessionServiceStub.java
index f6ebad67c695..4b994d8e838b 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/SessionServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/SessionServiceStub.java
@@ -32,6 +32,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SessionServiceStub implements BackgroundResource {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/SessionServiceStubSettings.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/SessionServiceStubSettings.java
index 5427c3a61d3b..0c007ad4719f 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/SessionServiceStubSettings.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/SessionServiceStubSettings.java
@@ -63,6 +63,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/ToolServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/ToolServiceStub.java
index 9320e2cfc0f2..f3b615597103 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/ToolServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/ToolServiceStub.java
@@ -32,6 +32,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ToolServiceStub implements BackgroundResource {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/ToolServiceStubSettings.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/ToolServiceStubSettings.java
index ee8b89d6117d..a1bd8ae5f665 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/ToolServiceStubSettings.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/ToolServiceStubSettings.java
@@ -63,6 +63,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/WidgetServiceStub.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/WidgetServiceStub.java
index e925919b445a..58c0a0876263 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/WidgetServiceStub.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/WidgetServiceStub.java
@@ -28,6 +28,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class WidgetServiceStub implements BackgroundResource {
diff --git a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/WidgetServiceStubSettings.java b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/WidgetServiceStubSettings.java
index b7bf22127ed7..9ae8bd4d7db0 100644
--- a/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/WidgetServiceStubSettings.java
+++ b/java-ces/google-cloud-ces/src/main/java/com/google/cloud/ces/v1beta/stub/WidgetServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/AgentName.java b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/AgentName.java
index a9513340e9d8..fd492c682e23 100644
--- a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/AgentName.java
+++ b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/AgentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_AGENT =
diff --git a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/AppName.java b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/AppName.java
index 39e61f6fc1dd..c66843509a18 100644
--- a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/AppName.java
+++ b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/AppName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP =
diff --git a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/AppVersionName.java b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/AppVersionName.java
index 6c55bbe43bd2..52a299b1807c 100644
--- a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/AppVersionName.java
+++ b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/AppVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_VERSION =
diff --git a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ChangelogName.java b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ChangelogName.java
index 4950fe152f6d..c649e82b2265 100644
--- a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ChangelogName.java
+++ b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ChangelogName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ChangelogName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_CHANGELOG =
diff --git a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ConversationName.java b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ConversationName.java
index 75158656a426..868334f503ae 100644
--- a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ConversationName.java
+++ b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ConversationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_CONVERSATION =
diff --git a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/DeploymentName.java b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/DeploymentName.java
index d7782951dd68..1d9967f6e2d0 100644
--- a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/DeploymentName.java
+++ b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/DeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_DEPLOYMENT =
diff --git a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ExampleName.java b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ExampleName.java
index 3063b7bb3032..53610cced7e5 100644
--- a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ExampleName.java
+++ b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ExampleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExampleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_EXAMPLE =
diff --git a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/GuardrailName.java b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/GuardrailName.java
index fb1bbab7149c..337a5488f414 100644
--- a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/GuardrailName.java
+++ b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/GuardrailName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GuardrailName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_GUARDRAIL =
diff --git a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/LocationName.java b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/LocationName.java
index 95d3992314c1..ab9c98265762 100644
--- a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/LocationName.java
+++ b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/SessionName.java b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/SessionName.java
index a78827b56d3f..7ebadace06bf 100644
--- a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/SessionName.java
+++ b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/SessionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_SESSION =
diff --git a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ToolName.java b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ToolName.java
index c21ac805ba95..7714043d0d77 100644
--- a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ToolName.java
+++ b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ToolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ToolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_TOOL =
diff --git a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ToolsetName.java b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ToolsetName.java
index c2e5ed790237..28e8d0cb89b9 100644
--- a/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ToolsetName.java
+++ b/java-ces/proto-google-cloud-ces-v1/src/main/java/com/google/cloud/ces/v1/ToolsetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ToolsetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_TOOLSET =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/AgentName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/AgentName.java
index acfe47f5e048..10633eeb88f7 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/AgentName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/AgentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_AGENT =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/AppName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/AppName.java
index addec21084b3..0c77584aa7b4 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/AppName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/AppName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/AppVersionName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/AppVersionName.java
index c5a4a1d8204e..c66eda0f4fda 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/AppVersionName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/AppVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_VERSION =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ChangelogName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ChangelogName.java
index 2729c7bbf865..2a01bdecfbe0 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ChangelogName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ChangelogName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ChangelogName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_CHANGELOG =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ConversationName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ConversationName.java
index dac1f3dfa02c..89d24f3fb50c 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ConversationName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ConversationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_CONVERSATION =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/DeploymentName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/DeploymentName.java
index f46aad1110db..9577062cfe2e 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/DeploymentName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/DeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_DEPLOYMENT =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationDatasetName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationDatasetName.java
index cb93510bfca1..f4a252c7fd29 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationDatasetName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationDatasetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EvaluationDatasetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_EVALUATION_DATASET =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationExpectationName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationExpectationName.java
index 921ffc3305ab..ec9859c93915 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationExpectationName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationExpectationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EvaluationExpectationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_EVALUATION_EXPECTATION =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationName.java
index 2c6cfa2df62e..9e6f0fd39391 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EvaluationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_EVALUATION =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationResultName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationResultName.java
index 72f4d0c3dc96..053db0fc22dd 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationResultName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationResultName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EvaluationResultName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_EVALUATION_EVALUATION_RESULT =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationRunName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationRunName.java
index 8cc40a1ee129..1cf857a73140 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationRunName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/EvaluationRunName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EvaluationRunName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_EVALUATION_RUN =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ExampleName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ExampleName.java
index 348d7c09bc7a..69425a3916ff 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ExampleName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ExampleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExampleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_EXAMPLE =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/GuardrailName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/GuardrailName.java
index 5d9a04ead381..520ff14d858e 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/GuardrailName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/GuardrailName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GuardrailName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_GUARDRAIL =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/LocationName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/LocationName.java
index 03da069f58ff..6f18a880ae0e 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/LocationName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ScheduledEvaluationRunName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ScheduledEvaluationRunName.java
index eea8ac3778f2..8b53841f3bc7 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ScheduledEvaluationRunName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ScheduledEvaluationRunName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ScheduledEvaluationRunName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_SCHEDULED_EVALUATION_RUN =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/SecuritySettingsName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/SecuritySettingsName.java
index 71f5e9c350b6..5cf2811bda00 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/SecuritySettingsName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/SecuritySettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecuritySettingsName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/SessionName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/SessionName.java
index 0f448b120da2..3b591cce8b0b 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/SessionName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/SessionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_SESSION =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ToolName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ToolName.java
index 7c76759b3088..0e473e0b5f17 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ToolName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ToolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ToolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_TOOL =
diff --git a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ToolsetName.java b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ToolsetName.java
index aed479f37f93..eeb367851152 100644
--- a/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ToolsetName.java
+++ b/java-ces/proto-google-cloud-ces-v1beta/src/main/java/com/google/cloud/ces/v1beta/ToolsetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ToolsetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APP_TOOLSET =
diff --git a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/CloudChannelReportsServiceClient.java b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/CloudChannelReportsServiceClient.java
index e92a6f8fdc11..e7d4a6fd7c47 100644
--- a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/CloudChannelReportsServiceClient.java
+++ b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/CloudChannelReportsServiceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -208,6 +209,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class CloudChannelReportsServiceClient implements BackgroundResource {
diff --git a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/CloudChannelReportsServiceSettings.java b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/CloudChannelReportsServiceSettings.java
index b98e731a465e..a8847a1e76ad 100644
--- a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/CloudChannelReportsServiceSettings.java
+++ b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/CloudChannelReportsServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class CloudChannelReportsServiceSettings
diff --git a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/CloudChannelServiceClient.java b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/CloudChannelServiceClient.java
index cb32f3256710..39ac75e0bf48 100644
--- a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/CloudChannelServiceClient.java
+++ b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/CloudChannelServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1372,6 +1373,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudChannelServiceClient implements BackgroundResource {
   private final CloudChannelServiceSettings settings;
diff --git a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/CloudChannelServiceSettings.java b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/CloudChannelServiceSettings.java
index 14aef0531fda..c3ca822b5f31 100644
--- a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/CloudChannelServiceSettings.java
+++ b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/CloudChannelServiceSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -130,6 +131,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudChannelServiceSettings extends ClientSettings<CloudChannelServiceSettings> {
 
diff --git a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/CloudChannelReportsServiceStub.java b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/CloudChannelReportsServiceStub.java
index ac34dd36e8b6..f31ff880a16c 100644
--- a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/CloudChannelReportsServiceStub.java
+++ b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/CloudChannelReportsServiceStub.java
@@ -32,6 +32,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public abstract class CloudChannelReportsServiceStub implements BackgroundResource {
diff --git a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/CloudChannelReportsServiceStubSettings.java b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/CloudChannelReportsServiceStubSettings.java
index 3f9b34d1a3bd..3155638b1e4f 100644
--- a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/CloudChannelReportsServiceStubSettings.java
+++ b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/CloudChannelReportsServiceStubSettings.java
@@ -68,6 +68,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/CloudChannelServiceStub.java b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/CloudChannelServiceStub.java
index 398c023b980f..a978c7fec09a 100644
--- a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/CloudChannelServiceStub.java
+++ b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/CloudChannelServiceStub.java
@@ -117,6 +117,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CloudChannelServiceStub implements BackgroundResource {
 
diff --git a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/CloudChannelServiceStubSettings.java b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/CloudChannelServiceStubSettings.java
index 335b93987af2..33c9551c153b 100644
--- a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/CloudChannelServiceStubSettings.java
+++ b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/CloudChannelServiceStubSettings.java
@@ -160,6 +160,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -238,6 +239,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CloudChannelServiceStubSettings extends StubSettings<CloudChannelServiceStubSettings> {
diff --git a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/GrpcCloudChannelReportsServiceCallableFactory.java b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/GrpcCloudChannelReportsServiceCallableFactory.java
index f37a25b985bf..0c1d7c3fe603 100644
--- a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/GrpcCloudChannelReportsServiceCallableFactory.java
+++ b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/GrpcCloudChannelReportsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class GrpcCloudChannelReportsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/GrpcCloudChannelReportsServiceStub.java b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/GrpcCloudChannelReportsServiceStub.java
index 2fd6545d5832..a1bb684b2128 100644
--- a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/GrpcCloudChannelReportsServiceStub.java
+++ b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/GrpcCloudChannelReportsServiceStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class GrpcCloudChannelReportsServiceStub extends CloudChannelReportsServiceStub {
diff --git a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/GrpcCloudChannelServiceCallableFactory.java b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/GrpcCloudChannelServiceCallableFactory.java
index 74b35623ef4e..831041226935 100644
--- a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/GrpcCloudChannelServiceCallableFactory.java
+++ b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/GrpcCloudChannelServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudChannelServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/GrpcCloudChannelServiceStub.java b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/GrpcCloudChannelServiceStub.java
index 4325009705ae..192738ace462 100644
--- a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/GrpcCloudChannelServiceStub.java
+++ b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/GrpcCloudChannelServiceStub.java
@@ -126,6 +126,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -133,6 +134,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudChannelServiceStub extends CloudChannelServiceStub {
   private static final MethodDescriptor<ListCustomersRequest, ListCustomersResponse>
diff --git a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/HttpJsonCloudChannelReportsServiceCallableFactory.java b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/HttpJsonCloudChannelReportsServiceCallableFactory.java
index a155719b12c0..a0e7fa08873b 100644
--- a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/HttpJsonCloudChannelReportsServiceCallableFactory.java
+++ b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/HttpJsonCloudChannelReportsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudChannelReportsServiceCallableFactory
diff --git a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/HttpJsonCloudChannelReportsServiceStub.java b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/HttpJsonCloudChannelReportsServiceStub.java
index 6ed02965eb71..fae2fe28a08d 100644
--- a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/HttpJsonCloudChannelReportsServiceStub.java
+++ b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/HttpJsonCloudChannelReportsServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudChannelReportsServiceStub extends CloudChannelReportsServiceStub {
diff --git a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/HttpJsonCloudChannelServiceCallableFactory.java b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/HttpJsonCloudChannelServiceCallableFactory.java
index cb1934437a4f..4b757284682e 100644
--- a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/HttpJsonCloudChannelServiceCallableFactory.java
+++ b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/HttpJsonCloudChannelServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudChannelServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/HttpJsonCloudChannelServiceStub.java b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/HttpJsonCloudChannelServiceStub.java
index 5ba6dfdc9c8b..26f3d7adb5d6 100644
--- a/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/HttpJsonCloudChannelServiceStub.java
+++ b/java-channel/google-cloud-channel/src/main/java/com/google/cloud/channel/v1/stub/HttpJsonCloudChannelServiceStub.java
@@ -137,6 +137,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudChannelServiceStub extends CloudChannelServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/AccountName.java b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/AccountName.java
index a43265b48f4a..047ee1fe851f 100644
--- a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/AccountName.java
+++ b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ChannelPartnerLinkName.java b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ChannelPartnerLinkName.java
index 40f876ba0d18..05813b026fce 100644
--- a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ChannelPartnerLinkName.java
+++ b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ChannelPartnerLinkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ChannelPartnerLinkName implements ResourceName {
   private static final PathTemplate ACCOUNT_CHANNEL_PARTNER_LINK =
diff --git a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ChannelPartnerRepricingConfigName.java b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ChannelPartnerRepricingConfigName.java
index f0efcf0e678a..dc67056068e6 100644
--- a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ChannelPartnerRepricingConfigName.java
+++ b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ChannelPartnerRepricingConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ChannelPartnerRepricingConfigName implements ResourceName {
   private static final PathTemplate ACCOUNT_CHANNEL_PARTNER_CHANNEL_PARTNER_REPRICING_CONFIG =
diff --git a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/CustomerName.java b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/CustomerName.java
index 5bd7841a017c..c2e049035854 100644
--- a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/CustomerName.java
+++ b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/CustomerName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomerName implements ResourceName {
   private static final PathTemplate ACCOUNT_CUSTOMER =
diff --git a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/CustomerRepricingConfigName.java b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/CustomerRepricingConfigName.java
index 5cbda22d5058..fd64247ebf6d 100644
--- a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/CustomerRepricingConfigName.java
+++ b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/CustomerRepricingConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomerRepricingConfigName implements ResourceName {
   private static final PathTemplate ACCOUNT_CUSTOMER_CUSTOMER_REPRICING_CONFIG =
diff --git a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/EntitlementName.java b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/EntitlementName.java
index d1c16244b932..abf426746088 100644
--- a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/EntitlementName.java
+++ b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/EntitlementName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntitlementName implements ResourceName {
   private static final PathTemplate ACCOUNT_CUSTOMER_ENTITLEMENT =
diff --git a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/OfferName.java b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/OfferName.java
index 54f0c2acb56a..f5b88b0ecb58 100644
--- a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/OfferName.java
+++ b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/OfferName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OfferName implements ResourceName {
   private static final PathTemplate ACCOUNT_OFFER =
diff --git a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ProductName.java b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ProductName.java
index 6eeffe73f76f..9e609c540ec8 100644
--- a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ProductName.java
+++ b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ProductName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductName implements ResourceName {
   private static final PathTemplate PRODUCT =
diff --git a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ReportJobName.java b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ReportJobName.java
index c04b679ca160..a8440c952ca9 100644
--- a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ReportJobName.java
+++ b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ReportJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReportJobName implements ResourceName {
   private static final PathTemplate ACCOUNT_REPORT_JOB =
diff --git a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ReportName.java b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ReportName.java
index 96f3222e6a8f..51b193f41feb 100644
--- a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ReportName.java
+++ b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/ReportName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReportName implements ResourceName {
   private static final PathTemplate ACCOUNT_REPORT =
diff --git a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/SkuGroupName.java b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/SkuGroupName.java
index 736749d0409b..e37894c7bfea 100644
--- a/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/SkuGroupName.java
+++ b/java-channel/proto-google-cloud-channel-v1/src/main/java/com/google/cloud/channel/v1/SkuGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SkuGroupName implements ResourceName {
   private static final PathTemplate ACCOUNT_SKU_GROUP =
diff --git a/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/ChatServiceClient.java b/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/ChatServiceClient.java
index ef6119a741af..87bc53544a72 100644
--- a/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/ChatServiceClient.java
+++ b/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/ChatServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1067,6 +1068,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ChatServiceClient implements BackgroundResource {
   private final ChatServiceSettings settings;
diff --git a/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/ChatServiceSettings.java b/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/ChatServiceSettings.java
index 414c7437df2f..0c7225766902 100644
--- a/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/ChatServiceSettings.java
+++ b/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/ChatServiceSettings.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -94,6 +95,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ChatServiceSettings extends ClientSettings<ChatServiceSettings> {
 
diff --git a/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/ChatServiceStub.java b/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/ChatServiceStub.java
index 8f023fcf7c43..912ef94924d2 100644
--- a/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/ChatServiceStub.java
+++ b/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/ChatServiceStub.java
@@ -99,6 +99,7 @@
 import com.google.chat.v1.UploadAttachmentResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -106,6 +107,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ChatServiceStub implements BackgroundResource {
 
diff --git a/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/ChatServiceStubSettings.java b/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/ChatServiceStubSettings.java
index b3ff9092fe8f..7bdc62fa03bd 100644
--- a/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/ChatServiceStubSettings.java
+++ b/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/ChatServiceStubSettings.java
@@ -132,6 +132,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -183,6 +184,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ChatServiceStubSettings extends StubSettings<ChatServiceStubSettings> {
diff --git a/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/GrpcChatServiceCallableFactory.java b/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/GrpcChatServiceCallableFactory.java
index aa59dc564680..0a0569666594 100644
--- a/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/GrpcChatServiceCallableFactory.java
+++ b/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/GrpcChatServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcChatServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/GrpcChatServiceStub.java b/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/GrpcChatServiceStub.java
index 54f7371c6f4b..add629e181f6 100644
--- a/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/GrpcChatServiceStub.java
+++ b/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/GrpcChatServiceStub.java
@@ -109,6 +109,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcChatServiceStub extends ChatServiceStub {
   private static final MethodDescriptor<CreateMessageRequest, Message>
diff --git a/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/HttpJsonChatServiceCallableFactory.java b/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/HttpJsonChatServiceCallableFactory.java
index 8503d57238f4..f7c2f250a582 100644
--- a/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/HttpJsonChatServiceCallableFactory.java
+++ b/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/HttpJsonChatServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonChatServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/HttpJsonChatServiceStub.java b/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/HttpJsonChatServiceStub.java
index f67165555ba8..d1336ca8a894 100644
--- a/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/HttpJsonChatServiceStub.java
+++ b/java-chat/google-cloud-chat/src/main/java/com/google/chat/v1/stub/HttpJsonChatServiceStub.java
@@ -116,6 +116,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonChatServiceStub extends ChatServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/AttachmentName.java b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/AttachmentName.java
index 21cd6993d123..8d1141b0657d 100644
--- a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/AttachmentName.java
+++ b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/AttachmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AttachmentName implements ResourceName {
   private static final PathTemplate SPACE_MESSAGE_ATTACHMENT =
diff --git a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/CustomEmojiName.java b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/CustomEmojiName.java
index 4e95a50b89b4..6e2c3c12ce1d 100644
--- a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/CustomEmojiName.java
+++ b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/CustomEmojiName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomEmojiName implements ResourceName {
   private static final PathTemplate CUSTOM_EMOJI =
diff --git a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/MembershipName.java b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/MembershipName.java
index c4392769dcfa..208389ada6e0 100644
--- a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/MembershipName.java
+++ b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/MembershipName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MembershipName implements ResourceName {
   private static final PathTemplate SPACE_MEMBER =
diff --git a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/MessageName.java b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/MessageName.java
index ffe956a7c94c..a0a802b5ef04 100644
--- a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/MessageName.java
+++ b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/MessageName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MessageName implements ResourceName {
   private static final PathTemplate SPACE_MESSAGE =
diff --git a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/ReactionName.java b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/ReactionName.java
index df1ef3ebc9cf..c29e6aa195e6 100644
--- a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/ReactionName.java
+++ b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/ReactionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReactionName implements ResourceName {
   private static final PathTemplate SPACE_MESSAGE_REACTION =
diff --git a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SectionItemName.java b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SectionItemName.java
index 1fb239f27860..04d9a6cfbd03 100644
--- a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SectionItemName.java
+++ b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SectionItemName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SectionItemName implements ResourceName {
   private static final PathTemplate USER_SECTION_ITEM =
diff --git a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SectionName.java b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SectionName.java
index 92610ea11188..18c52f53acb6 100644
--- a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SectionName.java
+++ b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SectionName implements ResourceName {
   private static final PathTemplate USER_SECTION =
diff --git a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SpaceEventName.java b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SpaceEventName.java
index 5b1d8c9dc21a..0663ed40a27e 100644
--- a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SpaceEventName.java
+++ b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SpaceEventName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpaceEventName implements ResourceName {
   private static final PathTemplate SPACE_SPACE_EVENT =
diff --git a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SpaceName.java b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SpaceName.java
index a702b84d94fe..0b1c24c0bc47 100644
--- a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SpaceName.java
+++ b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SpaceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpaceName implements ResourceName {
   private static final PathTemplate SPACE = PathTemplate.createWithoutUrlEncoding("spaces/{space}");
diff --git a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SpaceNotificationSettingName.java b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SpaceNotificationSettingName.java
index 5d5cb404e5ff..80bb635590c0 100644
--- a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SpaceNotificationSettingName.java
+++ b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SpaceNotificationSettingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpaceNotificationSettingName implements ResourceName {
   private static final PathTemplate USER_SPACE =
diff --git a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SpaceReadStateName.java b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SpaceReadStateName.java
index 62c23ca84745..18429eaf8367 100644
--- a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SpaceReadStateName.java
+++ b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/SpaceReadStateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpaceReadStateName implements ResourceName {
   private static final PathTemplate USER_SPACE =
diff --git a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/ThreadReadStateName.java b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/ThreadReadStateName.java
index 0e5ea16e8010..c6ae9f2f0ebc 100644
--- a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/ThreadReadStateName.java
+++ b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/ThreadReadStateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ThreadReadStateName implements ResourceName {
   private static final PathTemplate USER_SPACE_THREAD =
diff --git a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/UserName.java b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/UserName.java
index 87e915cc1b55..cd62a26f3bda 100644
--- a/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/UserName.java
+++ b/java-chat/proto-google-cloud-chat-v1/src/main/java/com/google/chat/v1/UserName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserName implements ResourceName {
   private static final PathTemplate USER = PathTemplate.createWithoutUrlEncoding("users/{user}");
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/BigQueryExportServiceClient.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/BigQueryExportServiceClient.java
index 327ef1dbbfbf..de7359f4b5dc 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/BigQueryExportServiceClient.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/BigQueryExportServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -170,6 +171,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BigQueryExportServiceClient implements BackgroundResource {
   private final BigQueryExportServiceSettings settings;
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/BigQueryExportServiceSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/BigQueryExportServiceSettings.java
index 12c6b5634bb9..d3ec926a66a7 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/BigQueryExportServiceSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/BigQueryExportServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BigQueryExportServiceSettings extends ClientSettings<BigQueryExportServiceSettings> {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DashboardChartServiceClient.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DashboardChartServiceClient.java
index d69133ef191a..1449cd224788 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DashboardChartServiceClient.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DashboardChartServiceClient.java
@@ -24,6 +24,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DashboardChartServiceClient implements BackgroundResource {
   private final DashboardChartServiceSettings settings;
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DashboardChartServiceSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DashboardChartServiceSettings.java
index 752e1f6d6bb1..bce395befc57 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DashboardChartServiceSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DashboardChartServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DashboardChartServiceSettings extends ClientSettings<DashboardChartServiceSettings> {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DashboardQueryServiceClient.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DashboardQueryServiceClient.java
index dcb293c59f46..98d37b9deba0 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DashboardQueryServiceClient.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DashboardQueryServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DashboardQueryServiceClient implements BackgroundResource {
   private final DashboardQueryServiceSettings settings;
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DashboardQueryServiceSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DashboardQueryServiceSettings.java
index e0cf3a7f17fa..16126bf15ac8 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DashboardQueryServiceSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DashboardQueryServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DashboardQueryServiceSettings extends ClientSettings<DashboardQueryServiceSettings> {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DataAccessControlServiceClient.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DataAccessControlServiceClient.java
index 50f578720207..6efd199f6d4c 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DataAccessControlServiceClient.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DataAccessControlServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -318,6 +319,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataAccessControlServiceClient implements BackgroundResource {
   private final DataAccessControlServiceSettings settings;
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DataAccessControlServiceSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DataAccessControlServiceSettings.java
index c1a7ff731235..3735c38214fa 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DataAccessControlServiceSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DataAccessControlServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataAccessControlServiceSettings
     extends ClientSettings<DataAccessControlServiceSettings> {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DataTableServiceClient.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DataTableServiceClient.java
index 6c6b7234cac0..6ef69b721e0c 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DataTableServiceClient.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DataTableServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -397,6 +398,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataTableServiceClient implements BackgroundResource {
   private final DataTableServiceSettings settings;
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DataTableServiceSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DataTableServiceSettings.java
index cab2a9cf8a0e..cac44454d7b0 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DataTableServiceSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/DataTableServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataTableServiceSettings extends ClientSettings<DataTableServiceSettings> {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/EntityServiceClient.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/EntityServiceClient.java
index e5729153b0cf..bf0513dec9c6 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/EntityServiceClient.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/EntityServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -213,6 +214,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntityServiceClient implements BackgroundResource {
   private final EntityServiceSettings settings;
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/EntityServiceSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/EntityServiceSettings.java
index 9a4995bf8e72..294902026e73 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/EntityServiceSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/EntityServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntityServiceSettings extends ClientSettings<EntityServiceSettings> {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/FeaturedContentNativeDashboardServiceClient.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/FeaturedContentNativeDashboardServiceClient.java
index 1fb020c317cc..d1fa294ce3a5 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/FeaturedContentNativeDashboardServiceClient.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/FeaturedContentNativeDashboardServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -186,6 +187,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeaturedContentNativeDashboardServiceClient implements BackgroundResource {
   private final FeaturedContentNativeDashboardServiceSettings settings;
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/FeaturedContentNativeDashboardServiceSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/FeaturedContentNativeDashboardServiceSettings.java
index ada830c9d275..f67f94180aa1 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/FeaturedContentNativeDashboardServiceSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/FeaturedContentNativeDashboardServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeaturedContentNativeDashboardServiceSettings
     extends ClientSettings<FeaturedContentNativeDashboardServiceSettings> {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/InstanceServiceClient.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/InstanceServiceClient.java
index 3c2c45393118..3558057497ce 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/InstanceServiceClient.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/InstanceServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceServiceClient implements BackgroundResource {
   private final InstanceServiceSettings settings;
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/InstanceServiceSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/InstanceServiceSettings.java
index ea232e89180c..a60de0aca92b 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/InstanceServiceSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/InstanceServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceServiceSettings extends ClientSettings<InstanceServiceSettings> {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/NativeDashboardServiceClient.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/NativeDashboardServiceClient.java
index 2c3a1d82b2a5..04d851b2670b 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/NativeDashboardServiceClient.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/NativeDashboardServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -353,6 +354,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NativeDashboardServiceClient implements BackgroundResource {
   private final NativeDashboardServiceSettings settings;
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/NativeDashboardServiceSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/NativeDashboardServiceSettings.java
index 39468e2eac46..15a985d74927 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/NativeDashboardServiceSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/NativeDashboardServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NativeDashboardServiceSettings extends ClientSettings<NativeDashboardServiceSettings> {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/ReferenceListServiceClient.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/ReferenceListServiceClient.java
index a85a0bb8a1e5..d96b3d8fef31 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/ReferenceListServiceClient.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/ReferenceListServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -213,6 +214,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReferenceListServiceClient implements BackgroundResource {
   private final ReferenceListServiceSettings settings;
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/ReferenceListServiceSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/ReferenceListServiceSettings.java
index 900ef1b297ed..1ad73d6708e8 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/ReferenceListServiceSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/ReferenceListServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReferenceListServiceSettings extends ClientSettings<ReferenceListServiceSettings> {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/RuleExecutionErrorServiceClient.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/RuleExecutionErrorServiceClient.java
index 5caed1c3ede5..7122065d5525 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/RuleExecutionErrorServiceClient.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/RuleExecutionErrorServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RuleExecutionErrorServiceClient implements BackgroundResource {
   private final RuleExecutionErrorServiceSettings settings;
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/RuleExecutionErrorServiceSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/RuleExecutionErrorServiceSettings.java
index 43fab7ef825a..bcf40ac90a91 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/RuleExecutionErrorServiceSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/RuleExecutionErrorServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RuleExecutionErrorServiceSettings
     extends ClientSettings<RuleExecutionErrorServiceSettings> {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/RuleServiceClient.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/RuleServiceClient.java
index 457c656ac7ea..1d6a5ce5fbae 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/RuleServiceClient.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/RuleServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -373,6 +374,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RuleServiceClient implements BackgroundResource {
   private final RuleServiceSettings settings;
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/RuleServiceSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/RuleServiceSettings.java
index eeea68c78840..efd14db069c2 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/RuleServiceSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/RuleServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RuleServiceSettings extends ClientSettings<RuleServiceSettings> {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/BigQueryExportServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/BigQueryExportServiceStub.java
index 44ba18932c3d..abe8d6fb5fcf 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/BigQueryExportServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/BigQueryExportServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.cloud.chronicle.v1.ProvisionBigQueryExportRequest;
 import com.google.cloud.chronicle.v1.UpdateBigQueryExportRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BigQueryExportServiceStub implements BackgroundResource {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/BigQueryExportServiceStubSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/BigQueryExportServiceStubSettings.java
index cd12b94ad386..dc0b4c09bafd 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/BigQueryExportServiceStubSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/BigQueryExportServiceStubSettings.java
@@ -48,6 +48,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BigQueryExportServiceStubSettings
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DashboardChartServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DashboardChartServiceStub.java
index 154ca5eca56a..a51450e91149 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DashboardChartServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DashboardChartServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.cloud.chronicle.v1.DashboardChart;
 import com.google.cloud.chronicle.v1.GetDashboardChartRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DashboardChartServiceStub implements BackgroundResource {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DashboardChartServiceStubSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DashboardChartServiceStubSettings.java
index 26b716cabf02..4bd5aa03da87 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DashboardChartServiceStubSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DashboardChartServiceStubSettings.java
@@ -48,6 +48,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DashboardChartServiceStubSettings
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DashboardQueryServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DashboardQueryServiceStub.java
index 8a1f8d4328af..b1346bc40a99 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DashboardQueryServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DashboardQueryServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.cloud.chronicle.v1.ExecuteDashboardQueryResponse;
 import com.google.cloud.chronicle.v1.GetDashboardQueryRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DashboardQueryServiceStub implements BackgroundResource {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DashboardQueryServiceStubSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DashboardQueryServiceStubSettings.java
index 4307d3815758..a21ddd62afea 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DashboardQueryServiceStubSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DashboardQueryServiceStubSettings.java
@@ -48,6 +48,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DashboardQueryServiceStubSettings
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DataAccessControlServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DataAccessControlServiceStub.java
index 8e5b3c1e0b0e..7c40986b70c4 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DataAccessControlServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DataAccessControlServiceStub.java
@@ -37,6 +37,7 @@
 import com.google.cloud.chronicle.v1.UpdateDataAccessScopeRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataAccessControlServiceStub implements BackgroundResource {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DataAccessControlServiceStubSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DataAccessControlServiceStubSettings.java
index 1baec45aefcc..dd77cc69ad52 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DataAccessControlServiceStubSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DataAccessControlServiceStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataAccessControlServiceStubSettings
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DataTableServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DataTableServiceStub.java
index 425bd2643a6d..51be6a39c198 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DataTableServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DataTableServiceStub.java
@@ -47,6 +47,7 @@
 import com.google.cloud.chronicle.v1.UpdateDataTableRowRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataTableServiceStub implements BackgroundResource {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DataTableServiceStubSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DataTableServiceStubSettings.java
index d1c7869682b0..9b0a4b7d5d0a 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DataTableServiceStubSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/DataTableServiceStubSettings.java
@@ -79,6 +79,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -130,6 +131,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataTableServiceStubSettings extends StubSettings<DataTableServiceStubSettings> {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/EntityServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/EntityServiceStub.java
index 379b5361f1d1..0230ea975613 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/EntityServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/EntityServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.chronicle.v1.Watchlist;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EntityServiceStub implements BackgroundResource {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/EntityServiceStubSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/EntityServiceStubSettings.java
index f99d952e065e..97d95cba088f 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/EntityServiceStubSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/EntityServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EntityServiceStubSettings extends StubSettings<EntityServiceStubSettings> {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/FeaturedContentNativeDashboardServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/FeaturedContentNativeDashboardServiceStub.java
index d6ea2059939c..b6602226aa6b 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/FeaturedContentNativeDashboardServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/FeaturedContentNativeDashboardServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.cloud.chronicle.v1.ListFeaturedContentNativeDashboardsRequest;
 import com.google.cloud.chronicle.v1.ListFeaturedContentNativeDashboardsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FeaturedContentNativeDashboardServiceStub implements BackgroundResource {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/FeaturedContentNativeDashboardServiceStubSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/FeaturedContentNativeDashboardServiceStubSettings.java
index c620687281bc..9cdbad72cc92 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/FeaturedContentNativeDashboardServiceStubSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/FeaturedContentNativeDashboardServiceStubSettings.java
@@ -59,6 +59,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FeaturedContentNativeDashboardServiceStubSettings
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcBigQueryExportServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcBigQueryExportServiceCallableFactory.java
index 7d054313fd95..c887dc692910 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcBigQueryExportServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcBigQueryExportServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBigQueryExportServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcBigQueryExportServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcBigQueryExportServiceStub.java
index c00be0e0f0cc..f7b707f38807 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcBigQueryExportServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcBigQueryExportServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBigQueryExportServiceStub extends BigQueryExportServiceStub {
   private static final MethodDescriptor<GetBigQueryExportRequest, BigQueryExport>
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDashboardChartServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDashboardChartServiceCallableFactory.java
index 0fad3d2e1d43..5a2fbe40e8d4 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDashboardChartServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDashboardChartServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDashboardChartServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDashboardChartServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDashboardChartServiceStub.java
index 5f8258a29171..2617039c6d0d 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDashboardChartServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDashboardChartServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDashboardChartServiceStub extends DashboardChartServiceStub {
   private static final MethodDescriptor<GetDashboardChartRequest, DashboardChart>
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDashboardQueryServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDashboardQueryServiceCallableFactory.java
index 33a1df38c4e4..f8e1bfaa9891 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDashboardQueryServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDashboardQueryServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDashboardQueryServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDashboardQueryServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDashboardQueryServiceStub.java
index 2c799d125ae3..139bffc730ee 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDashboardQueryServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDashboardQueryServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDashboardQueryServiceStub extends DashboardQueryServiceStub {
   private static final MethodDescriptor<GetDashboardQueryRequest, DashboardQuery>
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDataAccessControlServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDataAccessControlServiceCallableFactory.java
index 01c62674262b..2d04f61746a7 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDataAccessControlServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDataAccessControlServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataAccessControlServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDataAccessControlServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDataAccessControlServiceStub.java
index 07ce854b91aa..362ae87bbc00 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDataAccessControlServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDataAccessControlServiceStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataAccessControlServiceStub extends DataAccessControlServiceStub {
   private static final MethodDescriptor<CreateDataAccessLabelRequest, DataAccessLabel>
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDataTableServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDataTableServiceCallableFactory.java
index 4b204a82b13d..b44fb0966ab0 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDataTableServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDataTableServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataTableServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDataTableServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDataTableServiceStub.java
index 9443d55b3268..a987b0192ee2 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDataTableServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcDataTableServiceStub.java
@@ -57,6 +57,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataTableServiceStub extends DataTableServiceStub {
   private static final MethodDescriptor<CreateDataTableRequest, DataTable>
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcEntityServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcEntityServiceCallableFactory.java
index df8921bb80b6..47340d651e41 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcEntityServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcEntityServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEntityServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcEntityServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcEntityServiceStub.java
index cc84e47f386a..ac1bcad498a5 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcEntityServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcEntityServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEntityServiceStub extends EntityServiceStub {
   private static final MethodDescriptor<GetWatchlistRequest, Watchlist>
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcFeaturedContentNativeDashboardServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcFeaturedContentNativeDashboardServiceCallableFactory.java
index 38ef049b428d..5e23fe794ef3 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcFeaturedContentNativeDashboardServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcFeaturedContentNativeDashboardServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFeaturedContentNativeDashboardServiceCallableFactory
     implements GrpcStubCallableFactory {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcFeaturedContentNativeDashboardServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcFeaturedContentNativeDashboardServiceStub.java
index 72ab36d9a806..1ade4ec9f50a 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcFeaturedContentNativeDashboardServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcFeaturedContentNativeDashboardServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFeaturedContentNativeDashboardServiceStub
     extends FeaturedContentNativeDashboardServiceStub {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcInstanceServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcInstanceServiceCallableFactory.java
index 264e64b23ca0..eb1bdc2742bd 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcInstanceServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcInstanceServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcInstanceServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcInstanceServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcInstanceServiceStub.java
index e15f565f7838..9fec59794797 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcInstanceServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcInstanceServiceStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcInstanceServiceStub extends InstanceServiceStub {
   private static final MethodDescriptor<GetInstanceRequest, Instance> getInstanceMethodDescriptor =
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcNativeDashboardServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcNativeDashboardServiceCallableFactory.java
index b9820bdce63d..f6ee2fef42bc 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcNativeDashboardServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcNativeDashboardServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNativeDashboardServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcNativeDashboardServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcNativeDashboardServiceStub.java
index d89c44019c0a..21f98af66f1d 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcNativeDashboardServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcNativeDashboardServiceStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNativeDashboardServiceStub extends NativeDashboardServiceStub {
   private static final MethodDescriptor<CreateNativeDashboardRequest, NativeDashboard>
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcReferenceListServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcReferenceListServiceCallableFactory.java
index 883e0c3671a0..a9a60619e5a5 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcReferenceListServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcReferenceListServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcReferenceListServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcReferenceListServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcReferenceListServiceStub.java
index e74496e6dc55..d6b20ca29652 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcReferenceListServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcReferenceListServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcReferenceListServiceStub extends ReferenceListServiceStub {
   private static final MethodDescriptor<GetReferenceListRequest, ReferenceList>
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcRuleExecutionErrorServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcRuleExecutionErrorServiceCallableFactory.java
index db758d5fc746..7726f531c04c 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcRuleExecutionErrorServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcRuleExecutionErrorServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRuleExecutionErrorServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcRuleExecutionErrorServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcRuleExecutionErrorServiceStub.java
index ccb6c509834c..9a206474ae4e 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcRuleExecutionErrorServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcRuleExecutionErrorServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRuleExecutionErrorServiceStub extends RuleExecutionErrorServiceStub {
   private static final MethodDescriptor<
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcRuleServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcRuleServiceCallableFactory.java
index e76cc73ebe75..daccad2c7c2a 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcRuleServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcRuleServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRuleServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcRuleServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcRuleServiceStub.java
index eea3a005f9af..4b49debec18e 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcRuleServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/GrpcRuleServiceStub.java
@@ -59,6 +59,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRuleServiceStub extends RuleServiceStub {
   private static final MethodDescriptor<CreateRuleRequest, Rule> createRuleMethodDescriptor =
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonBigQueryExportServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonBigQueryExportServiceCallableFactory.java
index b2a80cc72904..9efe955eea26 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonBigQueryExportServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonBigQueryExportServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBigQueryExportServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonBigQueryExportServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonBigQueryExportServiceStub.java
index 2e18cfc86e28..d1b926ff5895 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonBigQueryExportServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonBigQueryExportServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBigQueryExportServiceStub extends BigQueryExportServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDashboardChartServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDashboardChartServiceCallableFactory.java
index bebea9235039..9a3a99106a5c 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDashboardChartServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDashboardChartServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDashboardChartServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDashboardChartServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDashboardChartServiceStub.java
index 547bd012f18e..f3156aa12693 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDashboardChartServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDashboardChartServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDashboardChartServiceStub extends DashboardChartServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDashboardQueryServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDashboardQueryServiceCallableFactory.java
index 1ab7f9032105..e1baf053493d 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDashboardQueryServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDashboardQueryServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDashboardQueryServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDashboardQueryServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDashboardQueryServiceStub.java
index d23ba6783d08..4501725f4db3 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDashboardQueryServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDashboardQueryServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDashboardQueryServiceStub extends DashboardQueryServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDataAccessControlServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDataAccessControlServiceCallableFactory.java
index 51635137a414..622788691bde 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDataAccessControlServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDataAccessControlServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataAccessControlServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDataAccessControlServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDataAccessControlServiceStub.java
index 48f3139710c1..354777a7f50f 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDataAccessControlServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDataAccessControlServiceStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataAccessControlServiceStub extends DataAccessControlServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDataTableServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDataTableServiceCallableFactory.java
index ebf683095e05..46664e107a74 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDataTableServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDataTableServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataTableServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDataTableServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDataTableServiceStub.java
index 9a901a27c25f..64cae06b824e 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDataTableServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonDataTableServiceStub.java
@@ -64,6 +64,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataTableServiceStub extends DataTableServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonEntityServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonEntityServiceCallableFactory.java
index 10d7e0cf9a52..bfeb422e44df 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonEntityServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonEntityServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEntityServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonEntityServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonEntityServiceStub.java
index 676e5485fad0..e3569b8e644a 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonEntityServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonEntityServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEntityServiceStub extends EntityServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonFeaturedContentNativeDashboardServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonFeaturedContentNativeDashboardServiceCallableFactory.java
index 81506574c472..4937bbd5a922 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonFeaturedContentNativeDashboardServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonFeaturedContentNativeDashboardServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFeaturedContentNativeDashboardServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonFeaturedContentNativeDashboardServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonFeaturedContentNativeDashboardServiceStub.java
index 2ebf4eb58b72..a6b73fa88559 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonFeaturedContentNativeDashboardServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonFeaturedContentNativeDashboardServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFeaturedContentNativeDashboardServiceStub
     extends FeaturedContentNativeDashboardServiceStub {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonInstanceServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonInstanceServiceCallableFactory.java
index 1422c249a2e6..cf13b1f3e0cb 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonInstanceServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonInstanceServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstanceServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonInstanceServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonInstanceServiceStub.java
index 698c56dd4296..2ec2d86a72a2 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonInstanceServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonInstanceServiceStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstanceServiceStub extends InstanceServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonNativeDashboardServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonNativeDashboardServiceCallableFactory.java
index 26d1b20d2d26..198666fbc3f3 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonNativeDashboardServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonNativeDashboardServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNativeDashboardServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonNativeDashboardServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonNativeDashboardServiceStub.java
index e001a98d09be..f81f81571430 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonNativeDashboardServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonNativeDashboardServiceStub.java
@@ -58,6 +58,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNativeDashboardServiceStub extends NativeDashboardServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonReferenceListServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonReferenceListServiceCallableFactory.java
index af1b93676ccd..7ba99477598c 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonReferenceListServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonReferenceListServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonReferenceListServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonReferenceListServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonReferenceListServiceStub.java
index 56b61ca1b1cf..0118f85d73e2 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonReferenceListServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonReferenceListServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonReferenceListServiceStub extends ReferenceListServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonRuleExecutionErrorServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonRuleExecutionErrorServiceCallableFactory.java
index 2a5112dfbd15..3966198321a0 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonRuleExecutionErrorServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonRuleExecutionErrorServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRuleExecutionErrorServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonRuleExecutionErrorServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonRuleExecutionErrorServiceStub.java
index 0af422521c42..6dcbbd876dca 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonRuleExecutionErrorServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonRuleExecutionErrorServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRuleExecutionErrorServiceStub extends RuleExecutionErrorServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonRuleServiceCallableFactory.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonRuleServiceCallableFactory.java
index 88c1c800aeeb..8517ab5466f1 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonRuleServiceCallableFactory.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonRuleServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRuleServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonRuleServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonRuleServiceStub.java
index 8aa697ae16ff..40aa9b27f063 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonRuleServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/HttpJsonRuleServiceStub.java
@@ -70,6 +70,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRuleServiceStub extends RuleServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/InstanceServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/InstanceServiceStub.java
index 7f355427fd20..6cfc380ec1b4 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/InstanceServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/InstanceServiceStub.java
@@ -21,6 +21,7 @@
 import com.google.cloud.chronicle.v1.GetInstanceRequest;
 import com.google.cloud.chronicle.v1.Instance;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InstanceServiceStub implements BackgroundResource {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/InstanceServiceStubSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/InstanceServiceStubSettings.java
index cf40f1cce66e..9d4a3b1903c3 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/InstanceServiceStubSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/InstanceServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InstanceServiceStubSettings extends StubSettings<InstanceServiceStubSettings> {
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/NativeDashboardServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/NativeDashboardServiceStub.java
index 97ba6fa5dbdf..22664de3cc4e 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/NativeDashboardServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/NativeDashboardServiceStub.java
@@ -41,6 +41,7 @@
 import com.google.cloud.chronicle.v1.UpdateNativeDashboardRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NativeDashboardServiceStub implements BackgroundResource {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/NativeDashboardServiceStubSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/NativeDashboardServiceStubSettings.java
index 95dcd247712d..2e89f5696216 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/NativeDashboardServiceStubSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/NativeDashboardServiceStubSettings.java
@@ -73,6 +73,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NativeDashboardServiceStubSettings
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/ReferenceListServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/ReferenceListServiceStub.java
index 4098ead0c319..2e0b2e527d8e 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/ReferenceListServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/ReferenceListServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.chronicle.v1.VerifyReferenceListRequest;
 import com.google.cloud.chronicle.v1.VerifyReferenceListResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ReferenceListServiceStub implements BackgroundResource {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/ReferenceListServiceStubSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/ReferenceListServiceStubSettings.java
index 3fb340d35c36..cf5b11ff9719 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/ReferenceListServiceStubSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/ReferenceListServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ReferenceListServiceStubSettings
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/RuleExecutionErrorServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/RuleExecutionErrorServiceStub.java
index 2902adc5dc0b..1dd524b85cb3 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/RuleExecutionErrorServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/RuleExecutionErrorServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.cloud.chronicle.v1.ListRuleExecutionErrorsRequest;
 import com.google.cloud.chronicle.v1.ListRuleExecutionErrorsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RuleExecutionErrorServiceStub implements BackgroundResource {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/RuleExecutionErrorServiceStubSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/RuleExecutionErrorServiceStubSettings.java
index 5a2edabfc46a..85fce3b23159 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/RuleExecutionErrorServiceStubSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/RuleExecutionErrorServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RuleExecutionErrorServiceStubSettings
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/RuleServiceStub.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/RuleServiceStub.java
index 9f16c84d7770..b9993189651f 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/RuleServiceStub.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/RuleServiceStub.java
@@ -50,6 +50,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RuleServiceStub implements BackgroundResource {
 
diff --git a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/RuleServiceStubSettings.java b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/RuleServiceStubSettings.java
index 882a026ab9a8..7f2478a2cedb 100644
--- a/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/RuleServiceStubSettings.java
+++ b/java-chronicle/google-cloud-chronicle/src/main/java/com/google/cloud/chronicle/v1/stub/RuleServiceStubSettings.java
@@ -84,6 +84,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -161,6 +162,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RuleServiceStubSettings extends StubSettings<RuleServiceStubSettings> {
diff --git a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/BigQueryExportName.java b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/BigQueryExportName.java
index 598e109b0e23..e9a5fbbe335c 100644
--- a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/BigQueryExportName.java
+++ b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/BigQueryExportName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BigQueryExportName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/ContentHubName.java b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/ContentHubName.java
index 185c66c129de..c02bd5708578 100644
--- a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/ContentHubName.java
+++ b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/ContentHubName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContentHubName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DashboardChartName.java b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DashboardChartName.java
index 0503d37dc508..d00b1a1b9b44 100644
--- a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DashboardChartName.java
+++ b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DashboardChartName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DashboardChartName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_CHART =
diff --git a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DashboardQueryName.java b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DashboardQueryName.java
index 4d5d5b45f7d1..40e5c7c07b34 100644
--- a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DashboardQueryName.java
+++ b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DashboardQueryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DashboardQueryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_QUERY =
diff --git a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataAccessLabelName.java b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataAccessLabelName.java
index 2ea006f5aa16..a303d1e9565c 100644
--- a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataAccessLabelName.java
+++ b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataAccessLabelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataAccessLabelName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_DATA_ACCESS_LABEL =
diff --git a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataAccessScopeName.java b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataAccessScopeName.java
index 077e10c31c67..e37a3d2d3805 100644
--- a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataAccessScopeName.java
+++ b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataAccessScopeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataAccessScopeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_DATA_ACCESS_SCOPE =
diff --git a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataTableName.java b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataTableName.java
index 4fb45b695e18..db8bd12104cb 100644
--- a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataTableName.java
+++ b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataTableName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataTableName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_DATA_TABLE =
diff --git a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataTableOperationErrorsName.java b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataTableOperationErrorsName.java
index ce2b57552d60..83a3f51fca9a 100644
--- a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataTableOperationErrorsName.java
+++ b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataTableOperationErrorsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataTableOperationErrorsName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_DATA_TABLE_OPERATION_ERRORS =
diff --git a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataTableRowName.java b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataTableRowName.java
index cd9bea842748..16c8bcfe1b88 100644
--- a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataTableRowName.java
+++ b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/DataTableRowName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataTableRowName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_DATA_TABLE_DATA_TABLE_ROW =
diff --git a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/FeaturedContentNativeDashboardName.java b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/FeaturedContentNativeDashboardName.java
index 21cbdcdebbe6..93d8d79abd2c 100644
--- a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/FeaturedContentNativeDashboardName.java
+++ b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/FeaturedContentNativeDashboardName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeaturedContentNativeDashboardName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_FEATURED_CONTENT_NATIVE_DASHBOARD =
diff --git a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/InstanceName.java b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/InstanceName.java
index 7dafba8df748..1c192e95226e 100644
--- a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/InstanceName.java
+++ b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/NativeDashboardName.java b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/NativeDashboardName.java
index d2f59947e2ea..1637721aa35a 100644
--- a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/NativeDashboardName.java
+++ b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/NativeDashboardName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NativeDashboardName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_DASHBOARD =
diff --git a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/ReferenceListName.java b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/ReferenceListName.java
index 11ce37750c54..609d7ba1f90b 100644
--- a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/ReferenceListName.java
+++ b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/ReferenceListName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReferenceListName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_REFERENCE_LIST =
diff --git a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/RetrohuntName.java b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/RetrohuntName.java
index 0c3af0e87a9b..c0e9814bd5b4 100644
--- a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/RetrohuntName.java
+++ b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/RetrohuntName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RetrohuntName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_RULE_RETROHUNT =
diff --git a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/RuleDeploymentName.java b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/RuleDeploymentName.java
index 560159ea7fd0..d04f640e8352 100644
--- a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/RuleDeploymentName.java
+++ b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/RuleDeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RuleDeploymentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_RULE =
diff --git a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/RuleExecutionErrorName.java b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/RuleExecutionErrorName.java
index f0c1336e521e..8cbe83ed8681 100644
--- a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/RuleExecutionErrorName.java
+++ b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/RuleExecutionErrorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RuleExecutionErrorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_RULE_EXECUTION_ERROR =
diff --git a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/RuleName.java b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/RuleName.java
index bd6e038ab3c9..675240f0e5c5 100644
--- a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/RuleName.java
+++ b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/RuleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RuleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_RULE =
diff --git a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/WatchlistName.java b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/WatchlistName.java
index ccdf3829781c..77a52c390d65 100644
--- a/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/WatchlistName.java
+++ b/java-chronicle/proto-google-cloud-chronicle-v1/src/main/java/com/google/cloud/chronicle/v1/WatchlistName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WatchlistName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_WATCHLIST =
diff --git a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/CloudApiRegistryClient.java b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/CloudApiRegistryClient.java
index 4f2fc054eb06..32bf3c724137 100644
--- a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/CloudApiRegistryClient.java
+++ b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/CloudApiRegistryClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -233,6 +234,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudApiRegistryClient implements BackgroundResource {
   private final CloudApiRegistrySettings settings;
diff --git a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/CloudApiRegistrySettings.java b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/CloudApiRegistrySettings.java
index 0bba1233bfec..7bf7d8630337 100644
--- a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/CloudApiRegistrySettings.java
+++ b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/CloudApiRegistrySettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudApiRegistrySettings extends ClientSettings<CloudApiRegistrySettings> {
 
diff --git a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/CloudApiRegistryStub.java b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/CloudApiRegistryStub.java
index 669568c7902f..ad71da9f324f 100644
--- a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/CloudApiRegistryStub.java
+++ b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/CloudApiRegistryStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CloudApiRegistryStub implements BackgroundResource {
 
diff --git a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/CloudApiRegistryStubSettings.java b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/CloudApiRegistryStubSettings.java
index 62b61c301862..847f8f3818e0 100644
--- a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/CloudApiRegistryStubSettings.java
+++ b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/CloudApiRegistryStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CloudApiRegistryStubSettings extends StubSettings<CloudApiRegistryStubSettings> {
diff --git a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/GrpcCloudApiRegistryCallableFactory.java b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/GrpcCloudApiRegistryCallableFactory.java
index 350ae6823d32..edd9cb188fd6 100644
--- a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/GrpcCloudApiRegistryCallableFactory.java
+++ b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/GrpcCloudApiRegistryCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudApiRegistryCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/GrpcCloudApiRegistryStub.java b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/GrpcCloudApiRegistryStub.java
index 533280c07b8b..7ca42ba1a687 100644
--- a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/GrpcCloudApiRegistryStub.java
+++ b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/GrpcCloudApiRegistryStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudApiRegistryStub extends CloudApiRegistryStub {
   private static final MethodDescriptor<GetMcpServerRequest, McpServer>
diff --git a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/HttpJsonCloudApiRegistryCallableFactory.java b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/HttpJsonCloudApiRegistryCallableFactory.java
index a4354cf47825..53839f0e5832 100644
--- a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/HttpJsonCloudApiRegistryCallableFactory.java
+++ b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/HttpJsonCloudApiRegistryCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudApiRegistryCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/HttpJsonCloudApiRegistryStub.java b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/HttpJsonCloudApiRegistryStub.java
index 368598eae22b..c2926cee4b66 100644
--- a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/HttpJsonCloudApiRegistryStub.java
+++ b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1/stub/HttpJsonCloudApiRegistryStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudApiRegistryStub extends CloudApiRegistryStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/CloudApiRegistryClient.java b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/CloudApiRegistryClient.java
index 310c63a3bcd9..e4a470a3acd0 100644
--- a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/CloudApiRegistryClient.java
+++ b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/CloudApiRegistryClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -234,6 +235,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudApiRegistryClient implements BackgroundResource {
diff --git a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/CloudApiRegistrySettings.java b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/CloudApiRegistrySettings.java
index 467e0f25dea0..cc236ae7eecd 100644
--- a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/CloudApiRegistrySettings.java
+++ b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/CloudApiRegistrySettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudApiRegistrySettings extends ClientSettings<CloudApiRegistrySettings> {
diff --git a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/CloudApiRegistryStub.java b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/CloudApiRegistryStub.java
index 3dcda0126d70..9d0f3e091033 100644
--- a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/CloudApiRegistryStub.java
+++ b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/CloudApiRegistryStub.java
@@ -36,6 +36,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CloudApiRegistryStub implements BackgroundResource {
diff --git a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/CloudApiRegistryStubSettings.java b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/CloudApiRegistryStubSettings.java
index 2c9fc8ca3075..7661feae8546 100644
--- a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/CloudApiRegistryStubSettings.java
+++ b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/CloudApiRegistryStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/GrpcCloudApiRegistryCallableFactory.java b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/GrpcCloudApiRegistryCallableFactory.java
index 9ea7bf932d19..29ae6ee1c399 100644
--- a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/GrpcCloudApiRegistryCallableFactory.java
+++ b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/GrpcCloudApiRegistryCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudApiRegistryCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/GrpcCloudApiRegistryStub.java b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/GrpcCloudApiRegistryStub.java
index edff1f97e1fe..01f9a5e311e3 100644
--- a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/GrpcCloudApiRegistryStub.java
+++ b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/GrpcCloudApiRegistryStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudApiRegistryStub extends CloudApiRegistryStub {
diff --git a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/HttpJsonCloudApiRegistryCallableFactory.java b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/HttpJsonCloudApiRegistryCallableFactory.java
index fe02adbcafa4..1c80537ad1da 100644
--- a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/HttpJsonCloudApiRegistryCallableFactory.java
+++ b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/HttpJsonCloudApiRegistryCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudApiRegistryCallableFactory
diff --git a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/HttpJsonCloudApiRegistryStub.java b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/HttpJsonCloudApiRegistryStub.java
index ed1dec349c26..e45f9258c934 100644
--- a/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/HttpJsonCloudApiRegistryStub.java
+++ b/java-cloudapiregistry/google-cloud-cloudapiregistry/src/main/java/com/google/cloud/apiregistry/v1beta/stub/HttpJsonCloudApiRegistryStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudApiRegistryStub extends CloudApiRegistryStub {
diff --git a/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1/src/main/java/com/google/cloud/apiregistry/v1/LocationName.java b/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1/src/main/java/com/google/cloud/apiregistry/v1/LocationName.java
index 998f022e7a33..03a16e036fa7 100644
--- a/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1/src/main/java/com/google/cloud/apiregistry/v1/LocationName.java
+++ b/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1/src/main/java/com/google/cloud/apiregistry/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1/src/main/java/com/google/cloud/apiregistry/v1/McpServerName.java b/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1/src/main/java/com/google/cloud/apiregistry/v1/McpServerName.java
index 66e98fe0474d..21bfd22d39ad 100644
--- a/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1/src/main/java/com/google/cloud/apiregistry/v1/McpServerName.java
+++ b/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1/src/main/java/com/google/cloud/apiregistry/v1/McpServerName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class McpServerName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_API_NAMESPACE_MCP_SERVER =
diff --git a/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1/src/main/java/com/google/cloud/apiregistry/v1/McpToolName.java b/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1/src/main/java/com/google/cloud/apiregistry/v1/McpToolName.java
index 204bfebbeb9f..0f38550f03d6 100644
--- a/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1/src/main/java/com/google/cloud/apiregistry/v1/McpToolName.java
+++ b/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1/src/main/java/com/google/cloud/apiregistry/v1/McpToolName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class McpToolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_API_NAMESPACE_MCP_SERVER_MCP_TOOL =
diff --git a/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1beta/src/main/java/com/google/cloud/apiregistry/v1beta/LocationName.java b/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1beta/src/main/java/com/google/cloud/apiregistry/v1beta/LocationName.java
index 733673705248..1d26a5bd017f 100644
--- a/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1beta/src/main/java/com/google/cloud/apiregistry/v1beta/LocationName.java
+++ b/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1beta/src/main/java/com/google/cloud/apiregistry/v1beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1beta/src/main/java/com/google/cloud/apiregistry/v1beta/McpServerName.java b/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1beta/src/main/java/com/google/cloud/apiregistry/v1beta/McpServerName.java
index 3ee09be6792a..0e8eafc928fe 100644
--- a/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1beta/src/main/java/com/google/cloud/apiregistry/v1beta/McpServerName.java
+++ b/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1beta/src/main/java/com/google/cloud/apiregistry/v1beta/McpServerName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class McpServerName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_API_NAMESPACE_MCP_SERVER =
diff --git a/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1beta/src/main/java/com/google/cloud/apiregistry/v1beta/McpToolName.java b/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1beta/src/main/java/com/google/cloud/apiregistry/v1beta/McpToolName.java
index abf61cee8a85..ca089be6586f 100644
--- a/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1beta/src/main/java/com/google/cloud/apiregistry/v1beta/McpToolName.java
+++ b/java-cloudapiregistry/proto-google-cloud-cloudapiregistry-v1beta/src/main/java/com/google/cloud/apiregistry/v1beta/McpToolName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class McpToolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_API_NAMESPACE_MCP_SERVER_MCP_TOOL =
diff --git a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/CloudBuildClient.java b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/CloudBuildClient.java
index d5e4a5c20a7e..937f97677ed9 100644
--- a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/CloudBuildClient.java
+++ b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/CloudBuildClient.java
@@ -77,6 +77,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -557,6 +558,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudBuildClient implements BackgroundResource {
   private final CloudBuildSettings settings;
diff --git a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/CloudBuildSettings.java b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/CloudBuildSettings.java
index db515b76e242..45eaefeea864 100644
--- a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/CloudBuildSettings.java
+++ b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/CloudBuildSettings.java
@@ -70,6 +70,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudBuildSettings extends ClientSettings<CloudBuildSettings> {
 
diff --git a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/CloudBuildStub.java b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/CloudBuildStub.java
index 11a856fd1d87..af5e6effc177 100644
--- a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/CloudBuildStub.java
+++ b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/CloudBuildStub.java
@@ -58,6 +58,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CloudBuildStub implements BackgroundResource {
 
diff --git a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/CloudBuildStubSettings.java b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/CloudBuildStubSettings.java
index 6d03f7455dad..ae47b5a4e81f 100644
--- a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/CloudBuildStubSettings.java
+++ b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/CloudBuildStubSettings.java
@@ -92,6 +92,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CloudBuildStubSettings extends StubSettings<CloudBuildStubSettings> {
diff --git a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/GrpcCloudBuildCallableFactory.java b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/GrpcCloudBuildCallableFactory.java
index 8d5884889ba1..8d62d7a3f67a 100644
--- a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/GrpcCloudBuildCallableFactory.java
+++ b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/GrpcCloudBuildCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudBuildCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/GrpcCloudBuildStub.java b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/GrpcCloudBuildStub.java
index cf5bd6a035b1..331c3427ee26 100644
--- a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/GrpcCloudBuildStub.java
+++ b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/GrpcCloudBuildStub.java
@@ -68,6 +68,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudBuildStub extends CloudBuildStub {
   private static final MethodDescriptor<CreateBuildRequest, Operation> createBuildMethodDescriptor =
diff --git a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/HttpJsonCloudBuildCallableFactory.java b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/HttpJsonCloudBuildCallableFactory.java
index f810ae4a53b9..5ab7d811d06e 100644
--- a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/HttpJsonCloudBuildCallableFactory.java
+++ b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/HttpJsonCloudBuildCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudBuildCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/HttpJsonCloudBuildStub.java b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/HttpJsonCloudBuildStub.java
index b9b1d975c3c5..7429f0d6d05d 100644
--- a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/HttpJsonCloudBuildStub.java
+++ b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v1/stub/HttpJsonCloudBuildStub.java
@@ -79,6 +79,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudBuildStub extends CloudBuildStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/RepositoryManagerClient.java b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/RepositoryManagerClient.java
index c66ae8028a1e..0ee5a9af3853 100644
--- a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/RepositoryManagerClient.java
+++ b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/RepositoryManagerClient.java
@@ -70,6 +70,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -469,6 +470,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RepositoryManagerClient implements BackgroundResource {
   private final RepositoryManagerSettings settings;
diff --git a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/RepositoryManagerSettings.java b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/RepositoryManagerSettings.java
index 9bbdeebdd354..c0c627e526ce 100644
--- a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/RepositoryManagerSettings.java
+++ b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/RepositoryManagerSettings.java
@@ -68,6 +68,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RepositoryManagerSettings extends ClientSettings<RepositoryManagerSettings> {
 
diff --git a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/GrpcRepositoryManagerCallableFactory.java b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/GrpcRepositoryManagerCallableFactory.java
index a90058ce7529..3965d123882c 100644
--- a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/GrpcRepositoryManagerCallableFactory.java
+++ b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/GrpcRepositoryManagerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRepositoryManagerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/GrpcRepositoryManagerStub.java b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/GrpcRepositoryManagerStub.java
index f55e58ed5dee..9fcde7340e64 100644
--- a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/GrpcRepositoryManagerStub.java
+++ b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/GrpcRepositoryManagerStub.java
@@ -65,6 +65,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRepositoryManagerStub extends RepositoryManagerStub {
   private static final MethodDescriptor<CreateConnectionRequest, Operation>
diff --git a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/HttpJsonRepositoryManagerCallableFactory.java b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/HttpJsonRepositoryManagerCallableFactory.java
index 23e3c0f94039..73d552c571c6 100644
--- a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/HttpJsonRepositoryManagerCallableFactory.java
+++ b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/HttpJsonRepositoryManagerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRepositoryManagerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/HttpJsonRepositoryManagerStub.java b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/HttpJsonRepositoryManagerStub.java
index 257e4a2003f7..a0e246b48e6a 100644
--- a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/HttpJsonRepositoryManagerStub.java
+++ b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/HttpJsonRepositoryManagerStub.java
@@ -76,6 +76,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRepositoryManagerStub extends RepositoryManagerStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/RepositoryManagerStub.java b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/RepositoryManagerStub.java
index 7d907e050f28..1ed8bf88358f 100644
--- a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/RepositoryManagerStub.java
+++ b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/RepositoryManagerStub.java
@@ -56,6 +56,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RepositoryManagerStub implements BackgroundResource {
 
diff --git a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/RepositoryManagerStubSettings.java b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/RepositoryManagerStubSettings.java
index 0208736b91ce..25a9f4f190cb 100644
--- a/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/RepositoryManagerStubSettings.java
+++ b/java-cloudbuild/google-cloud-build/src/main/java/com/google/cloud/devtools/cloudbuild/v2/stub/RepositoryManagerStubSettings.java
@@ -90,6 +90,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -168,6 +169,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RepositoryManagerStubSettings extends StubSettings<RepositoryManagerStubSettings> {
diff --git a/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/BuildName.java b/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/BuildName.java
index e91cd37dd408..3ec73e0c6c70 100644
--- a/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/BuildName.java
+++ b/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/BuildName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BuildName implements ResourceName {
   private static final PathTemplate PROJECT_BUILD =
diff --git a/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/BuildTriggerName.java b/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/BuildTriggerName.java
index 8331336a9bc5..f0516fcae78f 100644
--- a/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/BuildTriggerName.java
+++ b/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/BuildTriggerName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BuildTriggerName implements ResourceName {
   private static final PathTemplate PROJECT_TRIGGER =
diff --git a/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/DefaultServiceAccountName.java b/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/DefaultServiceAccountName.java
index d1eeaca0a1fe..733b723a29ed 100644
--- a/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/DefaultServiceAccountName.java
+++ b/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/DefaultServiceAccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DefaultServiceAccountName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/LocationName.java b/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/LocationName.java
index 41d06000c457..c8404f2c228c 100644
--- a/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/LocationName.java
+++ b/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/ProjectName.java b/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/ProjectName.java
index 22c01658f904..31ccf419abd4 100644
--- a/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/ProjectName.java
+++ b/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/WorkerPoolName.java b/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/WorkerPoolName.java
index 77a6dc91a89d..dee4541954a0 100644
--- a/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/WorkerPoolName.java
+++ b/java-cloudbuild/proto-google-cloud-build-v1/src/main/java/com/google/cloudbuild/v1/WorkerPoolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkerPoolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WORKER_POOL =
diff --git a/java-cloudbuild/proto-google-cloud-build-v2/src/main/java/com/google/cloudbuild/v2/ConnectionName.java b/java-cloudbuild/proto-google-cloud-build-v2/src/main/java/com/google/cloudbuild/v2/ConnectionName.java
index f51daefbd611..ca335eefb47a 100644
--- a/java-cloudbuild/proto-google-cloud-build-v2/src/main/java/com/google/cloudbuild/v2/ConnectionName.java
+++ b/java-cloudbuild/proto-google-cloud-build-v2/src/main/java/com/google/cloudbuild/v2/ConnectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConnectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONNECTION =
diff --git a/java-cloudbuild/proto-google-cloud-build-v2/src/main/java/com/google/cloudbuild/v2/LocationName.java b/java-cloudbuild/proto-google-cloud-build-v2/src/main/java/com/google/cloudbuild/v2/LocationName.java
index 158437ddff92..a81f38092cdf 100644
--- a/java-cloudbuild/proto-google-cloud-build-v2/src/main/java/com/google/cloudbuild/v2/LocationName.java
+++ b/java-cloudbuild/proto-google-cloud-build-v2/src/main/java/com/google/cloudbuild/v2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-cloudbuild/proto-google-cloud-build-v2/src/main/java/com/google/cloudbuild/v2/RepositoryName.java b/java-cloudbuild/proto-google-cloud-build-v2/src/main/java/com/google/cloudbuild/v2/RepositoryName.java
index d3ac4e3d2f3b..4c82c6efd267 100644
--- a/java-cloudbuild/proto-google-cloud-build-v2/src/main/java/com/google/cloudbuild/v2/RepositoryName.java
+++ b/java-cloudbuild/proto-google-cloud-build-v2/src/main/java/com/google/cloudbuild/v2/RepositoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RepositoryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONNECTION_REPOSITORY =
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/ConsumerProcurementServiceClient.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/ConsumerProcurementServiceClient.java
index 8dd25d80b705..2537f6aee7a7 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/ConsumerProcurementServiceClient.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/ConsumerProcurementServiceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -216,6 +217,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConsumerProcurementServiceClient implements BackgroundResource {
   private final ConsumerProcurementServiceSettings settings;
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/ConsumerProcurementServiceSettings.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/ConsumerProcurementServiceSettings.java
index 7fa3adb5b234..09e425334b00 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/ConsumerProcurementServiceSettings.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/ConsumerProcurementServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConsumerProcurementServiceSettings
     extends ClientSettings<ConsumerProcurementServiceSettings> {
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/LicenseManagementServiceClient.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/LicenseManagementServiceClient.java
index 9b1b0063ce57..4a058c3de8d8 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/LicenseManagementServiceClient.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/LicenseManagementServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -213,6 +214,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LicenseManagementServiceClient implements BackgroundResource {
   private final LicenseManagementServiceSettings settings;
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/LicenseManagementServiceSettings.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/LicenseManagementServiceSettings.java
index d2496f4a0c0e..4a36973c5c03 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/LicenseManagementServiceSettings.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/LicenseManagementServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LicenseManagementServiceSettings
     extends ClientSettings<LicenseManagementServiceSettings> {
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/ConsumerProcurementServiceStub.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/ConsumerProcurementServiceStub.java
index 2a6326ec1bdf..847cfa2b7715 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/ConsumerProcurementServiceStub.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/ConsumerProcurementServiceStub.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ConsumerProcurementServiceStub implements BackgroundResource {
 
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/ConsumerProcurementServiceStubSettings.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/ConsumerProcurementServiceStubSettings.java
index f9be1edb172c..3b460e90f5f1 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/ConsumerProcurementServiceStubSettings.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/ConsumerProcurementServiceStubSettings.java
@@ -68,6 +68,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ConsumerProcurementServiceStubSettings
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/GrpcConsumerProcurementServiceCallableFactory.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/GrpcConsumerProcurementServiceCallableFactory.java
index 251123b19062..77cd6401af6e 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/GrpcConsumerProcurementServiceCallableFactory.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/GrpcConsumerProcurementServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConsumerProcurementServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/GrpcConsumerProcurementServiceStub.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/GrpcConsumerProcurementServiceStub.java
index 8918dde0eb02..0a09c0f7d09b 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/GrpcConsumerProcurementServiceStub.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/GrpcConsumerProcurementServiceStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConsumerProcurementServiceStub extends ConsumerProcurementServiceStub {
   private static final MethodDescriptor<PlaceOrderRequest, Operation> placeOrderMethodDescriptor =
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/GrpcLicenseManagementServiceCallableFactory.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/GrpcLicenseManagementServiceCallableFactory.java
index 679f647c2c29..c664444df550 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/GrpcLicenseManagementServiceCallableFactory.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/GrpcLicenseManagementServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLicenseManagementServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/GrpcLicenseManagementServiceStub.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/GrpcLicenseManagementServiceStub.java
index 429ac93feecd..8ad6fb072f0d 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/GrpcLicenseManagementServiceStub.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/GrpcLicenseManagementServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLicenseManagementServiceStub extends LicenseManagementServiceStub {
   private static final MethodDescriptor<GetLicensePoolRequest, LicensePool>
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/HttpJsonConsumerProcurementServiceCallableFactory.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/HttpJsonConsumerProcurementServiceCallableFactory.java
index 087f610cfe3d..1eb1c47cf399 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/HttpJsonConsumerProcurementServiceCallableFactory.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/HttpJsonConsumerProcurementServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConsumerProcurementServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/HttpJsonConsumerProcurementServiceStub.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/HttpJsonConsumerProcurementServiceStub.java
index fa87345c1824..97bd025c810f 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/HttpJsonConsumerProcurementServiceStub.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/HttpJsonConsumerProcurementServiceStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConsumerProcurementServiceStub extends ConsumerProcurementServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/HttpJsonLicenseManagementServiceCallableFactory.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/HttpJsonLicenseManagementServiceCallableFactory.java
index 9ee223925d22..7c78565ff6cc 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/HttpJsonLicenseManagementServiceCallableFactory.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/HttpJsonLicenseManagementServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLicenseManagementServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/HttpJsonLicenseManagementServiceStub.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/HttpJsonLicenseManagementServiceStub.java
index 27f4b7d6fcf6..6a295570c1a7 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/HttpJsonLicenseManagementServiceStub.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/HttpJsonLicenseManagementServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLicenseManagementServiceStub extends LicenseManagementServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/LicenseManagementServiceStub.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/LicenseManagementServiceStub.java
index 256ea30a4b6b..a916516c5a01 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/LicenseManagementServiceStub.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/LicenseManagementServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.commerce.consumer.procurement.v1.UnassignResponse;
 import com.google.cloud.commerce.consumer.procurement.v1.UpdateLicensePoolRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LicenseManagementServiceStub implements BackgroundResource {
 
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/LicenseManagementServiceStubSettings.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/LicenseManagementServiceStubSettings.java
index eef0f480961f..a85fa90a1a30 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/LicenseManagementServiceStubSettings.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/stub/LicenseManagementServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LicenseManagementServiceStubSettings
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/ConsumerProcurementServiceClient.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/ConsumerProcurementServiceClient.java
index ce553819c9fd..3a97bd9d0b5d 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/ConsumerProcurementServiceClient.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/ConsumerProcurementServiceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -186,6 +187,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConsumerProcurementServiceClient implements BackgroundResource {
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/ConsumerProcurementServiceSettings.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/ConsumerProcurementServiceSettings.java
index ccb107aa6111..4cbd3fa467d6 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/ConsumerProcurementServiceSettings.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/ConsumerProcurementServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConsumerProcurementServiceSettings
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/ConsumerProcurementServiceStub.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/ConsumerProcurementServiceStub.java
index c1bc87df7c74..41bfad2c3ee3 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/ConsumerProcurementServiceStub.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/ConsumerProcurementServiceStub.java
@@ -31,6 +31,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ConsumerProcurementServiceStub implements BackgroundResource {
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/ConsumerProcurementServiceStubSettings.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/ConsumerProcurementServiceStubSettings.java
index ec3ace25e947..3d0e4d8e38e6 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/ConsumerProcurementServiceStubSettings.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/ConsumerProcurementServiceStubSettings.java
@@ -64,6 +64,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -143,6 +144,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/GrpcConsumerProcurementServiceCallableFactory.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/GrpcConsumerProcurementServiceCallableFactory.java
index 322d8221e0bd..4e0a00c2ada3 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/GrpcConsumerProcurementServiceCallableFactory.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/GrpcConsumerProcurementServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConsumerProcurementServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/GrpcConsumerProcurementServiceStub.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/GrpcConsumerProcurementServiceStub.java
index 96696305e6cb..0e896e821d47 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/GrpcConsumerProcurementServiceStub.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/GrpcConsumerProcurementServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConsumerProcurementServiceStub extends ConsumerProcurementServiceStub {
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/HttpJsonConsumerProcurementServiceCallableFactory.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/HttpJsonConsumerProcurementServiceCallableFactory.java
index d6db6c380a81..e11e55579ed5 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/HttpJsonConsumerProcurementServiceCallableFactory.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/HttpJsonConsumerProcurementServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConsumerProcurementServiceCallableFactory
diff --git a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/HttpJsonConsumerProcurementServiceStub.java b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/HttpJsonConsumerProcurementServiceStub.java
index 62e83a8eff65..c2bf1fba1128 100644
--- a/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/HttpJsonConsumerProcurementServiceStub.java
+++ b/java-cloudcommerceconsumerprocurement/google-cloud-cloudcommerceconsumerprocurement/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/stub/HttpJsonConsumerProcurementServiceStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConsumerProcurementServiceStub extends ConsumerProcurementServiceStub {
diff --git a/java-cloudcommerceconsumerprocurement/proto-google-cloud-cloudcommerceconsumerprocurement-v1/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/BillingAccountName.java b/java-cloudcommerceconsumerprocurement/proto-google-cloud-cloudcommerceconsumerprocurement-v1/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/BillingAccountName.java
index bafbc19f9b84..2a410176daa2 100644
--- a/java-cloudcommerceconsumerprocurement/proto-google-cloud-cloudcommerceconsumerprocurement-v1/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/BillingAccountName.java
+++ b/java-cloudcommerceconsumerprocurement/proto-google-cloud-cloudcommerceconsumerprocurement-v1/src/main/java/com/google/cloud/commerce/consumer/procurement/v1/BillingAccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BillingAccountName implements ResourceName {
   private static final PathTemplate BILLING_ACCOUNT =
diff --git a/java-cloudcommerceconsumerprocurement/proto-google-cloud-cloudcommerceconsumerprocurement-v1alpha1/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/BillingAccountName.java b/java-cloudcommerceconsumerprocurement/proto-google-cloud-cloudcommerceconsumerprocurement-v1alpha1/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/BillingAccountName.java
index afe82d6e62a2..d8e533280b44 100644
--- a/java-cloudcommerceconsumerprocurement/proto-google-cloud-cloudcommerceconsumerprocurement-v1alpha1/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/BillingAccountName.java
+++ b/java-cloudcommerceconsumerprocurement/proto-google-cloud-cloudcommerceconsumerprocurement-v1alpha1/src/main/java/com/google/cloud/commerce/consumer/procurement/v1alpha1/BillingAccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BillingAccountName implements ResourceName {
   private static final PathTemplate BILLING_ACCOUNT =
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CloudControlsPartnerCoreClient.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CloudControlsPartnerCoreClient.java
index 5aa8f71891fc..fb9cf126aa04 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CloudControlsPartnerCoreClient.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CloudControlsPartnerCoreClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -335,6 +336,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudControlsPartnerCoreClient implements BackgroundResource {
   private final CloudControlsPartnerCoreSettings settings;
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CloudControlsPartnerCoreSettings.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CloudControlsPartnerCoreSettings.java
index f60bfaaa3d99..eb6ecc6b9503 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CloudControlsPartnerCoreSettings.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CloudControlsPartnerCoreSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudControlsPartnerCoreSettings
     extends ClientSettings<CloudControlsPartnerCoreSettings> {
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CloudControlsPartnerMonitoringClient.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CloudControlsPartnerMonitoringClient.java
index bb3ee20ebd63..352ac816687a 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CloudControlsPartnerMonitoringClient.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CloudControlsPartnerMonitoringClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -162,6 +163,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudControlsPartnerMonitoringClient implements BackgroundResource {
   private final CloudControlsPartnerMonitoringSettings settings;
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CloudControlsPartnerMonitoringSettings.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CloudControlsPartnerMonitoringSettings.java
index 179561c899aa..d77742a63bbd 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CloudControlsPartnerMonitoringSettings.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CloudControlsPartnerMonitoringSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudControlsPartnerMonitoringSettings
     extends ClientSettings<CloudControlsPartnerMonitoringSettings> {
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/CloudControlsPartnerCoreStub.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/CloudControlsPartnerCoreStub.java
index 976c46e7fe83..733d2e369a2b 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/CloudControlsPartnerCoreStub.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/CloudControlsPartnerCoreStub.java
@@ -43,6 +43,7 @@
 import com.google.cloud.cloudcontrolspartner.v1.Workload;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CloudControlsPartnerCoreStub implements BackgroundResource {
 
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/CloudControlsPartnerCoreStubSettings.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/CloudControlsPartnerCoreStubSettings.java
index dea596d7ab2a..837810746eec 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/CloudControlsPartnerCoreStubSettings.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/CloudControlsPartnerCoreStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CloudControlsPartnerCoreStubSettings
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/CloudControlsPartnerMonitoringStub.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/CloudControlsPartnerMonitoringStub.java
index 5e05422ee51e..838c249c6e93 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/CloudControlsPartnerMonitoringStub.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/CloudControlsPartnerMonitoringStub.java
@@ -25,6 +25,7 @@
 import com.google.cloud.cloudcontrolspartner.v1.ListViolationsResponse;
 import com.google.cloud.cloudcontrolspartner.v1.Violation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CloudControlsPartnerMonitoringStub implements BackgroundResource {
 
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/CloudControlsPartnerMonitoringStubSettings.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/CloudControlsPartnerMonitoringStubSettings.java
index 8a9552ce41ec..496aa1b49173 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/CloudControlsPartnerMonitoringStubSettings.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/CloudControlsPartnerMonitoringStubSettings.java
@@ -57,6 +57,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CloudControlsPartnerMonitoringStubSettings
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/GrpcCloudControlsPartnerCoreCallableFactory.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/GrpcCloudControlsPartnerCoreCallableFactory.java
index 1a72b43a1834..0fcf4857234f 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/GrpcCloudControlsPartnerCoreCallableFactory.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/GrpcCloudControlsPartnerCoreCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudControlsPartnerCoreCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/GrpcCloudControlsPartnerCoreStub.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/GrpcCloudControlsPartnerCoreStub.java
index 54ffc2c19608..67cdbe23fd9a 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/GrpcCloudControlsPartnerCoreStub.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/GrpcCloudControlsPartnerCoreStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudControlsPartnerCoreStub extends CloudControlsPartnerCoreStub {
   private static final MethodDescriptor<GetWorkloadRequest, Workload> getWorkloadMethodDescriptor =
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/GrpcCloudControlsPartnerMonitoringCallableFactory.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/GrpcCloudControlsPartnerMonitoringCallableFactory.java
index f52f07005198..81d202143c0f 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/GrpcCloudControlsPartnerMonitoringCallableFactory.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/GrpcCloudControlsPartnerMonitoringCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudControlsPartnerMonitoringCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/GrpcCloudControlsPartnerMonitoringStub.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/GrpcCloudControlsPartnerMonitoringStub.java
index c2ad91a60cb2..01fe16b8de26 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/GrpcCloudControlsPartnerMonitoringStub.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/GrpcCloudControlsPartnerMonitoringStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudControlsPartnerMonitoringStub extends CloudControlsPartnerMonitoringStub {
   private static final MethodDescriptor<ListViolationsRequest, ListViolationsResponse>
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/HttpJsonCloudControlsPartnerCoreCallableFactory.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/HttpJsonCloudControlsPartnerCoreCallableFactory.java
index 80aa97c587e3..d190e82f03d1 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/HttpJsonCloudControlsPartnerCoreCallableFactory.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/HttpJsonCloudControlsPartnerCoreCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudControlsPartnerCoreCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/HttpJsonCloudControlsPartnerCoreStub.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/HttpJsonCloudControlsPartnerCoreStub.java
index 20f8163b17e7..c9fa26a5b65b 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/HttpJsonCloudControlsPartnerCoreStub.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/HttpJsonCloudControlsPartnerCoreStub.java
@@ -60,6 +60,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudControlsPartnerCoreStub extends CloudControlsPartnerCoreStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/HttpJsonCloudControlsPartnerMonitoringCallableFactory.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/HttpJsonCloudControlsPartnerMonitoringCallableFactory.java
index b4147f1926ee..f0c0dd92fab4 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/HttpJsonCloudControlsPartnerMonitoringCallableFactory.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/HttpJsonCloudControlsPartnerMonitoringCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudControlsPartnerMonitoringCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/HttpJsonCloudControlsPartnerMonitoringStub.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/HttpJsonCloudControlsPartnerMonitoringStub.java
index 5ede7f10564c..80ab1928e661 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/HttpJsonCloudControlsPartnerMonitoringStub.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1/stub/HttpJsonCloudControlsPartnerMonitoringStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudControlsPartnerMonitoringStub extends CloudControlsPartnerMonitoringStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CloudControlsPartnerCoreClient.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CloudControlsPartnerCoreClient.java
index 776bfbf39414..dca8ac671bec 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CloudControlsPartnerCoreClient.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CloudControlsPartnerCoreClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -336,6 +337,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudControlsPartnerCoreClient implements BackgroundResource {
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CloudControlsPartnerCoreSettings.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CloudControlsPartnerCoreSettings.java
index b79e84aedffb..d2fef6a0b856 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CloudControlsPartnerCoreSettings.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CloudControlsPartnerCoreSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudControlsPartnerCoreSettings
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CloudControlsPartnerMonitoringClient.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CloudControlsPartnerMonitoringClient.java
index 2af10ee2f115..d37ba6d8a785 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CloudControlsPartnerMonitoringClient.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CloudControlsPartnerMonitoringClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -163,6 +164,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudControlsPartnerMonitoringClient implements BackgroundResource {
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CloudControlsPartnerMonitoringSettings.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CloudControlsPartnerMonitoringSettings.java
index a2bd98b8bfe5..c6696d4584a1 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CloudControlsPartnerMonitoringSettings.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CloudControlsPartnerMonitoringSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudControlsPartnerMonitoringSettings
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/CloudControlsPartnerCoreStub.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/CloudControlsPartnerCoreStub.java
index f823c65b245a..d67eed12ff73 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/CloudControlsPartnerCoreStub.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/CloudControlsPartnerCoreStub.java
@@ -44,6 +44,7 @@
 import com.google.cloud.cloudcontrolspartner.v1beta.Workload;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CloudControlsPartnerCoreStub implements BackgroundResource {
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/CloudControlsPartnerCoreStubSettings.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/CloudControlsPartnerCoreStubSettings.java
index 4ae58d3124e7..15b665c1bfd4 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/CloudControlsPartnerCoreStubSettings.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/CloudControlsPartnerCoreStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/CloudControlsPartnerMonitoringStub.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/CloudControlsPartnerMonitoringStub.java
index 372a1751ead4..21b8dbe5259f 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/CloudControlsPartnerMonitoringStub.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/CloudControlsPartnerMonitoringStub.java
@@ -26,6 +26,7 @@
 import com.google.cloud.cloudcontrolspartner.v1beta.ListViolationsResponse;
 import com.google.cloud.cloudcontrolspartner.v1beta.Violation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CloudControlsPartnerMonitoringStub implements BackgroundResource {
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/CloudControlsPartnerMonitoringStubSettings.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/CloudControlsPartnerMonitoringStubSettings.java
index ef36e0cf153b..bb8407d74579 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/CloudControlsPartnerMonitoringStubSettings.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/CloudControlsPartnerMonitoringStubSettings.java
@@ -57,6 +57,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/GrpcCloudControlsPartnerCoreCallableFactory.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/GrpcCloudControlsPartnerCoreCallableFactory.java
index 9d5785b96f66..be32098adef4 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/GrpcCloudControlsPartnerCoreCallableFactory.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/GrpcCloudControlsPartnerCoreCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudControlsPartnerCoreCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/GrpcCloudControlsPartnerCoreStub.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/GrpcCloudControlsPartnerCoreStub.java
index 078fb6a356f9..accbd20bea5c 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/GrpcCloudControlsPartnerCoreStub.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/GrpcCloudControlsPartnerCoreStub.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudControlsPartnerCoreStub extends CloudControlsPartnerCoreStub {
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/GrpcCloudControlsPartnerMonitoringCallableFactory.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/GrpcCloudControlsPartnerMonitoringCallableFactory.java
index 3c0d96c76644..48ed77fb14e5 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/GrpcCloudControlsPartnerMonitoringCallableFactory.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/GrpcCloudControlsPartnerMonitoringCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudControlsPartnerMonitoringCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/GrpcCloudControlsPartnerMonitoringStub.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/GrpcCloudControlsPartnerMonitoringStub.java
index 71c68169a88e..17ed019c1958 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/GrpcCloudControlsPartnerMonitoringStub.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/GrpcCloudControlsPartnerMonitoringStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudControlsPartnerMonitoringStub extends CloudControlsPartnerMonitoringStub {
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/HttpJsonCloudControlsPartnerCoreCallableFactory.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/HttpJsonCloudControlsPartnerCoreCallableFactory.java
index ad2566bb8dc0..b7855a424920 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/HttpJsonCloudControlsPartnerCoreCallableFactory.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/HttpJsonCloudControlsPartnerCoreCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudControlsPartnerCoreCallableFactory
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/HttpJsonCloudControlsPartnerCoreStub.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/HttpJsonCloudControlsPartnerCoreStub.java
index 96f0ccd9285e..32afe289745a 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/HttpJsonCloudControlsPartnerCoreStub.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/HttpJsonCloudControlsPartnerCoreStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudControlsPartnerCoreStub extends CloudControlsPartnerCoreStub {
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/HttpJsonCloudControlsPartnerMonitoringCallableFactory.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/HttpJsonCloudControlsPartnerMonitoringCallableFactory.java
index 5c11f596bf7b..a23a439f1592 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/HttpJsonCloudControlsPartnerMonitoringCallableFactory.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/HttpJsonCloudControlsPartnerMonitoringCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudControlsPartnerMonitoringCallableFactory
diff --git a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/HttpJsonCloudControlsPartnerMonitoringStub.java b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/HttpJsonCloudControlsPartnerMonitoringStub.java
index bc010c10a86c..16ee8750875b 100644
--- a/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/HttpJsonCloudControlsPartnerMonitoringStub.java
+++ b/java-cloudcontrolspartner/google-cloud-cloudcontrolspartner/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/stub/HttpJsonCloudControlsPartnerMonitoringStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudControlsPartnerMonitoringStub extends CloudControlsPartnerMonitoringStub {
diff --git a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/AccessApprovalRequestName.java b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/AccessApprovalRequestName.java
index 9c0d614cf418..5149ce360f47 100644
--- a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/AccessApprovalRequestName.java
+++ b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/AccessApprovalRequestName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccessApprovalRequestName implements ResourceName {
   private static final PathTemplate
diff --git a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CustomerName.java b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CustomerName.java
index 351132ed0f2e..55609212c4e4 100644
--- a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CustomerName.java
+++ b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/CustomerName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomerName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_CUSTOMER =
diff --git a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/EkmConnectionsName.java b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/EkmConnectionsName.java
index ed7c81ae3e63..dbeaeabf7d70 100644
--- a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/EkmConnectionsName.java
+++ b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/EkmConnectionsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EkmConnectionsName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_CUSTOMER_WORKLOAD =
diff --git a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/OrganizationLocationName.java b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/OrganizationLocationName.java
index 7d3067b3794c..2c94f9b49245 100644
--- a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/OrganizationLocationName.java
+++ b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/OrganizationLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationLocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/PartnerName.java b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/PartnerName.java
index 95fc1209719f..b3994f64d064 100644
--- a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/PartnerName.java
+++ b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/PartnerName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PartnerName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/PartnerPermissionsName.java b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/PartnerPermissionsName.java
index 5e013ad12083..c6b9f634f39b 100644
--- a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/PartnerPermissionsName.java
+++ b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/PartnerPermissionsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PartnerPermissionsName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_CUSTOMER_WORKLOAD =
diff --git a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/ViolationName.java b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/ViolationName.java
index 8edb71d7ed49..c47d4bdc7de7 100644
--- a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/ViolationName.java
+++ b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/ViolationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ViolationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_CUSTOMER_WORKLOAD_VIOLATION =
diff --git a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/WorkloadName.java b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/WorkloadName.java
index 576278e59891..4f879406313b 100644
--- a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/WorkloadName.java
+++ b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1/src/main/java/com/google/cloud/cloudcontrolspartner/v1/WorkloadName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkloadName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_CUSTOMER_WORKLOAD =
diff --git a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/AccessApprovalRequestName.java b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/AccessApprovalRequestName.java
index 7b6367a9ec89..303141dcf398 100644
--- a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/AccessApprovalRequestName.java
+++ b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/AccessApprovalRequestName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccessApprovalRequestName implements ResourceName {
   private static final PathTemplate
diff --git a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CustomerName.java b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CustomerName.java
index 5607f636adb0..01496994b4a7 100644
--- a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CustomerName.java
+++ b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/CustomerName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomerName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_CUSTOMER =
diff --git a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/EkmConnectionsName.java b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/EkmConnectionsName.java
index b80d573d2e9c..6b8f92cadbb7 100644
--- a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/EkmConnectionsName.java
+++ b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/EkmConnectionsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EkmConnectionsName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_CUSTOMER_WORKLOAD =
diff --git a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/OrganizationLocationName.java b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/OrganizationLocationName.java
index c86489d45a4a..34b18b81cbc2 100644
--- a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/OrganizationLocationName.java
+++ b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/OrganizationLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationLocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/PartnerName.java b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/PartnerName.java
index eddb542face1..5c6f29c8b9e9 100644
--- a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/PartnerName.java
+++ b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/PartnerName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PartnerName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/PartnerPermissionsName.java b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/PartnerPermissionsName.java
index eb4f60b80375..90bcb40dc698 100644
--- a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/PartnerPermissionsName.java
+++ b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/PartnerPermissionsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PartnerPermissionsName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_CUSTOMER_WORKLOAD =
diff --git a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/ViolationName.java b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/ViolationName.java
index d41b71f3a3df..3846f782ba94 100644
--- a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/ViolationName.java
+++ b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/ViolationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ViolationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_CUSTOMER_WORKLOAD_VIOLATION =
diff --git a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/WorkloadName.java b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/WorkloadName.java
index 7a9a4cc6c250..d821a1aaf286 100644
--- a/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/WorkloadName.java
+++ b/java-cloudcontrolspartner/proto-google-cloud-cloudcontrolspartner-v1beta/src/main/java/com/google/cloud/cloudcontrolspartner/v1beta/WorkloadName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkloadName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_CUSTOMER_WORKLOAD =
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/CloudQuotasClient.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/CloudQuotasClient.java
index 53e7533902c3..0695c230ac57 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/CloudQuotasClient.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/CloudQuotasClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -240,6 +241,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudQuotasClient implements BackgroundResource {
   private final CloudQuotasSettings settings;
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/CloudQuotasSettings.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/CloudQuotasSettings.java
index ea6ceba46af2..a16dfca330ce 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/CloudQuotasSettings.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/CloudQuotasSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudQuotasSettings extends ClientSettings<CloudQuotasSettings> {
 
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/CloudQuotasStub.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/CloudQuotasStub.java
index 84870dfc853c..ffb65d7b9d61 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/CloudQuotasStub.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/CloudQuotasStub.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CloudQuotasStub implements BackgroundResource {
 
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/CloudQuotasStubSettings.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/CloudQuotasStubSettings.java
index 4f7a51b8c4b1..2d2534f5dcf2 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/CloudQuotasStubSettings.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/CloudQuotasStubSettings.java
@@ -64,6 +64,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CloudQuotasStubSettings extends StubSettings<CloudQuotasStubSettings> {
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/GrpcCloudQuotasCallableFactory.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/GrpcCloudQuotasCallableFactory.java
index ca1983225438..d5a2deb09d8e 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/GrpcCloudQuotasCallableFactory.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/GrpcCloudQuotasCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudQuotasCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/GrpcCloudQuotasStub.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/GrpcCloudQuotasStub.java
index 758a3bf74410..bc54f864b1b8 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/GrpcCloudQuotasStub.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/GrpcCloudQuotasStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudQuotasStub extends CloudQuotasStub {
   private static final MethodDescriptor<ListQuotaInfosRequest, ListQuotaInfosResponse>
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/HttpJsonCloudQuotasCallableFactory.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/HttpJsonCloudQuotasCallableFactory.java
index 6010e6e8b507..63e8ba0be806 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/HttpJsonCloudQuotasCallableFactory.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/HttpJsonCloudQuotasCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudQuotasCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/HttpJsonCloudQuotasStub.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/HttpJsonCloudQuotasStub.java
index fb2a69239d6c..ad7d8c347b09 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/HttpJsonCloudQuotasStub.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1/stub/HttpJsonCloudQuotasStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudQuotasStub extends CloudQuotasStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/CloudQuotasClient.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/CloudQuotasClient.java
index 41685bbc4c50..9c9e236738d2 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/CloudQuotasClient.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/CloudQuotasClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -241,6 +242,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudQuotasClient implements BackgroundResource {
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/CloudQuotasSettings.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/CloudQuotasSettings.java
index 262c4448eb32..3dc4778d73c8 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/CloudQuotasSettings.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/CloudQuotasSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudQuotasSettings extends ClientSettings<CloudQuotasSettings> {
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/QuotaAdjusterSettingsManagerClient.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/QuotaAdjusterSettingsManagerClient.java
index 1c3b8221675f..888e489dbc15 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/QuotaAdjusterSettingsManagerClient.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/QuotaAdjusterSettingsManagerClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -158,6 +159,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class QuotaAdjusterSettingsManagerClient implements BackgroundResource {
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/QuotaAdjusterSettingsManagerSettings.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/QuotaAdjusterSettingsManagerSettings.java
index 43d31a83819f..33c596a65bf1 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/QuotaAdjusterSettingsManagerSettings.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/QuotaAdjusterSettingsManagerSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class QuotaAdjusterSettingsManagerSettings
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/CloudQuotasStub.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/CloudQuotasStub.java
index 029b80ccba76..925fc2169013 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/CloudQuotasStub.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/CloudQuotasStub.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CloudQuotasStub implements BackgroundResource {
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/CloudQuotasStubSettings.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/CloudQuotasStubSettings.java
index 8b0b47732d31..608e0d1e7425 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/CloudQuotasStubSettings.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/CloudQuotasStubSettings.java
@@ -64,6 +64,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/GrpcCloudQuotasCallableFactory.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/GrpcCloudQuotasCallableFactory.java
index eddac1bb7e37..1d8c6504a81a 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/GrpcCloudQuotasCallableFactory.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/GrpcCloudQuotasCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudQuotasCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/GrpcCloudQuotasStub.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/GrpcCloudQuotasStub.java
index bbc62e85237c..0e3b8b1443c4 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/GrpcCloudQuotasStub.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/GrpcCloudQuotasStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudQuotasStub extends CloudQuotasStub {
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/GrpcQuotaAdjusterSettingsManagerCallableFactory.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/GrpcQuotaAdjusterSettingsManagerCallableFactory.java
index 71cbb53c8b2c..4eafe6eaa040 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/GrpcQuotaAdjusterSettingsManagerCallableFactory.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/GrpcQuotaAdjusterSettingsManagerCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcQuotaAdjusterSettingsManagerCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/GrpcQuotaAdjusterSettingsManagerStub.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/GrpcQuotaAdjusterSettingsManagerStub.java
index f9f85850f6ef..31b2165deee0 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/GrpcQuotaAdjusterSettingsManagerStub.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/GrpcQuotaAdjusterSettingsManagerStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcQuotaAdjusterSettingsManagerStub extends QuotaAdjusterSettingsManagerStub {
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/HttpJsonCloudQuotasCallableFactory.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/HttpJsonCloudQuotasCallableFactory.java
index 809d706ae066..330014da9af2 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/HttpJsonCloudQuotasCallableFactory.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/HttpJsonCloudQuotasCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudQuotasCallableFactory
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/HttpJsonCloudQuotasStub.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/HttpJsonCloudQuotasStub.java
index cdfde626a85d..06360aa84a50 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/HttpJsonCloudQuotasStub.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/HttpJsonCloudQuotasStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudQuotasStub extends CloudQuotasStub {
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/HttpJsonQuotaAdjusterSettingsManagerCallableFactory.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/HttpJsonQuotaAdjusterSettingsManagerCallableFactory.java
index f1fad08b007e..b7de92587cc3 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/HttpJsonQuotaAdjusterSettingsManagerCallableFactory.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/HttpJsonQuotaAdjusterSettingsManagerCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonQuotaAdjusterSettingsManagerCallableFactory
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/HttpJsonQuotaAdjusterSettingsManagerStub.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/HttpJsonQuotaAdjusterSettingsManagerStub.java
index 0f3c2348c19d..3678fee21c9c 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/HttpJsonQuotaAdjusterSettingsManagerStub.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/HttpJsonQuotaAdjusterSettingsManagerStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonQuotaAdjusterSettingsManagerStub extends QuotaAdjusterSettingsManagerStub {
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/QuotaAdjusterSettingsManagerStub.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/QuotaAdjusterSettingsManagerStub.java
index 5561a51c71b2..4d3624ae83cd 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/QuotaAdjusterSettingsManagerStub.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/QuotaAdjusterSettingsManagerStub.java
@@ -23,6 +23,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class QuotaAdjusterSettingsManagerStub implements BackgroundResource {
diff --git a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/QuotaAdjusterSettingsManagerStubSettings.java b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/QuotaAdjusterSettingsManagerStubSettings.java
index 6e0bc31b2d3a..5541727f2b0c 100644
--- a/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/QuotaAdjusterSettingsManagerStubSettings.java
+++ b/java-cloudquotas/google-cloud-cloudquotas/src/main/java/com/google/api/cloudquotas/v1beta/stub/QuotaAdjusterSettingsManagerStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-cloudquotas/proto-google-cloud-cloudquotas-v1/src/main/java/com/google/api/cloudquotas/v1/LocationName.java b/java-cloudquotas/proto-google-cloud-cloudquotas-v1/src/main/java/com/google/api/cloudquotas/v1/LocationName.java
index edca66dc4ba5..7ccf073a9e1d 100644
--- a/java-cloudquotas/proto-google-cloud-cloudquotas-v1/src/main/java/com/google/api/cloudquotas/v1/LocationName.java
+++ b/java-cloudquotas/proto-google-cloud-cloudquotas-v1/src/main/java/com/google/api/cloudquotas/v1/LocationName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-cloudquotas/proto-google-cloud-cloudquotas-v1/src/main/java/com/google/api/cloudquotas/v1/QuotaInfoName.java b/java-cloudquotas/proto-google-cloud-cloudquotas-v1/src/main/java/com/google/api/cloudquotas/v1/QuotaInfoName.java
index 23867191416f..6e349d371dd5 100644
--- a/java-cloudquotas/proto-google-cloud-cloudquotas-v1/src/main/java/com/google/api/cloudquotas/v1/QuotaInfoName.java
+++ b/java-cloudquotas/proto-google-cloud-cloudquotas-v1/src/main/java/com/google/api/cloudquotas/v1/QuotaInfoName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QuotaInfoName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE_QUOTA_INFO =
diff --git a/java-cloudquotas/proto-google-cloud-cloudquotas-v1/src/main/java/com/google/api/cloudquotas/v1/QuotaPreferenceName.java b/java-cloudquotas/proto-google-cloud-cloudquotas-v1/src/main/java/com/google/api/cloudquotas/v1/QuotaPreferenceName.java
index 1460e34c38ba..657bb7be3ba5 100644
--- a/java-cloudquotas/proto-google-cloud-cloudquotas-v1/src/main/java/com/google/api/cloudquotas/v1/QuotaPreferenceName.java
+++ b/java-cloudquotas/proto-google-cloud-cloudquotas-v1/src/main/java/com/google/api/cloudquotas/v1/QuotaPreferenceName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QuotaPreferenceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_QUOTA_PREFERENCE =
diff --git a/java-cloudquotas/proto-google-cloud-cloudquotas-v1/src/main/java/com/google/api/cloudquotas/v1/ServiceName.java b/java-cloudquotas/proto-google-cloud-cloudquotas-v1/src/main/java/com/google/api/cloudquotas/v1/ServiceName.java
index eb9c9bd316e5..d745132266f3 100644
--- a/java-cloudquotas/proto-google-cloud-cloudquotas-v1/src/main/java/com/google/api/cloudquotas/v1/ServiceName.java
+++ b/java-cloudquotas/proto-google-cloud-cloudquotas-v1/src/main/java/com/google/api/cloudquotas/v1/ServiceName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE =
diff --git a/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/LocationName.java b/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/LocationName.java
index f5257f9092e5..26b0e6ee3350 100644
--- a/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/LocationName.java
+++ b/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/LocationName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/QuotaAdjusterSettingsName.java b/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/QuotaAdjusterSettingsName.java
index 5d77d71d272b..6fa963fc5504 100644
--- a/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/QuotaAdjusterSettingsName.java
+++ b/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/QuotaAdjusterSettingsName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QuotaAdjusterSettingsName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/QuotaInfoName.java b/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/QuotaInfoName.java
index 1584bcd28a07..2d41493a029c 100644
--- a/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/QuotaInfoName.java
+++ b/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/QuotaInfoName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QuotaInfoName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE_QUOTA_INFO =
diff --git a/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/QuotaPreferenceName.java b/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/QuotaPreferenceName.java
index b1cc5e5bc99b..7cf8767f09da 100644
--- a/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/QuotaPreferenceName.java
+++ b/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/QuotaPreferenceName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QuotaPreferenceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_QUOTA_PREFERENCE =
diff --git a/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/ServiceName.java b/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/ServiceName.java
index c47c383dc3d8..ba36732ffe2c 100644
--- a/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/ServiceName.java
+++ b/java-cloudquotas/proto-google-cloud-cloudquotas-v1beta/src/main/java/com/google/api/cloudquotas/v1beta/ServiceName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE =
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/AuditClient.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/AuditClient.java
index c4e47187b97b..a59fb64d0a36 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/AuditClient.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/AuditClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -237,6 +238,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AuditClient implements BackgroundResource {
   private final AuditSettings settings;
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/AuditSettings.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/AuditSettings.java
index eb968a45bd4d..1d2e2f58db84 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/AuditSettings.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/AuditSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AuditSettings extends ClientSettings<AuditSettings> {
 
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CmEnrollmentServiceClient.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CmEnrollmentServiceClient.java
index 2cbceb5b951c..5f949ab9c5f7 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CmEnrollmentServiceClient.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CmEnrollmentServiceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -195,6 +196,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CmEnrollmentServiceClient implements BackgroundResource {
   private final CmEnrollmentServiceSettings settings;
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CmEnrollmentServiceSettings.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CmEnrollmentServiceSettings.java
index 178d17fc5664..c91043736f39 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CmEnrollmentServiceSettings.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CmEnrollmentServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CmEnrollmentServiceSettings extends ClientSettings<CmEnrollmentServiceSettings> {
 
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/ConfigClient.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/ConfigClient.java
index 3a86093174c7..84b9a15218c9 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/ConfigClient.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/ConfigClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -356,6 +357,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConfigClient implements BackgroundResource {
   private final ConfigSettings settings;
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/ConfigSettings.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/ConfigSettings.java
index f51a4c9ebf89..04138c97be4d 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/ConfigSettings.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/ConfigSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConfigSettings extends ClientSettings<ConfigSettings> {
 
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/DeploymentClient.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/DeploymentClient.java
index dc8a66e1d429..d180cf89e97e 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/DeploymentClient.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/DeploymentClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -280,6 +281,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentClient implements BackgroundResource {
   private final DeploymentSettings settings;
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/DeploymentSettings.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/DeploymentSettings.java
index 2f6172e48ba3..a935585b3ed3 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/DeploymentSettings.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/DeploymentSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentSettings extends ClientSettings<DeploymentSettings> {
 
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/MonitoringClient.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/MonitoringClient.java
index c25e2c7492d3..68370674afc0 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/MonitoringClient.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/MonitoringClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -254,6 +255,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MonitoringClient implements BackgroundResource {
   private final MonitoringSettings settings;
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/MonitoringSettings.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/MonitoringSettings.java
index c8ad0a9d1380..eadf8f5c121e 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/MonitoringSettings.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/MonitoringSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MonitoringSettings extends ClientSettings<MonitoringSettings> {
 
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/AuditStub.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/AuditStub.java
index 887a333ab7f1..cf1a2489dc17 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/AuditStub.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/AuditStub.java
@@ -37,6 +37,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AuditStub implements BackgroundResource {
 
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/AuditStubSettings.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/AuditStubSettings.java
index f048e12ff4a5..f8f892d9f292 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/AuditStubSettings.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/AuditStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AuditStubSettings extends StubSettings<AuditStubSettings> {
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/CmEnrollmentServiceStub.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/CmEnrollmentServiceStub.java
index 75350333adbb..b5eb7be99541 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/CmEnrollmentServiceStub.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/CmEnrollmentServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CmEnrollmentServiceStub implements BackgroundResource {
 
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/CmEnrollmentServiceStubSettings.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/CmEnrollmentServiceStubSettings.java
index dce0463ab0ec..fda568b0a68f 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/CmEnrollmentServiceStubSettings.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/CmEnrollmentServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CmEnrollmentServiceStubSettings extends StubSettings<CmEnrollmentServiceStubSettings> {
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/ConfigStub.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/ConfigStub.java
index b2fbcd13d4dd..afc25a6545d5 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/ConfigStub.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/ConfigStub.java
@@ -42,6 +42,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ConfigStub implements BackgroundResource {
 
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/ConfigStubSettings.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/ConfigStubSettings.java
index 7637faa4fa64..209321bfc5ec 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/ConfigStubSettings.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/ConfigStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ConfigStubSettings extends StubSettings<ConfigStubSettings> {
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/DeploymentStub.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/DeploymentStub.java
index 9c329543d011..123840babd5c 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/DeploymentStub.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/DeploymentStub.java
@@ -42,6 +42,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DeploymentStub implements BackgroundResource {
 
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/DeploymentStubSettings.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/DeploymentStubSettings.java
index 7810e5c22bfe..dea90ef78f28 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/DeploymentStubSettings.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/DeploymentStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DeploymentStubSettings extends StubSettings<DeploymentStubSettings> {
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcAuditCallableFactory.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcAuditCallableFactory.java
index b3848d8dc44c..94cbb945c4d5 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcAuditCallableFactory.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcAuditCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAuditCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcAuditStub.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcAuditStub.java
index 25bdb141f441..85bedad810f4 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcAuditStub.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcAuditStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAuditStub extends AuditStub {
   private static final MethodDescriptor<
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcCmEnrollmentServiceCallableFactory.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcCmEnrollmentServiceCallableFactory.java
index d3c1c9057f33..844890709f9e 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcCmEnrollmentServiceCallableFactory.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcCmEnrollmentServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCmEnrollmentServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcCmEnrollmentServiceStub.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcCmEnrollmentServiceStub.java
index 2a05b52748a9..0ddeaea42e7a 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcCmEnrollmentServiceStub.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcCmEnrollmentServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCmEnrollmentServiceStub extends CmEnrollmentServiceStub {
   private static final MethodDescriptor<UpdateCmEnrollmentRequest, CmEnrollment>
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcConfigCallableFactory.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcConfigCallableFactory.java
index 4fcfb4887586..99e0812dbd25 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcConfigCallableFactory.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcConfigCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConfigCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcConfigStub.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcConfigStub.java
index b2bf3cfc9857..583a4785b1e7 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcConfigStub.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcConfigStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConfigStub extends ConfigStub {
   private static final MethodDescriptor<ListFrameworksRequest, ListFrameworksResponse>
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcDeploymentCallableFactory.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcDeploymentCallableFactory.java
index 42f8792f61c9..bd37b6078c25 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcDeploymentCallableFactory.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcDeploymentCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDeploymentCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcDeploymentStub.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcDeploymentStub.java
index 160cc1a65a65..6698fe24ea40 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcDeploymentStub.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcDeploymentStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDeploymentStub extends DeploymentStub {
   private static final MethodDescriptor<CreateFrameworkDeploymentRequest, Operation>
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcMonitoringCallableFactory.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcMonitoringCallableFactory.java
index 9e229a8b37dd..d8e3e87dbc7d 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcMonitoringCallableFactory.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcMonitoringCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMonitoringCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcMonitoringStub.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcMonitoringStub.java
index 981fe11d2108..36dce6493bc3 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcMonitoringStub.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/GrpcMonitoringStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMonitoringStub extends MonitoringStub {
   private static final MethodDescriptor<
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonAuditCallableFactory.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonAuditCallableFactory.java
index bc716d34503e..a7ddf1c1ae9c 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonAuditCallableFactory.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonAuditCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAuditCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonAuditStub.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonAuditStub.java
index 04064efed5a0..571dd9e233cb 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonAuditStub.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonAuditStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAuditStub extends AuditStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonCmEnrollmentServiceCallableFactory.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonCmEnrollmentServiceCallableFactory.java
index 76397e5db734..ec620ac964c2 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonCmEnrollmentServiceCallableFactory.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonCmEnrollmentServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCmEnrollmentServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonCmEnrollmentServiceStub.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonCmEnrollmentServiceStub.java
index b7d887434fe3..24ecc2c0d8c8 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonCmEnrollmentServiceStub.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonCmEnrollmentServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCmEnrollmentServiceStub extends CmEnrollmentServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonConfigCallableFactory.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonConfigCallableFactory.java
index bdcfc2b2e1eb..49c56bc679aa 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonConfigCallableFactory.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonConfigCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConfigCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonConfigStub.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonConfigStub.java
index fa5a7795cd2e..68146e40c784 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonConfigStub.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonConfigStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConfigStub extends ConfigStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonDeploymentCallableFactory.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonDeploymentCallableFactory.java
index 1f4b8a73bb4e..e1cd37ef3606 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonDeploymentCallableFactory.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonDeploymentCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeploymentCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonDeploymentStub.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonDeploymentStub.java
index 2f2babd20485..cc45270fa2ad 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonDeploymentStub.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonDeploymentStub.java
@@ -62,6 +62,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeploymentStub extends DeploymentStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonMonitoringCallableFactory.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonMonitoringCallableFactory.java
index d6f73d55aa6f..b11ce9ddbb7b 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonMonitoringCallableFactory.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonMonitoringCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMonitoringCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonMonitoringStub.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonMonitoringStub.java
index 64cf74f2ec61..f8f47549d024 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonMonitoringStub.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/HttpJsonMonitoringStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMonitoringStub extends MonitoringStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/MonitoringStub.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/MonitoringStub.java
index cdf398bc6c26..cf4ee9039970 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/MonitoringStub.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/MonitoringStub.java
@@ -38,6 +38,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MonitoringStub implements BackgroundResource {
 
diff --git a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/MonitoringStubSettings.java b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/MonitoringStubSettings.java
index 8f644c71ff06..92da2c7d5005 100644
--- a/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/MonitoringStubSettings.java
+++ b/java-cloudsecuritycompliance/google-cloud-cloudsecuritycompliance/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/stub/MonitoringStubSettings.java
@@ -73,6 +73,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MonitoringStubSettings extends StubSettings<MonitoringStubSettings> {
diff --git a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CloudControlDeploymentName.java b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CloudControlDeploymentName.java
index ed7d6e3c6678..94e1aca26daf 100644
--- a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CloudControlDeploymentName.java
+++ b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CloudControlDeploymentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudControlDeploymentName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_CLOUD_CONTROL_DEPLOYMENT =
diff --git a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CloudControlName.java b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CloudControlName.java
index 091b257377c7..db4c5d07cdb1 100644
--- a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CloudControlName.java
+++ b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CloudControlName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudControlName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_CLOUD_CONTROL =
diff --git a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CmEnrollmentName.java b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CmEnrollmentName.java
index b0a854b949ac..ca55632949be 100644
--- a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CmEnrollmentName.java
+++ b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/CmEnrollmentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CmEnrollmentName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/ControlComplianceSummaryName.java b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/ControlComplianceSummaryName.java
index 154ed509c20d..46e092df23b8 100644
--- a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/ControlComplianceSummaryName.java
+++ b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/ControlComplianceSummaryName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ControlComplianceSummaryName implements ResourceName {
   private static final PathTemplate
diff --git a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FindingSummaryName.java b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FindingSummaryName.java
index 633424955682..88a4ea67fd0e 100644
--- a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FindingSummaryName.java
+++ b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FindingSummaryName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FindingSummaryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FINDING_SUMMARY =
diff --git a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FolderLocationName.java b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FolderLocationName.java
index acc0cdbb0588..9db808622022 100644
--- a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FolderLocationName.java
+++ b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FolderLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderLocationName implements ResourceName {
   private static final PathTemplate FOLDER_LOCATION =
diff --git a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkAuditName.java b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkAuditName.java
index 7030b9666ef3..95354882c713 100644
--- a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkAuditName.java
+++ b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkAuditName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FrameworkAuditName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FRAMEWORK_AUDIT =
diff --git a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkComplianceReportName.java b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkComplianceReportName.java
index 48628f8187c8..84b0df0d9a2c 100644
--- a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkComplianceReportName.java
+++ b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkComplianceReportName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FrameworkComplianceReportName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FRAMEWORK_COMPLIANCE_REPORT =
diff --git a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkComplianceSummaryName.java b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkComplianceSummaryName.java
index 859c89d39174..bb45715fc425 100644
--- a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkComplianceSummaryName.java
+++ b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkComplianceSummaryName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FrameworkComplianceSummaryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FRAMEWORK_COMPLIANCE_SUMMARY =
diff --git a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkDeploymentName.java b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkDeploymentName.java
index de3db346973b..6f2feb898a5a 100644
--- a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkDeploymentName.java
+++ b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkDeploymentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FrameworkDeploymentName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_FRAMEWORK_DEPLOYMENT =
diff --git a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkName.java b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkName.java
index e29c07ee888c..be8c7f27f3bc 100644
--- a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkName.java
+++ b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/FrameworkName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FrameworkName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_FRAMEWORK =
diff --git a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/LocationName.java b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/LocationName.java
index 444f72c65aed..14ce5e42d632 100644
--- a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/LocationName.java
+++ b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/OrganizationLocationName.java b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/OrganizationLocationName.java
index 2a9b20a74a8a..7ade94fc7c29 100644
--- a/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/OrganizationLocationName.java
+++ b/java-cloudsecuritycompliance/proto-google-cloud-cloudsecuritycompliance-v1/src/main/java/com/google/cloud/cloudsecuritycompliance/v1/OrganizationLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationLocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CaseAttachmentServiceClient.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CaseAttachmentServiceClient.java
index b575e77e57f6..85136d847af3 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CaseAttachmentServiceClient.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CaseAttachmentServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -168,6 +169,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CaseAttachmentServiceClient implements BackgroundResource {
   private final CaseAttachmentServiceSettings settings;
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CaseAttachmentServiceSettings.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CaseAttachmentServiceSettings.java
index 8c9012dfd113..3a1dd0919d39 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CaseAttachmentServiceSettings.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CaseAttachmentServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CaseAttachmentServiceSettings extends ClientSettings<CaseAttachmentServiceSettings> {
 
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CaseServiceClient.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CaseServiceClient.java
index c471335b1a91..351968e7a8f5 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CaseServiceClient.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CaseServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -257,6 +258,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CaseServiceClient implements BackgroundResource {
   private final CaseServiceSettings settings;
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CaseServiceSettings.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CaseServiceSettings.java
index 7a3ec5affc14..2aadaf883b8d 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CaseServiceSettings.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CaseServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CaseServiceSettings extends ClientSettings<CaseServiceSettings> {
 
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CommentServiceClient.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CommentServiceClient.java
index b89e6aa10804..930b845e83a6 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CommentServiceClient.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CommentServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -183,6 +184,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CommentServiceClient implements BackgroundResource {
   private final CommentServiceSettings settings;
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CommentServiceSettings.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CommentServiceSettings.java
index 60f62c3bbd52..d7e7ac37cc7e 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CommentServiceSettings.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/CommentServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CommentServiceSettings extends ClientSettings<CommentServiceSettings> {
 
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CaseAttachmentServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CaseAttachmentServiceStub.java
index 11b466e52eab..cb122163c024 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CaseAttachmentServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CaseAttachmentServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.cloud.support.v2.ListAttachmentsRequest;
 import com.google.cloud.support.v2.ListAttachmentsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CaseAttachmentServiceStub implements BackgroundResource {
 
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CaseAttachmentServiceStubSettings.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CaseAttachmentServiceStubSettings.java
index 72f0daaf8234..8280c237370a 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CaseAttachmentServiceStubSettings.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CaseAttachmentServiceStubSettings.java
@@ -57,6 +57,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CaseAttachmentServiceStubSettings
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CaseServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CaseServiceStub.java
index 37cd6dccc520..2fa85adac514 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CaseServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CaseServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.support.v2.SearchCasesResponse;
 import com.google.cloud.support.v2.UpdateCaseRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CaseServiceStub implements BackgroundResource {
 
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CaseServiceStubSettings.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CaseServiceStubSettings.java
index 128e1dcdf5b0..8f80067a1913 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CaseServiceStubSettings.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CaseServiceStubSettings.java
@@ -68,6 +68,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CaseServiceStubSettings extends StubSettings<CaseServiceStubSettings> {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CommentServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CommentServiceStub.java
index 5eff86e46704..034e73ed332c 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CommentServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CommentServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.cloud.support.v2.ListCommentsRequest;
 import com.google.cloud.support.v2.ListCommentsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CommentServiceStub implements BackgroundResource {
 
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CommentServiceStubSettings.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CommentServiceStubSettings.java
index 3cbace9aa10d..6a88c471979e 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CommentServiceStubSettings.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/CommentServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CommentServiceStubSettings extends StubSettings<CommentServiceStubSettings> {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCaseAttachmentServiceCallableFactory.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCaseAttachmentServiceCallableFactory.java
index c13b41fc1f8a..c348a2bdb248 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCaseAttachmentServiceCallableFactory.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCaseAttachmentServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCaseAttachmentServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCaseAttachmentServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCaseAttachmentServiceStub.java
index c6f0f79f3c97..d505759c8862 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCaseAttachmentServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCaseAttachmentServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCaseAttachmentServiceStub extends CaseAttachmentServiceStub {
   private static final MethodDescriptor<ListAttachmentsRequest, ListAttachmentsResponse>
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCaseServiceCallableFactory.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCaseServiceCallableFactory.java
index 9cfdafea6fef..a15b5468eddf 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCaseServiceCallableFactory.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCaseServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCaseServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCaseServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCaseServiceStub.java
index 9cf045456f0f..67287620f394 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCaseServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCaseServiceStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCaseServiceStub extends CaseServiceStub {
   private static final MethodDescriptor<GetCaseRequest, Case> getCaseMethodDescriptor =
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCommentServiceCallableFactory.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCommentServiceCallableFactory.java
index a78a7fd3aadd..34f9457daee0 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCommentServiceCallableFactory.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCommentServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCommentServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCommentServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCommentServiceStub.java
index 49cadcee84cd..fc190afd32ee 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCommentServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/GrpcCommentServiceStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCommentServiceStub extends CommentServiceStub {
   private static final MethodDescriptor<ListCommentsRequest, ListCommentsResponse>
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCaseAttachmentServiceCallableFactory.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCaseAttachmentServiceCallableFactory.java
index 5b45cc56b4d4..316dad8299a7 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCaseAttachmentServiceCallableFactory.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCaseAttachmentServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCaseAttachmentServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCaseAttachmentServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCaseAttachmentServiceStub.java
index 4e93f281c764..4c4539440ed1 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCaseAttachmentServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCaseAttachmentServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCaseAttachmentServiceStub extends CaseAttachmentServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCaseServiceCallableFactory.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCaseServiceCallableFactory.java
index 5cfd97b3c07d..9ae725b01bf8 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCaseServiceCallableFactory.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCaseServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCaseServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCaseServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCaseServiceStub.java
index 05541474ae42..365812da90c1 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCaseServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCaseServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCaseServiceStub extends CaseServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCommentServiceCallableFactory.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCommentServiceCallableFactory.java
index 2f8564e659b4..e5473ecf4351 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCommentServiceCallableFactory.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCommentServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCommentServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCommentServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCommentServiceStub.java
index 0a1203b94a23..07a94830e103 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCommentServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2/stub/HttpJsonCommentServiceStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCommentServiceStub extends CommentServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CaseAttachmentServiceClient.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CaseAttachmentServiceClient.java
index 93f16008beb4..ecd4f806aaba 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CaseAttachmentServiceClient.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CaseAttachmentServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -163,6 +164,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CaseAttachmentServiceClient implements BackgroundResource {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CaseAttachmentServiceSettings.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CaseAttachmentServiceSettings.java
index 4de20a084493..48955a741908 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CaseAttachmentServiceSettings.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CaseAttachmentServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CaseAttachmentServiceSettings extends ClientSettings<CaseAttachmentServiceSettings> {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CaseServiceClient.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CaseServiceClient.java
index 025b0288e10f..9039d3152ea5 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CaseServiceClient.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CaseServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -258,6 +259,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CaseServiceClient implements BackgroundResource {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CaseServiceSettings.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CaseServiceSettings.java
index 14def876ae74..0aca6a450c4e 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CaseServiceSettings.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CaseServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CaseServiceSettings extends ClientSettings<CaseServiceSettings> {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CommentServiceClient.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CommentServiceClient.java
index 06132d5cfc6a..26903cf1713a 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CommentServiceClient.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CommentServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -177,6 +178,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CommentServiceClient implements BackgroundResource {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CommentServiceSettings.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CommentServiceSettings.java
index 8fb8bb8e51da..1d902ee7a623 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CommentServiceSettings.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/CommentServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CommentServiceSettings extends ClientSettings<CommentServiceSettings> {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/FeedServiceClient.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/FeedServiceClient.java
index 1232de660f62..744dbeadeff9 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/FeedServiceClient.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/FeedServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -138,6 +139,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FeedServiceClient implements BackgroundResource {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/FeedServiceSettings.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/FeedServiceSettings.java
index aef816d7affb..9ba2ef262818 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/FeedServiceSettings.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/FeedServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FeedServiceSettings extends ClientSettings<FeedServiceSettings> {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CaseAttachmentServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CaseAttachmentServiceStub.java
index f726a9e31a70..43dab62d1d8c 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CaseAttachmentServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CaseAttachmentServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.cloud.support.v2beta.ListAttachmentsRequest;
 import com.google.cloud.support.v2beta.ListAttachmentsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CaseAttachmentServiceStub implements BackgroundResource {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CaseAttachmentServiceStubSettings.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CaseAttachmentServiceStubSettings.java
index 1f2b3bdbdb46..5b590f3c6430 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CaseAttachmentServiceStubSettings.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CaseAttachmentServiceStubSettings.java
@@ -57,6 +57,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CaseServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CaseServiceStub.java
index 34ceb27a6101..f6343c815295 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CaseServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CaseServiceStub.java
@@ -36,6 +36,7 @@
 import com.google.cloud.support.v2beta.SearchCasesResponse;
 import com.google.cloud.support.v2beta.UpdateCaseRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CaseServiceStub implements BackgroundResource {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CaseServiceStubSettings.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CaseServiceStubSettings.java
index df44de1a06f8..fdce9264db6a 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CaseServiceStubSettings.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CaseServiceStubSettings.java
@@ -68,6 +68,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CommentServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CommentServiceStub.java
index 49c56c19902f..7f7701f98e77 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CommentServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CommentServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.cloud.support.v2beta.ListCommentsRequest;
 import com.google.cloud.support.v2beta.ListCommentsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CommentServiceStub implements BackgroundResource {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CommentServiceStubSettings.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CommentServiceStubSettings.java
index 9ea441ae9793..a78cadb1a881 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CommentServiceStubSettings.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/CommentServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/FeedServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/FeedServiceStub.java
index 8ca0a64e405d..545d2df442c6 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/FeedServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/FeedServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.cloud.support.v2beta.ShowFeedRequest;
 import com.google.cloud.support.v2beta.ShowFeedResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class FeedServiceStub implements BackgroundResource {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/FeedServiceStubSettings.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/FeedServiceStubSettings.java
index dd793f26f5fa..fb328686aae4 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/FeedServiceStubSettings.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/FeedServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCaseAttachmentServiceCallableFactory.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCaseAttachmentServiceCallableFactory.java
index ab29b4c3fab7..2feab465cb36 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCaseAttachmentServiceCallableFactory.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCaseAttachmentServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCaseAttachmentServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCaseAttachmentServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCaseAttachmentServiceStub.java
index 0fecfdd82770..ad4587191982 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCaseAttachmentServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCaseAttachmentServiceStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCaseAttachmentServiceStub extends CaseAttachmentServiceStub {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCaseServiceCallableFactory.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCaseServiceCallableFactory.java
index a93ca004852f..558da618b1e9 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCaseServiceCallableFactory.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCaseServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCaseServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCaseServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCaseServiceStub.java
index 0114aa4ef103..7d97acda72d2 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCaseServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCaseServiceStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCaseServiceStub extends CaseServiceStub {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCommentServiceCallableFactory.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCommentServiceCallableFactory.java
index 58c749cf5e78..3154ef419dfe 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCommentServiceCallableFactory.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCommentServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCommentServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCommentServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCommentServiceStub.java
index 7947dddec326..ca9716471250 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCommentServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcCommentServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCommentServiceStub extends CommentServiceStub {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcFeedServiceCallableFactory.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcFeedServiceCallableFactory.java
index efea9641c4d7..a918c9c5bb6b 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcFeedServiceCallableFactory.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcFeedServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFeedServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcFeedServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcFeedServiceStub.java
index 302f434edeae..c25e126459d4 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcFeedServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/GrpcFeedServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFeedServiceStub extends FeedServiceStub {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCaseAttachmentServiceCallableFactory.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCaseAttachmentServiceCallableFactory.java
index 0df714ff47d8..f3ed3c980d68 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCaseAttachmentServiceCallableFactory.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCaseAttachmentServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCaseAttachmentServiceCallableFactory
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCaseAttachmentServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCaseAttachmentServiceStub.java
index 1a69e380e248..718277fd7ebe 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCaseAttachmentServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCaseAttachmentServiceStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCaseAttachmentServiceStub extends CaseAttachmentServiceStub {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCaseServiceCallableFactory.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCaseServiceCallableFactory.java
index 5b1afd6c6a04..ce28c0b5918d 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCaseServiceCallableFactory.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCaseServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCaseServiceCallableFactory
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCaseServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCaseServiceStub.java
index 9f802c69f9c3..12d66e06e9c3 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCaseServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCaseServiceStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCaseServiceStub extends CaseServiceStub {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCommentServiceCallableFactory.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCommentServiceCallableFactory.java
index 311571935dca..2d389974b554 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCommentServiceCallableFactory.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCommentServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCommentServiceCallableFactory
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCommentServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCommentServiceStub.java
index d46b31b499c5..7487cc9343cf 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCommentServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonCommentServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCommentServiceStub extends CommentServiceStub {
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonFeedServiceCallableFactory.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonFeedServiceCallableFactory.java
index b5751140f903..f608d7c492a7 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonFeedServiceCallableFactory.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonFeedServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonFeedServiceCallableFactory
diff --git a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonFeedServiceStub.java b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonFeedServiceStub.java
index 138036f17134..16dc4be23a6c 100644
--- a/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonFeedServiceStub.java
+++ b/java-cloudsupport/google-cloud-cloudsupport/src/main/java/com/google/cloud/support/v2beta/stub/HttpJsonFeedServiceStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonFeedServiceStub extends FeedServiceStub {
diff --git a/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/AttachmentName.java b/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/AttachmentName.java
index 17fc258531d3..56c20437390c 100644
--- a/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/AttachmentName.java
+++ b/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/AttachmentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AttachmentName implements ResourceName {
   private static final PathTemplate ORGANIZATION_CASE_ATTACHMENT_ID =
diff --git a/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/CaseName.java b/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/CaseName.java
index 793ca7c77748..c1e91bf8a566 100644
--- a/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/CaseName.java
+++ b/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/CaseName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CaseName implements ResourceName {
   private static final PathTemplate ORGANIZATION_CASE =
diff --git a/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/CommentName.java b/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/CommentName.java
index ed68ccfd634a..d6cdecf52ce8 100644
--- a/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/CommentName.java
+++ b/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/CommentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CommentName implements ResourceName {
   private static final PathTemplate ORGANIZATION_CASE_COMMENT =
diff --git a/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/OrganizationName.java b/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/OrganizationName.java
index d9d44425f3aa..ed50ad437434 100644
--- a/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/OrganizationName.java
+++ b/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/ProjectName.java b/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/ProjectName.java
index 7cee0f91c614..168179e51cad 100644
--- a/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/ProjectName.java
+++ b/java-cloudsupport/proto-google-cloud-cloudsupport-v2/src/main/java/com/google/cloud/support/v2/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/AttachmentName.java b/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/AttachmentName.java
index 65649a5aad50..9e980887128d 100644
--- a/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/AttachmentName.java
+++ b/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/AttachmentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AttachmentName implements ResourceName {
   private static final PathTemplate ORGANIZATION_CASE_ATTACHMENT_ID =
diff --git a/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/CaseName.java b/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/CaseName.java
index a4d88c92d4c7..8d6393069d3e 100644
--- a/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/CaseName.java
+++ b/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/CaseName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CaseName implements ResourceName {
   private static final PathTemplate ORGANIZATION_CASE =
diff --git a/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/CommentName.java b/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/CommentName.java
index 7d23df799b58..1bdff34b60f3 100644
--- a/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/CommentName.java
+++ b/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/CommentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CommentName implements ResourceName {
   private static final PathTemplate ORGANIZATION_CASE_COMMENT =
diff --git a/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/OrganizationName.java b/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/OrganizationName.java
index 18e6ce82d4c7..60276963fccb 100644
--- a/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/OrganizationName.java
+++ b/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/ProjectName.java b/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/ProjectName.java
index d26993ebf873..45f7e2e98b1c 100644
--- a/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/ProjectName.java
+++ b/java-cloudsupport/proto-google-cloud-cloudsupport-v2beta/src/main/java/com/google/cloud/support/v2beta/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AcceleratorTypesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AcceleratorTypesClient.java
index 1466086cd1c3..a6bdabca5516 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AcceleratorTypesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AcceleratorTypesClient.java
@@ -32,6 +32,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AcceleratorTypesClient implements BackgroundResource {
   private final AcceleratorTypesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AcceleratorTypesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AcceleratorTypesSettings.java
index 3bff32e68b77..18a7f3725016 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AcceleratorTypesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AcceleratorTypesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AcceleratorTypesSettings extends ClientSettings<AcceleratorTypesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AddressesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AddressesClient.java
index dd9da1b03510..13956a078fe3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AddressesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AddressesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -258,6 +259,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AddressesClient implements BackgroundResource {
   private final AddressesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AddressesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AddressesSettings.java
index 7ef562b80985..c1ca764ada52 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AddressesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AddressesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AddressesSettings extends ClientSettings<AddressesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AdviceClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AdviceClient.java
index f4f603bdcc58..fb5c5ab8bce2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AdviceClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AdviceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdviceClient implements BackgroundResource {
   private final AdviceSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AdviceSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AdviceSettings.java
index d205e02ed696..6fc816292052 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AdviceSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AdviceSettings.java
@@ -29,6 +29,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -79,6 +80,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdviceSettings extends ClientSettings<AdviceSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AutoscalersClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AutoscalersClient.java
index 589583dfe79f..887b89bb6528 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AutoscalersClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AutoscalersClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -258,6 +259,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutoscalersClient implements BackgroundResource {
   private final AutoscalersSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AutoscalersSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AutoscalersSettings.java
index e77709e1a1d8..59bfe4964b97 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AutoscalersSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/AutoscalersSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutoscalersSettings extends ClientSettings<AutoscalersSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/BackendBucketsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/BackendBucketsClient.java
index 729d5eba9538..79463da38b04 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/BackendBucketsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/BackendBucketsClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -369,6 +370,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackendBucketsClient implements BackgroundResource {
   private final BackendBucketsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/BackendBucketsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/BackendBucketsSettings.java
index 54b59a071c6e..47f1420bb268 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/BackendBucketsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/BackendBucketsSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackendBucketsSettings extends ClientSettings<BackendBucketsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/BackendServicesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/BackendServicesClient.java
index 4d7400bca933..9309235ed152 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/BackendServicesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/BackendServicesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -429,6 +430,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackendServicesClient implements BackgroundResource {
   private final BackendServicesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/BackendServicesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/BackendServicesSettings.java
index 90150a706aa7..695e6d94d2f6 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/BackendServicesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/BackendServicesSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackendServicesSettings extends ClientSettings<BackendServicesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/CrossSiteNetworksClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/CrossSiteNetworksClient.java
index d04bff26e35b..1502d24dc666 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/CrossSiteNetworksClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/CrossSiteNetworksClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -202,6 +203,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CrossSiteNetworksClient implements BackgroundResource {
   private final CrossSiteNetworksSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/CrossSiteNetworksSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/CrossSiteNetworksSettings.java
index eb0dec655418..9bb027204b20 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/CrossSiteNetworksSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/CrossSiteNetworksSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CrossSiteNetworksSettings extends ClientSettings<CrossSiteNetworksSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/DiskTypesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/DiskTypesClient.java
index 94a7933e0b72..2abe3e7ffabf 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/DiskTypesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/DiskTypesClient.java
@@ -32,6 +32,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -162,6 +163,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DiskTypesClient implements BackgroundResource {
   private final DiskTypesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/DiskTypesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/DiskTypesSettings.java
index 937366b5feae..a8de95bfa94a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/DiskTypesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/DiskTypesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DiskTypesSettings extends ClientSettings<DiskTypesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/DisksClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/DisksClient.java
index 75250c8efdd6..9581b493f930 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/DisksClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/DisksClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -483,6 +484,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DisksClient implements BackgroundResource {
   private final DisksSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/DisksSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/DisksSettings.java
index 96fc8d951ded..21a810dd63ae 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/DisksSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/DisksSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DisksSettings extends ClientSettings<DisksSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ExternalVpnGatewaysClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ExternalVpnGatewaysClient.java
index d1934f1d73d7..8881372e54e7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ExternalVpnGatewaysClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ExternalVpnGatewaysClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -220,6 +221,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExternalVpnGatewaysClient implements BackgroundResource {
   private final ExternalVpnGatewaysSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ExternalVpnGatewaysSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ExternalVpnGatewaysSettings.java
index 7af04cb14067..54bc971022a9 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ExternalVpnGatewaysSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ExternalVpnGatewaysSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExternalVpnGatewaysSettings extends ClientSettings<ExternalVpnGatewaysSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FirewallPoliciesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FirewallPoliciesClient.java
index 15bb13e27b5f..780514cf6c48 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FirewallPoliciesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FirewallPoliciesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -442,6 +443,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FirewallPoliciesClient implements BackgroundResource {
   private final FirewallPoliciesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FirewallPoliciesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FirewallPoliciesSettings.java
index 96ffa35b476e..07d5eccf4600 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FirewallPoliciesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FirewallPoliciesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FirewallPoliciesSettings extends ClientSettings<FirewallPoliciesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FirewallsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FirewallsClient.java
index a74128a168a2..642e24792611 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FirewallsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FirewallsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -236,6 +237,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FirewallsClient implements BackgroundResource {
   private final FirewallsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FirewallsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FirewallsSettings.java
index be4e8f35df49..f2640a00a11f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FirewallsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FirewallsSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FirewallsSettings extends ClientSettings<FirewallsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ForwardingRulesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ForwardingRulesClient.java
index 75df0779dd4f..8caa08a73f99 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ForwardingRulesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ForwardingRulesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -262,6 +263,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ForwardingRulesClient implements BackgroundResource {
   private final ForwardingRulesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ForwardingRulesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ForwardingRulesSettings.java
index 8e88654cb2c9..8bbe57148951 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ForwardingRulesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ForwardingRulesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ForwardingRulesSettings extends ClientSettings<ForwardingRulesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FutureReservationsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FutureReservationsClient.java
index 66e577a69b4a..0cacf39eff4e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FutureReservationsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FutureReservationsClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -243,6 +244,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FutureReservationsClient implements BackgroundResource {
   private final FutureReservationsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FutureReservationsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FutureReservationsSettings.java
index bdfd68e04b8a..0a68a57a128e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FutureReservationsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/FutureReservationsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FutureReservationsSettings extends ClientSettings<FutureReservationsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalAddressesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalAddressesClient.java
index 9e0caa4acfba..b5758fb22167 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalAddressesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalAddressesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -239,6 +240,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlobalAddressesClient implements BackgroundResource {
   private final GlobalAddressesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalAddressesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalAddressesSettings.java
index da6dcd79bb39..17d15bac64a7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalAddressesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalAddressesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlobalAddressesSettings extends ClientSettings<GlobalAddressesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalForwardingRulesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalForwardingRulesClient.java
index 3ef3b7bf8b29..dde16c1c4c6c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalForwardingRulesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalForwardingRulesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -241,6 +242,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlobalForwardingRulesClient implements BackgroundResource {
   private final GlobalForwardingRulesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalForwardingRulesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalForwardingRulesSettings.java
index 9a82405ae3e2..91692ad26915 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalForwardingRulesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalForwardingRulesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlobalForwardingRulesSettings extends ClientSettings<GlobalForwardingRulesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalNetworkEndpointGroupsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalNetworkEndpointGroupsClient.java
index 18f1277e3980..c4dd96920102 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalNetworkEndpointGroupsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalNetworkEndpointGroupsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -244,6 +245,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlobalNetworkEndpointGroupsClient implements BackgroundResource {
   private final GlobalNetworkEndpointGroupsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalNetworkEndpointGroupsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalNetworkEndpointGroupsSettings.java
index d98ec02038a2..e395428e0b80 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalNetworkEndpointGroupsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalNetworkEndpointGroupsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlobalNetworkEndpointGroupsSettings
     extends ClientSettings<GlobalNetworkEndpointGroupsSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalOperationsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalOperationsClient.java
index 1d06bd4ef213..54ee7bed6bda 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalOperationsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalOperationsClient.java
@@ -32,6 +32,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -202,6 +203,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlobalOperationsClient implements BackgroundResource {
   private final GlobalOperationsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalOperationsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalOperationsSettings.java
index cbc4d975fd30..57715daf0e79 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalOperationsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalOperationsSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlobalOperationsSettings extends ClientSettings<GlobalOperationsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalOrganizationOperationsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalOrganizationOperationsClient.java
index 466d3786d936..0534ae90a118 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalOrganizationOperationsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalOrganizationOperationsClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -162,6 +163,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlobalOrganizationOperationsClient implements BackgroundResource {
   private final GlobalOrganizationOperationsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalOrganizationOperationsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalOrganizationOperationsSettings.java
index c5570bb4c270..461a923977ff 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalOrganizationOperationsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalOrganizationOperationsSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlobalOrganizationOperationsSettings
     extends ClientSettings<GlobalOrganizationOperationsSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalPublicDelegatedPrefixesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalPublicDelegatedPrefixesClient.java
index d554cce4ce92..0bf885e1a35e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalPublicDelegatedPrefixesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalPublicDelegatedPrefixesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -204,6 +205,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlobalPublicDelegatedPrefixesClient implements BackgroundResource {
   private final GlobalPublicDelegatedPrefixesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalPublicDelegatedPrefixesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalPublicDelegatedPrefixesSettings.java
index b4a9e7790d7f..2036209de1d7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalPublicDelegatedPrefixesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalPublicDelegatedPrefixesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlobalPublicDelegatedPrefixesSettings
     extends ClientSettings<GlobalPublicDelegatedPrefixesSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalVmExtensionPoliciesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalVmExtensionPoliciesClient.java
index fef9efd5f020..f6c5efde1344 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalVmExtensionPoliciesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalVmExtensionPoliciesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -225,6 +226,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlobalVmExtensionPoliciesClient implements BackgroundResource {
   private final GlobalVmExtensionPoliciesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalVmExtensionPoliciesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalVmExtensionPoliciesSettings.java
index 4361a91e34b7..c10a82ebd929 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalVmExtensionPoliciesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/GlobalVmExtensionPoliciesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlobalVmExtensionPoliciesSettings
     extends ClientSettings<GlobalVmExtensionPoliciesSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/HealthChecksClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/HealthChecksClient.java
index c2c931e4c28d..92946313c5d2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/HealthChecksClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/HealthChecksClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -257,6 +258,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HealthChecksClient implements BackgroundResource {
   private final HealthChecksSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/HealthChecksSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/HealthChecksSettings.java
index 1fc1eac7cf7c..c6d1c7fd1189 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/HealthChecksSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/HealthChecksSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HealthChecksSettings extends ClientSettings<HealthChecksSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ImageFamilyViewsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ImageFamilyViewsClient.java
index 108ca0588ee0..7b148509e784 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ImageFamilyViewsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ImageFamilyViewsClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ImageFamilyViewsClient implements BackgroundResource {
   private final ImageFamilyViewsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ImageFamilyViewsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ImageFamilyViewsSettings.java
index fa83a1886f5f..d119cc537549 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ImageFamilyViewsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ImageFamilyViewsSettings.java
@@ -29,6 +29,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -80,6 +81,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ImageFamilyViewsSettings extends ClientSettings<ImageFamilyViewsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ImagesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ImagesClient.java
index b4a493c1782d..8e5fb13e36b2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ImagesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ImagesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -309,6 +310,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ImagesClient implements BackgroundResource {
   private final ImagesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ImagesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ImagesSettings.java
index 35fd143de5a4..45575f99011f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ImagesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ImagesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ImagesSettings extends ClientSettings<ImagesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupManagerResizeRequestsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupManagerResizeRequestsClient.java
index cecb14e4a633..b7e1de5ef2ce 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupManagerResizeRequestsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupManagerResizeRequestsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -207,6 +208,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceGroupManagerResizeRequestsClient implements BackgroundResource {
   private final InstanceGroupManagerResizeRequestsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupManagerResizeRequestsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupManagerResizeRequestsSettings.java
index ecdee59f534b..96dfb6273687 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupManagerResizeRequestsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupManagerResizeRequestsSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceGroupManagerResizeRequestsSettings
     extends ClientSettings<InstanceGroupManagerResizeRequestsSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupManagersClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupManagersClient.java
index e034cca05364..3fb9691fb7c0 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupManagersClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupManagersClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -594,6 +595,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceGroupManagersClient implements BackgroundResource {
   private final InstanceGroupManagersSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupManagersSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupManagersSettings.java
index cb72a1064db3..068478b4f1a3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupManagersSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupManagersSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceGroupManagersSettings extends ClientSettings<InstanceGroupManagersSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupsClient.java
index 9539def7e09c..b02924eb99a0 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupsClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -299,6 +300,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceGroupsClient implements BackgroundResource {
   private final InstanceGroupsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupsSettings.java
index b5817f616049..0a6868ebf0a4 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceGroupsSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceGroupsSettings extends ClientSettings<InstanceGroupsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceSettingsServiceClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceSettingsServiceClient.java
index d8bc8bb2e949..5a7afbbd8ca9 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceSettingsServiceClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceSettingsServiceClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -138,6 +139,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceSettingsServiceClient implements BackgroundResource {
   private final InstanceSettingsServiceSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceSettingsServiceSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceSettingsServiceSettings.java
index 3dd93f25320a..2f0a7eb79b8e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceSettingsServiceSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceSettingsServiceSettings.java
@@ -30,6 +30,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceSettingsServiceSettings
     extends ClientSettings<InstanceSettingsServiceSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceTemplatesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceTemplatesClient.java
index 0830696343c0..e5e4bdf67bf5 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceTemplatesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceTemplatesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -258,6 +259,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceTemplatesClient implements BackgroundResource {
   private final InstanceTemplatesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceTemplatesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceTemplatesSettings.java
index 9fedba8cd420..93fc9d041052 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceTemplatesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstanceTemplatesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceTemplatesSettings extends ClientSettings<InstanceTemplatesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstancesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstancesClient.java
index 6a214310b7b3..3415b9c00b59 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstancesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstancesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1068,6 +1069,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstancesClient implements BackgroundResource {
   private final InstancesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstancesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstancesSettings.java
index 72d3692515bb..48f8370286ad 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstancesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstancesSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstancesSettings extends ClientSettings<InstancesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstantSnapshotGroupsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstantSnapshotGroupsClient.java
index 11b314488e3b..058998e29fc8 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstantSnapshotGroupsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstantSnapshotGroupsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -240,6 +241,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstantSnapshotGroupsClient implements BackgroundResource {
   private final InstantSnapshotGroupsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstantSnapshotGroupsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstantSnapshotGroupsSettings.java
index dce1a92376ad..359340688489 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstantSnapshotGroupsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstantSnapshotGroupsSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstantSnapshotGroupsSettings extends ClientSettings<InstantSnapshotGroupsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstantSnapshotsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstantSnapshotsClient.java
index 2c7db7ac067d..f4bc773bd254 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstantSnapshotsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstantSnapshotsClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -279,6 +280,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstantSnapshotsClient implements BackgroundResource {
   private final InstantSnapshotsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstantSnapshotsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstantSnapshotsSettings.java
index 29e2e8e470e8..ab0a3354558b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstantSnapshotsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InstantSnapshotsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstantSnapshotsSettings extends ClientSettings<InstantSnapshotsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectAttachmentGroupsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectAttachmentGroupsClient.java
index 53ef834cd311..dce9f31d2fbd 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectAttachmentGroupsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectAttachmentGroupsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -276,6 +277,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterconnectAttachmentGroupsClient implements BackgroundResource {
   private final InterconnectAttachmentGroupsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectAttachmentGroupsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectAttachmentGroupsSettings.java
index ec76167558f7..f2dd5ecca743 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectAttachmentGroupsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectAttachmentGroupsSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterconnectAttachmentGroupsSettings
     extends ClientSettings<InterconnectAttachmentGroupsSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectAttachmentsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectAttachmentsClient.java
index ce7523754be0..31049a646cac 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectAttachmentsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectAttachmentsClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -245,6 +246,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterconnectAttachmentsClient implements BackgroundResource {
   private final InterconnectAttachmentsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectAttachmentsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectAttachmentsSettings.java
index 7c0e2e0be791..38b0fd87f604 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectAttachmentsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectAttachmentsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterconnectAttachmentsSettings
     extends ClientSettings<InterconnectAttachmentsSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectGroupsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectGroupsClient.java
index bbbc2454a78d..7f21e2dde003 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectGroupsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectGroupsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -293,6 +294,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterconnectGroupsClient implements BackgroundResource {
   private final InterconnectGroupsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectGroupsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectGroupsSettings.java
index b8bf246f610a..ea07472ec23e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectGroupsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectGroupsSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterconnectGroupsSettings extends ClientSettings<InterconnectGroupsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectLocationsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectLocationsClient.java
index b9e12ed713c8..c0def157e43f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectLocationsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectLocationsClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterconnectLocationsClient implements BackgroundResource {
   private final InterconnectLocationsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectLocationsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectLocationsSettings.java
index 4ab50262dbb8..eb81a1a38322 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectLocationsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectLocationsSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterconnectLocationsSettings extends ClientSettings<InterconnectLocationsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectRemoteLocationsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectRemoteLocationsClient.java
index 833d4f4922a4..bdc37008d19f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectRemoteLocationsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectRemoteLocationsClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterconnectRemoteLocationsClient implements BackgroundResource {
   private final InterconnectRemoteLocationsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectRemoteLocationsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectRemoteLocationsSettings.java
index a3c946e8129a..da06b047e833 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectRemoteLocationsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectRemoteLocationsSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterconnectRemoteLocationsSettings
     extends ClientSettings<InterconnectRemoteLocationsSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectsClient.java
index 58acc0c6dd8b..92fe13e8b008 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -256,6 +257,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterconnectsClient implements BackgroundResource {
   private final InterconnectsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectsSettings.java
index 02a685431575..ae5c63058b39 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/InterconnectsSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterconnectsSettings extends ClientSettings<InterconnectsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/LicenseCodesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/LicenseCodesClient.java
index 7c52fede2662..c26a47622ce4 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/LicenseCodesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/LicenseCodesClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LicenseCodesClient implements BackgroundResource {
   private final LicenseCodesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/LicenseCodesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/LicenseCodesSettings.java
index bfdb0325b4a2..7bd29a3a6465 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/LicenseCodesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/LicenseCodesSettings.java
@@ -29,6 +29,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -79,6 +80,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LicenseCodesSettings extends ClientSettings<LicenseCodesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/LicensesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/LicensesClient.java
index 594134cd6a18..9032f5c74002 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/LicensesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/LicensesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -253,6 +254,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LicensesClient implements BackgroundResource {
   private final LicensesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/LicensesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/LicensesSettings.java
index bf23154625ab..7399bb5d07e6 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/LicensesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/LicensesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LicensesSettings extends ClientSettings<LicensesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/MachineImagesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/MachineImagesClient.java
index a42a7f9d9642..16d2e763575e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/MachineImagesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/MachineImagesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -253,6 +254,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MachineImagesClient implements BackgroundResource {
   private final MachineImagesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/MachineImagesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/MachineImagesSettings.java
index 1352af7f1673..0a6f055c86f0 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/MachineImagesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/MachineImagesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MachineImagesSettings extends ClientSettings<MachineImagesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/MachineTypesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/MachineTypesClient.java
index 03ff6163f461..228c3025c31d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/MachineTypesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/MachineTypesClient.java
@@ -32,6 +32,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -162,6 +163,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MachineTypesClient implements BackgroundResource {
   private final MachineTypesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/MachineTypesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/MachineTypesSettings.java
index 543d741a5497..49ca4ebbe681 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/MachineTypesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/MachineTypesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MachineTypesSettings extends ClientSettings<MachineTypesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkAttachmentsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkAttachmentsClient.java
index 3c4df632d858..897608fc032e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkAttachmentsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkAttachmentsClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -278,6 +279,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkAttachmentsClient implements BackgroundResource {
   private final NetworkAttachmentsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkAttachmentsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkAttachmentsSettings.java
index 0ed6cb62fe23..13503d372336 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkAttachmentsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkAttachmentsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkAttachmentsSettings extends ClientSettings<NetworkAttachmentsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkEdgeSecurityServicesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkEdgeSecurityServicesClient.java
index d5c48a66f8b4..fcb2700f6c1b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkEdgeSecurityServicesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkEdgeSecurityServicesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -207,6 +208,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkEdgeSecurityServicesClient implements BackgroundResource {
   private final NetworkEdgeSecurityServicesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkEdgeSecurityServicesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkEdgeSecurityServicesSettings.java
index 13965c94d19e..8682c8734b39 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkEdgeSecurityServicesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkEdgeSecurityServicesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkEdgeSecurityServicesSettings
     extends ClientSettings<NetworkEdgeSecurityServicesSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkEndpointGroupsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkEndpointGroupsClient.java
index c5d8cc867960..69656053db67 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkEndpointGroupsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkEndpointGroupsClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -284,6 +285,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkEndpointGroupsClient implements BackgroundResource {
   private final NetworkEndpointGroupsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkEndpointGroupsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkEndpointGroupsSettings.java
index 44fc19f68ab1..ea9067924174 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkEndpointGroupsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkEndpointGroupsSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkEndpointGroupsSettings extends ClientSettings<NetworkEndpointGroupsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkFirewallPoliciesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkFirewallPoliciesClient.java
index a63554b65638..578ce8ba6eeb 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkFirewallPoliciesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkFirewallPoliciesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -503,6 +504,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkFirewallPoliciesClient implements BackgroundResource {
   private final NetworkFirewallPoliciesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkFirewallPoliciesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkFirewallPoliciesSettings.java
index da10c931bb08..d29670fd2f6e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkFirewallPoliciesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkFirewallPoliciesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkFirewallPoliciesSettings
     extends ClientSettings<NetworkFirewallPoliciesSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkProfilesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkProfilesClient.java
index 69e7e252fe39..dec106533acc 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkProfilesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkProfilesClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -143,6 +144,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkProfilesClient implements BackgroundResource {
   private final NetworkProfilesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkProfilesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkProfilesSettings.java
index 16b0cf635097..43e760d1022c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkProfilesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworkProfilesSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkProfilesSettings extends ClientSettings<NetworkProfilesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworksClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworksClient.java
index 5fefea65f7e6..be15d382a17a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworksClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworksClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -344,6 +345,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworksClient implements BackgroundResource {
   private final NetworksSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworksSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworksSettings.java
index 2bde79cb763d..1487e3200bca 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworksSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NetworksSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworksSettings extends ClientSettings<NetworksSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeGroupsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeGroupsClient.java
index 57f27121b3ee..ed36017e4905 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeGroupsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeGroupsClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -389,6 +390,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NodeGroupsClient implements BackgroundResource {
   private final NodeGroupsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeGroupsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeGroupsSettings.java
index 44a44d050fb4..3c19e11bd574 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeGroupsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeGroupsSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NodeGroupsSettings extends ClientSettings<NodeGroupsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeTemplatesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeTemplatesClient.java
index f21b1d0fdb5e..c5c1f7d56f7f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeTemplatesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeTemplatesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -256,6 +257,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NodeTemplatesClient implements BackgroundResource {
   private final NodeTemplatesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeTemplatesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeTemplatesSettings.java
index 780349792e62..249eada1b6ca 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeTemplatesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeTemplatesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NodeTemplatesSettings extends ClientSettings<NodeTemplatesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeTypesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeTypesClient.java
index 849d523b6aa2..6ad27f7a1b87 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeTypesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeTypesClient.java
@@ -32,6 +32,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -162,6 +163,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NodeTypesClient implements BackgroundResource {
   private final NodeTypesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeTypesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeTypesSettings.java
index 8f42ad804be3..36778db58d4e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeTypesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/NodeTypesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NodeTypesSettings extends ClientSettings<NodeTypesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/OrganizationSecurityPoliciesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/OrganizationSecurityPoliciesClient.java
index f8f8aa0576ce..62d0fbec2fb7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/OrganizationSecurityPoliciesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/OrganizationSecurityPoliciesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -423,6 +424,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationSecurityPoliciesClient implements BackgroundResource {
   private final OrganizationSecurityPoliciesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/OrganizationSecurityPoliciesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/OrganizationSecurityPoliciesSettings.java
index d766ca42d4c3..5c75c46b4ccf 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/OrganizationSecurityPoliciesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/OrganizationSecurityPoliciesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationSecurityPoliciesSettings
     extends ClientSettings<OrganizationSecurityPoliciesSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PacketMirroringsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PacketMirroringsClient.java
index b9f64d400818..c0a4132cf573 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PacketMirroringsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PacketMirroringsClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -242,6 +243,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PacketMirroringsClient implements BackgroundResource {
   private final PacketMirroringsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PacketMirroringsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PacketMirroringsSettings.java
index 9a7894c34c69..f3dd795f6813 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PacketMirroringsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PacketMirroringsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PacketMirroringsSettings extends ClientSettings<PacketMirroringsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PreviewFeaturesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PreviewFeaturesClient.java
index 9dc7d5149bff..9c63addaedfa 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PreviewFeaturesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PreviewFeaturesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -164,6 +165,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PreviewFeaturesClient implements BackgroundResource {
   private final PreviewFeaturesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PreviewFeaturesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PreviewFeaturesSettings.java
index fff37b680939..c2bec1b502c6 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PreviewFeaturesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PreviewFeaturesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PreviewFeaturesSettings extends ClientSettings<PreviewFeaturesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ProjectsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ProjectsClient.java
index d3c00932b19a..87fa5252daaf 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ProjectsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ProjectsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -378,6 +379,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectsClient implements BackgroundResource {
   private final ProjectsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ProjectsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ProjectsSettings.java
index 9a886ac82b94..c233d0ffc3b5 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ProjectsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ProjectsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectsSettings extends ClientSettings<ProjectsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PublicAdvertisedPrefixesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PublicAdvertisedPrefixesClient.java
index 4f79833a33d4..9f13d59ee5ff 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PublicAdvertisedPrefixesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PublicAdvertisedPrefixesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -242,6 +243,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PublicAdvertisedPrefixesClient implements BackgroundResource {
   private final PublicAdvertisedPrefixesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PublicAdvertisedPrefixesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PublicAdvertisedPrefixesSettings.java
index 714672691186..ff4cdc3d49e8 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PublicAdvertisedPrefixesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PublicAdvertisedPrefixesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PublicAdvertisedPrefixesSettings
     extends ClientSettings<PublicAdvertisedPrefixesSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PublicDelegatedPrefixesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PublicDelegatedPrefixesClient.java
index cc719357c011..1ad5e34297c3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PublicDelegatedPrefixesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PublicDelegatedPrefixesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -264,6 +265,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PublicDelegatedPrefixesClient implements BackgroundResource {
   private final PublicDelegatedPrefixesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PublicDelegatedPrefixesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PublicDelegatedPrefixesSettings.java
index 29f87ebf3a2c..a30f74ed8c9f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PublicDelegatedPrefixesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/PublicDelegatedPrefixesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PublicDelegatedPrefixesSettings
     extends ClientSettings<PublicDelegatedPrefixesSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionAutoscalersClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionAutoscalersClient.java
index 767f0d8be7c9..bc3b00414f87 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionAutoscalersClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionAutoscalersClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -240,6 +241,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionAutoscalersClient implements BackgroundResource {
   private final RegionAutoscalersSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionAutoscalersSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionAutoscalersSettings.java
index eaaac58f5f11..8b6940d17bc5 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionAutoscalersSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionAutoscalersSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionAutoscalersSettings extends ClientSettings<RegionAutoscalersSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionBackendBucketsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionBackendBucketsClient.java
index 960f091393fb..42ae221766f8 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionBackendBucketsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionBackendBucketsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -277,6 +278,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionBackendBucketsClient implements BackgroundResource {
   private final RegionBackendBucketsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionBackendBucketsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionBackendBucketsSettings.java
index 55c84d40a7c7..805334a0b2c2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionBackendBucketsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionBackendBucketsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionBackendBucketsSettings extends ClientSettings<RegionBackendBucketsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionBackendServicesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionBackendServicesClient.java
index 7aa00dd560f2..287abd769bac 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionBackendServicesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionBackendServicesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -333,6 +334,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionBackendServicesClient implements BackgroundResource {
   private final RegionBackendServicesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionBackendServicesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionBackendServicesSettings.java
index 4c35ebf729c8..49ffce823ba6 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionBackendServicesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionBackendServicesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionBackendServicesSettings extends ClientSettings<RegionBackendServicesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionCommitmentsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionCommitmentsClient.java
index 7307f8344471..fa199172e513 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionCommitmentsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionCommitmentsClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -205,6 +206,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionCommitmentsClient implements BackgroundResource {
   private final RegionCommitmentsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionCommitmentsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionCommitmentsSettings.java
index 9fc1b6c391c8..0b5f9b2736ce 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionCommitmentsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionCommitmentsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionCommitmentsSettings extends ClientSettings<RegionCommitmentsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionCompositeHealthChecksClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionCompositeHealthChecksClient.java
index 173b0f0a9e38..32ba0d64f9ca 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionCompositeHealthChecksClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionCompositeHealthChecksClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -262,6 +263,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionCompositeHealthChecksClient implements BackgroundResource {
   private final RegionCompositeHealthChecksSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionCompositeHealthChecksSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionCompositeHealthChecksSettings.java
index 8ab4b5417072..5636851319ce 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionCompositeHealthChecksSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionCompositeHealthChecksSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionCompositeHealthChecksSettings
     extends ClientSettings<RegionCompositeHealthChecksSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionDiskTypesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionDiskTypesClient.java
index c6c0a7c9d43f..edc64ad117ce 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionDiskTypesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionDiskTypesClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionDiskTypesClient implements BackgroundResource {
   private final RegionDiskTypesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionDiskTypesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionDiskTypesSettings.java
index 3dbbb81302af..07e2493e40c8 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionDiskTypesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionDiskTypesSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionDiskTypesSettings extends ClientSettings<RegionDiskTypesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionDisksClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionDisksClient.java
index ce409c246b04..a08629915443 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionDisksClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionDisksClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -444,6 +445,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionDisksClient implements BackgroundResource {
   private final RegionDisksSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionDisksSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionDisksSettings.java
index 0e08b3404542..08d640ee2a43 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionDisksSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionDisksSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionDisksSettings extends ClientSettings<RegionDisksSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthAggregationPoliciesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthAggregationPoliciesClient.java
index ab53242d57be..99774191bb7b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthAggregationPoliciesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthAggregationPoliciesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -244,6 +245,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionHealthAggregationPoliciesClient implements BackgroundResource {
   private final RegionHealthAggregationPoliciesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthAggregationPoliciesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthAggregationPoliciesSettings.java
index 898d067780d9..6b170755bfb1 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthAggregationPoliciesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthAggregationPoliciesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionHealthAggregationPoliciesSettings
     extends ClientSettings<RegionHealthAggregationPoliciesSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthCheckServicesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthCheckServicesClient.java
index 26eb72a1086f..b8b85a4c567c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthCheckServicesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthCheckServicesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -244,6 +245,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionHealthCheckServicesClient implements BackgroundResource {
   private final RegionHealthCheckServicesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthCheckServicesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthCheckServicesSettings.java
index fa5ee6cbab08..05e8acfd24df 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthCheckServicesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthCheckServicesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionHealthCheckServicesSettings
     extends ClientSettings<RegionHealthCheckServicesSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthChecksClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthChecksClient.java
index d55488aa7412..645cf11ef251 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthChecksClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthChecksClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -240,6 +241,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionHealthChecksClient implements BackgroundResource {
   private final RegionHealthChecksSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthChecksSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthChecksSettings.java
index 6e677a89494a..0536c5b39ae1 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthChecksSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthChecksSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionHealthChecksSettings extends ClientSettings<RegionHealthChecksSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthSourcesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthSourcesClient.java
index ceb70e53400d..91ce545583ef 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthSourcesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthSourcesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -260,6 +261,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionHealthSourcesClient implements BackgroundResource {
   private final RegionHealthSourcesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthSourcesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthSourcesSettings.java
index e87950d34f38..c6ac1ce80f8e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthSourcesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionHealthSourcesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionHealthSourcesSettings extends ClientSettings<RegionHealthSourcesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupManagerResizeRequestsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupManagerResizeRequestsClient.java
index ed03d471eb3b..ddc4a37b2ad4 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupManagerResizeRequestsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupManagerResizeRequestsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -214,6 +215,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionInstanceGroupManagerResizeRequestsClient implements BackgroundResource {
   private final RegionInstanceGroupManagerResizeRequestsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupManagerResizeRequestsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupManagerResizeRequestsSettings.java
index e34ac3c0a4dc..ec1a03d3579f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupManagerResizeRequestsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupManagerResizeRequestsSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionInstanceGroupManagerResizeRequestsSettings
     extends ClientSettings<RegionInstanceGroupManagerResizeRequestsSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupManagersClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupManagersClient.java
index 187c776144c8..4db1eea90d59 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupManagersClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupManagersClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -571,6 +572,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionInstanceGroupManagersClient implements BackgroundResource {
   private final RegionInstanceGroupManagersSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupManagersSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupManagersSettings.java
index c51e36469ce8..01ed54351250 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupManagersSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupManagersSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionInstanceGroupManagersSettings
     extends ClientSettings<RegionInstanceGroupManagersSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupsClient.java
index 59ebd54a4b2c..60a654dce33f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -203,6 +204,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionInstanceGroupsClient implements BackgroundResource {
   private final RegionInstanceGroupsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupsSettings.java
index 0ed5c62d330d..cfe1e0a46c35 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceGroupsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionInstanceGroupsSettings extends ClientSettings<RegionInstanceGroupsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceTemplatesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceTemplatesClient.java
index 22fe46e3fabb..c8bec4cc62d2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceTemplatesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceTemplatesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -186,6 +187,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionInstanceTemplatesClient implements BackgroundResource {
   private final RegionInstanceTemplatesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceTemplatesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceTemplatesSettings.java
index b165dd2b9ae9..90a2dad1615f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceTemplatesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstanceTemplatesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionInstanceTemplatesSettings
     extends ClientSettings<RegionInstanceTemplatesSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstancesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstancesClient.java
index 441d83e2e806..9a0fa737291b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstancesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstancesClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionInstancesClient implements BackgroundResource {
   private final RegionInstancesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstancesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstancesSettings.java
index e8c5ee0edd54..47304ec5d6cc 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstancesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstancesSettings.java
@@ -30,6 +30,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionInstancesSettings extends ClientSettings<RegionInstancesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstantSnapshotGroupsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstantSnapshotGroupsClient.java
index 4484b8575c79..bf1e7c5661dd 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstantSnapshotGroupsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstantSnapshotGroupsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -240,6 +241,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionInstantSnapshotGroupsClient implements BackgroundResource {
   private final RegionInstantSnapshotGroupsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstantSnapshotGroupsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstantSnapshotGroupsSettings.java
index 58c13af292cd..22369bbb2546 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstantSnapshotGroupsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstantSnapshotGroupsSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionInstantSnapshotGroupsSettings
     extends ClientSettings<RegionInstantSnapshotGroupsSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstantSnapshotsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstantSnapshotsClient.java
index 6829db718abc..0243209af588 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstantSnapshotsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstantSnapshotsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -259,6 +260,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionInstantSnapshotsClient implements BackgroundResource {
   private final RegionInstantSnapshotsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstantSnapshotsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstantSnapshotsSettings.java
index 679bc40b684f..eabcb1cda84c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstantSnapshotsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionInstantSnapshotsSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionInstantSnapshotsSettings extends ClientSettings<RegionInstantSnapshotsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNetworkEndpointGroupsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNetworkEndpointGroupsClient.java
index 55ecc9b03aad..4fdb62bb2ba2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNetworkEndpointGroupsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNetworkEndpointGroupsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -245,6 +246,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionNetworkEndpointGroupsClient implements BackgroundResource {
   private final RegionNetworkEndpointGroupsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNetworkEndpointGroupsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNetworkEndpointGroupsSettings.java
index d1e428fe2059..8b9769278020 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNetworkEndpointGroupsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNetworkEndpointGroupsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionNetworkEndpointGroupsSettings
     extends ClientSettings<RegionNetworkEndpointGroupsSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNetworkFirewallPoliciesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNetworkFirewallPoliciesClient.java
index d31000e6327c..3a27c4893528 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNetworkFirewallPoliciesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNetworkFirewallPoliciesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -427,6 +428,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionNetworkFirewallPoliciesClient implements BackgroundResource {
   private final RegionNetworkFirewallPoliciesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNetworkFirewallPoliciesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNetworkFirewallPoliciesSettings.java
index e57a35608e7c..1ccc201c7526 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNetworkFirewallPoliciesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNetworkFirewallPoliciesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionNetworkFirewallPoliciesSettings
     extends ClientSettings<RegionNetworkFirewallPoliciesSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNotificationEndpointsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNotificationEndpointsClient.java
index d914c43feafb..6c0e3b7967ae 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNotificationEndpointsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNotificationEndpointsClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -224,6 +225,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionNotificationEndpointsClient implements BackgroundResource {
   private final RegionNotificationEndpointsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNotificationEndpointsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNotificationEndpointsSettings.java
index 5e539cbdcdc6..b626862cb61a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNotificationEndpointsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionNotificationEndpointsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionNotificationEndpointsSettings
     extends ClientSettings<RegionNotificationEndpointsSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionOperationsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionOperationsClient.java
index ef1c538b1f21..9e9c4ac93c2c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionOperationsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionOperationsClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -183,6 +184,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionOperationsClient implements BackgroundResource {
   private final RegionOperationsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionOperationsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionOperationsSettings.java
index f1f2e65d2ac9..b54a90f450fd 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionOperationsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionOperationsSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionOperationsSettings extends ClientSettings<RegionOperationsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSecurityPoliciesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSecurityPoliciesClient.java
index ddf52a83eb2c..ea6281c1f132 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSecurityPoliciesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSecurityPoliciesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -298,6 +299,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionSecurityPoliciesClient implements BackgroundResource {
   private final RegionSecurityPoliciesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSecurityPoliciesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSecurityPoliciesSettings.java
index 99c45bf5d75d..10778575ff68 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSecurityPoliciesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSecurityPoliciesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionSecurityPoliciesSettings extends ClientSettings<RegionSecurityPoliciesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSnapshotSettingsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSnapshotSettingsClient.java
index 950ab9b81289..b1318db15f87 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSnapshotSettingsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSnapshotSettingsClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -138,6 +139,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionSnapshotSettingsClient implements BackgroundResource {
   private final RegionSnapshotSettingsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSnapshotSettingsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSnapshotSettingsSettings.java
index 762cba86e191..e4136fbdd0f5 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSnapshotSettingsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSnapshotSettingsSettings.java
@@ -30,6 +30,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionSnapshotSettingsSettings extends ClientSettings<RegionSnapshotSettingsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSnapshotsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSnapshotsClient.java
index a7fd1b2a7f75..7d635e00af37 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSnapshotsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSnapshotsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -277,6 +278,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionSnapshotsClient implements BackgroundResource {
   private final RegionSnapshotsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSnapshotsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSnapshotsSettings.java
index d9c19d2c8006..341337f04a1f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSnapshotsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSnapshotsSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionSnapshotsSettings extends ClientSettings<RegionSnapshotsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSslCertificatesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSslCertificatesClient.java
index 890ae5c54340..ed66495f486b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSslCertificatesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSslCertificatesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -185,6 +186,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionSslCertificatesClient implements BackgroundResource {
   private final RegionSslCertificatesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSslCertificatesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSslCertificatesSettings.java
index 1b1e64b7dd85..11f90f390a77 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSslCertificatesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSslCertificatesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionSslCertificatesSettings extends ClientSettings<RegionSslCertificatesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSslPoliciesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSslPoliciesClient.java
index 82b380fcfe6f..17ea31102a13 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSslPoliciesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSslPoliciesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -221,6 +222,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionSslPoliciesClient implements BackgroundResource {
   private final RegionSslPoliciesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSslPoliciesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSslPoliciesSettings.java
index b452f99f96d4..61b0c153e7a4 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSslPoliciesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionSslPoliciesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionSslPoliciesSettings extends ClientSettings<RegionSslPoliciesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetHttpProxiesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetHttpProxiesClient.java
index db7537a2a884..2250a6d3e64d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetHttpProxiesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetHttpProxiesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -205,6 +206,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionTargetHttpProxiesClient implements BackgroundResource {
   private final RegionTargetHttpProxiesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetHttpProxiesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetHttpProxiesSettings.java
index 0c3a22641948..896b73f0bda7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetHttpProxiesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetHttpProxiesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionTargetHttpProxiesSettings
     extends ClientSettings<RegionTargetHttpProxiesSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetHttpsProxiesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetHttpsProxiesClient.java
index b748abd7d830..7534e764a466 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetHttpsProxiesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetHttpsProxiesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -243,6 +244,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionTargetHttpsProxiesClient implements BackgroundResource {
   private final RegionTargetHttpsProxiesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetHttpsProxiesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetHttpsProxiesSettings.java
index ef49bc5490fb..2df1d2a95b35 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetHttpsProxiesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetHttpsProxiesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionTargetHttpsProxiesSettings
     extends ClientSettings<RegionTargetHttpsProxiesSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetTcpProxiesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetTcpProxiesClient.java
index 5357a6441b40..35a988225baa 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetTcpProxiesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetTcpProxiesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -185,6 +186,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionTargetTcpProxiesClient implements BackgroundResource {
   private final RegionTargetTcpProxiesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetTcpProxiesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetTcpProxiesSettings.java
index e019ac08cff3..d5dd64619e4d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetTcpProxiesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionTargetTcpProxiesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionTargetTcpProxiesSettings extends ClientSettings<RegionTargetTcpProxiesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionUrlMapsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionUrlMapsClient.java
index ae2760dfea5d..3af1a2828a5b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionUrlMapsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionUrlMapsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -237,6 +238,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionUrlMapsClient implements BackgroundResource {
   private final RegionUrlMapsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionUrlMapsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionUrlMapsSettings.java
index 58e9d8f34f36..71edf3e00fb2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionUrlMapsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionUrlMapsSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionUrlMapsSettings extends ClientSettings<RegionUrlMapsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionZonesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionZonesClient.java
index 44e2b004680c..0d1b6f7a54a7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionZonesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionZonesClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionZonesClient implements BackgroundResource {
   private final RegionZonesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionZonesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionZonesSettings.java
index aeae987a4f86..2fa1196fbb3c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionZonesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionZonesSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionZonesSettings extends ClientSettings<RegionZonesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionsClient.java
index 5efff221cfb1..59d3d387baed 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionsClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -143,6 +144,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionsClient implements BackgroundResource {
   private final RegionsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionsSettings.java
index 6de8811ddf74..838301a78abf 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RegionsSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionsSettings extends ClientSettings<RegionsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationBlocksClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationBlocksClient.java
index b41fa30b0275..02e28d890e94 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationBlocksClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationBlocksClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -221,6 +222,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReservationBlocksClient implements BackgroundResource {
   private final ReservationBlocksSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationBlocksSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationBlocksSettings.java
index 8c932b60b226..30b76e44e660 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationBlocksSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationBlocksSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReservationBlocksSettings extends ClientSettings<ReservationBlocksSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationSlotsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationSlotsClient.java
index 67e02da99a3c..905ef7b36c23 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationSlotsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationSlotsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -186,6 +187,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReservationSlotsClient implements BackgroundResource {
   private final ReservationSlotsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationSlotsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationSlotsSettings.java
index 3d8d28764a9a..a05be3d08069 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationSlotsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationSlotsSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReservationSlotsSettings extends ClientSettings<ReservationSlotsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationSubBlocksClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationSubBlocksClient.java
index f09bfefdc832..2f8186a6da85 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationSubBlocksClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationSubBlocksClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -260,6 +261,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReservationSubBlocksClient implements BackgroundResource {
   private final ReservationSubBlocksSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationSubBlocksSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationSubBlocksSettings.java
index 0ee02fb65211..8b73b9c72184 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationSubBlocksSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationSubBlocksSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReservationSubBlocksSettings extends ClientSettings<ReservationSubBlocksSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationsClient.java
index cfd0547e7f33..8a41197e8f94 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationsClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -313,6 +314,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReservationsClient implements BackgroundResource {
   private final ReservationsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationsSettings.java
index b158b8e75210..7cdae0f50075 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ReservationsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReservationsSettings extends ClientSettings<ReservationsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ResourcePoliciesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ResourcePoliciesClient.java
index 6985af34be67..15486cde2730 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ResourcePoliciesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ResourcePoliciesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -278,6 +279,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ResourcePoliciesClient implements BackgroundResource {
   private final ResourcePoliciesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ResourcePoliciesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ResourcePoliciesSettings.java
index 4de344895c26..c174678714b7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ResourcePoliciesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ResourcePoliciesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ResourcePoliciesSettings extends ClientSettings<ResourcePoliciesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RolloutPlansClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RolloutPlansClient.java
index 1606df0f6671..d26bd9f0bb8d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RolloutPlansClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RolloutPlansClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -180,6 +181,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RolloutPlansClient implements BackgroundResource {
   private final RolloutPlansSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RolloutPlansSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RolloutPlansSettings.java
index 9684d5104aad..7b5e3b25c8f9 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RolloutPlansSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RolloutPlansSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RolloutPlansSettings extends ClientSettings<RolloutPlansSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RolloutsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RolloutsClient.java
index fb278dd0f8a0..297e46f9a938 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RolloutsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RolloutsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -180,6 +181,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RolloutsClient implements BackgroundResource {
   private final RolloutsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RolloutsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RolloutsSettings.java
index 134412557653..7fca96c6ff08 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RolloutsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RolloutsSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RolloutsSettings extends ClientSettings<RolloutsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RoutersClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RoutersClient.java
index 1b93599821b7..d866c19f2691 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RoutersClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RoutersClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -425,6 +426,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RoutersClient implements BackgroundResource {
   private final RoutersSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RoutersSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RoutersSettings.java
index ed8fc8818bf5..5a6d418aa7de 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RoutersSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RoutersSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RoutersSettings extends ClientSettings<RoutersSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RoutesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RoutesClient.java
index 755c865b7601..d6d05536882d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RoutesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RoutesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -197,6 +198,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RoutesClient implements BackgroundResource {
   private final RoutesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RoutesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RoutesSettings.java
index aaa82700f771..5f21e44a5991 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RoutesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/RoutesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RoutesSettings extends ClientSettings<RoutesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SecurityPoliciesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SecurityPoliciesClient.java
index 809f76aaf36e..ef9dc4f67473 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SecurityPoliciesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SecurityPoliciesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -335,6 +336,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecurityPoliciesClient implements BackgroundResource {
   private final SecurityPoliciesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SecurityPoliciesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SecurityPoliciesSettings.java
index a5026a67f0df..dc89fb849860 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SecurityPoliciesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SecurityPoliciesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecurityPoliciesSettings extends ClientSettings<SecurityPoliciesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ServiceAttachmentsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ServiceAttachmentsClient.java
index b7279a5043bf..537b906a96d8 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ServiceAttachmentsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ServiceAttachmentsClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -278,6 +279,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceAttachmentsClient implements BackgroundResource {
   private final ServiceAttachmentsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ServiceAttachmentsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ServiceAttachmentsSettings.java
index 359505b3dedb..4d74ba04e4f2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ServiceAttachmentsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ServiceAttachmentsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceAttachmentsSettings extends ClientSettings<ServiceAttachmentsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SnapshotSettingsServiceClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SnapshotSettingsServiceClient.java
index 77856b507eec..9ab3ff2e5d53 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SnapshotSettingsServiceClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SnapshotSettingsServiceClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SnapshotSettingsServiceClient implements BackgroundResource {
   private final SnapshotSettingsServiceSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SnapshotSettingsServiceSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SnapshotSettingsServiceSettings.java
index e9b7114a0377..f7252096fe21 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SnapshotSettingsServiceSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SnapshotSettingsServiceSettings.java
@@ -30,6 +30,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SnapshotSettingsServiceSettings
     extends ClientSettings<SnapshotSettingsServiceSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SnapshotsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SnapshotsClient.java
index cbcd8d27a66b..bdc4a4dbb25e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SnapshotsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SnapshotsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -273,6 +274,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SnapshotsClient implements BackgroundResource {
   private final SnapshotsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SnapshotsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SnapshotsSettings.java
index 2e5012618718..be7de404e083 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SnapshotsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SnapshotsSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SnapshotsSettings extends ClientSettings<SnapshotsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SslCertificatesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SslCertificatesClient.java
index b13c93613791..a85b965f654a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SslCertificatesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SslCertificatesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -204,6 +205,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SslCertificatesClient implements BackgroundResource {
   private final SslCertificatesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SslCertificatesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SslCertificatesSettings.java
index c20c79761286..8f41719f965c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SslCertificatesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SslCertificatesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SslCertificatesSettings extends ClientSettings<SslCertificatesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SslPoliciesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SslPoliciesClient.java
index 3acd58872b96..169713f0f3c5 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SslPoliciesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SslPoliciesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -238,6 +239,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SslPoliciesClient implements BackgroundResource {
   private final SslPoliciesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SslPoliciesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SslPoliciesSettings.java
index b55f55c79710..68166518387b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SslPoliciesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SslPoliciesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SslPoliciesSettings extends ClientSettings<SslPoliciesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/StoragePoolTypesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/StoragePoolTypesClient.java
index 6f80749470a5..dbbdb2d3fd7b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/StoragePoolTypesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/StoragePoolTypesClient.java
@@ -32,6 +32,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -165,6 +166,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StoragePoolTypesClient implements BackgroundResource {
   private final StoragePoolTypesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/StoragePoolTypesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/StoragePoolTypesSettings.java
index 36b71d0433a7..625c2b9734d6 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/StoragePoolTypesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/StoragePoolTypesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StoragePoolTypesSettings extends ClientSettings<StoragePoolTypesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/StoragePoolsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/StoragePoolsClient.java
index 5b937c7189d4..a4af38eb1ff5 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/StoragePoolsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/StoragePoolsClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -294,6 +295,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StoragePoolsClient implements BackgroundResource {
   private final StoragePoolsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/StoragePoolsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/StoragePoolsSettings.java
index d20a43e3ea0c..d637827680a4 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/StoragePoolsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/StoragePoolsSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StoragePoolsSettings extends ClientSettings<StoragePoolsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SubnetworksClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SubnetworksClient.java
index 480bf9c9c0d0..0cc7653e48ce 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SubnetworksClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SubnetworksClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -332,6 +333,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SubnetworksClient implements BackgroundResource {
   private final SubnetworksSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SubnetworksSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SubnetworksSettings.java
index 19603cc12715..0e7b1faa0ceb 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SubnetworksSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/SubnetworksSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SubnetworksSettings extends ClientSettings<SubnetworksSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetGrpcProxiesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetGrpcProxiesClient.java
index a2ffa908c30e..4ea2a67a6409 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetGrpcProxiesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetGrpcProxiesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -202,6 +203,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetGrpcProxiesClient implements BackgroundResource {
   private final TargetGrpcProxiesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetGrpcProxiesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetGrpcProxiesSettings.java
index 82b39c71b637..479deb1f7199 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetGrpcProxiesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetGrpcProxiesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetGrpcProxiesSettings extends ClientSettings<TargetGrpcProxiesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetHttpProxiesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetHttpProxiesClient.java
index fc9ec8c904eb..a033ce5241cb 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetHttpProxiesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetHttpProxiesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -242,6 +243,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetHttpProxiesClient implements BackgroundResource {
   private final TargetHttpProxiesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetHttpProxiesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetHttpProxiesSettings.java
index 12cd2198e4ba..78a64372a35f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetHttpProxiesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetHttpProxiesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetHttpProxiesSettings extends ClientSettings<TargetHttpProxiesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetHttpsProxiesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetHttpsProxiesClient.java
index fca34787f196..58aaf10d71fd 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetHttpsProxiesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetHttpsProxiesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -318,6 +319,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetHttpsProxiesClient implements BackgroundResource {
   private final TargetHttpsProxiesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetHttpsProxiesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetHttpsProxiesSettings.java
index 7addea3edbf6..421ae7112c71 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetHttpsProxiesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetHttpsProxiesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetHttpsProxiesSettings extends ClientSettings<TargetHttpsProxiesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetInstancesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetInstancesClient.java
index 4079db6d4398..d3fc96baf09f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetInstancesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetInstancesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -242,6 +243,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetInstancesClient implements BackgroundResource {
   private final TargetInstancesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetInstancesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetInstancesSettings.java
index 207103e650de..7683b7aad9f6 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetInstancesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetInstancesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetInstancesSettings extends ClientSettings<TargetInstancesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetPoolsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetPoolsClient.java
index 9dece0754475..3d2fbdca590b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetPoolsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetPoolsClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -352,6 +353,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetPoolsClient implements BackgroundResource {
   private final TargetPoolsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetPoolsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetPoolsSettings.java
index eebcf99ad980..5e2ead93df51 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetPoolsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetPoolsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetPoolsSettings extends ClientSettings<TargetPoolsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetSslProxiesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetSslProxiesClient.java
index 2ba4f35f1d2b..7039712aed8a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetSslProxiesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetSslProxiesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -296,6 +297,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetSslProxiesClient implements BackgroundResource {
   private final TargetSslProxiesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetSslProxiesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetSslProxiesSettings.java
index f89d420c94b3..c2cf7725e078 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetSslProxiesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetSslProxiesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetSslProxiesSettings extends ClientSettings<TargetSslProxiesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetTcpProxiesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetTcpProxiesClient.java
index 7cce033b761a..12c5db6271c8 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetTcpProxiesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetTcpProxiesClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -260,6 +261,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetTcpProxiesClient implements BackgroundResource {
   private final TargetTcpProxiesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetTcpProxiesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetTcpProxiesSettings.java
index 8e53cf151a5d..0c2875719e47 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetTcpProxiesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetTcpProxiesSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetTcpProxiesSettings extends ClientSettings<TargetTcpProxiesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetVpnGatewaysClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetVpnGatewaysClient.java
index b7d4cb925e45..2bab0efd84b2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetVpnGatewaysClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetVpnGatewaysClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -224,6 +225,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetVpnGatewaysClient implements BackgroundResource {
   private final TargetVpnGatewaysSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetVpnGatewaysSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetVpnGatewaysSettings.java
index d627ee62f27d..43334cb00b71 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetVpnGatewaysSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/TargetVpnGatewaysSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetVpnGatewaysSettings extends ClientSettings<TargetVpnGatewaysSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/UrlMapsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/UrlMapsClient.java
index 385892a5cc74..df9946aaadd2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/UrlMapsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/UrlMapsClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -294,6 +295,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UrlMapsClient implements BackgroundResource {
   private final UrlMapsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/UrlMapsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/UrlMapsSettings.java
index dc3620ca1268..fd2017f8b611 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/UrlMapsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/UrlMapsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UrlMapsSettings extends ClientSettings<UrlMapsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/VpnGatewaysClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/VpnGatewaysClient.java
index ed5ac3fdf9d9..669b67a5460d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/VpnGatewaysClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/VpnGatewaysClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -257,6 +258,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VpnGatewaysClient implements BackgroundResource {
   private final VpnGatewaysSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/VpnGatewaysSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/VpnGatewaysSettings.java
index 8f0bb7a4cf2f..bd19c57ea48c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/VpnGatewaysSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/VpnGatewaysSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VpnGatewaysSettings extends ClientSettings<VpnGatewaysSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/VpnTunnelsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/VpnTunnelsClient.java
index 3c70049fc6ab..5e976258a4dd 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/VpnTunnelsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/VpnTunnelsClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -221,6 +222,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VpnTunnelsClient implements BackgroundResource {
   private final VpnTunnelsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/VpnTunnelsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/VpnTunnelsSettings.java
index 96873d4c89ee..f531d3cfe8ff 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/VpnTunnelsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/VpnTunnelsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VpnTunnelsSettings extends ClientSettings<VpnTunnelsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/WireGroupsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/WireGroupsClient.java
index c3ca8d04b787..56f2ad07a682 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/WireGroupsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/WireGroupsClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -200,6 +201,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WireGroupsClient implements BackgroundResource {
   private final WireGroupsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/WireGroupsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/WireGroupsSettings.java
index 276b2bb6e0ca..23a90c17e57f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/WireGroupsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/WireGroupsSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WireGroupsSettings extends ClientSettings<WireGroupsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZoneOperationsClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZoneOperationsClient.java
index cceca9f7cdbc..59fb44fb3e3e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZoneOperationsClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZoneOperationsClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -179,6 +180,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ZoneOperationsClient implements BackgroundResource {
   private final ZoneOperationsSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZoneOperationsSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZoneOperationsSettings.java
index 1e733ed2144e..8d6447bc59c2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZoneOperationsSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZoneOperationsSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ZoneOperationsSettings extends ClientSettings<ZoneOperationsSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZoneVmExtensionPoliciesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZoneVmExtensionPoliciesClient.java
index e1251fb45303..01ccead68247 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZoneVmExtensionPoliciesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZoneVmExtensionPoliciesClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -205,6 +206,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ZoneVmExtensionPoliciesClient implements BackgroundResource {
   private final ZoneVmExtensionPoliciesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZoneVmExtensionPoliciesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZoneVmExtensionPoliciesSettings.java
index fcf5bea428d1..28824c88ca5e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZoneVmExtensionPoliciesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZoneVmExtensionPoliciesSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ZoneVmExtensionPoliciesSettings
     extends ClientSettings<ZoneVmExtensionPoliciesSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZonesClient.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZonesClient.java
index 63752f64e837..4b8e59d1b877 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZonesClient.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZonesClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -139,6 +140,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ZonesClient implements BackgroundResource {
   private final ZonesSettings settings;
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZonesSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZonesSettings.java
index d421bdb1a1ed..cd5a646b8a6c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZonesSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/ZonesSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ZonesSettings extends ClientSettings<ZonesSettings> {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AcceleratorTypesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AcceleratorTypesStub.java
index aaeb1bc459e3..d0fa3a23219b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AcceleratorTypesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AcceleratorTypesStub.java
@@ -28,6 +28,7 @@
 import com.google.cloud.compute.v1.GetAcceleratorTypeRequest;
 import com.google.cloud.compute.v1.ListAcceleratorTypesRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AcceleratorTypesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AcceleratorTypesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AcceleratorTypesStubSettings.java
index 2de8694e4c0e..ff125e07ac60 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AcceleratorTypesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AcceleratorTypesStubSettings.java
@@ -58,6 +58,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AcceleratorTypesStubSettings extends StubSettings<AcceleratorTypesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AddressesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AddressesStub.java
index 9fb906a07cc4..27dfff057a33 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AddressesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AddressesStub.java
@@ -36,6 +36,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsAddressRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AddressesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AddressesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AddressesStubSettings.java
index 5033696f998e..e9c564b86584 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AddressesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AddressesStubSettings.java
@@ -69,6 +69,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AddressesStubSettings extends StubSettings<AddressesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AdviceStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AdviceStub.java
index a7cf9a3d54d1..9c12980770ce 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AdviceStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AdviceStub.java
@@ -21,6 +21,7 @@
 import com.google.cloud.compute.v1.CalendarModeAdviceResponse;
 import com.google.cloud.compute.v1.CalendarModeAdviceRpcRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AdviceStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AdviceStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AdviceStubSettings.java
index ab214b2580bf..afe8a8f32c53 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AdviceStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AdviceStubSettings.java
@@ -42,6 +42,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AdviceStubSettings extends StubSettings<AdviceStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AutoscalersStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AutoscalersStub.java
index 8ce03a880184..d30f2f40d60d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AutoscalersStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AutoscalersStub.java
@@ -36,6 +36,7 @@
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import com.google.cloud.compute.v1.UpdateAutoscalerRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AutoscalersStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AutoscalersStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AutoscalersStubSettings.java
index 732ce480a221..8e0db3e1271e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AutoscalersStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/AutoscalersStubSettings.java
@@ -69,6 +69,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AutoscalersStubSettings extends StubSettings<AutoscalersStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/BackendBucketsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/BackendBucketsStub.java
index e81516483789..c37b55b2d809 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/BackendBucketsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/BackendBucketsStub.java
@@ -45,6 +45,7 @@
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import com.google.cloud.compute.v1.UpdateBackendBucketRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BackendBucketsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/BackendBucketsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/BackendBucketsStubSettings.java
index 83505af230f4..62a847ea9c59 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/BackendBucketsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/BackendBucketsStubSettings.java
@@ -78,6 +78,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BackendBucketsStubSettings extends StubSettings<BackendBucketsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/BackendServicesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/BackendServicesStub.java
index df7e325f5088..770327d0da0d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/BackendServicesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/BackendServicesStub.java
@@ -50,6 +50,7 @@
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import com.google.cloud.compute.v1.UpdateBackendServiceRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BackendServicesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/BackendServicesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/BackendServicesStubSettings.java
index b8f426c5cc55..be444caff877 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/BackendServicesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/BackendServicesStubSettings.java
@@ -83,6 +83,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -160,6 +161,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BackendServicesStubSettings extends StubSettings<BackendServicesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/CrossSiteNetworksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/CrossSiteNetworksStub.java
index 2cc5df1f72e7..957e06a365ca 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/CrossSiteNetworksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/CrossSiteNetworksStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.compute.v1.Operation;
 import com.google.cloud.compute.v1.PatchCrossSiteNetworkRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CrossSiteNetworksStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/CrossSiteNetworksStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/CrossSiteNetworksStubSettings.java
index a7080bf1b3ac..4e4b0a1a42aa 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/CrossSiteNetworksStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/CrossSiteNetworksStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -139,6 +140,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CrossSiteNetworksStubSettings extends StubSettings<CrossSiteNetworksStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/DiskTypesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/DiskTypesStub.java
index f4bdab298c26..42320168712b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/DiskTypesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/DiskTypesStub.java
@@ -28,6 +28,7 @@
 import com.google.cloud.compute.v1.GetDiskTypeRequest;
 import com.google.cloud.compute.v1.ListDiskTypesRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DiskTypesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/DiskTypesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/DiskTypesStubSettings.java
index c6d14d30c469..30f3794e92ca 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/DiskTypesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/DiskTypesStubSettings.java
@@ -58,6 +58,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DiskTypesStubSettings extends StubSettings<DiskTypesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/DisksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/DisksStub.java
index 315de836b823..1f7b47ec2329 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/DisksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/DisksStub.java
@@ -49,6 +49,7 @@
 import com.google.cloud.compute.v1.UpdateDiskRequest;
 import com.google.cloud.compute.v1.UpdateKmsKeyDiskRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DisksStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/DisksStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/DisksStubSettings.java
index 158a5d8c21bf..6ec3568075bf 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/DisksStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/DisksStubSettings.java
@@ -82,6 +82,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -157,6 +158,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DisksStubSettings extends StubSettings<DisksStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ExternalVpnGatewaysStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ExternalVpnGatewaysStub.java
index 28b7a8cbcfd2..af2b77467328 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ExternalVpnGatewaysStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ExternalVpnGatewaysStub.java
@@ -32,6 +32,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsExternalVpnGatewayRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ExternalVpnGatewaysStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ExternalVpnGatewaysStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ExternalVpnGatewaysStubSettings.java
index 52f3cb313cf3..d12c7815e5a3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ExternalVpnGatewaysStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ExternalVpnGatewaysStubSettings.java
@@ -63,6 +63,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ExternalVpnGatewaysStubSettings extends StubSettings<ExternalVpnGatewaysStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FirewallPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FirewallPoliciesStub.java
index a8ff241411a9..398a1d1cd8f6 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FirewallPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FirewallPoliciesStub.java
@@ -48,6 +48,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsFirewallPolicyRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FirewallPoliciesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FirewallPoliciesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FirewallPoliciesStubSettings.java
index 47ee99c482cf..bc3f5ad3eb88 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FirewallPoliciesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FirewallPoliciesStubSettings.java
@@ -79,6 +79,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FirewallPoliciesStubSettings extends StubSettings<FirewallPoliciesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FirewallsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FirewallsStub.java
index 9ad097593ab9..d4b67cbeb8b3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FirewallsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FirewallsStub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import com.google.cloud.compute.v1.UpdateFirewallRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FirewallsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FirewallsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FirewallsStubSettings.java
index c55a6ff96c88..cb2d1ad4b349 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FirewallsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FirewallsStubSettings.java
@@ -64,6 +64,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -139,6 +140,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FirewallsStubSettings extends StubSettings<FirewallsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ForwardingRulesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ForwardingRulesStub.java
index cf9d5a09505e..21c01d860e76 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ForwardingRulesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ForwardingRulesStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.compute.v1.SetLabelsForwardingRuleRequest;
 import com.google.cloud.compute.v1.SetTargetForwardingRuleRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ForwardingRulesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ForwardingRulesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ForwardingRulesStubSettings.java
index 497717170e0c..e359bf722c45 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ForwardingRulesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ForwardingRulesStubSettings.java
@@ -68,6 +68,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ForwardingRulesStubSettings extends StubSettings<ForwardingRulesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FutureReservationsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FutureReservationsStub.java
index 7f789b997487..0c46c84d496f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FutureReservationsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FutureReservationsStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.compute.v1.Operation;
 import com.google.cloud.compute.v1.UpdateFutureReservationRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FutureReservationsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FutureReservationsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FutureReservationsStubSettings.java
index 6b632a68f77a..701e86a01a24 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FutureReservationsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/FutureReservationsStubSettings.java
@@ -67,6 +67,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FutureReservationsStubSettings extends StubSettings<FutureReservationsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalAddressesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalAddressesStub.java
index 364ba4253fcc..5e2728f6653f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalAddressesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalAddressesStub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsGlobalAddressRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GlobalAddressesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalAddressesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalAddressesStubSettings.java
index 6d54bddd5d44..fc42f79f60ca 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalAddressesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalAddressesStubSettings.java
@@ -64,6 +64,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GlobalAddressesStubSettings extends StubSettings<GlobalAddressesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalForwardingRulesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalForwardingRulesStub.java
index 2693041cb6d5..a988ca7c5755 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalForwardingRulesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalForwardingRulesStub.java
@@ -32,6 +32,7 @@
 import com.google.cloud.compute.v1.SetLabelsGlobalForwardingRuleRequest;
 import com.google.cloud.compute.v1.SetTargetGlobalForwardingRuleRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GlobalForwardingRulesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalForwardingRulesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalForwardingRulesStubSettings.java
index 2db7ba11990c..50b02526a940 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalForwardingRulesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalForwardingRulesStubSettings.java
@@ -63,6 +63,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GlobalForwardingRulesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalNetworkEndpointGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalNetworkEndpointGroupsStub.java
index 39cd733b1665..28ac089e8457 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalNetworkEndpointGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalNetworkEndpointGroupsStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.compute.v1.NetworkEndpointGroupsListNetworkEndpoints;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GlobalNetworkEndpointGroupsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalNetworkEndpointGroupsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalNetworkEndpointGroupsStubSettings.java
index 6ac994e959a9..6adb6f326dbb 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalNetworkEndpointGroupsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalNetworkEndpointGroupsStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GlobalNetworkEndpointGroupsStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalOperationsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalOperationsStub.java
index 1c5ea2668278..fc14b7150665 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalOperationsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalOperationsStub.java
@@ -32,6 +32,7 @@
 import com.google.cloud.compute.v1.OperationList;
 import com.google.cloud.compute.v1.WaitGlobalOperationRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GlobalOperationsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalOperationsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalOperationsStubSettings.java
index 967ce4b79449..6f93e08de80a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalOperationsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalOperationsStubSettings.java
@@ -61,6 +61,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GlobalOperationsStubSettings extends StubSettings<GlobalOperationsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalOrganizationOperationsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalOrganizationOperationsStub.java
index 87bcca441739..153a2844aac9 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalOrganizationOperationsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalOrganizationOperationsStub.java
@@ -28,6 +28,7 @@
 import com.google.cloud.compute.v1.Operation;
 import com.google.cloud.compute.v1.OperationList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GlobalOrganizationOperationsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalOrganizationOperationsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalOrganizationOperationsStubSettings.java
index 886eecf2b710..76a0993a4990 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalOrganizationOperationsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalOrganizationOperationsStubSettings.java
@@ -55,6 +55,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GlobalOrganizationOperationsStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalPublicDelegatedPrefixesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalPublicDelegatedPrefixesStub.java
index 7f0976b89145..b0e8ba56af81 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalPublicDelegatedPrefixesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalPublicDelegatedPrefixesStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.compute.v1.PublicDelegatedPrefix;
 import com.google.cloud.compute.v1.PublicDelegatedPrefixList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GlobalPublicDelegatedPrefixesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalPublicDelegatedPrefixesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalPublicDelegatedPrefixesStubSettings.java
index f6935d52adb6..fcec65aef9e7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalPublicDelegatedPrefixesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalPublicDelegatedPrefixesStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -139,6 +140,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GlobalPublicDelegatedPrefixesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalVmExtensionPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalVmExtensionPoliciesStub.java
index 0e8310b5a526..291e78b80200 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalVmExtensionPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalVmExtensionPoliciesStub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.compute.v1.UpdateGlobalVmExtensionPolicyRequest;
 import com.google.cloud.compute.v1.VmExtensionPolicyAggregatedListResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GlobalVmExtensionPoliciesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalVmExtensionPoliciesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalVmExtensionPoliciesStubSettings.java
index d7b45c877dc5..5e387b0cb626 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalVmExtensionPoliciesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/GlobalVmExtensionPoliciesStubSettings.java
@@ -66,6 +66,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GlobalVmExtensionPoliciesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HealthChecksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HealthChecksStub.java
index f3d3aa76c075..c2d90e7516e1 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HealthChecksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HealthChecksStub.java
@@ -36,6 +36,7 @@
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import com.google.cloud.compute.v1.UpdateHealthCheckRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class HealthChecksStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HealthChecksStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HealthChecksStubSettings.java
index 75c06589a27c..da1807a05876 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HealthChecksStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HealthChecksStubSettings.java
@@ -69,6 +69,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class HealthChecksStubSettings extends StubSettings<HealthChecksStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAcceleratorTypesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAcceleratorTypesCallableFactory.java
index cd2860d21b72..317cca36c7a0 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAcceleratorTypesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAcceleratorTypesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAcceleratorTypesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAcceleratorTypesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAcceleratorTypesStub.java
index 2826ec9207fb..6a2cf3669a69 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAcceleratorTypesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAcceleratorTypesStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAcceleratorTypesStub extends AcceleratorTypesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAddressesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAddressesCallableFactory.java
index 101238b3ccff..2553bbdbd1b2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAddressesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAddressesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAddressesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAddressesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAddressesStub.java
index 738337b489cc..b4f05c6f7b62 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAddressesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAddressesStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAddressesStub extends AddressesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAdviceCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAdviceCallableFactory.java
index 1bd48e330401..e46bfc4de361 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAdviceCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAdviceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAdviceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAdviceStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAdviceStub.java
index ef88da08327a..a3a50ff5b81a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAdviceStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAdviceStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAdviceStub extends AdviceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAutoscalersCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAutoscalersCallableFactory.java
index 17f19214374a..a4a92527a87f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAutoscalersCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAutoscalersCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAutoscalersCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAutoscalersStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAutoscalersStub.java
index 62ca87c3ea5d..8c5e3ebe99fc 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAutoscalersStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonAutoscalersStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAutoscalersStub extends AutoscalersStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonBackendBucketsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonBackendBucketsCallableFactory.java
index 0aa9813568dc..b604e486b73f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonBackendBucketsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonBackendBucketsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBackendBucketsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonBackendBucketsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonBackendBucketsStub.java
index 9f5a3784c09c..e2a46d347d79 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonBackendBucketsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonBackendBucketsStub.java
@@ -65,6 +65,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBackendBucketsStub extends BackendBucketsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonBackendServicesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonBackendServicesCallableFactory.java
index e241117d919a..5f380c562727 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonBackendServicesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonBackendServicesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBackendServicesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonBackendServicesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonBackendServicesStub.java
index 9b8ae3335274..1abcdde90b02 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonBackendServicesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonBackendServicesStub.java
@@ -70,6 +70,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBackendServicesStub extends BackendServicesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonCrossSiteNetworksCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonCrossSiteNetworksCallableFactory.java
index 23ecb0bf51ec..429dd83b36c8 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonCrossSiteNetworksCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonCrossSiteNetworksCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCrossSiteNetworksCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonCrossSiteNetworksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonCrossSiteNetworksStub.java
index 36db71fe30b6..5049aeff14bc 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonCrossSiteNetworksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonCrossSiteNetworksStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCrossSiteNetworksStub extends CrossSiteNetworksStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonDiskTypesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonDiskTypesCallableFactory.java
index 735d3843da73..4a423da63986 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonDiskTypesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonDiskTypesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDiskTypesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonDiskTypesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonDiskTypesStub.java
index 704926c257b2..ae2b8615656a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonDiskTypesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonDiskTypesStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDiskTypesStub extends DiskTypesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonDisksCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonDisksCallableFactory.java
index 329c59062983..ce6aeb34e2bc 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonDisksCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonDisksCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDisksCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonDisksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonDisksStub.java
index 53d6d4178855..fdeba7779950 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonDisksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonDisksStub.java
@@ -69,6 +69,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -76,6 +77,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDisksStub extends DisksStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonExternalVpnGatewaysCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonExternalVpnGatewaysCallableFactory.java
index e6004c0025ba..be070606036d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonExternalVpnGatewaysCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonExternalVpnGatewaysCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonExternalVpnGatewaysCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonExternalVpnGatewaysStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonExternalVpnGatewaysStub.java
index 263f5c2d00cb..72d82fd46f19 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonExternalVpnGatewaysStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonExternalVpnGatewaysStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonExternalVpnGatewaysStub extends ExternalVpnGatewaysStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFirewallPoliciesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFirewallPoliciesCallableFactory.java
index ab60f47085bd..4880e4c262ba 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFirewallPoliciesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFirewallPoliciesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFirewallPoliciesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOrganizationOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFirewallPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFirewallPoliciesStub.java
index 357b04418cc0..61006102b6e5 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFirewallPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFirewallPoliciesStub.java
@@ -68,6 +68,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFirewallPoliciesStub extends FirewallPoliciesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFirewallsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFirewallsCallableFactory.java
index f0a8f068b8ea..a8a893ac1e43 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFirewallsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFirewallsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFirewallsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFirewallsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFirewallsStub.java
index 110acc81511b..d716db52d0cb 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFirewallsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFirewallsStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFirewallsStub extends FirewallsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonForwardingRulesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonForwardingRulesCallableFactory.java
index 4aa368abf781..d2458ec0ac25 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonForwardingRulesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonForwardingRulesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonForwardingRulesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonForwardingRulesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonForwardingRulesStub.java
index 6be755e9787c..66f3b9f63add 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonForwardingRulesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonForwardingRulesStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonForwardingRulesStub extends ForwardingRulesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFutureReservationsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFutureReservationsCallableFactory.java
index ea07254f5143..263c44933827 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFutureReservationsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFutureReservationsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFutureReservationsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFutureReservationsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFutureReservationsStub.java
index d7c201046b4f..72019c402145 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFutureReservationsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonFutureReservationsStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFutureReservationsStub extends FutureReservationsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalAddressesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalAddressesCallableFactory.java
index f503b1b7ca6a..e04565dad491 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalAddressesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalAddressesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGlobalAddressesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalAddressesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalAddressesStub.java
index 91d50240215a..ade068ff76f6 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalAddressesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalAddressesStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGlobalAddressesStub extends GlobalAddressesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalForwardingRulesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalForwardingRulesCallableFactory.java
index a116a6c0fc9c..db9868f9ecd6 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalForwardingRulesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalForwardingRulesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGlobalForwardingRulesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalForwardingRulesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalForwardingRulesStub.java
index 1e9da893a43d..f09fec35508b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalForwardingRulesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalForwardingRulesStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGlobalForwardingRulesStub extends GlobalForwardingRulesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalNetworkEndpointGroupsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalNetworkEndpointGroupsCallableFactory.java
index 15cc2e9e06c7..12a63a60cd50 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalNetworkEndpointGroupsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalNetworkEndpointGroupsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGlobalNetworkEndpointGroupsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalNetworkEndpointGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalNetworkEndpointGroupsStub.java
index 2361b8efecb9..460f7d44fadb 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalNetworkEndpointGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalNetworkEndpointGroupsStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGlobalNetworkEndpointGroupsStub extends GlobalNetworkEndpointGroupsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalOperationsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalOperationsCallableFactory.java
index 19fa753435ae..937380f24644 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalOperationsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalOperationsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGlobalOperationsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalOperationsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalOperationsStub.java
index ee9228e942d9..9197b6ec5adc 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalOperationsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalOperationsStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGlobalOperationsStub extends GlobalOperationsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalOrganizationOperationsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalOrganizationOperationsCallableFactory.java
index 5df60e3fec14..190bea1a74b3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalOrganizationOperationsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalOrganizationOperationsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGlobalOrganizationOperationsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalOrganizationOperationsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalOrganizationOperationsStub.java
index d8f769b4828f..c8404e634d69 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalOrganizationOperationsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalOrganizationOperationsStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGlobalOrganizationOperationsStub extends GlobalOrganizationOperationsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalPublicDelegatedPrefixesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalPublicDelegatedPrefixesCallableFactory.java
index 81a9c3bf0adf..ebef171d6d32 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalPublicDelegatedPrefixesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalPublicDelegatedPrefixesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGlobalPublicDelegatedPrefixesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalPublicDelegatedPrefixesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalPublicDelegatedPrefixesStub.java
index 9356639f20b9..d5fbef5d640d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalPublicDelegatedPrefixesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalPublicDelegatedPrefixesStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGlobalPublicDelegatedPrefixesStub extends GlobalPublicDelegatedPrefixesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalVmExtensionPoliciesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalVmExtensionPoliciesCallableFactory.java
index 33daa081cca2..8e914757d6fd 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalVmExtensionPoliciesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalVmExtensionPoliciesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGlobalVmExtensionPoliciesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalVmExtensionPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalVmExtensionPoliciesStub.java
index aa63353e6cd9..e739869203b2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalVmExtensionPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonGlobalVmExtensionPoliciesStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGlobalVmExtensionPoliciesStub extends GlobalVmExtensionPoliciesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonHealthChecksCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonHealthChecksCallableFactory.java
index e7bd5e5c3f33..e66bd260bd67 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonHealthChecksCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonHealthChecksCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonHealthChecksCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonHealthChecksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonHealthChecksStub.java
index 3416f1189d2b..1a3e7332cdf8 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonHealthChecksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonHealthChecksStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonHealthChecksStub extends HealthChecksStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonImageFamilyViewsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonImageFamilyViewsCallableFactory.java
index 58578f8fe072..084371d1cd68 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonImageFamilyViewsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonImageFamilyViewsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonImageFamilyViewsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonImageFamilyViewsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonImageFamilyViewsStub.java
index f9f464b0e0bb..e82935b214ff 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonImageFamilyViewsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonImageFamilyViewsStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonImageFamilyViewsStub extends ImageFamilyViewsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonImagesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonImagesCallableFactory.java
index a3702a6b065f..eb4b01a18de4 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonImagesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonImagesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonImagesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonImagesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonImagesStub.java
index 97fd72577f56..c82108b2ad89 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonImagesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonImagesStub.java
@@ -58,6 +58,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonImagesStub extends ImagesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupManagerResizeRequestsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupManagerResizeRequestsCallableFactory.java
index 3c43e2c8f961..ccbe32813fdd 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupManagerResizeRequestsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupManagerResizeRequestsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstanceGroupManagerResizeRequestsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupManagerResizeRequestsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupManagerResizeRequestsStub.java
index 5e827285d23c..9cc364cde3d2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupManagerResizeRequestsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupManagerResizeRequestsStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstanceGroupManagerResizeRequestsStub
     extends InstanceGroupManagerResizeRequestsStub {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupManagersCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupManagersCallableFactory.java
index b6e7b8daf753..86e22fe5281f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupManagersCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupManagersCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstanceGroupManagersCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupManagersStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupManagersStub.java
index 57442a370cfd..407310c448f3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupManagersStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupManagersStub.java
@@ -77,6 +77,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstanceGroupManagersStub extends InstanceGroupManagersStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupsCallableFactory.java
index 4aeae2b781a5..0e8e769c6df5 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstanceGroupsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupsStub.java
index 4d03e2a0a0be..2859f22a251e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceGroupsStub.java
@@ -60,6 +60,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstanceGroupsStub extends InstanceGroupsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceSettingsServiceCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceSettingsServiceCallableFactory.java
index d17efd4b8eda..a4a838381c45 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceSettingsServiceCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceSettingsServiceCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstanceSettingsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceSettingsServiceStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceSettingsServiceStub.java
index d4513101695b..3672ee10efc9 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceSettingsServiceStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceSettingsServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstanceSettingsServiceStub extends InstanceSettingsServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceTemplatesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceTemplatesCallableFactory.java
index 325e673d276e..c8b945fe91e8 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceTemplatesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceTemplatesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstanceTemplatesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceTemplatesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceTemplatesStub.java
index 175c61d282fc..80834d25d77a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceTemplatesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstanceTemplatesStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstanceTemplatesStub extends InstanceTemplatesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstancesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstancesCallableFactory.java
index 39e2810cdbd8..b36db1be59c2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstancesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstancesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstancesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstancesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstancesStub.java
index 085599037b8e..71cc8c333ce3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstancesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstancesStub.java
@@ -108,6 +108,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstancesStub extends InstancesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstantSnapshotGroupsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstantSnapshotGroupsCallableFactory.java
index ba9e41930155..0b9fc9d40e6a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstantSnapshotGroupsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstantSnapshotGroupsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstantSnapshotGroupsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstantSnapshotGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstantSnapshotGroupsStub.java
index e43534d80ac9..af08645ebc8a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstantSnapshotGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstantSnapshotGroupsStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstantSnapshotGroupsStub extends InstantSnapshotGroupsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstantSnapshotsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstantSnapshotsCallableFactory.java
index e404342f2089..18eff436877a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstantSnapshotsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstantSnapshotsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstantSnapshotsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstantSnapshotsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstantSnapshotsStub.java
index 0068ebb8638b..16d4df349dcb 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstantSnapshotsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInstantSnapshotsStub.java
@@ -58,6 +58,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstantSnapshotsStub extends InstantSnapshotsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectAttachmentGroupsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectAttachmentGroupsCallableFactory.java
index 1985c57e0851..44c588575a67 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectAttachmentGroupsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectAttachmentGroupsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInterconnectAttachmentGroupsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectAttachmentGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectAttachmentGroupsStub.java
index ad4951efe760..c02b87463135 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectAttachmentGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectAttachmentGroupsStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInterconnectAttachmentGroupsStub extends InterconnectAttachmentGroupsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectAttachmentsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectAttachmentsCallableFactory.java
index e7994a22de27..b2866eca2062 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectAttachmentsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectAttachmentsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInterconnectAttachmentsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectAttachmentsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectAttachmentsStub.java
index 1a01e14f5e8c..fde4beb9efec 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectAttachmentsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectAttachmentsStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInterconnectAttachmentsStub extends InterconnectAttachmentsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectGroupsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectGroupsCallableFactory.java
index debd07ebc2b8..082d093c4389 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectGroupsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectGroupsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInterconnectGroupsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectGroupsStub.java
index 6098403439c6..560c5ff40fdf 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectGroupsStub.java
@@ -58,6 +58,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInterconnectGroupsStub extends InterconnectGroupsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectLocationsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectLocationsCallableFactory.java
index 024b0843c48b..c0874d81bed0 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectLocationsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectLocationsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInterconnectLocationsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectLocationsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectLocationsStub.java
index 92698064bdaf..d70b15a1053b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectLocationsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectLocationsStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInterconnectLocationsStub extends InterconnectLocationsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectRemoteLocationsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectRemoteLocationsCallableFactory.java
index d20bfc942f47..9a60adc49075 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectRemoteLocationsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectRemoteLocationsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInterconnectRemoteLocationsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectRemoteLocationsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectRemoteLocationsStub.java
index 0248cd1b09d0..9990b30cda7e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectRemoteLocationsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectRemoteLocationsStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInterconnectRemoteLocationsStub extends InterconnectRemoteLocationsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectsCallableFactory.java
index 2e30882e8d18..e0f40fb8ef43 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInterconnectsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectsStub.java
index 0b7a06e7824e..bdb45e258207 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonInterconnectsStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInterconnectsStub extends InterconnectsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonLicenseCodesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonLicenseCodesCallableFactory.java
index a6119c1dcac0..b5ff43a719bf 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonLicenseCodesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonLicenseCodesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLicenseCodesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonLicenseCodesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonLicenseCodesStub.java
index c7e0d55ac107..e6267eb8cf16 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonLicenseCodesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonLicenseCodesStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLicenseCodesStub extends LicenseCodesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonLicensesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonLicensesCallableFactory.java
index 035f98e330e5..93bd0931f407 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonLicensesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonLicensesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLicensesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonLicensesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonLicensesStub.java
index 58ad8fb40030..f1925521c7d7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonLicensesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonLicensesStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLicensesStub extends LicensesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonMachineImagesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonMachineImagesCallableFactory.java
index 2c741e73a885..64a42b93691f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonMachineImagesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonMachineImagesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMachineImagesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonMachineImagesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonMachineImagesStub.java
index e1a2e088d754..1dcc86b9caf7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonMachineImagesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonMachineImagesStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMachineImagesStub extends MachineImagesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonMachineTypesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonMachineTypesCallableFactory.java
index 2659707b346b..5ddd534d08dd 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonMachineTypesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonMachineTypesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMachineTypesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonMachineTypesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonMachineTypesStub.java
index 91336676a6d0..3799e0e0971c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonMachineTypesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonMachineTypesStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMachineTypesStub extends MachineTypesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkAttachmentsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkAttachmentsCallableFactory.java
index 5bf291d71b72..34bfc043e87a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkAttachmentsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkAttachmentsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNetworkAttachmentsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkAttachmentsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkAttachmentsStub.java
index ffda18b7a17e..3ccc19d499c3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkAttachmentsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkAttachmentsStub.java
@@ -58,6 +58,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNetworkAttachmentsStub extends NetworkAttachmentsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkEdgeSecurityServicesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkEdgeSecurityServicesCallableFactory.java
index cffa93aa221c..4c90e28f9089 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkEdgeSecurityServicesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkEdgeSecurityServicesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNetworkEdgeSecurityServicesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkEdgeSecurityServicesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkEdgeSecurityServicesStub.java
index ae5e9a0e1e82..5b552c4c985e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkEdgeSecurityServicesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkEdgeSecurityServicesStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNetworkEdgeSecurityServicesStub extends NetworkEdgeSecurityServicesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkEndpointGroupsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkEndpointGroupsCallableFactory.java
index b4387abde9b0..9e9c73180d70 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkEndpointGroupsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkEndpointGroupsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNetworkEndpointGroupsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkEndpointGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkEndpointGroupsStub.java
index 7396fe44f6b6..dbbb37410791 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkEndpointGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkEndpointGroupsStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNetworkEndpointGroupsStub extends NetworkEndpointGroupsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkFirewallPoliciesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkFirewallPoliciesCallableFactory.java
index 8d63a37c1245..546c8665a27a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkFirewallPoliciesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkFirewallPoliciesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNetworkFirewallPoliciesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkFirewallPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkFirewallPoliciesStub.java
index 3cfb69d82e7c..1dc42c9566c3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkFirewallPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkFirewallPoliciesStub.java
@@ -72,6 +72,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -79,6 +80,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNetworkFirewallPoliciesStub extends NetworkFirewallPoliciesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkProfilesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkProfilesCallableFactory.java
index 7c9872c07f44..196b4d336662 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkProfilesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkProfilesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNetworkProfilesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkProfilesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkProfilesStub.java
index 6cbae2f6b633..edcfea0b4291 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkProfilesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworkProfilesStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNetworkProfilesStub extends NetworkProfilesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworksCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworksCallableFactory.java
index 204d716698d7..1f38c29f25d7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworksCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworksCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNetworksCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworksStub.java
index c38bf194d8fb..aa30b2b8f31c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNetworksStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNetworksStub extends NetworksStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeGroupsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeGroupsCallableFactory.java
index 1e06cc145eb7..c3fa31e9a746 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeGroupsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeGroupsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNodeGroupsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeGroupsStub.java
index 8c90e02b7a24..b797979196e2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeGroupsStub.java
@@ -66,6 +66,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNodeGroupsStub extends NodeGroupsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeTemplatesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeTemplatesCallableFactory.java
index 0febab680943..5815f2eb1615 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeTemplatesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeTemplatesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNodeTemplatesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeTemplatesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeTemplatesStub.java
index b389d04ef74b..52e475aa8b13 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeTemplatesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeTemplatesStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNodeTemplatesStub extends NodeTemplatesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeTypesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeTypesCallableFactory.java
index d19c02e9f187..32b67570dd61 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeTypesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeTypesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNodeTypesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeTypesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeTypesStub.java
index 89b75d9ef50f..b8aba15163e2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeTypesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonNodeTypesStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNodeTypesStub extends NodeTypesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonOrganizationSecurityPoliciesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonOrganizationSecurityPoliciesCallableFactory.java
index 5e811a9aa20c..e1586fef4beb 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonOrganizationSecurityPoliciesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonOrganizationSecurityPoliciesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOrganizationSecurityPoliciesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOrganizationOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonOrganizationSecurityPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonOrganizationSecurityPoliciesStub.java
index 14eb46fcab85..f0adc653cdd4 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonOrganizationSecurityPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonOrganizationSecurityPoliciesStub.java
@@ -65,6 +65,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOrganizationSecurityPoliciesStub extends OrganizationSecurityPoliciesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPacketMirroringsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPacketMirroringsCallableFactory.java
index 85cd755a067e..8587e7bef910 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPacketMirroringsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPacketMirroringsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPacketMirroringsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPacketMirroringsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPacketMirroringsStub.java
index 315c4c5c7d90..ca58e95b4ebf 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPacketMirroringsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPacketMirroringsStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPacketMirroringsStub extends PacketMirroringsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPreviewFeaturesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPreviewFeaturesCallableFactory.java
index c4c02e8eb678..cb315d33aead 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPreviewFeaturesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPreviewFeaturesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPreviewFeaturesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPreviewFeaturesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPreviewFeaturesStub.java
index 2b3c4a47a069..13d02e2ec25a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPreviewFeaturesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPreviewFeaturesStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPreviewFeaturesStub extends PreviewFeaturesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonProjectsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonProjectsCallableFactory.java
index ca71f34192f0..806d27e038d9 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonProjectsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonProjectsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProjectsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonProjectsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonProjectsStub.java
index cab655e23bce..33108f280b18 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonProjectsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonProjectsStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProjectsStub extends ProjectsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPublicAdvertisedPrefixesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPublicAdvertisedPrefixesCallableFactory.java
index cbdf318f2d1d..e178daa4fe62 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPublicAdvertisedPrefixesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPublicAdvertisedPrefixesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPublicAdvertisedPrefixesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPublicAdvertisedPrefixesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPublicAdvertisedPrefixesStub.java
index 52b68bee44c4..43d6bc880b64 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPublicAdvertisedPrefixesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPublicAdvertisedPrefixesStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPublicAdvertisedPrefixesStub extends PublicAdvertisedPrefixesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPublicDelegatedPrefixesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPublicDelegatedPrefixesCallableFactory.java
index 81eed039a735..7a2be2c25500 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPublicDelegatedPrefixesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPublicDelegatedPrefixesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPublicDelegatedPrefixesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPublicDelegatedPrefixesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPublicDelegatedPrefixesStub.java
index f6ddd1cda7f4..44fe4e6caa95 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPublicDelegatedPrefixesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonPublicDelegatedPrefixesStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPublicDelegatedPrefixesStub extends PublicDelegatedPrefixesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionAutoscalersCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionAutoscalersCallableFactory.java
index 843788b61480..d94f18fda764 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionAutoscalersCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionAutoscalersCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionAutoscalersCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionAutoscalersStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionAutoscalersStub.java
index eece2a21c1db..fda4888ab583 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionAutoscalersStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionAutoscalersStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionAutoscalersStub extends RegionAutoscalersStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionBackendBucketsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionBackendBucketsCallableFactory.java
index d4421ede44a4..8b35fa184ac7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionBackendBucketsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionBackendBucketsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionBackendBucketsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionBackendBucketsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionBackendBucketsStub.java
index dc3217c916db..ea1b5ebd2c5a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionBackendBucketsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionBackendBucketsStub.java
@@ -58,6 +58,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionBackendBucketsStub extends RegionBackendBucketsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionBackendServicesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionBackendServicesCallableFactory.java
index 511ca6842ff4..abeb954629f0 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionBackendServicesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionBackendServicesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionBackendServicesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionBackendServicesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionBackendServicesStub.java
index 8d1bb7336a80..9966036b1ff0 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionBackendServicesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionBackendServicesStub.java
@@ -62,6 +62,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionBackendServicesStub extends RegionBackendServicesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionCommitmentsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionCommitmentsCallableFactory.java
index f4c63607d732..7bf8aabada0c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionCommitmentsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionCommitmentsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionCommitmentsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionCommitmentsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionCommitmentsStub.java
index ab638cd8beee..194527c588db 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionCommitmentsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionCommitmentsStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionCommitmentsStub extends RegionCommitmentsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionCompositeHealthChecksCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionCompositeHealthChecksCallableFactory.java
index 141f91a89c0a..13fe7757b12b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionCompositeHealthChecksCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionCompositeHealthChecksCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionCompositeHealthChecksCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionCompositeHealthChecksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionCompositeHealthChecksStub.java
index 67ac2a3aced4..6ef32a906e4f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionCompositeHealthChecksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionCompositeHealthChecksStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionCompositeHealthChecksStub extends RegionCompositeHealthChecksStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionDiskTypesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionDiskTypesCallableFactory.java
index dc8941e0fcbc..961b552e5b40 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionDiskTypesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionDiskTypesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionDiskTypesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionDiskTypesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionDiskTypesStub.java
index 0597e0cf62ce..4dcc0eb274df 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionDiskTypesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionDiskTypesStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionDiskTypesStub extends RegionDiskTypesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionDisksCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionDisksCallableFactory.java
index 7434cedd693e..4df8afbff483 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionDisksCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionDisksCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionDisksCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionDisksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionDisksStub.java
index fd4cd8d8d4a1..f98175a97e0c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionDisksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionDisksStub.java
@@ -65,6 +65,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionDisksStub extends RegionDisksStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthAggregationPoliciesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthAggregationPoliciesCallableFactory.java
index baa6c01dca27..9ae219c5682c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthAggregationPoliciesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthAggregationPoliciesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionHealthAggregationPoliciesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthAggregationPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthAggregationPoliciesStub.java
index e41ab12885a2..c46a0b082d29 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthAggregationPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthAggregationPoliciesStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionHealthAggregationPoliciesStub
     extends RegionHealthAggregationPoliciesStub {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthCheckServicesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthCheckServicesCallableFactory.java
index dc99efe53894..a17bf35240ae 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthCheckServicesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthCheckServicesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionHealthCheckServicesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthCheckServicesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthCheckServicesStub.java
index 649e2d9b56af..ffa4cd331595 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthCheckServicesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthCheckServicesStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionHealthCheckServicesStub extends RegionHealthCheckServicesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthChecksCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthChecksCallableFactory.java
index 106485403871..28697d4de328 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthChecksCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthChecksCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionHealthChecksCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthChecksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthChecksStub.java
index abbcea3b16b8..799a82ea45ca 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthChecksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthChecksStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionHealthChecksStub extends RegionHealthChecksStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthSourcesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthSourcesCallableFactory.java
index f60e9dc2a8af..d1eb4259e6da 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthSourcesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthSourcesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionHealthSourcesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthSourcesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthSourcesStub.java
index 4b24acb74e03..4d58c46c1f85 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthSourcesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionHealthSourcesStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionHealthSourcesStub extends RegionHealthSourcesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupManagerResizeRequestsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupManagerResizeRequestsCallableFactory.java
index 1f2207f0311c..589efaefe30a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupManagerResizeRequestsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupManagerResizeRequestsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionInstanceGroupManagerResizeRequestsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupManagerResizeRequestsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupManagerResizeRequestsStub.java
index 803addc378a7..8fcd44f268a0 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupManagerResizeRequestsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupManagerResizeRequestsStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionInstanceGroupManagerResizeRequestsStub
     extends RegionInstanceGroupManagerResizeRequestsStub {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupManagersCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupManagersCallableFactory.java
index a5f64169e711..82377fb84793 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupManagersCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupManagersCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionInstanceGroupManagersCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupManagersStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupManagersStub.java
index 465d80c69bcd..600eba0ea9fb 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupManagersStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupManagersStub.java
@@ -74,6 +74,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionInstanceGroupManagersStub extends RegionInstanceGroupManagersStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupsCallableFactory.java
index 62fdc3f89b83..01ca4f1e1c4d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionInstanceGroupsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupsStub.java
index 85d44587980b..4718def59fc2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceGroupsStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionInstanceGroupsStub extends RegionInstanceGroupsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceTemplatesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceTemplatesCallableFactory.java
index b53081722841..7b5d913af029 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceTemplatesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceTemplatesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionInstanceTemplatesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceTemplatesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceTemplatesStub.java
index 25d18f4d3a4a..72e76e56f7c5 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceTemplatesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstanceTemplatesStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionInstanceTemplatesStub extends RegionInstanceTemplatesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstancesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstancesCallableFactory.java
index a67721b6e7db..2365af758f7f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstancesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstancesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionInstancesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstancesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstancesStub.java
index b17f27feac2a..6239b98ecd5a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstancesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstancesStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionInstancesStub extends RegionInstancesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstantSnapshotGroupsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstantSnapshotGroupsCallableFactory.java
index 8daecf3453dc..ef9ae59f8cc7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstantSnapshotGroupsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstantSnapshotGroupsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionInstantSnapshotGroupsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstantSnapshotGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstantSnapshotGroupsStub.java
index 3e666c1431be..91013928554e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstantSnapshotGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstantSnapshotGroupsStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionInstantSnapshotGroupsStub extends RegionInstantSnapshotGroupsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstantSnapshotsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstantSnapshotsCallableFactory.java
index 74f3128a6426..5378ad8e5ffc 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstantSnapshotsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstantSnapshotsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionInstantSnapshotsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstantSnapshotsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstantSnapshotsStub.java
index 833a5c4b8b91..7a575afcbd5f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstantSnapshotsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionInstantSnapshotsStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionInstantSnapshotsStub extends RegionInstantSnapshotsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNetworkEndpointGroupsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNetworkEndpointGroupsCallableFactory.java
index 2d6c21260948..7334165b271b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNetworkEndpointGroupsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNetworkEndpointGroupsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionNetworkEndpointGroupsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNetworkEndpointGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNetworkEndpointGroupsStub.java
index d2dac608bc74..a8d14d48cd3e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNetworkEndpointGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNetworkEndpointGroupsStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionNetworkEndpointGroupsStub extends RegionNetworkEndpointGroupsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNetworkFirewallPoliciesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNetworkFirewallPoliciesCallableFactory.java
index 0d3f0bbfcc39..d4d8f1952f93 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNetworkFirewallPoliciesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNetworkFirewallPoliciesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionNetworkFirewallPoliciesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNetworkFirewallPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNetworkFirewallPoliciesStub.java
index b20e713e1dec..f5ff9df2b86f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNetworkFirewallPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNetworkFirewallPoliciesStub.java
@@ -67,6 +67,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionNetworkFirewallPoliciesStub extends RegionNetworkFirewallPoliciesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNotificationEndpointsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNotificationEndpointsCallableFactory.java
index 292196bb39c7..367edaf02d12 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNotificationEndpointsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNotificationEndpointsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionNotificationEndpointsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNotificationEndpointsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNotificationEndpointsStub.java
index dd7333e1f1a4..65c483f4399c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNotificationEndpointsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionNotificationEndpointsStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionNotificationEndpointsStub extends RegionNotificationEndpointsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionOperationsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionOperationsCallableFactory.java
index 73686cc1a8ed..7c740aa7e20a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionOperationsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionOperationsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionOperationsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionOperationsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionOperationsStub.java
index 0f6ce897fa99..436449594c8a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionOperationsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionOperationsStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionOperationsStub extends RegionOperationsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSecurityPoliciesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSecurityPoliciesCallableFactory.java
index 24a269565c86..7eddf0c38ddb 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSecurityPoliciesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSecurityPoliciesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionSecurityPoliciesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSecurityPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSecurityPoliciesStub.java
index 0b76d6965391..a831d47c942d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSecurityPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSecurityPoliciesStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionSecurityPoliciesStub extends RegionSecurityPoliciesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSnapshotSettingsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSnapshotSettingsCallableFactory.java
index 432e56e05470..4b3eaadf8b0a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSnapshotSettingsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSnapshotSettingsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionSnapshotSettingsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSnapshotSettingsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSnapshotSettingsStub.java
index 144a3580fec5..35d3a6b94206 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSnapshotSettingsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSnapshotSettingsStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionSnapshotSettingsStub extends RegionSnapshotSettingsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSnapshotsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSnapshotsCallableFactory.java
index 34765d8526f3..36ef363a73d8 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSnapshotsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSnapshotsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionSnapshotsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSnapshotsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSnapshotsStub.java
index 9739b85d1d46..0cf3e31fee2c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSnapshotsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSnapshotsStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionSnapshotsStub extends RegionSnapshotsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSslCertificatesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSslCertificatesCallableFactory.java
index 5d4bd212fd31..e3851bbdcc69 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSslCertificatesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSslCertificatesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionSslCertificatesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSslCertificatesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSslCertificatesStub.java
index 0dab0eee31f8..5ba30aa02db3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSslCertificatesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSslCertificatesStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionSslCertificatesStub extends RegionSslCertificatesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSslPoliciesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSslPoliciesCallableFactory.java
index 5a912b2a7171..368785eb12f6 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSslPoliciesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSslPoliciesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionSslPoliciesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSslPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSslPoliciesStub.java
index b541fadf27ff..f3fab5b99b78 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSslPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionSslPoliciesStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionSslPoliciesStub extends RegionSslPoliciesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetHttpProxiesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetHttpProxiesCallableFactory.java
index 52cf0bade23c..e337736491c2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetHttpProxiesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetHttpProxiesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionTargetHttpProxiesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetHttpProxiesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetHttpProxiesStub.java
index 2234e84cde2d..f2cb06cf24a7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetHttpProxiesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetHttpProxiesStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionTargetHttpProxiesStub extends RegionTargetHttpProxiesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetHttpsProxiesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetHttpsProxiesCallableFactory.java
index 760ad07d6c0b..a437926fe3d0 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetHttpsProxiesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetHttpsProxiesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionTargetHttpsProxiesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetHttpsProxiesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetHttpsProxiesStub.java
index 0b304f7d62cb..3b3d731692c3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetHttpsProxiesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetHttpsProxiesStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionTargetHttpsProxiesStub extends RegionTargetHttpsProxiesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetTcpProxiesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetTcpProxiesCallableFactory.java
index 9b6fa8d645c7..0f8bff16796d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetTcpProxiesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetTcpProxiesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionTargetTcpProxiesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetTcpProxiesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetTcpProxiesStub.java
index a7c7b1cb211e..05bba4bb9dfc 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetTcpProxiesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionTargetTcpProxiesStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionTargetTcpProxiesStub extends RegionTargetTcpProxiesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionUrlMapsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionUrlMapsCallableFactory.java
index e30cbf0ab9be..bbf1cda33fd2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionUrlMapsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionUrlMapsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionUrlMapsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionUrlMapsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionUrlMapsStub.java
index f75a1883c983..ab231835c347 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionUrlMapsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionUrlMapsStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionUrlMapsStub extends RegionUrlMapsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionZonesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionZonesCallableFactory.java
index 2000e4216b20..6fd2a7b3c0c3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionZonesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionZonesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionZonesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionZonesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionZonesStub.java
index 0eff1cf845b6..df9a6ab20a6e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionZonesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionZonesStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionZonesStub extends RegionZonesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionsCallableFactory.java
index 20e47c168035..bb56c9c561d6 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionsStub.java
index d23637de5bc2..86fc11445ca1 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRegionsStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionsStub extends RegionsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationBlocksCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationBlocksCallableFactory.java
index dfdd33e8626d..52e5bc77f8b8 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationBlocksCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationBlocksCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonReservationBlocksCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationBlocksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationBlocksStub.java
index 291c48941937..621adb4b15d5 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationBlocksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationBlocksStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonReservationBlocksStub extends ReservationBlocksStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationSlotsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationSlotsCallableFactory.java
index e650ed15526d..d6767637579c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationSlotsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationSlotsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonReservationSlotsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationSlotsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationSlotsStub.java
index 20374145d67c..1a6eebf4ea88 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationSlotsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationSlotsStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonReservationSlotsStub extends ReservationSlotsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationSubBlocksCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationSubBlocksCallableFactory.java
index 6be50e5e053e..fab192c20c1b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationSubBlocksCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationSubBlocksCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonReservationSubBlocksCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationSubBlocksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationSubBlocksStub.java
index 408255a77ae7..c34f8a29cc76 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationSubBlocksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationSubBlocksStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonReservationSubBlocksStub extends ReservationSubBlocksStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationsCallableFactory.java
index 33616224103b..952203ba8b56 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonReservationsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationsStub.java
index 2df6455b9c78..4e1fc9007eb6 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonReservationsStub.java
@@ -60,6 +60,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonReservationsStub extends ReservationsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonResourcePoliciesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonResourcePoliciesCallableFactory.java
index 4c7d140ac15e..94618433efb7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonResourcePoliciesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonResourcePoliciesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonResourcePoliciesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonResourcePoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonResourcePoliciesStub.java
index a2c82fdc5798..77c503bab665 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonResourcePoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonResourcePoliciesStub.java
@@ -58,6 +58,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonResourcePoliciesStub extends ResourcePoliciesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRolloutPlansCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRolloutPlansCallableFactory.java
index 1f594185b8a7..26123771a36e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRolloutPlansCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRolloutPlansCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRolloutPlansCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRolloutPlansStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRolloutPlansStub.java
index c57374b9697d..a4c0bc0fbb66 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRolloutPlansStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRolloutPlansStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRolloutPlansStub extends RolloutPlansStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRolloutsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRolloutsCallableFactory.java
index 423df39a698d..e7c2255bdfbd 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRolloutsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRolloutsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRolloutsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRolloutsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRolloutsStub.java
index a51be6ad5a11..7a711cedcb1b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRolloutsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRolloutsStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRolloutsStub extends RolloutsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRoutersCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRoutersCallableFactory.java
index bd5f3adebf81..89aa303b39e3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRoutersCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRoutersCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRoutersCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRoutersStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRoutersStub.java
index 59d9dba9b69a..778c839550a3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRoutersStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRoutersStub.java
@@ -74,6 +74,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRoutersStub extends RoutersStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRoutesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRoutesCallableFactory.java
index 3c59d84a4512..9f0216467c66 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRoutesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRoutesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRoutesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRoutesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRoutesStub.java
index f8cea01abf7e..66c0e2998340 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRoutesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonRoutesStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRoutesStub extends RoutesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSecurityPoliciesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSecurityPoliciesCallableFactory.java
index db71e06a5a54..5e98634426c6 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSecurityPoliciesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSecurityPoliciesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSecurityPoliciesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSecurityPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSecurityPoliciesStub.java
index 8776afaad6d8..4b9e91559bb5 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSecurityPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSecurityPoliciesStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSecurityPoliciesStub extends SecurityPoliciesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonServiceAttachmentsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonServiceAttachmentsCallableFactory.java
index ffc38b53db60..979ab9aa5777 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonServiceAttachmentsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonServiceAttachmentsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServiceAttachmentsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonServiceAttachmentsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonServiceAttachmentsStub.java
index beaac11b46f9..c2f7a45237b2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonServiceAttachmentsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonServiceAttachmentsStub.java
@@ -58,6 +58,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServiceAttachmentsStub extends ServiceAttachmentsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSnapshotSettingsServiceCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSnapshotSettingsServiceCallableFactory.java
index 929f60319d26..6d2712c6abd1 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSnapshotSettingsServiceCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSnapshotSettingsServiceCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSnapshotSettingsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSnapshotSettingsServiceStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSnapshotSettingsServiceStub.java
index 77b1128c435a..5f7ab3a7c5a2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSnapshotSettingsServiceStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSnapshotSettingsServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSnapshotSettingsServiceStub extends SnapshotSettingsServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSnapshotsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSnapshotsCallableFactory.java
index 96f7ce47d522..aad2f1d249e1 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSnapshotsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSnapshotsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSnapshotsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSnapshotsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSnapshotsStub.java
index a9380d0c5c56..0c15a80d9cca 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSnapshotsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSnapshotsStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSnapshotsStub extends SnapshotsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSslCertificatesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSslCertificatesCallableFactory.java
index 3a490391d2fc..cfd98cefb6e2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSslCertificatesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSslCertificatesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSslCertificatesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSslCertificatesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSslCertificatesStub.java
index f4c9db15826d..7ab74221e79e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSslCertificatesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSslCertificatesStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSslCertificatesStub extends SslCertificatesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSslPoliciesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSslPoliciesCallableFactory.java
index 7fcf6aee8c73..d33a9973e98c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSslPoliciesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSslPoliciesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSslPoliciesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSslPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSslPoliciesStub.java
index 2820c3848f74..f98367ba81a9 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSslPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSslPoliciesStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSslPoliciesStub extends SslPoliciesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonStoragePoolTypesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonStoragePoolTypesCallableFactory.java
index dd6ef6e84904..e7e1ff4dfefc 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonStoragePoolTypesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonStoragePoolTypesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonStoragePoolTypesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonStoragePoolTypesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonStoragePoolTypesStub.java
index 45fef98a9651..b385ae4ca19f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonStoragePoolTypesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonStoragePoolTypesStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonStoragePoolTypesStub extends StoragePoolTypesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonStoragePoolsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonStoragePoolsCallableFactory.java
index 8de53ae5fa93..f1942d3e6fa7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonStoragePoolsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonStoragePoolsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonStoragePoolsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonStoragePoolsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonStoragePoolsStub.java
index 1342f4a5972b..b1bbfbbe1a4c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonStoragePoolsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonStoragePoolsStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonStoragePoolsStub extends StoragePoolsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSubnetworksCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSubnetworksCallableFactory.java
index 01a8c98cb520..c2b4a16e9d8e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSubnetworksCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSubnetworksCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSubnetworksCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSubnetworksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSubnetworksStub.java
index f29644661551..6b92218e2400 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSubnetworksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonSubnetworksStub.java
@@ -63,6 +63,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSubnetworksStub extends SubnetworksStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetGrpcProxiesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetGrpcProxiesCallableFactory.java
index 7db848cfad79..55beb5eae9fb 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetGrpcProxiesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetGrpcProxiesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTargetGrpcProxiesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetGrpcProxiesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetGrpcProxiesStub.java
index 884006bc3297..b4772e5721df 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetGrpcProxiesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetGrpcProxiesStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTargetGrpcProxiesStub extends TargetGrpcProxiesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetHttpProxiesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetHttpProxiesCallableFactory.java
index 8454157cc428..7dfeeeb5d516 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetHttpProxiesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetHttpProxiesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTargetHttpProxiesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetHttpProxiesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetHttpProxiesStub.java
index 05e93162403a..fc58773b32a9 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetHttpProxiesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetHttpProxiesStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTargetHttpProxiesStub extends TargetHttpProxiesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetHttpsProxiesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetHttpsProxiesCallableFactory.java
index 65b075788b31..c42962728fc9 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetHttpsProxiesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetHttpsProxiesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTargetHttpsProxiesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetHttpsProxiesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetHttpsProxiesStub.java
index 160ed38ba861..95daeb310183 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetHttpsProxiesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetHttpsProxiesStub.java
@@ -58,6 +58,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTargetHttpsProxiesStub extends TargetHttpsProxiesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetInstancesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetInstancesCallableFactory.java
index af780ded3daa..e98a84d29c86 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetInstancesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetInstancesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTargetInstancesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetInstancesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetInstancesStub.java
index d9d5b678187f..392ab715bed9 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetInstancesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetInstancesStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTargetInstancesStub extends TargetInstancesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetPoolsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetPoolsCallableFactory.java
index 74605ed5cb5b..e04ef50c924c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetPoolsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetPoolsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTargetPoolsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetPoolsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetPoolsStub.java
index c5e34c42524f..712207a2c522 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetPoolsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetPoolsStub.java
@@ -62,6 +62,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTargetPoolsStub extends TargetPoolsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetSslProxiesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetSslProxiesCallableFactory.java
index c0eef9f39af8..76fe8d3656b2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetSslProxiesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetSslProxiesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTargetSslProxiesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetSslProxiesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetSslProxiesStub.java
index 4b579b19ab55..16164753b5f1 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetSslProxiesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetSslProxiesStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTargetSslProxiesStub extends TargetSslProxiesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetTcpProxiesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetTcpProxiesCallableFactory.java
index d9d823675452..26ecbc82e427 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetTcpProxiesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetTcpProxiesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTargetTcpProxiesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetTcpProxiesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetTcpProxiesStub.java
index 7dadd651311e..1bd7c4f6db29 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetTcpProxiesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetTcpProxiesStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTargetTcpProxiesStub extends TargetTcpProxiesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetVpnGatewaysCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetVpnGatewaysCallableFactory.java
index d6e67685108a..ba054d7c494d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetVpnGatewaysCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetVpnGatewaysCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTargetVpnGatewaysCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetVpnGatewaysStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetVpnGatewaysStub.java
index 9a04e3b5520e..ef0c2812d8d0 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetVpnGatewaysStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonTargetVpnGatewaysStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTargetVpnGatewaysStub extends TargetVpnGatewaysStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonUrlMapsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonUrlMapsCallableFactory.java
index e852c181370c..db63ed6f9ffd 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonUrlMapsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonUrlMapsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonUrlMapsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonUrlMapsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonUrlMapsStub.java
index 59f17179801f..f73aabddd5c7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonUrlMapsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonUrlMapsStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonUrlMapsStub extends UrlMapsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonVpnGatewaysCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonVpnGatewaysCallableFactory.java
index 2700fbf3ec58..611d4a38204e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonVpnGatewaysCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonVpnGatewaysCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVpnGatewaysCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonVpnGatewaysStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonVpnGatewaysStub.java
index 8393bba72cd5..8355ee50b92d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonVpnGatewaysStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonVpnGatewaysStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVpnGatewaysStub extends VpnGatewaysStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonVpnTunnelsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonVpnTunnelsCallableFactory.java
index c157019a06ae..c5e87f7a66d3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonVpnTunnelsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonVpnTunnelsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVpnTunnelsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, RegionOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonVpnTunnelsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonVpnTunnelsStub.java
index b7a087f4fdc6..c501ce0d2c14 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonVpnTunnelsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonVpnTunnelsStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVpnTunnelsStub extends VpnTunnelsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonWireGroupsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonWireGroupsCallableFactory.java
index ba0a34934fc2..8e45d5860cc3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonWireGroupsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonWireGroupsCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWireGroupsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, GlobalOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonWireGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonWireGroupsStub.java
index 147ccfc8a123..eabdb4f35f87 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonWireGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonWireGroupsStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWireGroupsStub extends WireGroupsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZoneOperationsCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZoneOperationsCallableFactory.java
index 6c28082ff290..786ef67f9820 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZoneOperationsCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZoneOperationsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonZoneOperationsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZoneOperationsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZoneOperationsStub.java
index 494c3a4665c7..b8acabf5aa46 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZoneOperationsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZoneOperationsStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonZoneOperationsStub extends ZoneOperationsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZoneVmExtensionPoliciesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZoneVmExtensionPoliciesCallableFactory.java
index 508751ad59fd..4dbb3d3b34d7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZoneVmExtensionPoliciesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZoneVmExtensionPoliciesCallableFactory.java
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonZoneVmExtensionPoliciesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, ZoneOperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZoneVmExtensionPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZoneVmExtensionPoliciesStub.java
index 564e6643b283..14747e6f55ea 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZoneVmExtensionPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZoneVmExtensionPoliciesStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonZoneVmExtensionPoliciesStub extends ZoneVmExtensionPoliciesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZonesCallableFactory.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZonesCallableFactory.java
index fd12a2017183..acd2e469f5f7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZonesCallableFactory.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZonesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonZonesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZonesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZonesStub.java
index b62cf2ac3092..286f136f2ec4 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZonesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/HttpJsonZonesStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonZonesStub extends ZonesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ImageFamilyViewsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ImageFamilyViewsStub.java
index dd0de602fe66..bc0abdd2fcec 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ImageFamilyViewsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ImageFamilyViewsStub.java
@@ -21,6 +21,7 @@
 import com.google.cloud.compute.v1.GetImageFamilyViewRequest;
 import com.google.cloud.compute.v1.ImageFamilyView;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ImageFamilyViewsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ImageFamilyViewsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ImageFamilyViewsStubSettings.java
index 51e99264e03b..06f0fb041701 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ImageFamilyViewsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ImageFamilyViewsStubSettings.java
@@ -42,6 +42,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -93,6 +94,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ImageFamilyViewsStubSettings extends StubSettings<ImageFamilyViewsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ImagesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ImagesStub.java
index 2183bb90ad7a..f6c35335ce3a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ImagesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ImagesStub.java
@@ -38,6 +38,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsImageRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ImagesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ImagesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ImagesStubSettings.java
index ee82a0772c00..b2a0214e39d7 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ImagesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ImagesStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ImagesStubSettings extends StubSettings<ImagesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupManagerResizeRequestsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupManagerResizeRequestsStub.java
index 07f57410a845..01a2e812a0b5 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupManagerResizeRequestsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupManagerResizeRequestsStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.compute.v1.ListInstanceGroupManagerResizeRequestsRequest;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InstanceGroupManagerResizeRequestsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupManagerResizeRequestsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupManagerResizeRequestsStubSettings.java
index e59462136782..c0427f59642a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupManagerResizeRequestsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupManagerResizeRequestsStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InstanceGroupManagerResizeRequestsStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupManagersStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupManagersStub.java
index 17f9205fe7e3..49815b09c068 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupManagersStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupManagersStub.java
@@ -57,6 +57,7 @@
 import com.google.cloud.compute.v1.SuspendInstancesInstanceGroupManagerRequest;
 import com.google.cloud.compute.v1.UpdatePerInstanceConfigsInstanceGroupManagerRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InstanceGroupManagersStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupManagersStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupManagersStubSettings.java
index a1d52b68a875..240691c07936 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupManagersStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupManagersStubSettings.java
@@ -93,6 +93,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -171,6 +172,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InstanceGroupManagersStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupsStub.java
index 458b34059ea0..af24f80f058c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupsStub.java
@@ -40,6 +40,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsInstanceGroupRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InstanceGroupsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupsStubSettings.java
index a9ec150b4fb4..407d30e9ac32 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceGroupsStubSettings.java
@@ -74,6 +74,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InstanceGroupsStubSettings extends StubSettings<InstanceGroupsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceSettingsServiceStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceSettingsServiceStub.java
index d66da240602e..d8e666983906 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceSettingsServiceStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceSettingsServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.cloud.compute.v1.Operation;
 import com.google.cloud.compute.v1.PatchInstanceSettingRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InstanceSettingsServiceStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceSettingsServiceStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceSettingsServiceStubSettings.java
index d58f1319c6c9..0449faa1fa65 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceSettingsServiceStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceSettingsServiceStubSettings.java
@@ -48,6 +48,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InstanceSettingsServiceStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceTemplatesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceTemplatesStub.java
index 8b5e64c40301..800a14332745 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceTemplatesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceTemplatesStub.java
@@ -37,6 +37,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsInstanceTemplateRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InstanceTemplatesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceTemplatesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceTemplatesStubSettings.java
index de68cffbb594..e102d1251f5c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceTemplatesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstanceTemplatesStubSettings.java
@@ -70,6 +70,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InstanceTemplatesStubSettings extends StubSettings<InstanceTemplatesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstancesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstancesStub.java
index 5be3e72e0e22..4b1ae02203f3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstancesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstancesStub.java
@@ -88,6 +88,7 @@
 import com.google.cloud.compute.v1.UpdateNetworkInterfaceInstanceRequest;
 import com.google.cloud.compute.v1.UpdateShieldedInstanceConfigInstanceRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -95,6 +96,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InstancesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstancesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstancesStubSettings.java
index 354097ad8c96..a708d49e7419 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstancesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstancesStubSettings.java
@@ -122,6 +122,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -197,6 +198,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InstancesStubSettings extends StubSettings<InstancesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstantSnapshotGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstantSnapshotGroupsStub.java
index e5cd8ddd257e..ae90dd04bd1d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstantSnapshotGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstantSnapshotGroupsStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsInstantSnapshotGroupRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InstantSnapshotGroupsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstantSnapshotGroupsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstantSnapshotGroupsStubSettings.java
index af9d3b4bb246..b8d6850a65a5 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstantSnapshotGroupsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstantSnapshotGroupsStubSettings.java
@@ -65,6 +65,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -143,6 +144,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InstantSnapshotGroupsStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstantSnapshotsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstantSnapshotsStub.java
index ece3b336d371..cbd26ab281a3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstantSnapshotsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstantSnapshotsStub.java
@@ -38,6 +38,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsInstantSnapshotRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InstantSnapshotsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstantSnapshotsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstantSnapshotsStubSettings.java
index 3fa8fcccb6db..354843db4f60 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstantSnapshotsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InstantSnapshotsStubSettings.java
@@ -71,6 +71,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InstantSnapshotsStubSettings extends StubSettings<InstantSnapshotsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectAttachmentGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectAttachmentGroupsStub.java
index 3d8c0e6dc943..6358ee9a9729 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectAttachmentGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectAttachmentGroupsStub.java
@@ -37,6 +37,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsInterconnectAttachmentGroupRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InterconnectAttachmentGroupsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectAttachmentGroupsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectAttachmentGroupsStubSettings.java
index 0ce9e63cabfa..2a21d54468fa 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectAttachmentGroupsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectAttachmentGroupsStubSettings.java
@@ -68,6 +68,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InterconnectAttachmentGroupsStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectAttachmentsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectAttachmentsStub.java
index 45243c7a3078..9f0e06f5e9d6 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectAttachmentsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectAttachmentsStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.compute.v1.PatchInterconnectAttachmentRequest;
 import com.google.cloud.compute.v1.SetLabelsInterconnectAttachmentRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InterconnectAttachmentsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectAttachmentsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectAttachmentsStubSettings.java
index 59022a372920..f8a67f864471 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectAttachmentsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectAttachmentsStubSettings.java
@@ -67,6 +67,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InterconnectAttachmentsStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectGroupsStub.java
index 8210abee5cee..44049c5677af 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectGroupsStub.java
@@ -38,6 +38,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsInterconnectGroupRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InterconnectGroupsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectGroupsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectGroupsStubSettings.java
index e7deaf4d6df8..32eb64965092 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectGroupsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectGroupsStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InterconnectGroupsStubSettings extends StubSettings<InterconnectGroupsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectLocationsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectLocationsStub.java
index 65bdd9d7700d..e93c3b5ab81e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectLocationsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectLocationsStub.java
@@ -25,6 +25,7 @@
 import com.google.cloud.compute.v1.InterconnectLocationList;
 import com.google.cloud.compute.v1.ListInterconnectLocationsRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InterconnectLocationsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectLocationsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectLocationsStubSettings.java
index 92be04a10e41..9ae0ef66bce4 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectLocationsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectLocationsStubSettings.java
@@ -53,6 +53,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -105,6 +106,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InterconnectLocationsStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectRemoteLocationsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectRemoteLocationsStub.java
index 7dec5fff3b1a..5bbc1996511d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectRemoteLocationsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectRemoteLocationsStub.java
@@ -25,6 +25,7 @@
 import com.google.cloud.compute.v1.InterconnectRemoteLocationList;
 import com.google.cloud.compute.v1.ListInterconnectRemoteLocationsRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InterconnectRemoteLocationsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectRemoteLocationsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectRemoteLocationsStubSettings.java
index 08f8d0bae672..f261449132ac 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectRemoteLocationsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectRemoteLocationsStubSettings.java
@@ -53,6 +53,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -105,6 +106,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InterconnectRemoteLocationsStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectsStub.java
index 399d61de8727..c287529e9936 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectsStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.compute.v1.PatchInterconnectRequest;
 import com.google.cloud.compute.v1.SetLabelsInterconnectRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InterconnectsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectsStubSettings.java
index e344a341b374..f784e48d2877 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/InterconnectsStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -143,6 +144,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InterconnectsStubSettings extends StubSettings<InterconnectsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/LicenseCodesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/LicenseCodesStub.java
index 0b410fa0b570..cb82d6efe03f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/LicenseCodesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/LicenseCodesStub.java
@@ -26,6 +26,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsLicenseCodeRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LicenseCodesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/LicenseCodesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/LicenseCodesStubSettings.java
index 3fe287291da8..e39d61093140 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/LicenseCodesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/LicenseCodesStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LicenseCodesStubSettings extends StubSettings<LicenseCodesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/LicensesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/LicensesStub.java
index a93ea55d92f6..005445c585be 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/LicensesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/LicensesStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import com.google.cloud.compute.v1.UpdateLicenseRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LicensesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/LicensesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/LicensesStubSettings.java
index e5b7bebc69e4..3efeac4e9787 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/LicensesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/LicensesStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LicensesStubSettings extends StubSettings<LicensesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/MachineImagesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/MachineImagesStub.java
index b943eaf4dae8..b102a6604fd1 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/MachineImagesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/MachineImagesStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsMachineImageRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MachineImagesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/MachineImagesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/MachineImagesStubSettings.java
index 13dc3a716e68..caff3846b4a6 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/MachineImagesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/MachineImagesStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -143,6 +144,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MachineImagesStubSettings extends StubSettings<MachineImagesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/MachineTypesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/MachineTypesStub.java
index 8b202d5b8806..05d5bc208881 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/MachineTypesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/MachineTypesStub.java
@@ -28,6 +28,7 @@
 import com.google.cloud.compute.v1.MachineTypeAggregatedList;
 import com.google.cloud.compute.v1.MachineTypeList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MachineTypesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/MachineTypesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/MachineTypesStubSettings.java
index b2023aa984fa..7bcf0cd9c40e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/MachineTypesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/MachineTypesStubSettings.java
@@ -58,6 +58,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MachineTypesStubSettings extends StubSettings<MachineTypesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkAttachmentsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkAttachmentsStub.java
index e534056a9910..d76f83621629 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkAttachmentsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkAttachmentsStub.java
@@ -38,6 +38,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsNetworkAttachmentRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NetworkAttachmentsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkAttachmentsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkAttachmentsStubSettings.java
index fc9621bd1f7a..31bfd11e29a4 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkAttachmentsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkAttachmentsStubSettings.java
@@ -71,6 +71,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -149,6 +150,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NetworkAttachmentsStubSettings extends StubSettings<NetworkAttachmentsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkEdgeSecurityServicesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkEdgeSecurityServicesStub.java
index a7f0b7d2251d..ab750b76da4f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkEdgeSecurityServicesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkEdgeSecurityServicesStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.compute.v1.Operation;
 import com.google.cloud.compute.v1.PatchNetworkEdgeSecurityServiceRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NetworkEdgeSecurityServicesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkEdgeSecurityServicesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkEdgeSecurityServicesStubSettings.java
index 9442a996e293..50d8042d1702 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkEdgeSecurityServicesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkEdgeSecurityServicesStubSettings.java
@@ -63,6 +63,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NetworkEdgeSecurityServicesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkEndpointGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkEndpointGroupsStub.java
index 9996fde5bfbc..ef74bb8b7a43 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkEndpointGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkEndpointGroupsStub.java
@@ -39,6 +39,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsNetworkEndpointGroupRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NetworkEndpointGroupsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkEndpointGroupsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkEndpointGroupsStubSettings.java
index eed7d83412fb..0b68587103da 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkEndpointGroupsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkEndpointGroupsStubSettings.java
@@ -73,6 +73,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NetworkEndpointGroupsStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkFirewallPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkFirewallPoliciesStub.java
index acc4b641b199..2b1905fab73d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkFirewallPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkFirewallPoliciesStub.java
@@ -52,6 +52,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsNetworkFirewallPolicyRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NetworkFirewallPoliciesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkFirewallPoliciesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkFirewallPoliciesStubSettings.java
index 7d34f587b751..89f85c6a1bdf 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkFirewallPoliciesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkFirewallPoliciesStubSettings.java
@@ -85,6 +85,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -163,6 +164,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NetworkFirewallPoliciesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkProfilesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkProfilesStub.java
index aede67a1b7f8..75b99c5543cd 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkProfilesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkProfilesStub.java
@@ -25,6 +25,7 @@
 import com.google.cloud.compute.v1.NetworkProfile;
 import com.google.cloud.compute.v1.NetworkProfilesListResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NetworkProfilesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkProfilesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkProfilesStubSettings.java
index 0baa278b4b2b..a5480cf573af 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkProfilesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworkProfilesStubSettings.java
@@ -53,6 +53,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NetworkProfilesStubSettings extends StubSettings<NetworkProfilesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworksStub.java
index dd2c68569cd3..4da1a8c7712c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworksStub.java
@@ -41,6 +41,7 @@
 import com.google.cloud.compute.v1.SwitchToCustomModeNetworkRequest;
 import com.google.cloud.compute.v1.UpdatePeeringNetworkRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NetworksStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworksStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworksStubSettings.java
index a9291746d509..c732a164f3d8 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworksStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NetworksStubSettings.java
@@ -73,6 +73,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NetworksStubSettings extends StubSettings<NetworksStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeGroupsStub.java
index def12568100a..be6647696e1d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeGroupsStub.java
@@ -46,6 +46,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsNodeGroupRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NodeGroupsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeGroupsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeGroupsStubSettings.java
index b60baa0ef54f..eb1fdb7ab7ea 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeGroupsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeGroupsStubSettings.java
@@ -80,6 +80,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NodeGroupsStubSettings extends StubSettings<NodeGroupsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeTemplatesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeTemplatesStub.java
index 6a373c10d469..1fe174636e0c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeTemplatesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeTemplatesStub.java
@@ -37,6 +37,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsNodeTemplateRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NodeTemplatesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeTemplatesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeTemplatesStubSettings.java
index 78e4aa5ef0a1..cffc7a3cd794 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeTemplatesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeTemplatesStubSettings.java
@@ -70,6 +70,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NodeTemplatesStubSettings extends StubSettings<NodeTemplatesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeTypesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeTypesStub.java
index f5de257fb8e7..a50dc021d8d8 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeTypesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeTypesStub.java
@@ -28,6 +28,7 @@
 import com.google.cloud.compute.v1.NodeTypeAggregatedList;
 import com.google.cloud.compute.v1.NodeTypeList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NodeTypesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeTypesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeTypesStubSettings.java
index 7d13b0562a7b..626c4d32424b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeTypesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/NodeTypesStubSettings.java
@@ -58,6 +58,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NodeTypesStubSettings extends StubSettings<NodeTypesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/OrganizationSecurityPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/OrganizationSecurityPoliciesStub.java
index 27fb9b2b59a1..67c1497f8b72 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/OrganizationSecurityPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/OrganizationSecurityPoliciesStub.java
@@ -45,6 +45,7 @@
 import com.google.cloud.compute.v1.SecurityPolicyList;
 import com.google.cloud.compute.v1.SecurityPolicyRule;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class OrganizationSecurityPoliciesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/OrganizationSecurityPoliciesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/OrganizationSecurityPoliciesStubSettings.java
index 65534dcb74e7..ea38e978283b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/OrganizationSecurityPoliciesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/OrganizationSecurityPoliciesStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class OrganizationSecurityPoliciesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PacketMirroringsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PacketMirroringsStub.java
index 4e91585dd0c8..16d616583134 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PacketMirroringsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PacketMirroringsStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsPacketMirroringRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PacketMirroringsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PacketMirroringsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PacketMirroringsStubSettings.java
index 3e7361b3f3e4..81057153bb6a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PacketMirroringsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PacketMirroringsStubSettings.java
@@ -68,6 +68,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PacketMirroringsStubSettings extends StubSettings<PacketMirroringsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PreviewFeaturesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PreviewFeaturesStub.java
index 3a54236d96af..7f7b52c8038b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PreviewFeaturesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PreviewFeaturesStub.java
@@ -28,6 +28,7 @@
 import com.google.cloud.compute.v1.PreviewFeatureList;
 import com.google.cloud.compute.v1.UpdatePreviewFeatureRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PreviewFeaturesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PreviewFeaturesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PreviewFeaturesStubSettings.java
index 431e4724d8f0..76ac3103d6f1 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PreviewFeaturesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PreviewFeaturesStubSettings.java
@@ -59,6 +59,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -136,6 +137,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PreviewFeaturesStubSettings extends StubSettings<PreviewFeaturesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ProjectsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ProjectsStub.java
index e824f1f03e7f..818ea1698468 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ProjectsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ProjectsStub.java
@@ -41,6 +41,7 @@
 import com.google.cloud.compute.v1.SetUsageExportBucketProjectRequest;
 import com.google.cloud.compute.v1.XpnHostList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ProjectsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ProjectsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ProjectsStubSettings.java
index e2dd753fcbc9..a3c9b537513a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ProjectsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ProjectsStubSettings.java
@@ -73,6 +73,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ProjectsStubSettings extends StubSettings<ProjectsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PublicAdvertisedPrefixesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PublicAdvertisedPrefixesStub.java
index 9403d8141d73..531087572c91 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PublicAdvertisedPrefixesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PublicAdvertisedPrefixesStub.java
@@ -32,6 +32,7 @@
 import com.google.cloud.compute.v1.PublicAdvertisedPrefixList;
 import com.google.cloud.compute.v1.WithdrawPublicAdvertisedPrefixeRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PublicAdvertisedPrefixesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PublicAdvertisedPrefixesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PublicAdvertisedPrefixesStubSettings.java
index d24120e0cd55..74cd649e5f27 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PublicAdvertisedPrefixesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PublicAdvertisedPrefixesStubSettings.java
@@ -63,6 +63,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PublicAdvertisedPrefixesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PublicDelegatedPrefixesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PublicDelegatedPrefixesStub.java
index ec1570848a7b..cafade38bc3f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PublicDelegatedPrefixesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PublicDelegatedPrefixesStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.compute.v1.PublicDelegatedPrefixList;
 import com.google.cloud.compute.v1.WithdrawPublicDelegatedPrefixeRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PublicDelegatedPrefixesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PublicDelegatedPrefixesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PublicDelegatedPrefixesStubSettings.java
index 289bc21791f1..ff75b76efebe 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PublicDelegatedPrefixesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/PublicDelegatedPrefixesStubSettings.java
@@ -68,6 +68,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PublicDelegatedPrefixesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionAutoscalersStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionAutoscalersStub.java
index 16be5b3a38d3..8234a6f2ca42 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionAutoscalersStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionAutoscalersStub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import com.google.cloud.compute.v1.UpdateRegionAutoscalerRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionAutoscalersStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionAutoscalersStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionAutoscalersStubSettings.java
index 6c6c022153c0..b30ae750c68b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionAutoscalersStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionAutoscalersStubSettings.java
@@ -64,6 +64,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -142,6 +143,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionAutoscalersStubSettings extends StubSettings<RegionAutoscalersStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionBackendBucketsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionBackendBucketsStub.java
index dc55da970c98..a77264db9793 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionBackendBucketsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionBackendBucketsStub.java
@@ -38,6 +38,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsRegionBackendBucketRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionBackendBucketsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionBackendBucketsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionBackendBucketsStubSettings.java
index 09e79174ae84..d97422ee4c71 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionBackendBucketsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionBackendBucketsStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionBackendBucketsStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionBackendServicesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionBackendServicesStub.java
index 2c75ad659118..a7d6420993a2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionBackendServicesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionBackendServicesStub.java
@@ -42,6 +42,7 @@
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import com.google.cloud.compute.v1.UpdateRegionBackendServiceRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionBackendServicesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionBackendServicesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionBackendServicesStubSettings.java
index 759a8384f672..9ac65d0cf0d8 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionBackendServicesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionBackendServicesStubSettings.java
@@ -73,6 +73,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionBackendServicesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionCommitmentsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionCommitmentsStub.java
index 30c1646fbb36..9e823fd37050 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionCommitmentsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionCommitmentsStub.java
@@ -32,6 +32,7 @@
 import com.google.cloud.compute.v1.Operation;
 import com.google.cloud.compute.v1.UpdateRegionCommitmentRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionCommitmentsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionCommitmentsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionCommitmentsStubSettings.java
index 87db7f5f7a65..8ef9153378d6 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionCommitmentsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionCommitmentsStubSettings.java
@@ -65,6 +65,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -143,6 +144,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionCommitmentsStubSettings extends StubSettings<RegionCommitmentsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionCompositeHealthChecksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionCompositeHealthChecksStub.java
index 48cd3de94a1f..ed3e97cd376e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionCompositeHealthChecksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionCompositeHealthChecksStub.java
@@ -37,6 +37,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsRegionCompositeHealthCheckRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionCompositeHealthChecksStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionCompositeHealthChecksStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionCompositeHealthChecksStubSettings.java
index 9163b73782d9..5ddd56667710 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionCompositeHealthChecksStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionCompositeHealthChecksStubSettings.java
@@ -70,6 +70,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionCompositeHealthChecksStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionDiskTypesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionDiskTypesStub.java
index 6edfbdfd1cd8..b12e51a26771 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionDiskTypesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionDiskTypesStub.java
@@ -25,6 +25,7 @@
 import com.google.cloud.compute.v1.ListRegionDiskTypesRequest;
 import com.google.cloud.compute.v1.RegionDiskTypeList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionDiskTypesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionDiskTypesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionDiskTypesStubSettings.java
index 7d9ad45c7eb3..fad3eb514702 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionDiskTypesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionDiskTypesStubSettings.java
@@ -53,6 +53,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionDiskTypesStubSettings extends StubSettings<RegionDiskTypesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionDisksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionDisksStub.java
index eb46fe26e328..eac8b4a1d1f8 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionDisksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionDisksStub.java
@@ -45,6 +45,7 @@
 import com.google.cloud.compute.v1.UpdateKmsKeyRegionDiskRequest;
 import com.google.cloud.compute.v1.UpdateRegionDiskRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionDisksStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionDisksStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionDisksStubSettings.java
index 607deb380878..cd679327175d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionDisksStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionDisksStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionDisksStubSettings extends StubSettings<RegionDisksStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthAggregationPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthAggregationPoliciesStub.java
index 08745dd9589c..58a6f1fe679d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthAggregationPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthAggregationPoliciesStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsRegionHealthAggregationPolicyRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionHealthAggregationPoliciesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthAggregationPoliciesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthAggregationPoliciesStubSettings.java
index 049fe477f842..54b81d8e2d8f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthAggregationPoliciesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthAggregationPoliciesStubSettings.java
@@ -68,6 +68,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionHealthAggregationPoliciesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthCheckServicesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthCheckServicesStub.java
index c349a6096efa..1a20670ad056 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthCheckServicesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthCheckServicesStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsRegionHealthCheckServiceRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionHealthCheckServicesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthCheckServicesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthCheckServicesStubSettings.java
index 20c866af8783..823db55df462 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthCheckServicesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthCheckServicesStubSettings.java
@@ -68,6 +68,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionHealthCheckServicesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthChecksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthChecksStub.java
index 3e7d9663f37c..28cc63cab576 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthChecksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthChecksStub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import com.google.cloud.compute.v1.UpdateRegionHealthCheckRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionHealthChecksStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthChecksStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthChecksStubSettings.java
index 8f180e9e6960..82478893a25c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthChecksStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthChecksStubSettings.java
@@ -64,6 +64,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -142,6 +143,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionHealthChecksStubSettings extends StubSettings<RegionHealthChecksStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthSourcesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthSourcesStub.java
index d1251aadf82b..d717d0f2a440 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthSourcesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthSourcesStub.java
@@ -37,6 +37,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsRegionHealthSourceRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionHealthSourcesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthSourcesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthSourcesStubSettings.java
index 5c0dc41a6dbc..88477b3e4428 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthSourcesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionHealthSourcesStubSettings.java
@@ -70,6 +70,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionHealthSourcesStubSettings extends StubSettings<RegionHealthSourcesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupManagerResizeRequestsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupManagerResizeRequestsStub.java
index c9d42ad75d52..995ede4ea654 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupManagerResizeRequestsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupManagerResizeRequestsStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.compute.v1.Operation;
 import com.google.cloud.compute.v1.RegionInstanceGroupManagerResizeRequestsListResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionInstanceGroupManagerResizeRequestsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupManagerResizeRequestsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupManagerResizeRequestsStubSettings.java
index 2c2eb4075169..1e4e7edd7257 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupManagerResizeRequestsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupManagerResizeRequestsStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -142,6 +143,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionInstanceGroupManagerResizeRequestsStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupManagersStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupManagersStub.java
index 2a3c36e7ed4e..5c6c6e5a9064 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupManagersStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupManagersStub.java
@@ -54,6 +54,7 @@
 import com.google.cloud.compute.v1.SuspendInstancesRegionInstanceGroupManagerRequest;
 import com.google.cloud.compute.v1.UpdatePerInstanceConfigsRegionInstanceGroupManagerRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionInstanceGroupManagersStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupManagersStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupManagersStubSettings.java
index 16769fd303ec..be304b5c2a3b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupManagersStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupManagersStubSettings.java
@@ -88,6 +88,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -166,6 +167,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionInstanceGroupManagersStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupsStub.java
index 8a332b397d58..148666556d33 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupsStub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsRegionInstanceGroupRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionInstanceGroupsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupsStubSettings.java
index 89dbe4c19d26..5f5912e79969 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceGroupsStubSettings.java
@@ -65,6 +65,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -143,6 +144,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionInstanceGroupsStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceTemplatesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceTemplatesStub.java
index 4644f361ebd6..e02a635de951 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceTemplatesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceTemplatesStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.compute.v1.ListRegionInstanceTemplatesRequest;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionInstanceTemplatesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceTemplatesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceTemplatesStubSettings.java
index fb982a699f16..a2e0261a851b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceTemplatesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstanceTemplatesStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -138,6 +139,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionInstanceTemplatesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstancesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstancesStub.java
index 4653607dc331..a4590bab8b69 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstancesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstancesStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.compute.v1.BulkInsertRegionInstanceRequest;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionInstancesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstancesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstancesStubSettings.java
index d83d0c9af122..f20ad38abbce 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstancesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstancesStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionInstancesStubSettings extends StubSettings<RegionInstancesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstantSnapshotGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstantSnapshotGroupsStub.java
index ebefa9848730..f78a7c1c7333 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstantSnapshotGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstantSnapshotGroupsStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsRegionInstantSnapshotGroupRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionInstantSnapshotGroupsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstantSnapshotGroupsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstantSnapshotGroupsStubSettings.java
index 4ecdfb77e2d7..50c885cd2d50 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstantSnapshotGroupsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstantSnapshotGroupsStubSettings.java
@@ -65,6 +65,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -143,6 +144,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionInstantSnapshotGroupsStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstantSnapshotsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstantSnapshotsStub.java
index cf2f7f7317da..006b110afd70 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstantSnapshotsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstantSnapshotsStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsRegionInstantSnapshotRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionInstantSnapshotsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstantSnapshotsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstantSnapshotsStubSettings.java
index 013630fcbf2b..339535dad94c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstantSnapshotsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionInstantSnapshotsStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionInstantSnapshotsStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNetworkEndpointGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNetworkEndpointGroupsStub.java
index d95cdba6cc4a..1cca5abf543f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNetworkEndpointGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNetworkEndpointGroupsStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.compute.v1.NetworkEndpointGroupsListNetworkEndpoints;
 import com.google.cloud.compute.v1.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionNetworkEndpointGroupsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNetworkEndpointGroupsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNetworkEndpointGroupsStubSettings.java
index 56b91c8485ad..e91b8574623f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNetworkEndpointGroupsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNetworkEndpointGroupsStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionNetworkEndpointGroupsStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNetworkFirewallPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNetworkFirewallPoliciesStub.java
index 5f1ae1293355..d3c6b906e9a2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNetworkFirewallPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNetworkFirewallPoliciesStub.java
@@ -47,6 +47,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsRegionNetworkFirewallPolicyRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionNetworkFirewallPoliciesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNetworkFirewallPoliciesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNetworkFirewallPoliciesStubSettings.java
index 95ff0fbbb446..a5b73df87c67 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNetworkFirewallPoliciesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNetworkFirewallPoliciesStubSettings.java
@@ -78,6 +78,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionNetworkFirewallPoliciesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNotificationEndpointsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNotificationEndpointsStub.java
index d2734485af5b..79f76139d26e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNotificationEndpointsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNotificationEndpointsStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsRegionNotificationEndpointRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionNotificationEndpointsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNotificationEndpointsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNotificationEndpointsStubSettings.java
index fff367e5e9d0..9cff69e2da4f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNotificationEndpointsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionNotificationEndpointsStubSettings.java
@@ -67,6 +67,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionNotificationEndpointsStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionOperationsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionOperationsStub.java
index a79ad050216a..6a4d8678078b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionOperationsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionOperationsStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.compute.v1.OperationList;
 import com.google.cloud.compute.v1.WaitRegionOperationRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionOperationsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionOperationsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionOperationsStubSettings.java
index 0a9840d9c536..b11b7fbfa768 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionOperationsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionOperationsStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionOperationsStubSettings extends StubSettings<RegionOperationsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSecurityPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSecurityPoliciesStub.java
index a6a842c4df02..c248a81109af 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSecurityPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSecurityPoliciesStub.java
@@ -36,6 +36,7 @@
 import com.google.cloud.compute.v1.SecurityPolicyRule;
 import com.google.cloud.compute.v1.SetLabelsRegionSecurityPolicyRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionSecurityPoliciesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSecurityPoliciesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSecurityPoliciesStubSettings.java
index 1c6e6f94d30d..b16f033c5ec2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSecurityPoliciesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSecurityPoliciesStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionSecurityPoliciesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSnapshotSettingsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSnapshotSettingsStub.java
index e07cbba8c556..77b6d2d4615c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSnapshotSettingsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSnapshotSettingsStub.java
@@ -24,6 +24,7 @@
 import com.google.cloud.compute.v1.PatchRegionSnapshotSettingRequest;
 import com.google.cloud.compute.v1.SnapshotSettings;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionSnapshotSettingsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSnapshotSettingsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSnapshotSettingsStubSettings.java
index acf2152bbc63..4a68d49f3823 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSnapshotSettingsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSnapshotSettingsStubSettings.java
@@ -48,6 +48,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionSnapshotSettingsStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSnapshotsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSnapshotsStub.java
index 8f587b65c39f..c6636a550e84 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSnapshotsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSnapshotsStub.java
@@ -36,6 +36,7 @@
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import com.google.cloud.compute.v1.UpdateKmsKeyRegionSnapshotRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionSnapshotsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSnapshotsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSnapshotsStubSettings.java
index b1d33c07f628..02bd92e386f6 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSnapshotsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSnapshotsStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionSnapshotsStubSettings extends StubSettings<RegionSnapshotsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSslCertificatesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSslCertificatesStub.java
index 31bd64fb5d1a..8299aa4cecb1 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSslCertificatesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSslCertificatesStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.compute.v1.SslCertificate;
 import com.google.cloud.compute.v1.SslCertificateList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionSslCertificatesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSslCertificatesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSslCertificatesStubSettings.java
index 832615867ba3..4b36216db473 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSslCertificatesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSslCertificatesStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -138,6 +139,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionSslCertificatesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSslPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSslPoliciesStub.java
index 1e8bbeef7b7d..585a509e0c86 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSslPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSslPoliciesStub.java
@@ -32,6 +32,7 @@
 import com.google.cloud.compute.v1.SslPoliciesListAvailableFeaturesResponse;
 import com.google.cloud.compute.v1.SslPolicy;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionSslPoliciesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSslPoliciesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSslPoliciesStubSettings.java
index 96c75b44b562..2e987a268390 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSslPoliciesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionSslPoliciesStubSettings.java
@@ -63,6 +63,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionSslPoliciesStubSettings extends StubSettings<RegionSslPoliciesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetHttpProxiesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetHttpProxiesStub.java
index e6a04ff4078a..bec32f6dd760 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetHttpProxiesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetHttpProxiesStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.compute.v1.TargetHttpProxy;
 import com.google.cloud.compute.v1.TargetHttpProxyList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionTargetHttpProxiesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetHttpProxiesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetHttpProxiesStubSettings.java
index 31f166d1b4c5..7b2180c3494e 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetHttpProxiesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetHttpProxiesStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -139,6 +140,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionTargetHttpProxiesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetHttpsProxiesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetHttpsProxiesStub.java
index ecb9c87e843d..48b0ea914607 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetHttpsProxiesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetHttpsProxiesStub.java
@@ -32,6 +32,7 @@
 import com.google.cloud.compute.v1.TargetHttpsProxy;
 import com.google.cloud.compute.v1.TargetHttpsProxyList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionTargetHttpsProxiesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetHttpsProxiesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetHttpsProxiesStubSettings.java
index eef7824ddc9a..722b1d8a2cef 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetHttpsProxiesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetHttpsProxiesStubSettings.java
@@ -63,6 +63,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionTargetHttpsProxiesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetTcpProxiesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetTcpProxiesStub.java
index 5a2fb00289ac..b23d25462153 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetTcpProxiesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetTcpProxiesStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.compute.v1.TargetTcpProxy;
 import com.google.cloud.compute.v1.TargetTcpProxyList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionTargetTcpProxiesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetTcpProxiesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetTcpProxiesStubSettings.java
index 84efb8891efb..41af7afd6945 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetTcpProxiesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionTargetTcpProxiesStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -138,6 +139,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionTargetTcpProxiesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionUrlMapsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionUrlMapsStub.java
index 97f674c085d3..39bebbb0b4cc 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionUrlMapsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionUrlMapsStub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.compute.v1.UrlMapsValidateResponse;
 import com.google.cloud.compute.v1.ValidateRegionUrlMapRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionUrlMapsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionUrlMapsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionUrlMapsStubSettings.java
index d9372a15cf50..31064086f2e4 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionUrlMapsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionUrlMapsStubSettings.java
@@ -64,6 +64,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionUrlMapsStubSettings extends StubSettings<RegionUrlMapsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionZonesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionZonesStub.java
index 68505ddeda34..8d0788709c86 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionZonesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionZonesStub.java
@@ -23,6 +23,7 @@
 import com.google.cloud.compute.v1.ListRegionZonesRequest;
 import com.google.cloud.compute.v1.ZoneList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionZonesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionZonesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionZonesStubSettings.java
index b7de78e5e3f1..32362d09cce8 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionZonesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionZonesStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionZonesStubSettings extends StubSettings<RegionZonesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionsStub.java
index e76358d3a870..4a71eee1f68a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionsStub.java
@@ -25,6 +25,7 @@
 import com.google.cloud.compute.v1.Region;
 import com.google.cloud.compute.v1.RegionList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionsStubSettings.java
index c830f0ec2344..6ca25b11e888 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RegionsStubSettings.java
@@ -53,6 +53,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionsStubSettings extends StubSettings<RegionsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationBlocksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationBlocksStub.java
index 58905e42422d..4a0f3d733637 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationBlocksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationBlocksStub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsReservationBlockRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ReservationBlocksStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationBlocksStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationBlocksStubSettings.java
index 18f117bdb641..a219042c67db 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationBlocksStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationBlocksStubSettings.java
@@ -65,6 +65,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -143,6 +144,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ReservationBlocksStubSettings extends StubSettings<ReservationBlocksStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationSlotsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationSlotsStub.java
index d6bfa13c3ff5..e6f0af537a1c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationSlotsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationSlotsStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.compute.v1.ReservationSlotsListResponse;
 import com.google.cloud.compute.v1.UpdateReservationSlotRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ReservationSlotsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationSlotsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationSlotsStubSettings.java
index 3b124926b1ce..97322ea7eead 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationSlotsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationSlotsStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -138,6 +139,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ReservationSlotsStubSettings extends StubSettings<ReservationSlotsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationSubBlocksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationSubBlocksStub.java
index 4f8d87d6e1cb..48b506d2f45b 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationSubBlocksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationSubBlocksStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsReservationSubBlockRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ReservationSubBlocksStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationSubBlocksStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationSubBlocksStubSettings.java
index e809654f2cbf..c4489d269fd5 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationSubBlocksStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationSubBlocksStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ReservationSubBlocksStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationsStub.java
index c292388ac6bb..2bb2186f8e79 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationsStub.java
@@ -40,6 +40,7 @@
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import com.google.cloud.compute.v1.UpdateReservationRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ReservationsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationsStubSettings.java
index 80203685f8e6..b0b4fe775544 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ReservationsStubSettings.java
@@ -73,6 +73,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ReservationsStubSettings extends StubSettings<ReservationsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ResourcePoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ResourcePoliciesStub.java
index e2ab0746133a..66ebbe0212cd 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ResourcePoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ResourcePoliciesStub.java
@@ -38,6 +38,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsResourcePolicyRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ResourcePoliciesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ResourcePoliciesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ResourcePoliciesStubSettings.java
index 7fb124a14bbe..0c226d2d8818 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ResourcePoliciesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ResourcePoliciesStubSettings.java
@@ -71,6 +71,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ResourcePoliciesStubSettings extends StubSettings<ResourcePoliciesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RolloutPlansStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RolloutPlansStub.java
index db2d21d9f8f6..02a1c74ba2a8 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RolloutPlansStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RolloutPlansStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.compute.v1.RolloutPlan;
 import com.google.cloud.compute.v1.RolloutPlansListResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RolloutPlansStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RolloutPlansStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RolloutPlansStubSettings.java
index 4603587fb863..8c3930a455b4 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RolloutPlansStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RolloutPlansStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RolloutPlansStubSettings extends StubSettings<RolloutPlansStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RolloutsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RolloutsStub.java
index 5ecf703a4b1c..80134ea693f3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RolloutsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RolloutsStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.compute.v1.Rollout;
 import com.google.cloud.compute.v1.RolloutsListResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RolloutsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RolloutsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RolloutsStubSettings.java
index f5b4b41e9899..d1694d245f5d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RolloutsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RolloutsStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -135,6 +136,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RolloutsStubSettings extends StubSettings<RolloutsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RoutersStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RoutersStub.java
index 84a9337d74c8..7c90928bc382 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RoutersStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RoutersStub.java
@@ -54,6 +54,7 @@
 import com.google.cloud.compute.v1.UpdateRouterRequest;
 import com.google.cloud.compute.v1.VmEndpointNatMappingsList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RoutersStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RoutersStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RoutersStubSettings.java
index 49ac285c43d2..f4ec088c094f 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RoutersStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RoutersStubSettings.java
@@ -90,6 +90,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -165,6 +166,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RoutersStubSettings extends StubSettings<RoutersStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RoutesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RoutesStub.java
index 18a970e8eccb..06bb91636688 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RoutesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RoutesStub.java
@@ -31,6 +31,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsRouteRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RoutesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RoutesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RoutesStubSettings.java
index 80125df97932..bc86a5b94b54 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RoutesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/RoutesStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RoutesStubSettings extends StubSettings<RoutesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SecurityPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SecurityPoliciesStub.java
index 4ec136641563..e034c9ff4d28 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SecurityPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SecurityPoliciesStub.java
@@ -41,6 +41,7 @@
 import com.google.cloud.compute.v1.SecurityPolicyRule;
 import com.google.cloud.compute.v1.SetLabelsSecurityPolicyRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SecurityPoliciesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SecurityPoliciesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SecurityPoliciesStubSettings.java
index 08253acd4600..c202a29bbd56 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SecurityPoliciesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SecurityPoliciesStubSettings.java
@@ -74,6 +74,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SecurityPoliciesStubSettings extends StubSettings<SecurityPoliciesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ServiceAttachmentsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ServiceAttachmentsStub.java
index 91356d658f0e..cea6127fd043 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ServiceAttachmentsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ServiceAttachmentsStub.java
@@ -38,6 +38,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsServiceAttachmentRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ServiceAttachmentsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ServiceAttachmentsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ServiceAttachmentsStubSettings.java
index 6354d4235715..3249e4cb6312 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ServiceAttachmentsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ServiceAttachmentsStubSettings.java
@@ -71,6 +71,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -149,6 +150,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ServiceAttachmentsStubSettings extends StubSettings<ServiceAttachmentsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SnapshotSettingsServiceStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SnapshotSettingsServiceStub.java
index 31266c4fade3..eb5c78b80663 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SnapshotSettingsServiceStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SnapshotSettingsServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.cloud.compute.v1.PatchSnapshotSettingRequest;
 import com.google.cloud.compute.v1.SnapshotSettings;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SnapshotSettingsServiceStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SnapshotSettingsServiceStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SnapshotSettingsServiceStubSettings.java
index 2b4cc451f7ac..909b396a952c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SnapshotSettingsServiceStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SnapshotSettingsServiceStubSettings.java
@@ -48,6 +48,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SnapshotSettingsServiceStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SnapshotsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SnapshotsStub.java
index 14cb6aa8e2b8..038b66bcb46c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SnapshotsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SnapshotsStub.java
@@ -36,6 +36,7 @@
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import com.google.cloud.compute.v1.UpdateKmsKeySnapshotRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SnapshotsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SnapshotsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SnapshotsStubSettings.java
index 6ef7cc10abff..48723c4618cf 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SnapshotsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SnapshotsStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -142,6 +143,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SnapshotsStubSettings extends StubSettings<SnapshotsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SslCertificatesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SslCertificatesStub.java
index 785c7a4cd2e7..d30a7c0a3eb6 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SslCertificatesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SslCertificatesStub.java
@@ -32,6 +32,7 @@
 import com.google.cloud.compute.v1.SslCertificateAggregatedList;
 import com.google.cloud.compute.v1.SslCertificateList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SslCertificatesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SslCertificatesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SslCertificatesStubSettings.java
index 3300e3bf8801..9b0da44202e0 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SslCertificatesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SslCertificatesStubSettings.java
@@ -65,6 +65,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -142,6 +143,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SslCertificatesStubSettings extends StubSettings<SslCertificatesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SslPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SslPoliciesStub.java
index 4a6eb7260cf8..65a0ee3bb148 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SslPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SslPoliciesStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.compute.v1.SslPoliciesListAvailableFeaturesResponse;
 import com.google.cloud.compute.v1.SslPolicy;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SslPoliciesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SslPoliciesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SslPoliciesStubSettings.java
index 66ba5475da1b..0f9b7addd794 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SslPoliciesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SslPoliciesStubSettings.java
@@ -68,6 +68,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SslPoliciesStubSettings extends StubSettings<SslPoliciesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/StoragePoolTypesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/StoragePoolTypesStub.java
index d6b35ec152ec..a4c95e839190 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/StoragePoolTypesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/StoragePoolTypesStub.java
@@ -28,6 +28,7 @@
 import com.google.cloud.compute.v1.StoragePoolTypeAggregatedList;
 import com.google.cloud.compute.v1.StoragePoolTypeList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class StoragePoolTypesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/StoragePoolTypesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/StoragePoolTypesStubSettings.java
index 0d7867e9a007..a1e98aa40628 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/StoragePoolTypesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/StoragePoolTypesStubSettings.java
@@ -58,6 +58,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class StoragePoolTypesStubSettings extends StubSettings<StoragePoolTypesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/StoragePoolsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/StoragePoolsStub.java
index da4b14f4b3ed..628beade4316 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/StoragePoolsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/StoragePoolsStub.java
@@ -41,6 +41,7 @@
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import com.google.cloud.compute.v1.UpdateStoragePoolRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class StoragePoolsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/StoragePoolsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/StoragePoolsStubSettings.java
index a36e8e6521f7..684f8c4f748d 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/StoragePoolsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/StoragePoolsStubSettings.java
@@ -75,6 +75,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class StoragePoolsStubSettings extends StubSettings<StoragePoolsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SubnetworksStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SubnetworksStub.java
index eb557a03dffe..a9934f514dff 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SubnetworksStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SubnetworksStub.java
@@ -43,6 +43,7 @@
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import com.google.cloud.compute.v1.UsableSubnetworksAggregatedList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SubnetworksStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SubnetworksStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SubnetworksStubSettings.java
index 799297201534..d99d924169b2 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SubnetworksStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/SubnetworksStubSettings.java
@@ -77,6 +77,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SubnetworksStubSettings extends StubSettings<SubnetworksStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetGrpcProxiesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetGrpcProxiesStub.java
index 765bf6bc61e4..7f914b8e6327 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetGrpcProxiesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetGrpcProxiesStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.compute.v1.TargetGrpcProxy;
 import com.google.cloud.compute.v1.TargetGrpcProxyList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TargetGrpcProxiesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetGrpcProxiesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetGrpcProxiesStubSettings.java
index f30e5ae73a7a..c6c7ba86be33 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetGrpcProxiesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetGrpcProxiesStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -139,6 +140,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TargetGrpcProxiesStubSettings extends StubSettings<TargetGrpcProxiesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetHttpProxiesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetHttpProxiesStub.java
index 18ce3204a69e..c694d6db691a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetHttpProxiesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetHttpProxiesStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.compute.v1.TargetHttpProxyAggregatedList;
 import com.google.cloud.compute.v1.TargetHttpProxyList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TargetHttpProxiesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetHttpProxiesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetHttpProxiesStubSettings.java
index 9a526c3fc912..c8d9e151dc92 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetHttpProxiesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetHttpProxiesStubSettings.java
@@ -67,6 +67,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TargetHttpProxiesStubSettings extends StubSettings<TargetHttpProxiesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetHttpsProxiesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetHttpsProxiesStub.java
index 3ac51752e76c..5b3cff1de046 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetHttpsProxiesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetHttpsProxiesStub.java
@@ -38,6 +38,7 @@
 import com.google.cloud.compute.v1.TargetHttpsProxyAggregatedList;
 import com.google.cloud.compute.v1.TargetHttpsProxyList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TargetHttpsProxiesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetHttpsProxiesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetHttpsProxiesStubSettings.java
index 2092094a3bac..cd7f1d9fed25 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetHttpsProxiesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetHttpsProxiesStubSettings.java
@@ -71,6 +71,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -149,6 +150,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TargetHttpsProxiesStubSettings extends StubSettings<TargetHttpsProxiesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetInstancesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetInstancesStub.java
index b84bebb36762..b1ceba2fd7df 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetInstancesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetInstancesStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsTargetInstanceRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TargetInstancesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetInstancesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetInstancesStubSettings.java
index 4f857bea76ac..0d3d5ad4a550 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetInstancesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetInstancesStubSettings.java
@@ -68,6 +68,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TargetInstancesStubSettings extends StubSettings<TargetInstancesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetPoolsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetPoolsStub.java
index 707c80c6c6ca..a3d4872f9024 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetPoolsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetPoolsStub.java
@@ -42,6 +42,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsTargetPoolRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TargetPoolsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetPoolsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetPoolsStubSettings.java
index 253d4ba8a2c6..946928c6b8d3 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetPoolsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetPoolsStubSettings.java
@@ -75,6 +75,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TargetPoolsStubSettings extends StubSettings<TargetPoolsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetSslProxiesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetSslProxiesStub.java
index 06aa825821ff..d0be885da4e0 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetSslProxiesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetSslProxiesStub.java
@@ -36,6 +36,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsTargetSslProxyRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TargetSslProxiesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetSslProxiesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetSslProxiesStubSettings.java
index 2319b9c17b98..41e8db971bd8 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetSslProxiesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetSslProxiesStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TargetSslProxiesStubSettings extends StubSettings<TargetSslProxiesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetTcpProxiesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetTcpProxiesStub.java
index f1ff3abf61ca..668f9c487251 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetTcpProxiesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetTcpProxiesStub.java
@@ -36,6 +36,7 @@
 import com.google.cloud.compute.v1.TestIamPermissionsTargetTcpProxyRequest;
 import com.google.cloud.compute.v1.TestPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TargetTcpProxiesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetTcpProxiesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetTcpProxiesStubSettings.java
index e40105d294ff..0b76ab522a4a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetTcpProxiesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetTcpProxiesStubSettings.java
@@ -69,6 +69,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TargetTcpProxiesStubSettings extends StubSettings<TargetTcpProxiesStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetVpnGatewaysStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetVpnGatewaysStub.java
index a2fcde84fa04..2aeb3c41e175 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetVpnGatewaysStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetVpnGatewaysStub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.compute.v1.TargetVpnGatewayAggregatedList;
 import com.google.cloud.compute.v1.TargetVpnGatewayList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TargetVpnGatewaysStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetVpnGatewaysStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetVpnGatewaysStubSettings.java
index 675b2e3bfdd8..51c0946a8583 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetVpnGatewaysStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/TargetVpnGatewaysStubSettings.java
@@ -66,6 +66,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TargetVpnGatewaysStubSettings extends StubSettings<TargetVpnGatewaysStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/UrlMapsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/UrlMapsStub.java
index 30c87dfa1125..1fe41ccffc46 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/UrlMapsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/UrlMapsStub.java
@@ -39,6 +39,7 @@
 import com.google.cloud.compute.v1.UrlMapsValidateResponse;
 import com.google.cloud.compute.v1.ValidateUrlMapRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class UrlMapsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/UrlMapsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/UrlMapsStubSettings.java
index aa6fe39d772c..2885d53af449 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/UrlMapsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/UrlMapsStubSettings.java
@@ -72,6 +72,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class UrlMapsStubSettings extends StubSettings<UrlMapsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/VpnGatewaysStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/VpnGatewaysStub.java
index 353fedd703d4..fbf49973874c 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/VpnGatewaysStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/VpnGatewaysStub.java
@@ -37,6 +37,7 @@
 import com.google.cloud.compute.v1.VpnGatewayList;
 import com.google.cloud.compute.v1.VpnGatewaysGetStatusResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class VpnGatewaysStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/VpnGatewaysStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/VpnGatewaysStubSettings.java
index ec74bb594747..3cf3001bb987 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/VpnGatewaysStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/VpnGatewaysStubSettings.java
@@ -70,6 +70,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class VpnGatewaysStubSettings extends StubSettings<VpnGatewaysStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/VpnTunnelsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/VpnTunnelsStub.java
index 1d7dbc55f822..c1bac9092988 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/VpnTunnelsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/VpnTunnelsStub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.compute.v1.VpnTunnelAggregatedList;
 import com.google.cloud.compute.v1.VpnTunnelList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class VpnTunnelsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/VpnTunnelsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/VpnTunnelsStubSettings.java
index e4335afea79f..33bee718bfbc 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/VpnTunnelsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/VpnTunnelsStubSettings.java
@@ -66,6 +66,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class VpnTunnelsStubSettings extends StubSettings<VpnTunnelsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/WireGroupsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/WireGroupsStub.java
index 03d9f95cbb42..cf865f6b5211 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/WireGroupsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/WireGroupsStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.compute.v1.WireGroup;
 import com.google.cloud.compute.v1.WireGroupList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class WireGroupsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/WireGroupsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/WireGroupsStubSettings.java
index 2ec044fe7066..892623b9da53 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/WireGroupsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/WireGroupsStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -136,6 +137,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class WireGroupsStubSettings extends StubSettings<WireGroupsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZoneOperationsStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZoneOperationsStub.java
index 6a0e916b5636..d75f8f005352 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZoneOperationsStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZoneOperationsStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.compute.v1.OperationList;
 import com.google.cloud.compute.v1.WaitZoneOperationRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ZoneOperationsStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZoneOperationsStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZoneOperationsStubSettings.java
index 68b1a12000fb..7ad2b570ef16 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZoneOperationsStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZoneOperationsStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ZoneOperationsStubSettings extends StubSettings<ZoneOperationsStubSettings> {
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZoneVmExtensionPoliciesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZoneVmExtensionPoliciesStub.java
index b3aa70fe407c..24a6f80dde14 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZoneVmExtensionPoliciesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZoneVmExtensionPoliciesStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.compute.v1.VmExtensionPolicy;
 import com.google.cloud.compute.v1.VmExtensionPolicyList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ZoneVmExtensionPoliciesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZoneVmExtensionPoliciesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZoneVmExtensionPoliciesStubSettings.java
index 8f4c50a79f1b..0fb066cdc52a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZoneVmExtensionPoliciesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZoneVmExtensionPoliciesStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -139,6 +140,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ZoneVmExtensionPoliciesStubSettings
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZonesStub.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZonesStub.java
index c6edf5b9bf83..c7a815b60cb9 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZonesStub.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZonesStub.java
@@ -25,6 +25,7 @@
 import com.google.cloud.compute.v1.Zone;
 import com.google.cloud.compute.v1.ZoneList;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ZonesStub implements BackgroundResource {
 
diff --git a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZonesStubSettings.java b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZonesStubSettings.java
index 2e88929e89f1..9ff3a68e965a 100644
--- a/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZonesStubSettings.java
+++ b/java-compute/google-cloud-compute/src/main/java/com/google/cloud/compute/v1/stub/ZonesStubSettings.java
@@ -53,6 +53,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ZonesStubSettings extends StubSettings<ZonesStubSettings> {
diff --git a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/ConfidentialComputingClient.java b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/ConfidentialComputingClient.java
index 096e3be34a2a..fddbe5eb40c3 100644
--- a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/ConfidentialComputingClient.java
+++ b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/ConfidentialComputingClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -218,6 +219,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConfidentialComputingClient implements BackgroundResource {
   private final ConfidentialComputingSettings settings;
diff --git a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/ConfidentialComputingSettings.java b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/ConfidentialComputingSettings.java
index 104ca98de5ad..825c9a62d8cb 100644
--- a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/ConfidentialComputingSettings.java
+++ b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/ConfidentialComputingSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConfidentialComputingSettings extends ClientSettings<ConfidentialComputingSettings> {
 
diff --git a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/ConfidentialComputingStub.java b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/ConfidentialComputingStub.java
index 02f54cb4e10e..3c38548822de 100644
--- a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/ConfidentialComputingStub.java
+++ b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/ConfidentialComputingStub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ConfidentialComputingStub implements BackgroundResource {
 
diff --git a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/ConfidentialComputingStubSettings.java b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/ConfidentialComputingStubSettings.java
index 5c4374a5dc89..8c5765d6187b 100644
--- a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/ConfidentialComputingStubSettings.java
+++ b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/ConfidentialComputingStubSettings.java
@@ -65,6 +65,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ConfidentialComputingStubSettings
diff --git a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/GrpcConfidentialComputingCallableFactory.java b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/GrpcConfidentialComputingCallableFactory.java
index 4c9b0546d57f..af8333416cb3 100644
--- a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/GrpcConfidentialComputingCallableFactory.java
+++ b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/GrpcConfidentialComputingCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConfidentialComputingCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/GrpcConfidentialComputingStub.java b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/GrpcConfidentialComputingStub.java
index c39794eb3017..9a369a2220c7 100644
--- a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/GrpcConfidentialComputingStub.java
+++ b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/GrpcConfidentialComputingStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConfidentialComputingStub extends ConfidentialComputingStub {
   private static final MethodDescriptor<CreateChallengeRequest, Challenge>
diff --git a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/HttpJsonConfidentialComputingCallableFactory.java b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/HttpJsonConfidentialComputingCallableFactory.java
index 872fad9e29c7..1a95240b6398 100644
--- a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/HttpJsonConfidentialComputingCallableFactory.java
+++ b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/HttpJsonConfidentialComputingCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConfidentialComputingCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/HttpJsonConfidentialComputingStub.java b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/HttpJsonConfidentialComputingStub.java
index 8224a3527aa6..b2ce71977ad3 100644
--- a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/HttpJsonConfidentialComputingStub.java
+++ b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1/stub/HttpJsonConfidentialComputingStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConfidentialComputingStub extends ConfidentialComputingStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/ConfidentialComputingClient.java b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/ConfidentialComputingClient.java
index 47718b1d291e..7aa8080cb7ce 100644
--- a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/ConfidentialComputingClient.java
+++ b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/ConfidentialComputingClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -189,6 +190,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConfidentialComputingClient implements BackgroundResource {
diff --git a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/ConfidentialComputingSettings.java b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/ConfidentialComputingSettings.java
index 60a209c2d541..a22e2caccfa2 100644
--- a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/ConfidentialComputingSettings.java
+++ b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/ConfidentialComputingSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConfidentialComputingSettings extends ClientSettings<ConfidentialComputingSettings> {
diff --git a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/ConfidentialComputingStub.java b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/ConfidentialComputingStub.java
index bffa390701ec..e2628b0f8b9e 100644
--- a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/ConfidentialComputingStub.java
+++ b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/ConfidentialComputingStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ConfidentialComputingStub implements BackgroundResource {
diff --git a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/ConfidentialComputingStubSettings.java b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/ConfidentialComputingStubSettings.java
index 0813e18eb8cc..ce69ea299671 100644
--- a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/ConfidentialComputingStubSettings.java
+++ b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/ConfidentialComputingStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/GrpcConfidentialComputingCallableFactory.java b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/GrpcConfidentialComputingCallableFactory.java
index 3abcbf9e7b52..8f913e4ff915 100644
--- a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/GrpcConfidentialComputingCallableFactory.java
+++ b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/GrpcConfidentialComputingCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConfidentialComputingCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/GrpcConfidentialComputingStub.java b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/GrpcConfidentialComputingStub.java
index b7b974c885a5..8495e7350779 100644
--- a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/GrpcConfidentialComputingStub.java
+++ b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/GrpcConfidentialComputingStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConfidentialComputingStub extends ConfidentialComputingStub {
diff --git a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/HttpJsonConfidentialComputingCallableFactory.java b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/HttpJsonConfidentialComputingCallableFactory.java
index 77b9c338f708..0dfe1ba11b82 100644
--- a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/HttpJsonConfidentialComputingCallableFactory.java
+++ b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/HttpJsonConfidentialComputingCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConfidentialComputingCallableFactory
diff --git a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/HttpJsonConfidentialComputingStub.java b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/HttpJsonConfidentialComputingStub.java
index ae3d8f1b75d8..6c6714cd0294 100644
--- a/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/HttpJsonConfidentialComputingStub.java
+++ b/java-confidentialcomputing/google-cloud-confidentialcomputing/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/stub/HttpJsonConfidentialComputingStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConfidentialComputingStub extends ConfidentialComputingStub {
diff --git a/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1/src/main/java/com/google/cloud/confidentialcomputing/v1/ChallengeName.java b/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1/src/main/java/com/google/cloud/confidentialcomputing/v1/ChallengeName.java
index de7b1b990f06..01c75bc93c9f 100644
--- a/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1/src/main/java/com/google/cloud/confidentialcomputing/v1/ChallengeName.java
+++ b/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1/src/main/java/com/google/cloud/confidentialcomputing/v1/ChallengeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ChallengeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_UUID =
diff --git a/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1/src/main/java/com/google/cloud/confidentialcomputing/v1/InstanceName.java b/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1/src/main/java/com/google/cloud/confidentialcomputing/v1/InstanceName.java
index d6363ea16c83..8cedb7468d9c 100644
--- a/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1/src/main/java/com/google/cloud/confidentialcomputing/v1/InstanceName.java
+++ b/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1/src/main/java/com/google/cloud/confidentialcomputing/v1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_ZONE_INSTANCE =
diff --git a/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1/src/main/java/com/google/cloud/confidentialcomputing/v1/LocationName.java b/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1/src/main/java/com/google/cloud/confidentialcomputing/v1/LocationName.java
index d3f1357dcf50..a8dd5ee45dd4 100644
--- a/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1/src/main/java/com/google/cloud/confidentialcomputing/v1/LocationName.java
+++ b/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1/src/main/java/com/google/cloud/confidentialcomputing/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1alpha1/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/ChallengeName.java b/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1alpha1/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/ChallengeName.java
index 4b139b3d8bb8..c87c3ee1f73e 100644
--- a/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1alpha1/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/ChallengeName.java
+++ b/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1alpha1/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/ChallengeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ChallengeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_UUID =
diff --git a/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1alpha1/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/LocationName.java b/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1alpha1/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/LocationName.java
index 798aa29122f0..2bdbc687a8b9 100644
--- a/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1alpha1/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/LocationName.java
+++ b/java-confidentialcomputing/proto-google-cloud-confidentialcomputing-v1alpha1/src/main/java/com/google/cloud/confidentialcomputing/v1alpha1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/ConfigDeliveryClient.java b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/ConfigDeliveryClient.java
index f4cb70aeac1a..d11d60b550c5 100644
--- a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/ConfigDeliveryClient.java
+++ b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/ConfigDeliveryClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -649,6 +650,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConfigDeliveryClient implements BackgroundResource {
   private final ConfigDeliverySettings settings;
diff --git a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/ConfigDeliverySettings.java b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/ConfigDeliverySettings.java
index 67c8cd1afeed..3e485feb9817 100644
--- a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/ConfigDeliverySettings.java
+++ b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/ConfigDeliverySettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConfigDeliverySettings extends ClientSettings<ConfigDeliverySettings> {
 
diff --git a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/ConfigDeliveryStub.java b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/ConfigDeliveryStub.java
index df5d5e2e31f6..bcc981a4a7e2 100644
--- a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/ConfigDeliveryStub.java
+++ b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/ConfigDeliveryStub.java
@@ -70,6 +70,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ConfigDeliveryStub implements BackgroundResource {
 
diff --git a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/ConfigDeliveryStubSettings.java b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/ConfigDeliveryStubSettings.java
index c44592d1c10c..3872d29fae75 100644
--- a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/ConfigDeliveryStubSettings.java
+++ b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/ConfigDeliveryStubSettings.java
@@ -104,6 +104,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -182,6 +183,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ConfigDeliveryStubSettings extends StubSettings<ConfigDeliveryStubSettings> {
diff --git a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/GrpcConfigDeliveryCallableFactory.java b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/GrpcConfigDeliveryCallableFactory.java
index 36507e34dc99..6e47692efcd7 100644
--- a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/GrpcConfigDeliveryCallableFactory.java
+++ b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/GrpcConfigDeliveryCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConfigDeliveryCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/GrpcConfigDeliveryStub.java b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/GrpcConfigDeliveryStub.java
index 7c768276aa38..b7d0656679a7 100644
--- a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/GrpcConfigDeliveryStub.java
+++ b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/GrpcConfigDeliveryStub.java
@@ -79,6 +79,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConfigDeliveryStub extends ConfigDeliveryStub {
   private static final MethodDescriptor<ListResourceBundlesRequest, ListResourceBundlesResponse>
diff --git a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/HttpJsonConfigDeliveryCallableFactory.java b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/HttpJsonConfigDeliveryCallableFactory.java
index b519c8001c8e..73b45f2ba4d8 100644
--- a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/HttpJsonConfigDeliveryCallableFactory.java
+++ b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/HttpJsonConfigDeliveryCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConfigDeliveryCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/HttpJsonConfigDeliveryStub.java b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/HttpJsonConfigDeliveryStub.java
index cd5f4b454648..07b24f90d2d3 100644
--- a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/HttpJsonConfigDeliveryStub.java
+++ b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1/stub/HttpJsonConfigDeliveryStub.java
@@ -90,6 +90,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConfigDeliveryStub extends ConfigDeliveryStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/ConfigDeliveryClient.java b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/ConfigDeliveryClient.java
index ef5bc391cf23..1de5344a08bd 100644
--- a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/ConfigDeliveryClient.java
+++ b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/ConfigDeliveryClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -649,6 +650,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConfigDeliveryClient implements BackgroundResource {
diff --git a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/ConfigDeliverySettings.java b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/ConfigDeliverySettings.java
index 1f17d7f6606b..bc37b334e88a 100644
--- a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/ConfigDeliverySettings.java
+++ b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/ConfigDeliverySettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConfigDeliverySettings extends ClientSettings<ConfigDeliverySettings> {
diff --git a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/ConfigDeliveryStub.java b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/ConfigDeliveryStub.java
index 6bed2fd20b54..cb8c7022b798 100644
--- a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/ConfigDeliveryStub.java
+++ b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/ConfigDeliveryStub.java
@@ -71,6 +71,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -78,6 +79,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ConfigDeliveryStub implements BackgroundResource {
diff --git a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/ConfigDeliveryStubSettings.java b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/ConfigDeliveryStubSettings.java
index e534224cf877..cd4083883919 100644
--- a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/ConfigDeliveryStubSettings.java
+++ b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/ConfigDeliveryStubSettings.java
@@ -104,6 +104,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -182,6 +183,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/GrpcConfigDeliveryCallableFactory.java b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/GrpcConfigDeliveryCallableFactory.java
index 075e9c525713..8bee0dbd470f 100644
--- a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/GrpcConfigDeliveryCallableFactory.java
+++ b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/GrpcConfigDeliveryCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConfigDeliveryCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/GrpcConfigDeliveryStub.java b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/GrpcConfigDeliveryStub.java
index 1a18a2871d2c..c8769260d29d 100644
--- a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/GrpcConfigDeliveryStub.java
+++ b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/GrpcConfigDeliveryStub.java
@@ -80,6 +80,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConfigDeliveryStub extends ConfigDeliveryStub {
diff --git a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/HttpJsonConfigDeliveryCallableFactory.java b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/HttpJsonConfigDeliveryCallableFactory.java
index 450cbf13e66b..ad6ea72305ae 100644
--- a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/HttpJsonConfigDeliveryCallableFactory.java
+++ b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/HttpJsonConfigDeliveryCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConfigDeliveryCallableFactory
diff --git a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/HttpJsonConfigDeliveryStub.java b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/HttpJsonConfigDeliveryStub.java
index f0fcd4ce8a2e..d2a239f3f00e 100644
--- a/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/HttpJsonConfigDeliveryStub.java
+++ b/java-configdelivery/google-cloud-configdelivery/src/main/java/com/google/cloud/configdelivery/v1beta/stub/HttpJsonConfigDeliveryStub.java
@@ -91,6 +91,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConfigDeliveryStub extends ConfigDeliveryStub {
diff --git a/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/FleetPackageName.java b/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/FleetPackageName.java
index 807a05f2e730..968ef299929e 100644
--- a/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/FleetPackageName.java
+++ b/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/FleetPackageName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FleetPackageName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FLEET_PACKAGE =
diff --git a/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/LocationName.java b/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/LocationName.java
index 93129ae4754a..6b4d22d7045c 100644
--- a/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/LocationName.java
+++ b/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/ReleaseName.java b/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/ReleaseName.java
index 5ba4cf79bbd7..8c517d78cac7 100644
--- a/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/ReleaseName.java
+++ b/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/ReleaseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReleaseName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RESOURCE_BUNDLE_RELEASE =
diff --git a/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/ResourceBundleName.java b/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/ResourceBundleName.java
index fe074546fb5f..d32a7e6a513c 100644
--- a/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/ResourceBundleName.java
+++ b/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/ResourceBundleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ResourceBundleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RESOURCE_BUNDLE =
diff --git a/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/RolloutName.java b/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/RolloutName.java
index ce4f76e240d5..7b2dcbb8937b 100644
--- a/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/RolloutName.java
+++ b/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/RolloutName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RolloutName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FLEET_PACKAGE_ROLLOUT =
diff --git a/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/VariantName.java b/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/VariantName.java
index fa318b280751..39bff3826669 100644
--- a/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/VariantName.java
+++ b/java-configdelivery/proto-google-cloud-configdelivery-v1/src/main/java/com/google/cloud/configdelivery/v1/VariantName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VariantName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RESOURCE_BUNDLE_RELEASE_VARIANT =
diff --git a/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/FleetPackageName.java b/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/FleetPackageName.java
index ceea13ab2bbb..550c489f255f 100644
--- a/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/FleetPackageName.java
+++ b/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/FleetPackageName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FleetPackageName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FLEET_PACKAGE =
diff --git a/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/LocationName.java b/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/LocationName.java
index 407d357a4fd7..98c3b73787ca 100644
--- a/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/LocationName.java
+++ b/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/ReleaseName.java b/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/ReleaseName.java
index 4110d9db08aa..f68d0ec36209 100644
--- a/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/ReleaseName.java
+++ b/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/ReleaseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReleaseName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RESOURCE_BUNDLE_RELEASE =
diff --git a/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/ResourceBundleName.java b/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/ResourceBundleName.java
index c06b1c2ade8d..71286af01a45 100644
--- a/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/ResourceBundleName.java
+++ b/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/ResourceBundleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ResourceBundleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RESOURCE_BUNDLE =
diff --git a/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/RolloutName.java b/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/RolloutName.java
index bc6242951562..4a84338c2372 100644
--- a/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/RolloutName.java
+++ b/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/RolloutName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RolloutName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FLEET_PACKAGE_ROLLOUT =
diff --git a/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/VariantName.java b/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/VariantName.java
index cec45daf6903..bf928abac755 100644
--- a/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/VariantName.java
+++ b/java-configdelivery/proto-google-cloud-configdelivery-v1beta/src/main/java/com/google/cloud/configdelivery/v1beta/VariantName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VariantName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RESOURCE_BUNDLE_RELEASE_VARIANT =
diff --git a/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/GatewayControlClient.java b/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/GatewayControlClient.java
index d342f093e755..ead8f6e2525f 100644
--- a/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/GatewayControlClient.java
+++ b/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/GatewayControlClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GatewayControlClient implements BackgroundResource {
   private final GatewayControlSettings settings;
diff --git a/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/GatewayControlSettings.java b/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/GatewayControlSettings.java
index 59b6b9d09361..1d9a156ac739 100644
--- a/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/GatewayControlSettings.java
+++ b/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/GatewayControlSettings.java
@@ -29,6 +29,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GatewayControlSettings extends ClientSettings<GatewayControlSettings> {
 
diff --git a/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/stub/GatewayControlStub.java b/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/stub/GatewayControlStub.java
index 0f361a58ccdf..96a60d8c4014 100644
--- a/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/stub/GatewayControlStub.java
+++ b/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/stub/GatewayControlStub.java
@@ -21,6 +21,7 @@
 import com.google.cloud.gkeconnect.gateway.v1.GenerateCredentialsRequest;
 import com.google.cloud.gkeconnect.gateway.v1.GenerateCredentialsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GatewayControlStub implements BackgroundResource {
 
diff --git a/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/stub/GatewayControlStubSettings.java b/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/stub/GatewayControlStubSettings.java
index 842449edee4c..285484bb2cd7 100644
--- a/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/stub/GatewayControlStubSettings.java
+++ b/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/stub/GatewayControlStubSettings.java
@@ -42,6 +42,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -94,6 +95,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GatewayControlStubSettings extends StubSettings<GatewayControlStubSettings> {
diff --git a/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/stub/HttpJsonGatewayControlCallableFactory.java b/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/stub/HttpJsonGatewayControlCallableFactory.java
index d1429941ca4d..675577613165 100644
--- a/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/stub/HttpJsonGatewayControlCallableFactory.java
+++ b/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/stub/HttpJsonGatewayControlCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGatewayControlCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/stub/HttpJsonGatewayControlStub.java b/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/stub/HttpJsonGatewayControlStub.java
index d7fd7531b791..ed167b8e3add 100644
--- a/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/stub/HttpJsonGatewayControlStub.java
+++ b/java-connectgateway/google-cloud-connectgateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1/stub/HttpJsonGatewayControlStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGatewayControlStub extends GatewayControlStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/ContactCenterInsightsClient.java b/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/ContactCenterInsightsClient.java
index 97a72b7ab6e1..6f6aa18e3a9f 100644
--- a/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/ContactCenterInsightsClient.java
+++ b/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/ContactCenterInsightsClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1533,6 +1534,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContactCenterInsightsClient implements BackgroundResource {
   private final ContactCenterInsightsSettings settings;
diff --git a/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/ContactCenterInsightsSettings.java b/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/ContactCenterInsightsSettings.java
index a9129c92a3de..75a58530a526 100644
--- a/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/ContactCenterInsightsSettings.java
+++ b/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/ContactCenterInsightsSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContactCenterInsightsSettings extends ClientSettings<ContactCenterInsightsSettings> {
 
diff --git a/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/ContactCenterInsightsStub.java b/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/ContactCenterInsightsStub.java
index d51be3049ffb..91d5c9e1b7af 100644
--- a/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/ContactCenterInsightsStub.java
+++ b/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/ContactCenterInsightsStub.java
@@ -165,6 +165,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -172,6 +173,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ContactCenterInsightsStub implements BackgroundResource {
 
diff --git a/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/ContactCenterInsightsStubSettings.java b/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/ContactCenterInsightsStubSettings.java
index fbf534ee1b85..01fafe8ae7e0 100644
--- a/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/ContactCenterInsightsStubSettings.java
+++ b/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/ContactCenterInsightsStubSettings.java
@@ -199,6 +199,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -278,6 +279,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ContactCenterInsightsStubSettings
diff --git a/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/GrpcContactCenterInsightsCallableFactory.java b/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/GrpcContactCenterInsightsCallableFactory.java
index 03425b83d2cd..bf1785e41146 100644
--- a/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/GrpcContactCenterInsightsCallableFactory.java
+++ b/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/GrpcContactCenterInsightsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcContactCenterInsightsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/GrpcContactCenterInsightsStub.java b/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/GrpcContactCenterInsightsStub.java
index f8f047bd80f1..4830014b8c93 100644
--- a/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/GrpcContactCenterInsightsStub.java
+++ b/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/GrpcContactCenterInsightsStub.java
@@ -174,6 +174,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -181,6 +182,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcContactCenterInsightsStub extends ContactCenterInsightsStub {
   private static final MethodDescriptor<CreateConversationRequest, Conversation>
diff --git a/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/HttpJsonContactCenterInsightsCallableFactory.java b/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/HttpJsonContactCenterInsightsCallableFactory.java
index f6173018815f..486153f9969c 100644
--- a/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/HttpJsonContactCenterInsightsCallableFactory.java
+++ b/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/HttpJsonContactCenterInsightsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonContactCenterInsightsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/HttpJsonContactCenterInsightsStub.java b/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/HttpJsonContactCenterInsightsStub.java
index 0a95793e3b0d..b2115e2b8dd4 100644
--- a/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/HttpJsonContactCenterInsightsStub.java
+++ b/java-contact-center-insights/google-cloud-contact-center-insights/src/main/java/com/google/cloud/contactcenterinsights/v1/stub/HttpJsonContactCenterInsightsStub.java
@@ -185,6 +185,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -192,6 +193,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonContactCenterInsightsStub extends ContactCenterInsightsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/AnalysisName.java b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/AnalysisName.java
index f3e002cd7aed..b1cf28b8b091 100644
--- a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/AnalysisName.java
+++ b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/AnalysisName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnalysisName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONVERSATION_ANALYSIS =
diff --git a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/AnalysisRuleName.java b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/AnalysisRuleName.java
index b462481d24f8..5e18b809a902 100644
--- a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/AnalysisRuleName.java
+++ b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/AnalysisRuleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnalysisRuleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ANALYSIS_RULE =
diff --git a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/ConversationName.java b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/ConversationName.java
index 9b86a14025df..fe620f6ff1f7 100644
--- a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/ConversationName.java
+++ b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/ConversationName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONVERSATION =
diff --git a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/EncryptionSpecName.java b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/EncryptionSpecName.java
index c33f108a41ac..2d8b7355bbe2 100644
--- a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/EncryptionSpecName.java
+++ b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/EncryptionSpecName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EncryptionSpecName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/FeedbackLabelName.java b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/FeedbackLabelName.java
index 7b84e1417eda..94572933ee77 100644
--- a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/FeedbackLabelName.java
+++ b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/FeedbackLabelName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeedbackLabelName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONVERSATION_FEEDBACK_LABEL =
diff --git a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/IssueModelName.java b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/IssueModelName.java
index f528d61b89f8..b6196ed2be77 100644
--- a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/IssueModelName.java
+++ b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/IssueModelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IssueModelName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ISSUE_MODEL =
diff --git a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/IssueName.java b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/IssueName.java
index 080be2e6db6b..53da25c649cb 100644
--- a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/IssueName.java
+++ b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/IssueName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IssueName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ISSUE_MODEL_ISSUE =
diff --git a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/LocationName.java b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/LocationName.java
index 424c64b26876..d14a11c33fea 100644
--- a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/LocationName.java
+++ b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/PhraseMatcherName.java b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/PhraseMatcherName.java
index 1c202f5e6af6..8a01b37e8fe8 100644
--- a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/PhraseMatcherName.java
+++ b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/PhraseMatcherName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PhraseMatcherName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PHRASE_MATCHER =
diff --git a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/QaQuestionName.java b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/QaQuestionName.java
index 71a64c8bc725..9dc594643d8e 100644
--- a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/QaQuestionName.java
+++ b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/QaQuestionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QaQuestionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_QA_SCORECARD_REVISION_QA_QUESTION =
diff --git a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/QaScorecardName.java b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/QaScorecardName.java
index 69eb1ca42cb0..1764eb573af3 100644
--- a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/QaScorecardName.java
+++ b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/QaScorecardName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QaScorecardName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_QA_SCORECARD =
diff --git a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/QaScorecardRevisionName.java b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/QaScorecardRevisionName.java
index c941ae5314b3..4c739e5cb7ba 100644
--- a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/QaScorecardRevisionName.java
+++ b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/QaScorecardRevisionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QaScorecardRevisionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_QA_SCORECARD_REVISION =
diff --git a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/SettingsName.java b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/SettingsName.java
index 85d0d841a4b2..fe8d5183ff31 100644
--- a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/SettingsName.java
+++ b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/SettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SettingsName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/ViewName.java b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/ViewName.java
index 2eeb31f23f14..d9e28a4e61f0 100644
--- a/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/ViewName.java
+++ b/java-contact-center-insights/proto-google-cloud-contact-center-insights-v1/src/main/java/com/google/cloud/contactcenterinsights/v1/ViewName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ViewName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_VIEW =
diff --git a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/ClusterManagerClient.java b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/ClusterManagerClient.java
index 899ebd141751..e501b2d6f6ed 100644
--- a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/ClusterManagerClient.java
+++ b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/ClusterManagerClient.java
@@ -85,6 +85,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -808,6 +809,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClusterManagerClient implements BackgroundResource {
   private final ClusterManagerSettings settings;
diff --git a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/ClusterManagerSettings.java b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/ClusterManagerSettings.java
index e622e1a297e5..6740d11a0509 100644
--- a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/ClusterManagerSettings.java
+++ b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/ClusterManagerSettings.java
@@ -83,6 +83,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -134,6 +135,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClusterManagerSettings extends ClientSettings<ClusterManagerSettings> {
 
diff --git a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/ClusterManagerStub.java b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/ClusterManagerStub.java
index aae2cf75971e..505199857966 100644
--- a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/ClusterManagerStub.java
+++ b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/ClusterManagerStub.java
@@ -70,6 +70,7 @@
 import com.google.container.v1.UpdateNodePoolRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ClusterManagerStub implements BackgroundResource {
 
diff --git a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/ClusterManagerStubSettings.java b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/ClusterManagerStubSettings.java
index 07f9947abc97..c1ac1924a640 100644
--- a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/ClusterManagerStubSettings.java
+++ b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/ClusterManagerStubSettings.java
@@ -103,6 +103,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ClusterManagerStubSettings extends StubSettings<ClusterManagerStubSettings> {
diff --git a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/GrpcClusterManagerCallableFactory.java b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/GrpcClusterManagerCallableFactory.java
index 57241e558646..8be1301abc15 100644
--- a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/GrpcClusterManagerCallableFactory.java
+++ b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/GrpcClusterManagerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcClusterManagerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/GrpcClusterManagerStub.java b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/GrpcClusterManagerStub.java
index 3fa6fad96d49..1a57f982c5c2 100644
--- a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/GrpcClusterManagerStub.java
+++ b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/GrpcClusterManagerStub.java
@@ -80,6 +80,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcClusterManagerStub extends ClusterManagerStub {
   private static final MethodDescriptor<ListClustersRequest, ListClustersResponse>
diff --git a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/HttpJsonClusterManagerCallableFactory.java b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/HttpJsonClusterManagerCallableFactory.java
index 283f3cc6e2bc..b7ee77bfc1cf 100644
--- a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/HttpJsonClusterManagerCallableFactory.java
+++ b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/HttpJsonClusterManagerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonClusterManagerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/HttpJsonClusterManagerStub.java b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/HttpJsonClusterManagerStub.java
index 321af856ff58..5e6083dc942d 100644
--- a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/HttpJsonClusterManagerStub.java
+++ b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/HttpJsonClusterManagerStub.java
@@ -87,6 +87,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -94,6 +95,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonClusterManagerStub extends ClusterManagerStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/ClusterManagerClient.java b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/ClusterManagerClient.java
index 1b091578c196..9ac414903ba9 100644
--- a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/ClusterManagerClient.java
+++ b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/ClusterManagerClient.java
@@ -91,6 +91,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -821,6 +822,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ClusterManagerClient implements BackgroundResource {
diff --git a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/ClusterManagerSettings.java b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/ClusterManagerSettings.java
index c3618974bfd5..19a2eaa1149e 100644
--- a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/ClusterManagerSettings.java
+++ b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/ClusterManagerSettings.java
@@ -85,6 +85,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -136,6 +137,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ClusterManagerSettings extends ClientSettings<ClusterManagerSettings> {
diff --git a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/stub/ClusterManagerStub.java b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/stub/ClusterManagerStub.java
index a82946d15635..6b11be715b14 100644
--- a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/stub/ClusterManagerStub.java
+++ b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/stub/ClusterManagerStub.java
@@ -74,6 +74,7 @@
 import com.google.container.v1beta1.UpdateNodePoolRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ClusterManagerStub implements BackgroundResource {
diff --git a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/stub/ClusterManagerStubSettings.java b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/stub/ClusterManagerStubSettings.java
index 21b18c741e11..61a1b06d57f5 100644
--- a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/stub/ClusterManagerStubSettings.java
+++ b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/stub/ClusterManagerStubSettings.java
@@ -103,6 +103,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/stub/GrpcClusterManagerCallableFactory.java b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/stub/GrpcClusterManagerCallableFactory.java
index 90a7b4547f33..2237e2ee27b5 100644
--- a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/stub/GrpcClusterManagerCallableFactory.java
+++ b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/stub/GrpcClusterManagerCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcClusterManagerCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/stub/GrpcClusterManagerStub.java b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/stub/GrpcClusterManagerStub.java
index ce079e0bc775..3aac5b74fae0 100644
--- a/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/stub/GrpcClusterManagerStub.java
+++ b/java-container/google-cloud-container/src/main/java/com/google/cloud/container/v1beta1/stub/GrpcClusterManagerStub.java
@@ -84,6 +84,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcClusterManagerStub extends ClusterManagerStub {
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/ContainerAnalysisClient.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/ContainerAnalysisClient.java
index 2b840b5f310b..e3f459a2285b 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/ContainerAnalysisClient.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/ContainerAnalysisClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -247,6 +248,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContainerAnalysisClient implements BackgroundResource {
   private final ContainerAnalysisSettings settings;
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/ContainerAnalysisSettings.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/ContainerAnalysisSettings.java
index 3ffa9510460b..4c0ee171e837 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/ContainerAnalysisSettings.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/ContainerAnalysisSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContainerAnalysisSettings extends ClientSettings<ContainerAnalysisSettings> {
 
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/ContainerAnalysisStub.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/ContainerAnalysisStub.java
index a49747be07da..da77b4f5b6cf 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/ContainerAnalysisStub.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/ContainerAnalysisStub.java
@@ -28,6 +28,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ContainerAnalysisStub implements BackgroundResource {
 
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/ContainerAnalysisStubSettings.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/ContainerAnalysisStubSettings.java
index 3ad9e199442a..29ccb77cd4ba 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/ContainerAnalysisStubSettings.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/ContainerAnalysisStubSettings.java
@@ -53,6 +53,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -106,6 +107,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ContainerAnalysisStubSettings extends StubSettings<ContainerAnalysisStubSettings> {
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/GrpcContainerAnalysisCallableFactory.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/GrpcContainerAnalysisCallableFactory.java
index 5b1e71440824..7a31ae0faaea 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/GrpcContainerAnalysisCallableFactory.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/GrpcContainerAnalysisCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcContainerAnalysisCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/GrpcContainerAnalysisStub.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/GrpcContainerAnalysisStub.java
index 55b383072d61..7b15ee8c2cc6 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/GrpcContainerAnalysisStub.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/GrpcContainerAnalysisStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcContainerAnalysisStub extends ContainerAnalysisStub {
   private static final MethodDescriptor<SetIamPolicyRequest, Policy> setIamPolicyMethodDescriptor =
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/HttpJsonContainerAnalysisCallableFactory.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/HttpJsonContainerAnalysisCallableFactory.java
index 55a5709dcfd0..b0dd323fae24 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/HttpJsonContainerAnalysisCallableFactory.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/HttpJsonContainerAnalysisCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonContainerAnalysisCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/HttpJsonContainerAnalysisStub.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/HttpJsonContainerAnalysisStub.java
index f9d2a1b1c595..36895b335dcf 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/HttpJsonContainerAnalysisStub.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/HttpJsonContainerAnalysisStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonContainerAnalysisStub extends ContainerAnalysisStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/ContainerAnalysisV1Beta1Client.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/ContainerAnalysisV1Beta1Client.java
index c0ff4a91a007..463566ed3f47 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/ContainerAnalysisV1Beta1Client.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/ContainerAnalysisV1Beta1Client.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -242,6 +243,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ContainerAnalysisV1Beta1Client implements BackgroundResource {
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/ContainerAnalysisV1Beta1Settings.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/ContainerAnalysisV1Beta1Settings.java
index e1f2ef5ad355..ba33661df85b 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/ContainerAnalysisV1Beta1Settings.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/ContainerAnalysisV1Beta1Settings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -93,6 +94,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ContainerAnalysisV1Beta1Settings
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/GrafeasV1Beta1Client.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/GrafeasV1Beta1Client.java
index 00aa0c866a16..4032707fdcdb 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/GrafeasV1Beta1Client.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/GrafeasV1Beta1Client.java
@@ -56,6 +56,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -366,6 +367,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrafeasV1Beta1Client implements BackgroundResource {
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/GrafeasV1Beta1Settings.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/GrafeasV1Beta1Settings.java
index 365703d4b5f7..05e73288c54d 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/GrafeasV1Beta1Settings.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/GrafeasV1Beta1Settings.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrafeasV1Beta1Settings extends ClientSettings<GrafeasV1Beta1Settings> {
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/ContainerAnalysisV1Beta1Stub.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/ContainerAnalysisV1Beta1Stub.java
index 36eba4ebf436..bc7618adf9f6 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/ContainerAnalysisV1Beta1Stub.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/ContainerAnalysisV1Beta1Stub.java
@@ -29,6 +29,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ContainerAnalysisV1Beta1Stub implements BackgroundResource {
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/ContainerAnalysisV1Beta1StubSettings.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/ContainerAnalysisV1Beta1StubSettings.java
index 51b601571b41..eb76fd007ac4 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/ContainerAnalysisV1Beta1StubSettings.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/ContainerAnalysisV1Beta1StubSettings.java
@@ -53,6 +53,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -106,6 +107,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrafeasV1Beta1Stub.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrafeasV1Beta1Stub.java
index 3489aa063351..01940370aa2b 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrafeasV1Beta1Stub.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrafeasV1Beta1Stub.java
@@ -48,6 +48,7 @@
 import io.grafeas.v1beta1.UpdateOccurrenceRequest;
 import io.grafeas.v1beta1.VulnerabilityOccurrencesSummary;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class GrafeasV1Beta1Stub implements BackgroundResource {
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrafeasV1Beta1StubSettings.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrafeasV1Beta1StubSettings.java
index 996ee8c57ec0..e4acba9f7b33 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrafeasV1Beta1StubSettings.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrafeasV1Beta1StubSettings.java
@@ -79,6 +79,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrpcContainerAnalysisV1Beta1CallableFactory.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrpcContainerAnalysisV1Beta1CallableFactory.java
index 30ea2220a2e2..69d29e8391fb 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrpcContainerAnalysisV1Beta1CallableFactory.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrpcContainerAnalysisV1Beta1CallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcContainerAnalysisV1Beta1CallableFactory implements GrpcStubCallableFactory {
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrpcContainerAnalysisV1Beta1Stub.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrpcContainerAnalysisV1Beta1Stub.java
index bb461ed39814..1402c72a74f9 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrpcContainerAnalysisV1Beta1Stub.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrpcContainerAnalysisV1Beta1Stub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcContainerAnalysisV1Beta1Stub extends ContainerAnalysisV1Beta1Stub {
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrpcGrafeasV1Beta1CallableFactory.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrpcGrafeasV1Beta1CallableFactory.java
index e9004c06fdd8..c9795177e92d 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrpcGrafeasV1Beta1CallableFactory.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrpcGrafeasV1Beta1CallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGrafeasV1Beta1CallableFactory implements GrpcStubCallableFactory {
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrpcGrafeasV1Beta1Stub.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrpcGrafeasV1Beta1Stub.java
index c356a37326ee..41ef03f7181d 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrpcGrafeasV1Beta1Stub.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/GrpcGrafeasV1Beta1Stub.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGrafeasV1Beta1Stub extends GrafeasV1Beta1Stub {
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/HttpJsonContainerAnalysisV1Beta1CallableFactory.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/HttpJsonContainerAnalysisV1Beta1CallableFactory.java
index 22f428bdcbce..8cbb9e33ea0f 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/HttpJsonContainerAnalysisV1Beta1CallableFactory.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/HttpJsonContainerAnalysisV1Beta1CallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonContainerAnalysisV1Beta1CallableFactory
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/HttpJsonContainerAnalysisV1Beta1Stub.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/HttpJsonContainerAnalysisV1Beta1Stub.java
index e7640f9954b8..338d85800c9d 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/HttpJsonContainerAnalysisV1Beta1Stub.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/HttpJsonContainerAnalysisV1Beta1Stub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonContainerAnalysisV1Beta1Stub extends ContainerAnalysisV1Beta1Stub {
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/HttpJsonGrafeasV1Beta1CallableFactory.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/HttpJsonGrafeasV1Beta1CallableFactory.java
index 4e4d993ff86e..45258714e983 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/HttpJsonGrafeasV1Beta1CallableFactory.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/HttpJsonGrafeasV1Beta1CallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGrafeasV1Beta1CallableFactory
diff --git a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/HttpJsonGrafeasV1Beta1Stub.java b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/HttpJsonGrafeasV1Beta1Stub.java
index 48d00da5acd2..5710710b3323 100644
--- a/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/HttpJsonGrafeasV1Beta1Stub.java
+++ b/java-containeranalysis/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1beta1/stub/HttpJsonGrafeasV1Beta1Stub.java
@@ -65,6 +65,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGrafeasV1Beta1Stub extends GrafeasV1Beta1Stub {
diff --git a/java-containeranalysis/proto-google-cloud-containeranalysis-v1/src/main/java/com/google/containeranalysis/v1/ProjectName.java b/java-containeranalysis/proto-google-cloud-containeranalysis-v1/src/main/java/com/google/containeranalysis/v1/ProjectName.java
index 301bea76bd64..6baa39afcf56 100644
--- a/java-containeranalysis/proto-google-cloud-containeranalysis-v1/src/main/java/com/google/containeranalysis/v1/ProjectName.java
+++ b/java-containeranalysis/proto-google-cloud-containeranalysis-v1/src/main/java/com/google/containeranalysis/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentLinkServiceClient.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentLinkServiceClient.java
index 0c51ceacdfc1..4fd37cdc6c93 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentLinkServiceClient.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentLinkServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -200,6 +201,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentLinkServiceClient implements BackgroundResource {
   private final DocumentLinkServiceSettings settings;
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentLinkServiceSettings.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentLinkServiceSettings.java
index 40af79c40a50..419774d7bc2b 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentLinkServiceSettings.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentLinkServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentLinkServiceSettings extends ClientSettings<DocumentLinkServiceSettings> {
 
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentSchemaServiceClient.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentSchemaServiceClient.java
index 9ee10589f2b6..cbbb60a8c760 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentSchemaServiceClient.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentSchemaServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -220,6 +221,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentSchemaServiceClient implements BackgroundResource {
   private final DocumentSchemaServiceSettings settings;
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentSchemaServiceSettings.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentSchemaServiceSettings.java
index cddc2f1b8849..b5b598bf29a1 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentSchemaServiceSettings.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentSchemaServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentSchemaServiceSettings extends ClientSettings<DocumentSchemaServiceSettings> {
 
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentServiceClient.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentServiceClient.java
index e80201eddff9..c7dae0f95040 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentServiceClient.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -274,6 +275,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentServiceClient implements BackgroundResource {
   private final DocumentServiceSettings settings;
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentServiceSettings.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentServiceSettings.java
index 17e7f5abe7b0..4105a5cd99c7 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentServiceSettings.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentServiceSettings extends ClientSettings<DocumentServiceSettings> {
 
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/PipelineServiceClient.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/PipelineServiceClient.java
index bf756472f239..f24abe392c19 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/PipelineServiceClient.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/PipelineServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PipelineServiceClient implements BackgroundResource {
   private final PipelineServiceSettings settings;
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/PipelineServiceSettings.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/PipelineServiceSettings.java
index 053a6868500b..04e22eb8c1e5 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/PipelineServiceSettings.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/PipelineServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PipelineServiceSettings extends ClientSettings<PipelineServiceSettings> {
 
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/RuleSetServiceClient.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/RuleSetServiceClient.java
index f291e7bd8f9c..d8e74f2f057a 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/RuleSetServiceClient.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/RuleSetServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -214,6 +215,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RuleSetServiceClient implements BackgroundResource {
   private final RuleSetServiceSettings settings;
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/RuleSetServiceSettings.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/RuleSetServiceSettings.java
index 6cccbd7361e5..43a939536df2 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/RuleSetServiceSettings.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/RuleSetServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RuleSetServiceSettings extends ClientSettings<RuleSetServiceSettings> {
 
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/SynonymSetServiceClient.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/SynonymSetServiceClient.java
index ac62afd03762..c103592016a3 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/SynonymSetServiceClient.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/SynonymSetServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -218,6 +219,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SynonymSetServiceClient implements BackgroundResource {
   private final SynonymSetServiceSettings settings;
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/SynonymSetServiceSettings.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/SynonymSetServiceSettings.java
index dc914e86a030..80d063d3d369 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/SynonymSetServiceSettings.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/SynonymSetServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SynonymSetServiceSettings extends ClientSettings<SynonymSetServiceSettings> {
 
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentLinkServiceStub.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentLinkServiceStub.java
index 1bd942d8bc3d..9a1d20fc3041 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentLinkServiceStub.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentLinkServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.contentwarehouse.v1.ListLinkedTargetsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DocumentLinkServiceStub implements BackgroundResource {
 
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentLinkServiceStubSettings.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentLinkServiceStubSettings.java
index 6548f220c24b..b480dc35f990 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentLinkServiceStubSettings.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentLinkServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DocumentLinkServiceStubSettings extends StubSettings<DocumentLinkServiceStubSettings> {
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentSchemaServiceStub.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentSchemaServiceStub.java
index 6a45011e2e9f..72237bd663cb 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentSchemaServiceStub.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentSchemaServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.contentwarehouse.v1.UpdateDocumentSchemaRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DocumentSchemaServiceStub implements BackgroundResource {
 
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentSchemaServiceStubSettings.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentSchemaServiceStubSettings.java
index 74c157e7c053..33cdd35bbfa0 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentSchemaServiceStubSettings.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentSchemaServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DocumentSchemaServiceStubSettings
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentServiceStub.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentServiceStub.java
index c959b70eb730..767bb301ad4a 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentServiceStub.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentServiceStub.java
@@ -36,6 +36,7 @@
 import com.google.cloud.contentwarehouse.v1.UpdateDocumentResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DocumentServiceStub implements BackgroundResource {
 
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentServiceStubSettings.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentServiceStubSettings.java
index 522db973417a..70bde57d98f0 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentServiceStubSettings.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/DocumentServiceStubSettings.java
@@ -68,6 +68,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DocumentServiceStubSettings extends StubSettings<DocumentServiceStubSettings> {
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentLinkServiceCallableFactory.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentLinkServiceCallableFactory.java
index 9295fbebf9d7..4770881321a0 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentLinkServiceCallableFactory.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentLinkServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDocumentLinkServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentLinkServiceStub.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentLinkServiceStub.java
index b200a8134a13..122f8f1cc54c 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentLinkServiceStub.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentLinkServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDocumentLinkServiceStub extends DocumentLinkServiceStub {
   private static final MethodDescriptor<ListLinkedTargetsRequest, ListLinkedTargetsResponse>
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentSchemaServiceCallableFactory.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentSchemaServiceCallableFactory.java
index 4fd6afe7d229..5a0f70bf78a2 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentSchemaServiceCallableFactory.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentSchemaServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDocumentSchemaServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentSchemaServiceStub.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentSchemaServiceStub.java
index 07d43df8b620..016229acb627 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentSchemaServiceStub.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentSchemaServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDocumentSchemaServiceStub extends DocumentSchemaServiceStub {
   private static final MethodDescriptor<CreateDocumentSchemaRequest, DocumentSchema>
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentServiceCallableFactory.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentServiceCallableFactory.java
index fec942cd1b4c..6159a8a6397d 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentServiceCallableFactory.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDocumentServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentServiceStub.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentServiceStub.java
index 3ae643e0a563..c4b1c475616a 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentServiceStub.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcDocumentServiceStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDocumentServiceStub extends DocumentServiceStub {
   private static final MethodDescriptor<CreateDocumentRequest, CreateDocumentResponse>
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcPipelineServiceCallableFactory.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcPipelineServiceCallableFactory.java
index 053135cea221..c8c3e6cd4c4a 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcPipelineServiceCallableFactory.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcPipelineServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPipelineServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcPipelineServiceStub.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcPipelineServiceStub.java
index f860e16565ad..cbcec80bdbf9 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcPipelineServiceStub.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcPipelineServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPipelineServiceStub extends PipelineServiceStub {
   private static final MethodDescriptor<RunPipelineRequest, Operation> runPipelineMethodDescriptor =
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcRuleSetServiceCallableFactory.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcRuleSetServiceCallableFactory.java
index 17ac58dda9a8..c3e91e71992e 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcRuleSetServiceCallableFactory.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcRuleSetServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRuleSetServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcRuleSetServiceStub.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcRuleSetServiceStub.java
index 8ebe1e88b5b3..e48a36f61ca2 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcRuleSetServiceStub.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcRuleSetServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRuleSetServiceStub extends RuleSetServiceStub {
   private static final MethodDescriptor<CreateRuleSetRequest, RuleSet>
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcSynonymSetServiceCallableFactory.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcSynonymSetServiceCallableFactory.java
index 21aaa9c79d7d..143e6f0af43a 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcSynonymSetServiceCallableFactory.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcSynonymSetServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSynonymSetServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcSynonymSetServiceStub.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcSynonymSetServiceStub.java
index 68e6b61ea526..41c2f081d157 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcSynonymSetServiceStub.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/GrpcSynonymSetServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSynonymSetServiceStub extends SynonymSetServiceStub {
   private static final MethodDescriptor<CreateSynonymSetRequest, SynonymSet>
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentLinkServiceCallableFactory.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentLinkServiceCallableFactory.java
index 0e17753f035e..e7e659f2fe5d 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentLinkServiceCallableFactory.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentLinkServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentLinkServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentLinkServiceStub.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentLinkServiceStub.java
index b7334716e529..33025fded256 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentLinkServiceStub.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentLinkServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentLinkServiceStub extends DocumentLinkServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentSchemaServiceCallableFactory.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentSchemaServiceCallableFactory.java
index fb5a94785943..cbb5c2917ed1 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentSchemaServiceCallableFactory.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentSchemaServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentSchemaServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentSchemaServiceStub.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentSchemaServiceStub.java
index ba1f67533b35..51cdab6bc54d 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentSchemaServiceStub.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentSchemaServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentSchemaServiceStub extends DocumentSchemaServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentServiceCallableFactory.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentServiceCallableFactory.java
index d546f4d40731..1a3f89cd9133 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentServiceCallableFactory.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentServiceStub.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentServiceStub.java
index 161055c599bd..fd3d85be3cd0 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentServiceStub.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonDocumentServiceStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentServiceStub extends DocumentServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonPipelineServiceCallableFactory.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonPipelineServiceCallableFactory.java
index 369f71e9a2de..7308f8919748 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonPipelineServiceCallableFactory.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonPipelineServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPipelineServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonPipelineServiceStub.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonPipelineServiceStub.java
index d0e7c8d596e9..f66b78b4fb80 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonPipelineServiceStub.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonPipelineServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPipelineServiceStub extends PipelineServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonRuleSetServiceCallableFactory.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonRuleSetServiceCallableFactory.java
index 99c5332cd65c..3a4a98b00ea5 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonRuleSetServiceCallableFactory.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonRuleSetServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRuleSetServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonRuleSetServiceStub.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonRuleSetServiceStub.java
index b94539eb4828..6850f26a20be 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonRuleSetServiceStub.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonRuleSetServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRuleSetServiceStub extends RuleSetServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonSynonymSetServiceCallableFactory.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonSynonymSetServiceCallableFactory.java
index 915088682a5c..96dc862ef45a 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonSynonymSetServiceCallableFactory.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonSynonymSetServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSynonymSetServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonSynonymSetServiceStub.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonSynonymSetServiceStub.java
index 02525555259d..671be2717d53 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonSynonymSetServiceStub.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/HttpJsonSynonymSetServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSynonymSetServiceStub extends SynonymSetServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/PipelineServiceStub.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/PipelineServiceStub.java
index 5b1fa23f8cf0..a3c449537de8 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/PipelineServiceStub.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/PipelineServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PipelineServiceStub implements BackgroundResource {
 
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/PipelineServiceStubSettings.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/PipelineServiceStubSettings.java
index 8ca8345050f3..3367257ce57a 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/PipelineServiceStubSettings.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/PipelineServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -130,6 +131,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PipelineServiceStubSettings extends StubSettings<PipelineServiceStubSettings> {
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/RuleSetServiceStub.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/RuleSetServiceStub.java
index 8022058194ba..6867292114c8 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/RuleSetServiceStub.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/RuleSetServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.contentwarehouse.v1.UpdateRuleSetRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RuleSetServiceStub implements BackgroundResource {
 
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/RuleSetServiceStubSettings.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/RuleSetServiceStubSettings.java
index d6aa9b2594aa..a793d45ce4a7 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/RuleSetServiceStubSettings.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/RuleSetServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RuleSetServiceStubSettings extends StubSettings<RuleSetServiceStubSettings> {
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/SynonymSetServiceStub.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/SynonymSetServiceStub.java
index 56d40456e16a..5c9bdebc8906 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/SynonymSetServiceStub.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/SynonymSetServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.contentwarehouse.v1.UpdateSynonymSetRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SynonymSetServiceStub implements BackgroundResource {
 
diff --git a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/SynonymSetServiceStubSettings.java b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/SynonymSetServiceStubSettings.java
index e69918e125a4..9a4cd8af06be 100644
--- a/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/SynonymSetServiceStubSettings.java
+++ b/java-contentwarehouse/google-cloud-contentwarehouse/src/main/java/com/google/cloud/contentwarehouse/v1/stub/SynonymSetServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SynonymSetServiceStubSettings extends StubSettings<SynonymSetServiceStubSettings> {
diff --git a/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentLinkName.java b/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentLinkName.java
index 172ce5110260..15477b0fed6a 100644
--- a/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentLinkName.java
+++ b/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentLinkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentLinkName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DOCUMENT_DOCUMENT_LINK =
diff --git a/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentName.java b/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentName.java
index c85c9dda7f16..05b6237d8657 100644
--- a/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentName.java
+++ b/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DOCUMENT =
diff --git a/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentSchemaName.java b/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentSchemaName.java
index 8c06fa666ff9..f06052a964cb 100644
--- a/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentSchemaName.java
+++ b/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/DocumentSchemaName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentSchemaName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DOCUMENT_SCHEMA =
diff --git a/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/LocationName.java b/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/LocationName.java
index 5e7b55e5ed2e..cf89db6edd33 100644
--- a/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/LocationName.java
+++ b/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/RuleSetName.java b/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/RuleSetName.java
index d0d619bb6d74..080350bb3fa7 100644
--- a/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/RuleSetName.java
+++ b/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/RuleSetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RuleSetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RULE_SET =
diff --git a/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/SynonymSetName.java b/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/SynonymSetName.java
index 1a459f8442fc..a2123b551848 100644
--- a/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/SynonymSetName.java
+++ b/java-contentwarehouse/proto-google-cloud-contentwarehouse-v1/src/main/java/com/google/cloud/contentwarehouse/v1/SynonymSetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SynonymSetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONTEXT =
diff --git a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/DataFusionClient.java b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/DataFusionClient.java
index 15f0731e08f2..6ad5acb0953b 100644
--- a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/DataFusionClient.java
+++ b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/DataFusionClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -249,6 +250,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataFusionClient implements BackgroundResource {
   private final DataFusionSettings settings;
diff --git a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/DataFusionSettings.java b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/DataFusionSettings.java
index f7d9affb430d..b0cf9cc9a484 100644
--- a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/DataFusionSettings.java
+++ b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/DataFusionSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataFusionSettings extends ClientSettings<DataFusionSettings> {
 
diff --git a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/DataFusionStub.java b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/DataFusionStub.java
index dddf2d785839..0b5add7b5aca 100644
--- a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/DataFusionStub.java
+++ b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/DataFusionStub.java
@@ -37,6 +37,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataFusionStub implements BackgroundResource {
 
diff --git a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/DataFusionStubSettings.java b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/DataFusionStubSettings.java
index 1f8404bac750..ba8e05aaf16c 100644
--- a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/DataFusionStubSettings.java
+++ b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/DataFusionStubSettings.java
@@ -72,6 +72,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataFusionStubSettings extends StubSettings<DataFusionStubSettings> {
diff --git a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/GrpcDataFusionCallableFactory.java b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/GrpcDataFusionCallableFactory.java
index 35e889bbf49a..1c26164868e0 100644
--- a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/GrpcDataFusionCallableFactory.java
+++ b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/GrpcDataFusionCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataFusionCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/GrpcDataFusionStub.java b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/GrpcDataFusionStub.java
index ed4ce52a9317..784f9c13d496 100644
--- a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/GrpcDataFusionStub.java
+++ b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/GrpcDataFusionStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataFusionStub extends DataFusionStub {
   private static final MethodDescriptor<ListAvailableVersionsRequest, ListAvailableVersionsResponse>
diff --git a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/HttpJsonDataFusionCallableFactory.java b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/HttpJsonDataFusionCallableFactory.java
index d3195788067e..ae1d23fac079 100644
--- a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/HttpJsonDataFusionCallableFactory.java
+++ b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/HttpJsonDataFusionCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataFusionCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/HttpJsonDataFusionStub.java b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/HttpJsonDataFusionStub.java
index 2604a19c02f7..8098e28146eb 100644
--- a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/HttpJsonDataFusionStub.java
+++ b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1/stub/HttpJsonDataFusionStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataFusionStub extends DataFusionStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/DataFusionClient.java b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/DataFusionClient.java
index 419fbb790ae1..ac162536d253 100644
--- a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/DataFusionClient.java
+++ b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/DataFusionClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -356,6 +357,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataFusionClient implements BackgroundResource {
diff --git a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/DataFusionSettings.java b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/DataFusionSettings.java
index 8644a8c50d83..4835e2a67603 100644
--- a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/DataFusionSettings.java
+++ b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/DataFusionSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataFusionSettings extends ClientSettings<DataFusionSettings> {
diff --git a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/DataFusionStub.java b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/DataFusionStub.java
index 01ce68dabe7b..19aa5c4b56cc 100644
--- a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/DataFusionStub.java
+++ b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/DataFusionStub.java
@@ -51,6 +51,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DataFusionStub implements BackgroundResource {
diff --git a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/DataFusionStubSettings.java b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/DataFusionStubSettings.java
index e5e2f54953e6..18f5857368f3 100644
--- a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/DataFusionStubSettings.java
+++ b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/DataFusionStubSettings.java
@@ -87,6 +87,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -162,6 +163,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/GrpcDataFusionCallableFactory.java b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/GrpcDataFusionCallableFactory.java
index 3e0bba227a8e..34c311984616 100644
--- a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/GrpcDataFusionCallableFactory.java
+++ b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/GrpcDataFusionCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataFusionCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/GrpcDataFusionStub.java b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/GrpcDataFusionStub.java
index 899e498fb4cf..d8d92b3e5479 100644
--- a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/GrpcDataFusionStub.java
+++ b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/GrpcDataFusionStub.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataFusionStub extends DataFusionStub {
diff --git a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/HttpJsonDataFusionCallableFactory.java b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/HttpJsonDataFusionCallableFactory.java
index e3645a0aff2a..b7997ccc4d8c 100644
--- a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/HttpJsonDataFusionCallableFactory.java
+++ b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/HttpJsonDataFusionCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataFusionCallableFactory
diff --git a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/HttpJsonDataFusionStub.java b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/HttpJsonDataFusionStub.java
index f4a650f14c69..2c8c3a7ac085 100644
--- a/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/HttpJsonDataFusionStub.java
+++ b/java-data-fusion/google-cloud-data-fusion/src/main/java/com/google/cloud/datafusion/v1beta1/stub/HttpJsonDataFusionStub.java
@@ -71,6 +71,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -78,6 +79,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataFusionStub extends DataFusionStub {
diff --git a/java-data-fusion/proto-google-cloud-data-fusion-v1/src/main/java/com/google/cloud/datafusion/v1/InstanceName.java b/java-data-fusion/proto-google-cloud-data-fusion-v1/src/main/java/com/google/cloud/datafusion/v1/InstanceName.java
index f55a298f065e..c390ab3cdae2 100644
--- a/java-data-fusion/proto-google-cloud-data-fusion-v1/src/main/java/com/google/cloud/datafusion/v1/InstanceName.java
+++ b/java-data-fusion/proto-google-cloud-data-fusion-v1/src/main/java/com/google/cloud/datafusion/v1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-data-fusion/proto-google-cloud-data-fusion-v1/src/main/java/com/google/cloud/datafusion/v1/LocationName.java b/java-data-fusion/proto-google-cloud-data-fusion-v1/src/main/java/com/google/cloud/datafusion/v1/LocationName.java
index 449c4b61d12c..c3a8095f7c35 100644
--- a/java-data-fusion/proto-google-cloud-data-fusion-v1/src/main/java/com/google/cloud/datafusion/v1/LocationName.java
+++ b/java-data-fusion/proto-google-cloud-data-fusion-v1/src/main/java/com/google/cloud/datafusion/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-data-fusion/proto-google-cloud-data-fusion-v1beta1/src/main/java/com/google/cloud/datafusion/v1beta1/InstanceName.java b/java-data-fusion/proto-google-cloud-data-fusion-v1beta1/src/main/java/com/google/cloud/datafusion/v1beta1/InstanceName.java
index 0484da05656d..ddc9e975f643 100644
--- a/java-data-fusion/proto-google-cloud-data-fusion-v1beta1/src/main/java/com/google/cloud/datafusion/v1beta1/InstanceName.java
+++ b/java-data-fusion/proto-google-cloud-data-fusion-v1beta1/src/main/java/com/google/cloud/datafusion/v1beta1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-data-fusion/proto-google-cloud-data-fusion-v1beta1/src/main/java/com/google/cloud/datafusion/v1beta1/LocationName.java b/java-data-fusion/proto-google-cloud-data-fusion-v1beta1/src/main/java/com/google/cloud/datafusion/v1beta1/LocationName.java
index 7b3f47f8005c..5c1bed215677 100644
--- a/java-data-fusion/proto-google-cloud-data-fusion-v1beta1/src/main/java/com/google/cloud/datafusion/v1beta1/LocationName.java
+++ b/java-data-fusion/proto-google-cloud-data-fusion-v1beta1/src/main/java/com/google/cloud/datafusion/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/DatabaseCenterClient.java b/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/DatabaseCenterClient.java
index 5e45dae6d29e..785b750eb572 100644
--- a/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/DatabaseCenterClient.java
+++ b/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/DatabaseCenterClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -216,6 +217,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DatabaseCenterClient implements BackgroundResource {
diff --git a/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/DatabaseCenterSettings.java b/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/DatabaseCenterSettings.java
index f226359d7a84..2d88a10ba1d0 100644
--- a/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/DatabaseCenterSettings.java
+++ b/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/DatabaseCenterSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DatabaseCenterSettings extends ClientSettings<DatabaseCenterSettings> {
diff --git a/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/DatabaseCenterStub.java b/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/DatabaseCenterStub.java
index 8ba6e8e724aa..0863db2cd7c4 100644
--- a/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/DatabaseCenterStub.java
+++ b/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/DatabaseCenterStub.java
@@ -38,6 +38,7 @@
 import com.google.cloud.databasecenter.v1beta.QueryProductsRequest;
 import com.google.cloud.databasecenter.v1beta.QueryProductsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DatabaseCenterStub implements BackgroundResource {
diff --git a/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/DatabaseCenterStubSettings.java b/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/DatabaseCenterStubSettings.java
index a6242bfbfa46..b7c887d978e7 100644
--- a/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/DatabaseCenterStubSettings.java
+++ b/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/DatabaseCenterStubSettings.java
@@ -73,6 +73,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/GrpcDatabaseCenterCallableFactory.java b/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/GrpcDatabaseCenterCallableFactory.java
index fcee6500f927..d3eb2ab538df 100644
--- a/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/GrpcDatabaseCenterCallableFactory.java
+++ b/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/GrpcDatabaseCenterCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDatabaseCenterCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/GrpcDatabaseCenterStub.java b/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/GrpcDatabaseCenterStub.java
index 56fe42b51c68..138bc8cc9e76 100644
--- a/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/GrpcDatabaseCenterStub.java
+++ b/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/GrpcDatabaseCenterStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDatabaseCenterStub extends DatabaseCenterStub {
diff --git a/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/HttpJsonDatabaseCenterCallableFactory.java b/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/HttpJsonDatabaseCenterCallableFactory.java
index fd5208ecf288..d74ca419a989 100644
--- a/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/HttpJsonDatabaseCenterCallableFactory.java
+++ b/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/HttpJsonDatabaseCenterCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDatabaseCenterCallableFactory
diff --git a/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/HttpJsonDatabaseCenterStub.java b/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/HttpJsonDatabaseCenterStub.java
index 9a0abd5c8e48..388bdb8b4294 100644
--- a/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/HttpJsonDatabaseCenterStub.java
+++ b/java-databasecenter/google-cloud-databasecenter/src/main/java/com/google/cloud/databasecenter/v1beta/stub/HttpJsonDatabaseCenterStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDatabaseCenterStub extends DatabaseCenterStub {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/DataCatalogClient.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/DataCatalogClient.java
index 2ae795345d52..844e523fb050 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/DataCatalogClient.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/DataCatalogClient.java
@@ -44,6 +44,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -865,6 +866,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class DataCatalogClient implements BackgroundResource {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/DataCatalogSettings.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/DataCatalogSettings.java
index 9d0291835888..c2cc945fd95e 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/DataCatalogSettings.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/DataCatalogSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class DataCatalogSettings extends ClientSettings<DataCatalogSettings> {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagManagerClient.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagManagerClient.java
index 7f46aa4cd420..5c2843bc43ba 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagManagerClient.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagManagerClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -369,6 +370,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyTagManagerClient implements BackgroundResource {
   private final PolicyTagManagerSettings settings;
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagManagerSerializationClient.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagManagerSerializationClient.java
index 9a62e08fad0d..b51cc429c0b2 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagManagerSerializationClient.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagManagerSerializationClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -168,6 +169,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyTagManagerSerializationClient implements BackgroundResource {
   private final PolicyTagManagerSerializationSettings settings;
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagManagerSerializationSettings.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagManagerSerializationSettings.java
index e8f3b9955fad..504a3fb3641d 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagManagerSerializationSettings.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagManagerSerializationSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyTagManagerSerializationSettings
     extends ClientSettings<PolicyTagManagerSerializationSettings> {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagManagerSettings.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagManagerSettings.java
index 4a734d50f118..87a821caa200 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagManagerSettings.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagManagerSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyTagManagerSettings extends ClientSettings<PolicyTagManagerSettings> {
 
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/DataCatalogStub.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/DataCatalogStub.java
index 1a4b978ff861..e6fee04ca8d1 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/DataCatalogStub.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/DataCatalogStub.java
@@ -86,6 +86,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -95,6 +96,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public abstract class DataCatalogStub implements BackgroundResource {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/DataCatalogStubSettings.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/DataCatalogStubSettings.java
index fbe0ea6d6a8e..7af64132ebfa 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/DataCatalogStubSettings.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/DataCatalogStubSettings.java
@@ -121,6 +121,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -200,6 +201,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcDataCatalogCallableFactory.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcDataCatalogCallableFactory.java
index 94f77be50864..bb21812254bf 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcDataCatalogCallableFactory.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcDataCatalogCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class GrpcDataCatalogCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcDataCatalogStub.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcDataCatalogStub.java
index 62f8d39caf23..4d0b1fa03444 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcDataCatalogStub.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcDataCatalogStub.java
@@ -95,6 +95,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class GrpcDataCatalogStub extends DataCatalogStub {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcPolicyTagManagerCallableFactory.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcPolicyTagManagerCallableFactory.java
index 59b91b99dcbf..10639a140196 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcPolicyTagManagerCallableFactory.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcPolicyTagManagerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPolicyTagManagerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcPolicyTagManagerSerializationCallableFactory.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcPolicyTagManagerSerializationCallableFactory.java
index bfec103d229c..0794303d01d0 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcPolicyTagManagerSerializationCallableFactory.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcPolicyTagManagerSerializationCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPolicyTagManagerSerializationCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcPolicyTagManagerSerializationStub.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcPolicyTagManagerSerializationStub.java
index b27d702df729..f02a8cc38633 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcPolicyTagManagerSerializationStub.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcPolicyTagManagerSerializationStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPolicyTagManagerSerializationStub extends PolicyTagManagerSerializationStub {
   private static final MethodDescriptor<ReplaceTaxonomyRequest, Taxonomy>
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcPolicyTagManagerStub.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcPolicyTagManagerStub.java
index 992ed3025ce2..df9d161595c4 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcPolicyTagManagerStub.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/GrpcPolicyTagManagerStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPolicyTagManagerStub extends PolicyTagManagerStub {
   private static final MethodDescriptor<CreateTaxonomyRequest, Taxonomy>
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonDataCatalogCallableFactory.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonDataCatalogCallableFactory.java
index 9e57f669f8fc..765c26209bca 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonDataCatalogCallableFactory.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonDataCatalogCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class HttpJsonDataCatalogCallableFactory
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonDataCatalogStub.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonDataCatalogStub.java
index ef2dafa7f186..1a9b2cccd181 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonDataCatalogStub.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonDataCatalogStub.java
@@ -106,6 +106,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class HttpJsonDataCatalogStub extends DataCatalogStub {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonPolicyTagManagerCallableFactory.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonPolicyTagManagerCallableFactory.java
index 95fc3b907d7f..45c63fde5c50 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonPolicyTagManagerCallableFactory.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonPolicyTagManagerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPolicyTagManagerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonPolicyTagManagerSerializationCallableFactory.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonPolicyTagManagerSerializationCallableFactory.java
index 26563f41d7cd..8b400215901d 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonPolicyTagManagerSerializationCallableFactory.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonPolicyTagManagerSerializationCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPolicyTagManagerSerializationCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonPolicyTagManagerSerializationStub.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonPolicyTagManagerSerializationStub.java
index 238d0b2feb05..96bc38f4e3f5 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonPolicyTagManagerSerializationStub.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonPolicyTagManagerSerializationStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPolicyTagManagerSerializationStub extends PolicyTagManagerSerializationStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonPolicyTagManagerStub.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonPolicyTagManagerStub.java
index b79e95b82d04..de953c5840c0 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonPolicyTagManagerStub.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/HttpJsonPolicyTagManagerStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPolicyTagManagerStub extends PolicyTagManagerStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/PolicyTagManagerSerializationStub.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/PolicyTagManagerSerializationStub.java
index 8fe071b04a09..fad16076cddc 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/PolicyTagManagerSerializationStub.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/PolicyTagManagerSerializationStub.java
@@ -25,6 +25,7 @@
 import com.google.cloud.datacatalog.v1.ReplaceTaxonomyRequest;
 import com.google.cloud.datacatalog.v1.Taxonomy;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PolicyTagManagerSerializationStub implements BackgroundResource {
 
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/PolicyTagManagerSerializationStubSettings.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/PolicyTagManagerSerializationStubSettings.java
index bec310c285db..9c0d4cfc9dcf 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/PolicyTagManagerSerializationStubSettings.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/PolicyTagManagerSerializationStubSettings.java
@@ -50,6 +50,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PolicyTagManagerSerializationStubSettings
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/PolicyTagManagerStub.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/PolicyTagManagerStub.java
index 009f6caf4e7d..4c83f749dea9 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/PolicyTagManagerStub.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/PolicyTagManagerStub.java
@@ -42,6 +42,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PolicyTagManagerStub implements BackgroundResource {
 
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/PolicyTagManagerStubSettings.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/PolicyTagManagerStubSettings.java
index 8798444baf6d..ec7d2580afc5 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/PolicyTagManagerStubSettings.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1/stub/PolicyTagManagerStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PolicyTagManagerStubSettings extends StubSettings<PolicyTagManagerStubSettings> {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/DataCatalogClient.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/DataCatalogClient.java
index 5d10325ff27f..bb4a4809ca1a 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/DataCatalogClient.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/DataCatalogClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -670,6 +671,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @BetaApi
 @Deprecated
 @Generated("by gapic-generator-java")
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/DataCatalogSettings.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/DataCatalogSettings.java
index d34b5e70c6ab..4afe9a0961e6 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/DataCatalogSettings.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/DataCatalogSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -95,6 +96,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @BetaApi
 @Deprecated
 @Generated("by gapic-generator-java")
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagManagerClient.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagManagerClient.java
index e9034a16c96a..234443ae8e6e 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagManagerClient.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagManagerClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -361,6 +362,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PolicyTagManagerClient implements BackgroundResource {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagManagerSerializationClient.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagManagerSerializationClient.java
index eab56462ab45..6fa0825d153b 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagManagerSerializationClient.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagManagerSerializationClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -149,6 +150,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PolicyTagManagerSerializationClient implements BackgroundResource {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagManagerSerializationSettings.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagManagerSerializationSettings.java
index e3ec21731cc5..f6d515ec56c6 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagManagerSerializationSettings.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagManagerSerializationSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PolicyTagManagerSerializationSettings
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagManagerSettings.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagManagerSettings.java
index 193cb90790b3..201dc71f18d2 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagManagerSettings.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagManagerSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PolicyTagManagerSettings extends ClientSettings<PolicyTagManagerSettings> {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/DataCatalogStub.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/DataCatalogStub.java
index e8c3c30d2e08..e925ca793db6 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/DataCatalogStub.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/DataCatalogStub.java
@@ -65,6 +65,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @BetaApi
 @Deprecated
 @Generated("by gapic-generator-java")
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/DataCatalogStubSettings.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/DataCatalogStubSettings.java
index 155744f9b29d..f654b29f4c20 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/DataCatalogStubSettings.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/DataCatalogStubSettings.java
@@ -97,6 +97,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @BetaApi
 @Deprecated
 @Generated("by gapic-generator-java")
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcDataCatalogCallableFactory.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcDataCatalogCallableFactory.java
index 61873fe0ca4d..50690c1324ce 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcDataCatalogCallableFactory.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcDataCatalogCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @BetaApi
 @Deprecated
 @Generated("by gapic-generator-java")
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcDataCatalogStub.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcDataCatalogStub.java
index 671b7694291c..df58c761b544 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcDataCatalogStub.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcDataCatalogStub.java
@@ -75,6 +75,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @BetaApi
 @Deprecated
 @Generated("by gapic-generator-java")
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcPolicyTagManagerCallableFactory.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcPolicyTagManagerCallableFactory.java
index 4b85d9925124..21b40158cf91 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcPolicyTagManagerCallableFactory.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcPolicyTagManagerCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPolicyTagManagerCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcPolicyTagManagerSerializationCallableFactory.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcPolicyTagManagerSerializationCallableFactory.java
index c397a2e52e0b..53f38d187255 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcPolicyTagManagerSerializationCallableFactory.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcPolicyTagManagerSerializationCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPolicyTagManagerSerializationCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcPolicyTagManagerSerializationStub.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcPolicyTagManagerSerializationStub.java
index e522301f6dac..4ec246cd9c08 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcPolicyTagManagerSerializationStub.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcPolicyTagManagerSerializationStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPolicyTagManagerSerializationStub extends PolicyTagManagerSerializationStub {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcPolicyTagManagerStub.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcPolicyTagManagerStub.java
index 049af30e68da..21323599de8e 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcPolicyTagManagerStub.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/GrpcPolicyTagManagerStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPolicyTagManagerStub extends PolicyTagManagerStub {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonDataCatalogCallableFactory.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonDataCatalogCallableFactory.java
index fdf49eaf06aa..73ce072302eb 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonDataCatalogCallableFactory.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonDataCatalogCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @BetaApi
 @Deprecated
 @Generated("by gapic-generator-java")
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonDataCatalogStub.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonDataCatalogStub.java
index 455e7c5e4b20..e7050be2e484 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonDataCatalogStub.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonDataCatalogStub.java
@@ -82,6 +82,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @BetaApi
 @Deprecated
 @Generated("by gapic-generator-java")
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonPolicyTagManagerCallableFactory.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonPolicyTagManagerCallableFactory.java
index 6a3a988b4629..af4cc9b7e222 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonPolicyTagManagerCallableFactory.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonPolicyTagManagerCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPolicyTagManagerCallableFactory
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonPolicyTagManagerSerializationCallableFactory.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonPolicyTagManagerSerializationCallableFactory.java
index 236283eb58c3..2af740c0db77 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonPolicyTagManagerSerializationCallableFactory.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonPolicyTagManagerSerializationCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPolicyTagManagerSerializationCallableFactory
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonPolicyTagManagerSerializationStub.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonPolicyTagManagerSerializationStub.java
index 48c7bd2808f2..92ad15657e4a 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonPolicyTagManagerSerializationStub.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonPolicyTagManagerSerializationStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPolicyTagManagerSerializationStub extends PolicyTagManagerSerializationStub {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonPolicyTagManagerStub.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonPolicyTagManagerStub.java
index 56a81568a6a6..2f3593b38d97 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonPolicyTagManagerStub.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/HttpJsonPolicyTagManagerStub.java
@@ -60,6 +60,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPolicyTagManagerStub extends PolicyTagManagerStub {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/PolicyTagManagerSerializationStub.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/PolicyTagManagerSerializationStub.java
index 43de9a32d2b4..ee495c767528 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/PolicyTagManagerSerializationStub.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/PolicyTagManagerSerializationStub.java
@@ -24,6 +24,7 @@
 import com.google.cloud.datacatalog.v1beta1.ImportTaxonomiesRequest;
 import com.google.cloud.datacatalog.v1beta1.ImportTaxonomiesResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PolicyTagManagerSerializationStub implements BackgroundResource {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/PolicyTagManagerSerializationStubSettings.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/PolicyTagManagerSerializationStubSettings.java
index 813dbf219011..8118f55389bb 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/PolicyTagManagerSerializationStubSettings.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/PolicyTagManagerSerializationStubSettings.java
@@ -48,6 +48,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/PolicyTagManagerStub.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/PolicyTagManagerStub.java
index 6b28b6c5d4c6..ff90c29fbed4 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/PolicyTagManagerStub.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/PolicyTagManagerStub.java
@@ -43,6 +43,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PolicyTagManagerStub implements BackgroundResource {
diff --git a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/PolicyTagManagerStubSettings.java b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/PolicyTagManagerStubSettings.java
index 6a72bf1c89da..55365fc36c42 100644
--- a/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/PolicyTagManagerStubSettings.java
+++ b/java-datacatalog/google-cloud-datacatalog/src/main/java/com/google/cloud/datacatalog/v1beta1/stub/PolicyTagManagerStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/EntryGroupName.java b/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/EntryGroupName.java
index dafe8083af0a..1665e3085d9b 100644
--- a/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/EntryGroupName.java
+++ b/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/EntryGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntryGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENTRY_GROUP =
diff --git a/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/EntryName.java b/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/EntryName.java
index d1407639b472..be7f40737ecd 100644
--- a/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/EntryName.java
+++ b/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/EntryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENTRY_GROUP_ENTRY =
diff --git a/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/LocationName.java b/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/LocationName.java
index 4cd3e9439a67..6a6e74b851d6 100644
--- a/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/LocationName.java
+++ b/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagName.java b/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagName.java
index 0dbfd8b0b24c..ea82e88f187f 100644
--- a/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagName.java
+++ b/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/PolicyTagName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyTagName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TAXONOMY_POLICY_TAG =
diff --git a/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TagName.java b/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TagName.java
index f3e5fa217149..72f0422e88d7 100644
--- a/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TagName.java
+++ b/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TagName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENTRY_GROUP_ENTRY_TAG =
diff --git a/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TagTemplateFieldEnumValueName.java b/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TagTemplateFieldEnumValueName.java
index 9eaafe5f3435..9834a60212a8 100644
--- a/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TagTemplateFieldEnumValueName.java
+++ b/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TagTemplateFieldEnumValueName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagTemplateFieldEnumValueName implements ResourceName {
   private static final PathTemplate
diff --git a/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TagTemplateFieldName.java b/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TagTemplateFieldName.java
index fbfd15d78d3a..c4731fd4f250 100644
--- a/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TagTemplateFieldName.java
+++ b/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TagTemplateFieldName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagTemplateFieldName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TAG_TEMPLATE_FIELD =
diff --git a/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TagTemplateName.java b/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TagTemplateName.java
index d675c8642ddd..b29f898d4fc8 100644
--- a/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TagTemplateName.java
+++ b/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TagTemplateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagTemplateName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TAG_TEMPLATE =
diff --git a/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TaxonomyName.java b/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TaxonomyName.java
index 38f7a1062e13..9b0e26d97d1c 100644
--- a/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TaxonomyName.java
+++ b/java-datacatalog/proto-google-cloud-datacatalog-v1/src/main/java/com/google/cloud/datacatalog/v1/TaxonomyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TaxonomyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TAXONOMY =
diff --git a/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/EntryGroupName.java b/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/EntryGroupName.java
index ec716f6f8ca4..e23f5dc90e2a 100644
--- a/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/EntryGroupName.java
+++ b/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/EntryGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntryGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENTRY_GROUP =
diff --git a/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/EntryName.java b/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/EntryName.java
index 548097b8bc86..5ebfce5eb35d 100644
--- a/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/EntryName.java
+++ b/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/EntryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENTRY_GROUP_ENTRY =
diff --git a/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/LocationName.java b/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/LocationName.java
index b55ca90cbb14..afdda899af36 100644
--- a/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/LocationName.java
+++ b/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagName.java b/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagName.java
index dd35d4f45a21..40b3cfcb58d3 100644
--- a/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagName.java
+++ b/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/PolicyTagName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyTagName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TAXONOMY_POLICY_TAG =
diff --git a/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TagName.java b/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TagName.java
index 60ed06689485..1ce5839ba993 100644
--- a/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TagName.java
+++ b/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TagName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENTRY_GROUP_ENTRY_TAG =
diff --git a/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TagTemplateFieldEnumValueName.java b/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TagTemplateFieldEnumValueName.java
index a2f583d12ed7..aaa500bcfb07 100644
--- a/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TagTemplateFieldEnumValueName.java
+++ b/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TagTemplateFieldEnumValueName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagTemplateFieldEnumValueName implements ResourceName {
   private static final PathTemplate
diff --git a/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TagTemplateFieldName.java b/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TagTemplateFieldName.java
index 6f5ac5325c4b..72dce8231df9 100644
--- a/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TagTemplateFieldName.java
+++ b/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TagTemplateFieldName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagTemplateFieldName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TAG_TEMPLATE_FIELD =
diff --git a/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TagTemplateName.java b/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TagTemplateName.java
index ea16d3856e20..64f7d1881eb7 100644
--- a/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TagTemplateName.java
+++ b/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TagTemplateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagTemplateName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TAG_TEMPLATE =
diff --git a/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TaxonomyName.java b/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TaxonomyName.java
index feb838a5e40d..2765272d4e8b 100644
--- a/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TaxonomyName.java
+++ b/java-datacatalog/proto-google-cloud-datacatalog-v1beta1/src/main/java/com/google/cloud/datacatalog/v1beta1/TaxonomyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TaxonomyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TAXONOMY =
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/FlexTemplatesServiceClient.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/FlexTemplatesServiceClient.java
index da44a99cc18d..0660cc44732d 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/FlexTemplatesServiceClient.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/FlexTemplatesServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -134,6 +135,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FlexTemplatesServiceClient implements BackgroundResource {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/FlexTemplatesServiceSettings.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/FlexTemplatesServiceSettings.java
index a6dfdd784c2d..698cfcfd5877 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/FlexTemplatesServiceSettings.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/FlexTemplatesServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FlexTemplatesServiceSettings extends ClientSettings<FlexTemplatesServiceSettings> {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/JobsV1Beta3Client.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/JobsV1Beta3Client.java
index 59842d42e439..25ac585b1101 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/JobsV1Beta3Client.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/JobsV1Beta3Client.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -231,6 +232,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class JobsV1Beta3Client implements BackgroundResource {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/JobsV1Beta3Settings.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/JobsV1Beta3Settings.java
index 67e9b081cdb9..6a71165cfea2 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/JobsV1Beta3Settings.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/JobsV1Beta3Settings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class JobsV1Beta3Settings extends ClientSettings<JobsV1Beta3Settings> {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/MessagesV1Beta3Client.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/MessagesV1Beta3Client.java
index b73289a3f195..0d01ce9ef00b 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/MessagesV1Beta3Client.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/MessagesV1Beta3Client.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -149,6 +150,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MessagesV1Beta3Client implements BackgroundResource {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/MessagesV1Beta3Settings.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/MessagesV1Beta3Settings.java
index f51cd9a49db2..d6ff763a2bc6 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/MessagesV1Beta3Settings.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/MessagesV1Beta3Settings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MessagesV1Beta3Settings extends ClientSettings<MessagesV1Beta3Settings> {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/MetricsV1Beta3Client.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/MetricsV1Beta3Client.java
index 7a545775b1e1..1bb3e51d8c74 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/MetricsV1Beta3Client.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/MetricsV1Beta3Client.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -170,6 +171,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MetricsV1Beta3Client implements BackgroundResource {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/MetricsV1Beta3Settings.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/MetricsV1Beta3Settings.java
index 52b335969cfc..65087688bf44 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/MetricsV1Beta3Settings.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/MetricsV1Beta3Settings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MetricsV1Beta3Settings extends ClientSettings<MetricsV1Beta3Settings> {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/SnapshotsV1Beta3Client.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/SnapshotsV1Beta3Client.java
index 164eb1d180a6..3f6f04428b3d 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/SnapshotsV1Beta3Client.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/SnapshotsV1Beta3Client.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -160,6 +161,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SnapshotsV1Beta3Client implements BackgroundResource {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/SnapshotsV1Beta3Settings.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/SnapshotsV1Beta3Settings.java
index 97bb8e097aa4..91fe3b4f0fc7 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/SnapshotsV1Beta3Settings.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/SnapshotsV1Beta3Settings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SnapshotsV1Beta3Settings extends ClientSettings<SnapshotsV1Beta3Settings> {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/TemplatesServiceClient.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/TemplatesServiceClient.java
index 7d81dfebd9ad..d7b205b5f0ec 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/TemplatesServiceClient.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/TemplatesServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -165,6 +166,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TemplatesServiceClient implements BackgroundResource {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/TemplatesServiceSettings.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/TemplatesServiceSettings.java
index cba2704023fd..f5b56784717e 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/TemplatesServiceSettings.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/TemplatesServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TemplatesServiceSettings extends ClientSettings<TemplatesServiceSettings> {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/FlexTemplatesServiceStub.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/FlexTemplatesServiceStub.java
index 4001bb0658f6..2377928bf1cc 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/FlexTemplatesServiceStub.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/FlexTemplatesServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.dataflow.v1beta3.LaunchFlexTemplateRequest;
 import com.google.dataflow.v1beta3.LaunchFlexTemplateResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class FlexTemplatesServiceStub implements BackgroundResource {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/FlexTemplatesServiceStubSettings.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/FlexTemplatesServiceStubSettings.java
index 4c56347c74bf..8595682e40b7 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/FlexTemplatesServiceStubSettings.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/FlexTemplatesServiceStubSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcFlexTemplatesServiceCallableFactory.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcFlexTemplatesServiceCallableFactory.java
index 1cf991d26cbe..cef5fba8eeb5 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcFlexTemplatesServiceCallableFactory.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcFlexTemplatesServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFlexTemplatesServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcFlexTemplatesServiceStub.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcFlexTemplatesServiceStub.java
index f40a93480c53..cb63952c09f9 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcFlexTemplatesServiceStub.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcFlexTemplatesServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFlexTemplatesServiceStub extends FlexTemplatesServiceStub {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcJobsV1Beta3CallableFactory.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcJobsV1Beta3CallableFactory.java
index 98286541296f..87e13ea489a3 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcJobsV1Beta3CallableFactory.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcJobsV1Beta3CallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcJobsV1Beta3CallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcJobsV1Beta3Stub.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcJobsV1Beta3Stub.java
index bdc64128eea0..ddf195d43b49 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcJobsV1Beta3Stub.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcJobsV1Beta3Stub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcJobsV1Beta3Stub extends JobsV1Beta3Stub {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcMessagesV1Beta3CallableFactory.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcMessagesV1Beta3CallableFactory.java
index 8eff955621d7..3f69dfcaae77 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcMessagesV1Beta3CallableFactory.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcMessagesV1Beta3CallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMessagesV1Beta3CallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcMessagesV1Beta3Stub.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcMessagesV1Beta3Stub.java
index 730a01dc81fb..fa3a27fd1e59 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcMessagesV1Beta3Stub.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcMessagesV1Beta3Stub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMessagesV1Beta3Stub extends MessagesV1Beta3Stub {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcMetricsV1Beta3CallableFactory.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcMetricsV1Beta3CallableFactory.java
index 41460a5d99c9..82d0f06d4f4d 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcMetricsV1Beta3CallableFactory.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcMetricsV1Beta3CallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMetricsV1Beta3CallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcMetricsV1Beta3Stub.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcMetricsV1Beta3Stub.java
index 9540295bef84..5479852a4b78 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcMetricsV1Beta3Stub.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcMetricsV1Beta3Stub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMetricsV1Beta3Stub extends MetricsV1Beta3Stub {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcSnapshotsV1Beta3CallableFactory.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcSnapshotsV1Beta3CallableFactory.java
index f062809b9e4c..c7179cd9b289 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcSnapshotsV1Beta3CallableFactory.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcSnapshotsV1Beta3CallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSnapshotsV1Beta3CallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcSnapshotsV1Beta3Stub.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcSnapshotsV1Beta3Stub.java
index 93e0312f942a..fbd733625f41 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcSnapshotsV1Beta3Stub.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcSnapshotsV1Beta3Stub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSnapshotsV1Beta3Stub extends SnapshotsV1Beta3Stub {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcTemplatesServiceCallableFactory.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcTemplatesServiceCallableFactory.java
index 5cdc8a25d5b2..892ebc57219c 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcTemplatesServiceCallableFactory.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcTemplatesServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTemplatesServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcTemplatesServiceStub.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcTemplatesServiceStub.java
index 92bd7302f29b..14be0cbb6204 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcTemplatesServiceStub.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/GrpcTemplatesServiceStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTemplatesServiceStub extends TemplatesServiceStub {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonFlexTemplatesServiceCallableFactory.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonFlexTemplatesServiceCallableFactory.java
index 74a290997cec..dd482eeec76e 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonFlexTemplatesServiceCallableFactory.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonFlexTemplatesServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonFlexTemplatesServiceCallableFactory
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonFlexTemplatesServiceStub.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonFlexTemplatesServiceStub.java
index bdd44f8d1a07..a95f8ac3d0c5 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonFlexTemplatesServiceStub.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonFlexTemplatesServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonFlexTemplatesServiceStub extends FlexTemplatesServiceStub {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonJobsV1Beta3CallableFactory.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonJobsV1Beta3CallableFactory.java
index 5c5b6da3eac3..12f45fbf638f 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonJobsV1Beta3CallableFactory.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonJobsV1Beta3CallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonJobsV1Beta3CallableFactory
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonJobsV1Beta3Stub.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonJobsV1Beta3Stub.java
index e08541329c3e..62d27bbf0c56 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonJobsV1Beta3Stub.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonJobsV1Beta3Stub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonJobsV1Beta3Stub extends JobsV1Beta3Stub {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonMessagesV1Beta3CallableFactory.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonMessagesV1Beta3CallableFactory.java
index 87c0cf2fae9d..b8e8d0eb0222 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonMessagesV1Beta3CallableFactory.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonMessagesV1Beta3CallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMessagesV1Beta3CallableFactory
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonMessagesV1Beta3Stub.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonMessagesV1Beta3Stub.java
index 62234af2043c..4077ae68604b 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonMessagesV1Beta3Stub.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonMessagesV1Beta3Stub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMessagesV1Beta3Stub extends MessagesV1Beta3Stub {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonMetricsV1Beta3CallableFactory.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonMetricsV1Beta3CallableFactory.java
index 62eb21a7df0d..81f0b282d8ac 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonMetricsV1Beta3CallableFactory.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonMetricsV1Beta3CallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMetricsV1Beta3CallableFactory
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonMetricsV1Beta3Stub.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonMetricsV1Beta3Stub.java
index a7241ddf5d90..719b9289aca0 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonMetricsV1Beta3Stub.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonMetricsV1Beta3Stub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMetricsV1Beta3Stub extends MetricsV1Beta3Stub {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonSnapshotsV1Beta3CallableFactory.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonSnapshotsV1Beta3CallableFactory.java
index 42d40f916b14..e62e4f299362 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonSnapshotsV1Beta3CallableFactory.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonSnapshotsV1Beta3CallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSnapshotsV1Beta3CallableFactory
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonSnapshotsV1Beta3Stub.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonSnapshotsV1Beta3Stub.java
index c1b09ebc612f..f3b4b619cae5 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonSnapshotsV1Beta3Stub.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonSnapshotsV1Beta3Stub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSnapshotsV1Beta3Stub extends SnapshotsV1Beta3Stub {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonTemplatesServiceCallableFactory.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonTemplatesServiceCallableFactory.java
index ae5c2ea684b8..ca3576313a5b 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonTemplatesServiceCallableFactory.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonTemplatesServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTemplatesServiceCallableFactory
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonTemplatesServiceStub.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonTemplatesServiceStub.java
index af7494576bc8..2621d232bee0 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonTemplatesServiceStub.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/HttpJsonTemplatesServiceStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTemplatesServiceStub extends TemplatesServiceStub {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/JobsV1Beta3Stub.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/JobsV1Beta3Stub.java
index be670f9ad68b..123720ae2681 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/JobsV1Beta3Stub.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/JobsV1Beta3Stub.java
@@ -33,6 +33,7 @@
 import com.google.dataflow.v1beta3.SnapshotJobRequest;
 import com.google.dataflow.v1beta3.UpdateJobRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class JobsV1Beta3Stub implements BackgroundResource {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/JobsV1Beta3StubSettings.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/JobsV1Beta3StubSettings.java
index fc365ff359b4..ef2151da244f 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/JobsV1Beta3StubSettings.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/JobsV1Beta3StubSettings.java
@@ -64,6 +64,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/MessagesV1Beta3Stub.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/MessagesV1Beta3Stub.java
index 89b27f000ed4..f9cf6dd84fd8 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/MessagesV1Beta3Stub.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/MessagesV1Beta3Stub.java
@@ -24,6 +24,7 @@
 import com.google.dataflow.v1beta3.ListJobMessagesRequest;
 import com.google.dataflow.v1beta3.ListJobMessagesResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class MessagesV1Beta3Stub implements BackgroundResource {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/MessagesV1Beta3StubSettings.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/MessagesV1Beta3StubSettings.java
index 67a35504e506..c6f55fbc8b0d 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/MessagesV1Beta3StubSettings.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/MessagesV1Beta3StubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/MetricsV1Beta3Stub.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/MetricsV1Beta3Stub.java
index a22e0513cc0c..cc2989a6ebf7 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/MetricsV1Beta3Stub.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/MetricsV1Beta3Stub.java
@@ -29,6 +29,7 @@
 import com.google.dataflow.v1beta3.JobMetrics;
 import com.google.dataflow.v1beta3.StageExecutionDetails;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class MetricsV1Beta3Stub implements BackgroundResource {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/MetricsV1Beta3StubSettings.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/MetricsV1Beta3StubSettings.java
index ae6f606f77fb..bbd39adba4f3 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/MetricsV1Beta3StubSettings.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/MetricsV1Beta3StubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/SnapshotsV1Beta3Stub.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/SnapshotsV1Beta3Stub.java
index 12e4f34e6a6f..478c1d41a856 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/SnapshotsV1Beta3Stub.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/SnapshotsV1Beta3Stub.java
@@ -26,6 +26,7 @@
 import com.google.dataflow.v1beta3.ListSnapshotsResponse;
 import com.google.dataflow.v1beta3.Snapshot;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SnapshotsV1Beta3Stub implements BackgroundResource {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/SnapshotsV1Beta3StubSettings.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/SnapshotsV1Beta3StubSettings.java
index a5ec13250e13..9e6c4db98932 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/SnapshotsV1Beta3StubSettings.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/SnapshotsV1Beta3StubSettings.java
@@ -50,6 +50,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/TemplatesServiceStub.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/TemplatesServiceStub.java
index 27d2ea9acf8c..0d824f5301c9 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/TemplatesServiceStub.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/TemplatesServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.dataflow.v1beta3.LaunchTemplateRequest;
 import com.google.dataflow.v1beta3.LaunchTemplateResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class TemplatesServiceStub implements BackgroundResource {
diff --git a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/TemplatesServiceStubSettings.java b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/TemplatesServiceStubSettings.java
index 0db1f5b38cae..c90678993add 100644
--- a/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/TemplatesServiceStubSettings.java
+++ b/java-dataflow/google-cloud-dataflow/src/main/java/com/google/dataflow/v1beta3/stub/TemplatesServiceStubSettings.java
@@ -50,6 +50,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/DataformClient.java b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/DataformClient.java
index 1bb4f2d48332..5507d8ca73c7 100644
--- a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/DataformClient.java
+++ b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/DataformClient.java
@@ -48,6 +48,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1428,6 +1429,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataformClient implements BackgroundResource {
   private final DataformSettings settings;
diff --git a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/DataformSettings.java b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/DataformSettings.java
index 1a9315b02b34..e45d22ae7d9b 100644
--- a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/DataformSettings.java
+++ b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/DataformSettings.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataformSettings extends ClientSettings<DataformSettings> {
 
diff --git a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/DataformStub.java b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/DataformStub.java
index 132c534557f1..ba226871c40e 100644
--- a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/DataformStub.java
+++ b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/DataformStub.java
@@ -168,6 +168,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -175,6 +176,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataformStub implements BackgroundResource {
 
diff --git a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/DataformStubSettings.java b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/DataformStubSettings.java
index a1f807a29be4..7579ea8beab7 100644
--- a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/DataformStubSettings.java
+++ b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/DataformStubSettings.java
@@ -207,6 +207,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -282,6 +283,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataformStubSettings extends StubSettings<DataformStubSettings> {
diff --git a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/GrpcDataformCallableFactory.java b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/GrpcDataformCallableFactory.java
index 22e5cc7ff118..61dc5ab2ef2e 100644
--- a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/GrpcDataformCallableFactory.java
+++ b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/GrpcDataformCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataformCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/GrpcDataformStub.java b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/GrpcDataformStub.java
index 9cc95b99e6ef..ec0676efe571 100644
--- a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/GrpcDataformStub.java
+++ b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/GrpcDataformStub.java
@@ -177,6 +177,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -184,6 +185,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataformStub extends DataformStub {
   private static final MethodDescriptor<GetTeamFolderRequest, TeamFolder>
diff --git a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/HttpJsonDataformCallableFactory.java b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/HttpJsonDataformCallableFactory.java
index 1f76e60fcda4..fd88084abd53 100644
--- a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/HttpJsonDataformCallableFactory.java
+++ b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/HttpJsonDataformCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataformCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/HttpJsonDataformStub.java b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/HttpJsonDataformStub.java
index 43b09613460f..407e89dccf67 100644
--- a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/HttpJsonDataformStub.java
+++ b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1/stub/HttpJsonDataformStub.java
@@ -188,6 +188,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -195,6 +196,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataformStub extends DataformStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/DataformClient.java b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/DataformClient.java
index 0427ab814d13..f0b21f1c86a8 100644
--- a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/DataformClient.java
+++ b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/DataformClient.java
@@ -48,6 +48,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1447,6 +1448,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataformClient implements BackgroundResource {
diff --git a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/DataformSettings.java b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/DataformSettings.java
index a3bc9e4896bb..c11920526b83 100644
--- a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/DataformSettings.java
+++ b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/DataformSettings.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataformSettings extends ClientSettings<DataformSettings> {
diff --git a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/DataformStub.java b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/DataformStub.java
index 94867f323a4f..d830a40341f2 100644
--- a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/DataformStub.java
+++ b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/DataformStub.java
@@ -172,6 +172,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -179,6 +180,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DataformStub implements BackgroundResource {
diff --git a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/DataformStubSettings.java b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/DataformStubSettings.java
index 55c7d28671c6..210b1ec6f8ba 100644
--- a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/DataformStubSettings.java
+++ b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/DataformStubSettings.java
@@ -210,6 +210,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -285,6 +286,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/GrpcDataformCallableFactory.java b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/GrpcDataformCallableFactory.java
index dd81ee0a67ff..31167a69b7f0 100644
--- a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/GrpcDataformCallableFactory.java
+++ b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/GrpcDataformCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataformCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/GrpcDataformStub.java b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/GrpcDataformStub.java
index c861f6a238d1..42581d5ed793 100644
--- a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/GrpcDataformStub.java
+++ b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/GrpcDataformStub.java
@@ -181,6 +181,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -188,6 +189,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataformStub extends DataformStub {
diff --git a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/HttpJsonDataformCallableFactory.java b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/HttpJsonDataformCallableFactory.java
index bf43e02cefc2..6d6849d76e89 100644
--- a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/HttpJsonDataformCallableFactory.java
+++ b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/HttpJsonDataformCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataformCallableFactory
diff --git a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/HttpJsonDataformStub.java b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/HttpJsonDataformStub.java
index 2a62a137e52c..9410a464add7 100644
--- a/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/HttpJsonDataformStub.java
+++ b/java-dataform/google-cloud-dataform/src/main/java/com/google/cloud/dataform/v1beta1/stub/HttpJsonDataformStub.java
@@ -192,6 +192,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -199,6 +200,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataformStub extends DataformStub {
diff --git a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/CompilationResultName.java b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/CompilationResultName.java
index d4f8bf6e4d24..18d09218c5bc 100644
--- a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/CompilationResultName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/CompilationResultName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompilationResultName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_COMPILATION_RESULT =
diff --git a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/ConfigName.java b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/ConfigName.java
index 14a14ac6d87e..8ef3214a502a 100644
--- a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/ConfigName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/ConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/FolderName.java b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/FolderName.java
index 1b355a0e18d8..341c58fc0e5a 100644
--- a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/FolderName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/FolderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FOLDER =
diff --git a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/LocationName.java b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/LocationName.java
index d8c0cbfacf34..de6b949338e6 100644
--- a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/LocationName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/ReleaseConfigName.java b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/ReleaseConfigName.java
index 46a46ff7b745..52b178f3f5ef 100644
--- a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/ReleaseConfigName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/ReleaseConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReleaseConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_RELEASE_CONFIG =
diff --git a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/RepositoryName.java b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/RepositoryName.java
index 7723e978bf63..532eeb8661f7 100644
--- a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/RepositoryName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/RepositoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RepositoryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY =
diff --git a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/TeamFolderName.java b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/TeamFolderName.java
index 33a9ea5140c3..65f624a6f2b4 100644
--- a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/TeamFolderName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/TeamFolderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TeamFolderName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TEAM_FOLDER =
diff --git a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/WorkflowConfigName.java b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/WorkflowConfigName.java
index bf4c9cc691d0..1dc57ac341d5 100644
--- a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/WorkflowConfigName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/WorkflowConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkflowConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_WORKFLOW_CONFIG =
diff --git a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/WorkflowInvocationName.java b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/WorkflowInvocationName.java
index d0038bfc8c7e..9f396735171c 100644
--- a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/WorkflowInvocationName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/WorkflowInvocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkflowInvocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_WORKFLOW_INVOCATION =
diff --git a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/WorkspaceName.java b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/WorkspaceName.java
index fc478768c3cf..3b9370e4c55a 100644
--- a/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/WorkspaceName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1/src/main/java/com/google/cloud/dataform/v1/WorkspaceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkspaceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_WORKSPACE =
diff --git a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/CompilationResultName.java b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/CompilationResultName.java
index 737fb23e59e5..8d258f034226 100644
--- a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/CompilationResultName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/CompilationResultName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompilationResultName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_COMPILATION_RESULT =
diff --git a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/ConfigName.java b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/ConfigName.java
index 4ddbcf234fc4..c2c80e8f8784 100644
--- a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/ConfigName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/ConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/FolderName.java b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/FolderName.java
index a4f1be53541b..1f78edbd86f4 100644
--- a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/FolderName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/FolderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FOLDER =
diff --git a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/LocationName.java b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/LocationName.java
index 041a94d1d922..61b420abc8d6 100644
--- a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/LocationName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/ReleaseConfigName.java b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/ReleaseConfigName.java
index 63a7822e3e2e..b78e76e31630 100644
--- a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/ReleaseConfigName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/ReleaseConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReleaseConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_RELEASE_CONFIG =
diff --git a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/RepositoryName.java b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/RepositoryName.java
index 2abed00905c3..71efa94064f7 100644
--- a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/RepositoryName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/RepositoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RepositoryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY =
diff --git a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/TeamFolderName.java b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/TeamFolderName.java
index eba8ebae8277..0933816f5cb2 100644
--- a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/TeamFolderName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/TeamFolderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TeamFolderName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TEAM_FOLDER =
diff --git a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/WorkflowConfigName.java b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/WorkflowConfigName.java
index adcb1ba4e166..827806ee7719 100644
--- a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/WorkflowConfigName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/WorkflowConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkflowConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_WORKFLOW_CONFIG =
diff --git a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/WorkflowInvocationName.java b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/WorkflowInvocationName.java
index b28ee1e5ad24..ced129340c51 100644
--- a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/WorkflowInvocationName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/WorkflowInvocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkflowInvocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_WORKFLOW_INVOCATION =
diff --git a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/WorkspaceName.java b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/WorkspaceName.java
index d14a14c36ef7..3a95e893bd04 100644
--- a/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/WorkspaceName.java
+++ b/java-dataform/proto-google-cloud-dataform-v1beta1/src/main/java/com/google/cloud/dataform/v1beta1/WorkspaceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkspaceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_WORKSPACE =
diff --git a/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/DataLabelingServiceClient.java b/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/DataLabelingServiceClient.java
index ff55e27f5aa5..6b510651a6eb 100644
--- a/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/DataLabelingServiceClient.java
+++ b/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/DataLabelingServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -771,6 +772,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataLabelingServiceClient implements BackgroundResource {
diff --git a/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/DataLabelingServiceSettings.java b/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/DataLabelingServiceSettings.java
index a07c70a0e336..7bfbb0feef2d 100644
--- a/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/DataLabelingServiceSettings.java
+++ b/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/DataLabelingServiceSettings.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataLabelingServiceSettings extends ClientSettings<DataLabelingServiceSettings> {
diff --git a/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/stub/DataLabelingServiceStub.java b/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/stub/DataLabelingServiceStub.java
index c28f1a750f03..93ca206ec989 100644
--- a/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/stub/DataLabelingServiceStub.java
+++ b/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/stub/DataLabelingServiceStub.java
@@ -91,6 +91,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DataLabelingServiceStub implements BackgroundResource {
diff --git a/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/stub/DataLabelingServiceStubSettings.java b/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/stub/DataLabelingServiceStubSettings.java
index 1b9c8874528d..7fc6a6640497 100644
--- a/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/stub/DataLabelingServiceStubSettings.java
+++ b/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/stub/DataLabelingServiceStubSettings.java
@@ -121,6 +121,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -199,6 +200,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/stub/GrpcDataLabelingServiceCallableFactory.java b/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/stub/GrpcDataLabelingServiceCallableFactory.java
index 3bc75d643766..0152548adee1 100644
--- a/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/stub/GrpcDataLabelingServiceCallableFactory.java
+++ b/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/stub/GrpcDataLabelingServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataLabelingServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/stub/GrpcDataLabelingServiceStub.java b/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/stub/GrpcDataLabelingServiceStub.java
index cef1bd2117bf..2c5d02e06335 100644
--- a/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/stub/GrpcDataLabelingServiceStub.java
+++ b/java-datalabeling/google-cloud-datalabeling/src/main/java/com/google/cloud/datalabeling/v1beta1/stub/GrpcDataLabelingServiceStub.java
@@ -100,6 +100,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataLabelingServiceStub extends DataLabelingServiceStub {
diff --git a/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/AnnotatedDatasetName.java b/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/AnnotatedDatasetName.java
index fce3575b42f9..08cf6f9dba7e 100644
--- a/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/AnnotatedDatasetName.java
+++ b/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/AnnotatedDatasetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnnotatedDatasetName implements ResourceName {
   private static final PathTemplate PROJECT_DATASET_ANNOTATED_DATASET =
diff --git a/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/AnnotationSpecSetName.java b/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/AnnotationSpecSetName.java
index 15095043f8d9..d08aee134391 100644
--- a/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/AnnotationSpecSetName.java
+++ b/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/AnnotationSpecSetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnnotationSpecSetName implements ResourceName {
   private static final PathTemplate PROJECT_ANNOTATION_SPEC_SET =
diff --git a/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/DataItemName.java b/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/DataItemName.java
index a370df1be232..75b776b542e7 100644
--- a/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/DataItemName.java
+++ b/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/DataItemName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataItemName implements ResourceName {
   private static final PathTemplate PROJECT_DATASET_DATA_ITEM =
diff --git a/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/DatasetName.java b/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/DatasetName.java
index 4c1d41c30dd8..2f5488a43da4 100644
--- a/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/DatasetName.java
+++ b/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/DatasetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatasetName implements ResourceName {
   private static final PathTemplate PROJECT_DATASET =
diff --git a/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/EvaluationJobName.java b/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/EvaluationJobName.java
index 54ceb919d505..e0e4791037b0 100644
--- a/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/EvaluationJobName.java
+++ b/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/EvaluationJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EvaluationJobName implements ResourceName {
   private static final PathTemplate PROJECT_EVALUATION_JOB =
diff --git a/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/EvaluationName.java b/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/EvaluationName.java
index 4c770705f06a..11e6f6bbcc00 100644
--- a/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/EvaluationName.java
+++ b/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/EvaluationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EvaluationName implements ResourceName {
   private static final PathTemplate PROJECT_DATASET_EVALUATION =
diff --git a/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/ExampleName.java b/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/ExampleName.java
index 51ce53f9c2d7..c4d6ec9547ac 100644
--- a/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/ExampleName.java
+++ b/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/ExampleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExampleName implements ResourceName {
   private static final PathTemplate PROJECT_DATASET_ANNOTATED_DATASET_EXAMPLE =
diff --git a/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/InstructionName.java b/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/InstructionName.java
index f487de1daff6..278489fed13f 100644
--- a/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/InstructionName.java
+++ b/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/InstructionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstructionName implements ResourceName {
   private static final PathTemplate PROJECT_INSTRUCTION =
diff --git a/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/ProjectName.java b/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/ProjectName.java
index 87e978b9e8ad..968c1bbf166c 100644
--- a/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/ProjectName.java
+++ b/java-datalabeling/proto-google-cloud-datalabeling-v1beta1/src/main/java/com/google/cloud/datalabeling/v1beta1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/ConfigManagementServiceClient.java b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/ConfigManagementServiceClient.java
index cb4755f1b6ab..1ac1162df634 100644
--- a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/ConfigManagementServiceClient.java
+++ b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/ConfigManagementServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConfigManagementServiceClient implements BackgroundResource {
   private final ConfigManagementServiceSettings settings;
diff --git a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/ConfigManagementServiceSettings.java b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/ConfigManagementServiceSettings.java
index 9e081eb10f8a..2176c0143cc6 100644
--- a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/ConfigManagementServiceSettings.java
+++ b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/ConfigManagementServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConfigManagementServiceSettings
     extends ClientSettings<ConfigManagementServiceSettings> {
diff --git a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/ConfigManagementServiceStub.java b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/ConfigManagementServiceStub.java
index 6b429d7be236..ce941b50d39b 100644
--- a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/ConfigManagementServiceStub.java
+++ b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/ConfigManagementServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.datacatalog.lineage.configmanagement.v1.GetConfigRequest;
 import com.google.cloud.datacatalog.lineage.configmanagement.v1.UpdateConfigRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ConfigManagementServiceStub implements BackgroundResource {
 
diff --git a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/ConfigManagementServiceStubSettings.java b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/ConfigManagementServiceStubSettings.java
index 77630ba2eaa2..69fabcf83212 100644
--- a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/ConfigManagementServiceStubSettings.java
+++ b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/ConfigManagementServiceStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ConfigManagementServiceStubSettings
diff --git a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/GrpcConfigManagementServiceCallableFactory.java b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/GrpcConfigManagementServiceCallableFactory.java
index 414459e015e3..2ce1a821fe4a 100644
--- a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/GrpcConfigManagementServiceCallableFactory.java
+++ b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/GrpcConfigManagementServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConfigManagementServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/GrpcConfigManagementServiceStub.java b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/GrpcConfigManagementServiceStub.java
index da04bd529383..04d5f28395da 100644
--- a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/GrpcConfigManagementServiceStub.java
+++ b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/GrpcConfigManagementServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConfigManagementServiceStub extends ConfigManagementServiceStub {
   private static final MethodDescriptor<GetConfigRequest, Config> getConfigMethodDescriptor =
diff --git a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/HttpJsonConfigManagementServiceCallableFactory.java b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/HttpJsonConfigManagementServiceCallableFactory.java
index 861c98eaadd2..dc7e237508bd 100644
--- a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/HttpJsonConfigManagementServiceCallableFactory.java
+++ b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/HttpJsonConfigManagementServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConfigManagementServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/HttpJsonConfigManagementServiceStub.java b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/HttpJsonConfigManagementServiceStub.java
index 8ef8fac7e72f..861d0aa4888d 100644
--- a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/HttpJsonConfigManagementServiceStub.java
+++ b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/stub/HttpJsonConfigManagementServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConfigManagementServiceStub extends ConfigManagementServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/LineageClient.java b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/LineageClient.java
index 17dc625c63bf..e28824a1b110 100644
--- a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/LineageClient.java
+++ b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/LineageClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -468,6 +469,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LineageClient implements BackgroundResource {
   private final LineageSettings settings;
diff --git a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/LineageSettings.java b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/LineageSettings.java
index b8c6a257fff9..bc226d1d3943 100644
--- a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/LineageSettings.java
+++ b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/LineageSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LineageSettings extends ClientSettings<LineageSettings> {
 
diff --git a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/GrpcLineageCallableFactory.java b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/GrpcLineageCallableFactory.java
index a8134fdac540..5f3e4d689ae9 100644
--- a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/GrpcLineageCallableFactory.java
+++ b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/GrpcLineageCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLineageCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/GrpcLineageStub.java b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/GrpcLineageStub.java
index 850467534c71..74d109d27174 100644
--- a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/GrpcLineageStub.java
+++ b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/GrpcLineageStub.java
@@ -70,6 +70,7 @@
 import java.util.UUID;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLineageStub extends LineageStub {
   private static final MethodDescriptor<
diff --git a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/HttpJsonLineageCallableFactory.java b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/HttpJsonLineageCallableFactory.java
index c7a8ccd15b95..a18f345c9ed3 100644
--- a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/HttpJsonLineageCallableFactory.java
+++ b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/HttpJsonLineageCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLineageCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/HttpJsonLineageStub.java b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/HttpJsonLineageStub.java
index a9e58967b19f..017321ce3b8a 100644
--- a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/HttpJsonLineageStub.java
+++ b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/HttpJsonLineageStub.java
@@ -81,6 +81,7 @@
 import java.util.UUID;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLineageStub extends LineageStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/LineageStub.java b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/LineageStub.java
index f2da3afc42b1..ec0d554f5425 100644
--- a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/LineageStub.java
+++ b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/LineageStub.java
@@ -59,6 +59,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LineageStub implements BackgroundResource {
 
diff --git a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/LineageStubSettings.java b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/LineageStubSettings.java
index 20857b413ef1..9f8e4f1fb176 100644
--- a/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/LineageStubSettings.java
+++ b/java-datalineage/google-cloud-datalineage/src/main/java/com/google/cloud/datacatalog/lineage/v1/stub/LineageStubSettings.java
@@ -95,6 +95,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -170,6 +171,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LineageStubSettings extends StubSettings<LineageStubSettings> {
diff --git a/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/ConfigName.java b/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/ConfigName.java
index ffd82e176d70..c803725f1cf3 100644
--- a/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/ConfigName.java
+++ b/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/configmanagement/v1/ConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/v1/LineageEventName.java b/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/v1/LineageEventName.java
index adb7093ef7e0..855ebcc21ed8 100644
--- a/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/v1/LineageEventName.java
+++ b/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/v1/LineageEventName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LineageEventName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PROCESS_RUN_LINEAGE_EVENT =
diff --git a/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/v1/LocationName.java b/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/v1/LocationName.java
index 05ddcc543b34..86c9241c37b3 100644
--- a/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/v1/LocationName.java
+++ b/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/v1/ProcessName.java b/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/v1/ProcessName.java
index 330a1ca3de8b..a205d305a240 100644
--- a/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/v1/ProcessName.java
+++ b/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/v1/ProcessName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProcessName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PROCESS =
diff --git a/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/v1/RunName.java b/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/v1/RunName.java
index 06e16b3162b8..0e92852dcee9 100644
--- a/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/v1/RunName.java
+++ b/java-datalineage/proto-google-cloud-datalineage-v1/src/main/java/com/google/cloud/datacatalog/lineage/v1/RunName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RunName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PROCESS_RUN =
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/IngestionServiceClient.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/IngestionServiceClient.java
index 88b5c6c5999b..cca33a10550b 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/IngestionServiceClient.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/IngestionServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -193,6 +194,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IngestionServiceClient implements BackgroundResource {
   private final IngestionServiceSettings settings;
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/IngestionServiceSettings.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/IngestionServiceSettings.java
index 0ff50e96d9cc..1aa202c8e3db 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/IngestionServiceSettings.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/IngestionServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IngestionServiceSettings extends ClientSettings<IngestionServiceSettings> {
 
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/MarketingDataInsightsServiceClient.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/MarketingDataInsightsServiceClient.java
index 6346e4602622..a68ebb855403 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/MarketingDataInsightsServiceClient.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/MarketingDataInsightsServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -142,6 +143,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MarketingDataInsightsServiceClient implements BackgroundResource {
   private final MarketingDataInsightsServiceSettings settings;
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/MarketingDataInsightsServiceSettings.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/MarketingDataInsightsServiceSettings.java
index 494091e970ae..c238558ff987 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/MarketingDataInsightsServiceSettings.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/MarketingDataInsightsServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MarketingDataInsightsServiceSettings
     extends ClientSettings<MarketingDataInsightsServiceSettings> {
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/PartnerLinkServiceClient.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/PartnerLinkServiceClient.java
index 54ed9622065f..c2f4cb012224 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/PartnerLinkServiceClient.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/PartnerLinkServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -195,6 +196,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PartnerLinkServiceClient implements BackgroundResource {
   private final PartnerLinkServiceSettings settings;
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/PartnerLinkServiceSettings.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/PartnerLinkServiceSettings.java
index 26b738754278..4453c92a5654 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/PartnerLinkServiceSettings.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/PartnerLinkServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PartnerLinkServiceSettings extends ClientSettings<PartnerLinkServiceSettings> {
 
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListDirectLicenseServiceClient.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListDirectLicenseServiceClient.java
index 948636dfca5d..82b5970b48d0 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListDirectLicenseServiceClient.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListDirectLicenseServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -209,6 +210,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserListDirectLicenseServiceClient implements BackgroundResource {
   private final UserListDirectLicenseServiceSettings settings;
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListDirectLicenseServiceSettings.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListDirectLicenseServiceSettings.java
index 7f1f60ee76be..135948aef867 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListDirectLicenseServiceSettings.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListDirectLicenseServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserListDirectLicenseServiceSettings
     extends ClientSettings<UserListDirectLicenseServiceSettings> {
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListGlobalLicenseServiceClient.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListGlobalLicenseServiceClient.java
index 802e6caceb09..6baa1286e63d 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListGlobalLicenseServiceClient.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListGlobalLicenseServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -230,6 +231,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserListGlobalLicenseServiceClient implements BackgroundResource {
   private final UserListGlobalLicenseServiceSettings settings;
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListGlobalLicenseServiceSettings.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListGlobalLicenseServiceSettings.java
index 26908fbda110..099606100326 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListGlobalLicenseServiceSettings.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListGlobalLicenseServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserListGlobalLicenseServiceSettings
     extends ClientSettings<UserListGlobalLicenseServiceSettings> {
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListServiceClient.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListServiceClient.java
index 2acb37370960..97d9dd9273cd 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListServiceClient.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -247,6 +248,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserListServiceClient implements BackgroundResource {
   private final UserListServiceSettings settings;
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListServiceSettings.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListServiceSettings.java
index a04b200a5afa..4cf5feb6d1d5 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListServiceSettings.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/UserListServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserListServiceSettings extends ClientSettings<UserListServiceSettings> {
 
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcIngestionServiceCallableFactory.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcIngestionServiceCallableFactory.java
index 4adede92013c..2f6bd986acf8 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcIngestionServiceCallableFactory.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcIngestionServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIngestionServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcIngestionServiceStub.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcIngestionServiceStub.java
index 1b9c8f169200..19d2e0a9ae6d 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcIngestionServiceStub.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcIngestionServiceStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIngestionServiceStub extends IngestionServiceStub {
   private static final MethodDescriptor<IngestAudienceMembersRequest, IngestAudienceMembersResponse>
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcMarketingDataInsightsServiceCallableFactory.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcMarketingDataInsightsServiceCallableFactory.java
index fad4cfe93069..f4071cf3872e 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcMarketingDataInsightsServiceCallableFactory.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcMarketingDataInsightsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMarketingDataInsightsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcMarketingDataInsightsServiceStub.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcMarketingDataInsightsServiceStub.java
index a6dad8de6487..9431654dc1c4 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcMarketingDataInsightsServiceStub.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcMarketingDataInsightsServiceStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMarketingDataInsightsServiceStub extends MarketingDataInsightsServiceStub {
   private static final MethodDescriptor<RetrieveInsightsRequest, RetrieveInsightsResponse>
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcPartnerLinkServiceCallableFactory.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcPartnerLinkServiceCallableFactory.java
index dac73b3e5a30..24cf5797acbe 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcPartnerLinkServiceCallableFactory.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcPartnerLinkServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPartnerLinkServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcPartnerLinkServiceStub.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcPartnerLinkServiceStub.java
index 1c0985377baa..5004259229fc 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcPartnerLinkServiceStub.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcPartnerLinkServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPartnerLinkServiceStub extends PartnerLinkServiceStub {
   private static final MethodDescriptor<CreatePartnerLinkRequest, PartnerLink>
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListDirectLicenseServiceCallableFactory.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListDirectLicenseServiceCallableFactory.java
index 7da64bc2b306..fb71e48133d2 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListDirectLicenseServiceCallableFactory.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListDirectLicenseServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcUserListDirectLicenseServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListDirectLicenseServiceStub.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListDirectLicenseServiceStub.java
index 95db1daf0190..a4f586611b1d 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListDirectLicenseServiceStub.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListDirectLicenseServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcUserListDirectLicenseServiceStub extends UserListDirectLicenseServiceStub {
   private static final MethodDescriptor<CreateUserListDirectLicenseRequest, UserListDirectLicense>
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListGlobalLicenseServiceCallableFactory.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListGlobalLicenseServiceCallableFactory.java
index 26da01e6e2e9..7e97c8bdaa60 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListGlobalLicenseServiceCallableFactory.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListGlobalLicenseServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcUserListGlobalLicenseServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListGlobalLicenseServiceStub.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListGlobalLicenseServiceStub.java
index 65c037f5e398..e4c629ee05c5 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListGlobalLicenseServiceStub.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListGlobalLicenseServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcUserListGlobalLicenseServiceStub extends UserListGlobalLicenseServiceStub {
   private static final MethodDescriptor<CreateUserListGlobalLicenseRequest, UserListGlobalLicense>
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListServiceCallableFactory.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListServiceCallableFactory.java
index c81f1f50d6d8..b80801861d26 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListServiceCallableFactory.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcUserListServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListServiceStub.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListServiceStub.java
index 1d2563520e18..ca3863cd85c2 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListServiceStub.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/GrpcUserListServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcUserListServiceStub extends UserListServiceStub {
   private static final MethodDescriptor<GetUserListRequest, UserList> getUserListMethodDescriptor =
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonIngestionServiceCallableFactory.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonIngestionServiceCallableFactory.java
index 141aec7a3a78..21f264a55750 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonIngestionServiceCallableFactory.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonIngestionServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIngestionServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonIngestionServiceStub.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonIngestionServiceStub.java
index 0f41fc286d40..13731be040d0 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonIngestionServiceStub.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonIngestionServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIngestionServiceStub extends IngestionServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonMarketingDataInsightsServiceCallableFactory.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonMarketingDataInsightsServiceCallableFactory.java
index 9df5c045e4f0..4c10441b7896 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonMarketingDataInsightsServiceCallableFactory.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonMarketingDataInsightsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMarketingDataInsightsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonMarketingDataInsightsServiceStub.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonMarketingDataInsightsServiceStub.java
index 3567d6b3dd50..7e93ffc85076 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonMarketingDataInsightsServiceStub.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonMarketingDataInsightsServiceStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMarketingDataInsightsServiceStub extends MarketingDataInsightsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonPartnerLinkServiceCallableFactory.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonPartnerLinkServiceCallableFactory.java
index e6717b047540..76339b609a3d 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonPartnerLinkServiceCallableFactory.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonPartnerLinkServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPartnerLinkServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonPartnerLinkServiceStub.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonPartnerLinkServiceStub.java
index 70e324cfb189..a4889de44461 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonPartnerLinkServiceStub.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonPartnerLinkServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPartnerLinkServiceStub extends PartnerLinkServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListDirectLicenseServiceCallableFactory.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListDirectLicenseServiceCallableFactory.java
index 00e7ead78e69..247aeb85b585 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListDirectLicenseServiceCallableFactory.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListDirectLicenseServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonUserListDirectLicenseServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListDirectLicenseServiceStub.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListDirectLicenseServiceStub.java
index e1187bc0b111..1f7efd795dfb 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListDirectLicenseServiceStub.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListDirectLicenseServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonUserListDirectLicenseServiceStub extends UserListDirectLicenseServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListGlobalLicenseServiceCallableFactory.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListGlobalLicenseServiceCallableFactory.java
index 35982af444fe..cf44cb8303d6 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListGlobalLicenseServiceCallableFactory.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListGlobalLicenseServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonUserListGlobalLicenseServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListGlobalLicenseServiceStub.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListGlobalLicenseServiceStub.java
index 4a416d88ad35..1cfc24cf7111 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListGlobalLicenseServiceStub.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListGlobalLicenseServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonUserListGlobalLicenseServiceStub extends UserListGlobalLicenseServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListServiceCallableFactory.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListServiceCallableFactory.java
index 803cc2566797..34371688ebc7 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListServiceCallableFactory.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonUserListServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListServiceStub.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListServiceStub.java
index 0fb052402f99..4c9d590fad99 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListServiceStub.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/HttpJsonUserListServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonUserListServiceStub extends UserListServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/IngestionServiceStub.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/IngestionServiceStub.java
index ddea8d1bc7c9..d9da7b474adf 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/IngestionServiceStub.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/IngestionServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class IngestionServiceStub implements BackgroundResource {
 
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/IngestionServiceStubSettings.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/IngestionServiceStubSettings.java
index 6edfe164836f..7e6ce00cfa27 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/IngestionServiceStubSettings.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/IngestionServiceStubSettings.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class IngestionServiceStubSettings extends StubSettings<IngestionServiceStubSettings> {
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/MarketingDataInsightsServiceStub.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/MarketingDataInsightsServiceStub.java
index 24706b501382..95a064448a8c 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/MarketingDataInsightsServiceStub.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/MarketingDataInsightsServiceStub.java
@@ -21,6 +21,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MarketingDataInsightsServiceStub implements BackgroundResource {
 
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/MarketingDataInsightsServiceStubSettings.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/MarketingDataInsightsServiceStubSettings.java
index 47add476f03f..2e7c5491c114 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/MarketingDataInsightsServiceStubSettings.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/MarketingDataInsightsServiceStubSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MarketingDataInsightsServiceStubSettings
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/PartnerLinkServiceStub.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/PartnerLinkServiceStub.java
index b13e1b576ac5..d299d5729f50 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/PartnerLinkServiceStub.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/PartnerLinkServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PartnerLinkServiceStub implements BackgroundResource {
 
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/PartnerLinkServiceStubSettings.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/PartnerLinkServiceStubSettings.java
index aa3c7f89c5bb..aacaacfe029d 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/PartnerLinkServiceStubSettings.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/PartnerLinkServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PartnerLinkServiceStubSettings extends StubSettings<PartnerLinkServiceStubSettings> {
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListDirectLicenseServiceStub.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListDirectLicenseServiceStub.java
index 73debd0db09b..1255ffe73a7a 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListDirectLicenseServiceStub.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListDirectLicenseServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class UserListDirectLicenseServiceStub implements BackgroundResource {
 
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListDirectLicenseServiceStubSettings.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListDirectLicenseServiceStubSettings.java
index 5531cbe18405..7eb8e8a488d2 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListDirectLicenseServiceStubSettings.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListDirectLicenseServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class UserListDirectLicenseServiceStubSettings
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListGlobalLicenseServiceStub.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListGlobalLicenseServiceStub.java
index 0a9268fc57ea..20749269a57f 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListGlobalLicenseServiceStub.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListGlobalLicenseServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.UnaryCallable;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class UserListGlobalLicenseServiceStub implements BackgroundResource {
 
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListGlobalLicenseServiceStubSettings.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListGlobalLicenseServiceStubSettings.java
index 6cf7e03156c0..764e882fff70 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListGlobalLicenseServiceStubSettings.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListGlobalLicenseServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class UserListGlobalLicenseServiceStubSettings
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListServiceStub.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListServiceStub.java
index 0cbd280a0d42..86d75b0725c3 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListServiceStub.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class UserListServiceStub implements BackgroundResource {
 
diff --git a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListServiceStubSettings.java b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListServiceStubSettings.java
index 85df83c73113..43babd4d2d88 100644
--- a/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListServiceStubSettings.java
+++ b/java-datamanager/data-manager/src/main/java/com/google/ads/datamanager/v1/stub/UserListServiceStubSettings.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class UserListServiceStubSettings extends StubSettings<UserListServiceStubSettings> {
diff --git a/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/AccountName.java b/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/AccountName.java
index 2d64737d8dee..6f7fb1bef16e 100644
--- a/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/AccountName.java
+++ b/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT_TYPE_ACCOUNT =
diff --git a/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/PartnerLinkName.java b/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/PartnerLinkName.java
index dbc215e389d2..643f66393dd9 100644
--- a/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/PartnerLinkName.java
+++ b/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/PartnerLinkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PartnerLinkName implements ResourceName {
   private static final PathTemplate ACCOUNT_TYPE_ACCOUNT_PARTNER_LINK =
diff --git a/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/UserListDirectLicenseName.java b/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/UserListDirectLicenseName.java
index 8d5c2affbe54..846baf4d8631 100644
--- a/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/UserListDirectLicenseName.java
+++ b/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/UserListDirectLicenseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserListDirectLicenseName implements ResourceName {
   private static final PathTemplate ACCOUNT_TYPE_ACCOUNT_USER_LIST_DIRECT_LICENSE =
diff --git a/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/UserListGlobalLicenseCustomerInfoName.java b/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/UserListGlobalLicenseCustomerInfoName.java
index 4b5b120af83e..86f36927b921 100644
--- a/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/UserListGlobalLicenseCustomerInfoName.java
+++ b/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/UserListGlobalLicenseCustomerInfoName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserListGlobalLicenseCustomerInfoName implements ResourceName {
   private static final PathTemplate
diff --git a/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/UserListGlobalLicenseName.java b/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/UserListGlobalLicenseName.java
index c0edbcf55e79..eb318d2a0ee6 100644
--- a/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/UserListGlobalLicenseName.java
+++ b/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/UserListGlobalLicenseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserListGlobalLicenseName implements ResourceName {
   private static final PathTemplate ACCOUNT_TYPE_ACCOUNT_USER_LIST_GLOBAL_LICENSE =
diff --git a/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/UserListName.java b/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/UserListName.java
index b5c139dca5d4..2683d140369c 100644
--- a/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/UserListName.java
+++ b/java-datamanager/proto-data-manager-v1/src/main/java/com/google/ads/datamanager/v1/UserListName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserListName implements ResourceName {
   private static final PathTemplate ACCOUNT_TYPE_ACCOUNT_USER_LIST =
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/BusinessGlossaryServiceClient.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/BusinessGlossaryServiceClient.java
index a5809db00b8b..83d32eda9d58 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/BusinessGlossaryServiceClient.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/BusinessGlossaryServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -502,6 +503,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BusinessGlossaryServiceClient implements BackgroundResource {
   private final BusinessGlossaryServiceSettings settings;
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/BusinessGlossaryServiceSettings.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/BusinessGlossaryServiceSettings.java
index 12421255414a..9377a518c15d 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/BusinessGlossaryServiceSettings.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/BusinessGlossaryServiceSettings.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BusinessGlossaryServiceSettings
     extends ClientSettings<BusinessGlossaryServiceSettings> {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/CatalogServiceClient.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/CatalogServiceClient.java
index 40cd0bd30e26..611e87b71f94 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/CatalogServiceClient.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/CatalogServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -928,6 +929,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CatalogServiceClient implements BackgroundResource {
   private final CatalogServiceSettings settings;
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/CatalogServiceSettings.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/CatalogServiceSettings.java
index dbf6c5b84297..0ee2b7ef350b 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/CatalogServiceSettings.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/CatalogServiceSettings.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CatalogServiceSettings extends ClientSettings<CatalogServiceSettings> {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/CmekServiceClient.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/CmekServiceClient.java
index 3d79f3f338ba..58f7956bbfa4 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/CmekServiceClient.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/CmekServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -305,6 +306,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CmekServiceClient implements BackgroundResource {
   private final CmekServiceSettings settings;
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/CmekServiceSettings.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/CmekServiceSettings.java
index f2e7aa279352..afbef25dcf48 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/CmekServiceSettings.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/CmekServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CmekServiceSettings extends ClientSettings<CmekServiceSettings> {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataProductServiceClient.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataProductServiceClient.java
index 13e99bb9d354..d036c195abc0 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataProductServiceClient.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataProductServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -421,6 +422,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataProductServiceClient implements BackgroundResource {
   private final DataProductServiceSettings settings;
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataProductServiceSettings.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataProductServiceSettings.java
index b44d94562b56..44716054d80f 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataProductServiceSettings.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataProductServiceSettings.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataProductServiceSettings extends ClientSettings<DataProductServiceSettings> {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataScanServiceClient.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataScanServiceClient.java
index f9d88183d15b..453ea608ba80 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataScanServiceClient.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataScanServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -407,6 +408,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataScanServiceClient implements BackgroundResource {
   private final DataScanServiceSettings settings;
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataScanServiceSettings.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataScanServiceSettings.java
index 93ad4b193543..63b3163b665d 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataScanServiceSettings.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataScanServiceSettings.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataScanServiceSettings extends ClientSettings<DataScanServiceSettings> {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataTaxonomyServiceClient.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataTaxonomyServiceClient.java
index 62e9f9e441b3..9b804082074c 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataTaxonomyServiceClient.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataTaxonomyServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -508,6 +509,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class DataTaxonomyServiceClient implements BackgroundResource {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataTaxonomyServiceSettings.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataTaxonomyServiceSettings.java
index e9623f54b6aa..13c9ad098c7b 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataTaxonomyServiceSettings.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataTaxonomyServiceSettings.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class DataTaxonomyServiceSettings extends ClientSettings<DataTaxonomyServiceSettings> {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataplexServiceClient.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataplexServiceClient.java
index 74779abfc524..9fca7ec60e0f 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataplexServiceClient.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataplexServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -743,6 +744,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataplexServiceClient implements BackgroundResource {
   private final DataplexServiceSettings settings;
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataplexServiceSettings.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataplexServiceSettings.java
index 2a8783b70839..b8c42e7cd19d 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataplexServiceSettings.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/DataplexServiceSettings.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataplexServiceSettings extends ClientSettings<DataplexServiceSettings> {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/MetadataServiceClient.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/MetadataServiceClient.java
index 2ba1902d5c83..7a57bbf30a06 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/MetadataServiceClient.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/MetadataServiceClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -375,6 +376,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetadataServiceClient implements BackgroundResource {
   private final MetadataServiceSettings settings;
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/MetadataServiceSettings.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/MetadataServiceSettings.java
index 98b27eccf87d..43399e4fad55 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/MetadataServiceSettings.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/MetadataServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetadataServiceSettings extends ClientSettings<MetadataServiceSettings> {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/BusinessGlossaryServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/BusinessGlossaryServiceStub.java
index 85109d2c9d1a..711cac44af8c 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/BusinessGlossaryServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/BusinessGlossaryServiceStub.java
@@ -59,6 +59,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BusinessGlossaryServiceStub implements BackgroundResource {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/BusinessGlossaryServiceStubSettings.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/BusinessGlossaryServiceStubSettings.java
index fd6a0624abee..6a0d81dba2ea 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/BusinessGlossaryServiceStubSettings.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/BusinessGlossaryServiceStubSettings.java
@@ -93,6 +93,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -171,6 +172,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BusinessGlossaryServiceStubSettings
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/CatalogServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/CatalogServiceStub.java
index 007d49f813ff..ce1b9405af55 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/CatalogServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/CatalogServiceStub.java
@@ -97,6 +97,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CatalogServiceStub implements BackgroundResource {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/CatalogServiceStubSettings.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/CatalogServiceStubSettings.java
index 9f2b598de313..4019708e5baa 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/CatalogServiceStubSettings.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/CatalogServiceStubSettings.java
@@ -132,6 +132,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -209,6 +210,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CatalogServiceStubSettings extends StubSettings<CatalogServiceStubSettings> {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/CmekServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/CmekServiceStub.java
index 8c87b6a68fcf..22a9328d1215 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/CmekServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/CmekServiceStub.java
@@ -43,6 +43,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CmekServiceStub implements BackgroundResource {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/CmekServiceStubSettings.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/CmekServiceStubSettings.java
index bddec4407741..bf3fec702b93 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/CmekServiceStubSettings.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/CmekServiceStubSettings.java
@@ -77,6 +77,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CmekServiceStubSettings extends StubSettings<CmekServiceStubSettings> {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataProductServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataProductServiceStub.java
index 308ee5fbac7c..f286cb350d0b 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataProductServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataProductServiceStub.java
@@ -53,6 +53,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataProductServiceStub implements BackgroundResource {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataProductServiceStubSettings.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataProductServiceStubSettings.java
index 1a71da7fa2e3..126c309dfaf0 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataProductServiceStubSettings.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataProductServiceStubSettings.java
@@ -87,6 +87,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -165,6 +166,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataProductServiceStubSettings extends StubSettings<DataProductServiceStubSettings> {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataScanServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataScanServiceStub.java
index c0022806879f..6201bbe2d1d2 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataScanServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataScanServiceStub.java
@@ -54,6 +54,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataScanServiceStub implements BackgroundResource {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataScanServiceStubSettings.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataScanServiceStubSettings.java
index 0a42a899604c..88e01673ee5d 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataScanServiceStubSettings.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataScanServiceStubSettings.java
@@ -88,6 +88,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -165,6 +166,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataScanServiceStubSettings extends StubSettings<DataScanServiceStubSettings> {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataTaxonomyServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataTaxonomyServiceStub.java
index 55f0902cfb7f..52a365c8d7c1 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataTaxonomyServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataTaxonomyServiceStub.java
@@ -59,6 +59,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public abstract class DataTaxonomyServiceStub implements BackgroundResource {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataTaxonomyServiceStubSettings.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataTaxonomyServiceStubSettings.java
index 5e590f74484a..c4211cdab44e 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataTaxonomyServiceStubSettings.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataTaxonomyServiceStubSettings.java
@@ -93,6 +93,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -173,6 +174,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataplexServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataplexServiceStub.java
index 2d292c8a0f79..e96d5d55b87a 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataplexServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataplexServiceStub.java
@@ -82,6 +82,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataplexServiceStub implements BackgroundResource {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataplexServiceStubSettings.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataplexServiceStubSettings.java
index 2e97acf5a1e2..011de50f7749 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataplexServiceStubSettings.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/DataplexServiceStubSettings.java
@@ -117,6 +117,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -194,6 +195,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataplexServiceStubSettings extends StubSettings<DataplexServiceStubSettings> {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcBusinessGlossaryServiceCallableFactory.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcBusinessGlossaryServiceCallableFactory.java
index b5c0c9bdd7eb..d891028de1b0 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcBusinessGlossaryServiceCallableFactory.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcBusinessGlossaryServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBusinessGlossaryServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcBusinessGlossaryServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcBusinessGlossaryServiceStub.java
index 93d3faff6e17..8c624fc27b6a 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcBusinessGlossaryServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcBusinessGlossaryServiceStub.java
@@ -68,6 +68,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBusinessGlossaryServiceStub extends BusinessGlossaryServiceStub {
   private static final MethodDescriptor<CreateGlossaryRequest, Operation>
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcCatalogServiceCallableFactory.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcCatalogServiceCallableFactory.java
index 76a4891e498a..69fc66558e97 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcCatalogServiceCallableFactory.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcCatalogServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCatalogServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcCatalogServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcCatalogServiceStub.java
index 914cea970ead..8f504e4c6766 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcCatalogServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcCatalogServiceStub.java
@@ -106,6 +106,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCatalogServiceStub extends CatalogServiceStub {
   private static final MethodDescriptor<CreateEntryTypeRequest, Operation>
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcCmekServiceCallableFactory.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcCmekServiceCallableFactory.java
index 74a2f9c76a8a..21db5f30f61a 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcCmekServiceCallableFactory.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcCmekServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCmekServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcCmekServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcCmekServiceStub.java
index 6262b2842151..2cdff660cd9c 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcCmekServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcCmekServiceStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCmekServiceStub extends CmekServiceStub {
   private static final MethodDescriptor<CreateEncryptionConfigRequest, Operation>
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataProductServiceCallableFactory.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataProductServiceCallableFactory.java
index e54576d87fdd..6610f6aa7aeb 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataProductServiceCallableFactory.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataProductServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataProductServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataProductServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataProductServiceStub.java
index 2241ba4698e4..beaa3ab93e82 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataProductServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataProductServiceStub.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataProductServiceStub extends DataProductServiceStub {
   private static final MethodDescriptor<CreateDataProductRequest, Operation>
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataScanServiceCallableFactory.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataScanServiceCallableFactory.java
index 5032b6527979..786d1c7910ae 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataScanServiceCallableFactory.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataScanServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataScanServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataScanServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataScanServiceStub.java
index 1e90106b6be1..1a6739565b14 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataScanServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataScanServiceStub.java
@@ -63,6 +63,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataScanServiceStub extends DataScanServiceStub {
   private static final MethodDescriptor<CreateDataScanRequest, Operation>
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataTaxonomyServiceCallableFactory.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataTaxonomyServiceCallableFactory.java
index 3ae945a56be4..98e5da927f92 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataTaxonomyServiceCallableFactory.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataTaxonomyServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class GrpcDataTaxonomyServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataTaxonomyServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataTaxonomyServiceStub.java
index 1bfee979228a..7cadd7c62120 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataTaxonomyServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataTaxonomyServiceStub.java
@@ -68,6 +68,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class GrpcDataTaxonomyServiceStub extends DataTaxonomyServiceStub {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataplexServiceCallableFactory.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataplexServiceCallableFactory.java
index 860cf4149483..a4928befd7c1 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataplexServiceCallableFactory.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataplexServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataplexServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataplexServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataplexServiceStub.java
index e85c3973e986..82f6a3614085 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataplexServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcDataplexServiceStub.java
@@ -91,6 +91,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataplexServiceStub extends DataplexServiceStub {
   private static final MethodDescriptor<CreateLakeRequest, Operation> createLakeMethodDescriptor =
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcMetadataServiceCallableFactory.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcMetadataServiceCallableFactory.java
index 48f466097e2a..01ad2ab52512 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcMetadataServiceCallableFactory.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcMetadataServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMetadataServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcMetadataServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcMetadataServiceStub.java
index f9a7556c4fbb..119fb40bc884 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcMetadataServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/GrpcMetadataServiceStub.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMetadataServiceStub extends MetadataServiceStub {
   private static final MethodDescriptor<CreateEntityRequest, Entity> createEntityMethodDescriptor =
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonBusinessGlossaryServiceCallableFactory.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonBusinessGlossaryServiceCallableFactory.java
index 955fdcd695b1..c51318bd4e49 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonBusinessGlossaryServiceCallableFactory.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonBusinessGlossaryServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBusinessGlossaryServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonBusinessGlossaryServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonBusinessGlossaryServiceStub.java
index 4df3d508a1bd..7e194210b039 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonBusinessGlossaryServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonBusinessGlossaryServiceStub.java
@@ -79,6 +79,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBusinessGlossaryServiceStub extends BusinessGlossaryServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonCatalogServiceCallableFactory.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonCatalogServiceCallableFactory.java
index 3500ddf9590f..888920a34895 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonCatalogServiceCallableFactory.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonCatalogServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCatalogServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonCatalogServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonCatalogServiceStub.java
index ffdb2fa9fa7e..7226f69470a8 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonCatalogServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonCatalogServiceStub.java
@@ -117,6 +117,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCatalogServiceStub extends CatalogServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonCmekServiceCallableFactory.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonCmekServiceCallableFactory.java
index 32a76b7513da..3ee659adecce 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonCmekServiceCallableFactory.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonCmekServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCmekServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonCmekServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonCmekServiceStub.java
index 8bc923efc41b..5a94d1aa7c6b 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonCmekServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonCmekServiceStub.java
@@ -63,6 +63,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCmekServiceStub extends CmekServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataProductServiceCallableFactory.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataProductServiceCallableFactory.java
index edcb96c460cc..fb4ab83737f8 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataProductServiceCallableFactory.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataProductServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataProductServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataProductServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataProductServiceStub.java
index 536b58c06a04..9c41a3d493b2 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataProductServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataProductServiceStub.java
@@ -73,6 +73,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -80,6 +81,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataProductServiceStub extends DataProductServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataScanServiceCallableFactory.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataScanServiceCallableFactory.java
index a1ca3f686ab2..332d188ccb4a 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataScanServiceCallableFactory.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataScanServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataScanServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataScanServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataScanServiceStub.java
index 4fc75ebef836..16127c5a42f6 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataScanServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataScanServiceStub.java
@@ -74,6 +74,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataScanServiceStub extends DataScanServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataTaxonomyServiceCallableFactory.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataTaxonomyServiceCallableFactory.java
index 6acd5b260644..998c184b1a71 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataTaxonomyServiceCallableFactory.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataTaxonomyServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class HttpJsonDataTaxonomyServiceCallableFactory
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataTaxonomyServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataTaxonomyServiceStub.java
index 2738fdd56b38..40a3a0a3592c 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataTaxonomyServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataTaxonomyServiceStub.java
@@ -79,6 +79,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class HttpJsonDataTaxonomyServiceStub extends DataTaxonomyServiceStub {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataplexServiceCallableFactory.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataplexServiceCallableFactory.java
index 9530d7f0d0dc..e0d36b6c8cf7 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataplexServiceCallableFactory.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataplexServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataplexServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataplexServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataplexServiceStub.java
index 3dcc571ea1c4..f9b1db3c622b 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataplexServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonDataplexServiceStub.java
@@ -102,6 +102,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataplexServiceStub extends DataplexServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonMetadataServiceCallableFactory.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonMetadataServiceCallableFactory.java
index 68863ffc8f47..982f73544198 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonMetadataServiceCallableFactory.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonMetadataServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMetadataServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonMetadataServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonMetadataServiceStub.java
index 79a668ceb9ed..112fc672c5aa 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonMetadataServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/HttpJsonMetadataServiceStub.java
@@ -63,6 +63,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMetadataServiceStub extends MetadataServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/MetadataServiceStub.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/MetadataServiceStub.java
index 3ecc84e97bbd..65a44d311357 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/MetadataServiceStub.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/MetadataServiceStub.java
@@ -46,6 +46,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MetadataServiceStub implements BackgroundResource {
 
diff --git a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/MetadataServiceStubSettings.java b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/MetadataServiceStubSettings.java
index 20badb5e935c..f7a4694d3ef2 100644
--- a/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/MetadataServiceStubSettings.java
+++ b/java-dataplex/google-cloud-dataplex/src/main/java/com/google/cloud/dataplex/v1/stub/MetadataServiceStubSettings.java
@@ -78,6 +78,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MetadataServiceStubSettings extends StubSettings<MetadataServiceStubSettings> {
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/AspectTypeName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/AspectTypeName.java
index 609f6c50a27a..8b65e18e9f32 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/AspectTypeName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/AspectTypeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AspectTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ASPECT_TYPE =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/AssetName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/AssetName.java
index 34b3d3443933..d479c1ecd853 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/AssetName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/AssetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AssetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_LAKE_ZONE_ASSET =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataAssetName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataAssetName.java
index ae1320ebcabd..3b2b573185cb 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataAssetName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataAssetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataAssetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_PRODUCT_DATA_ASSET =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataAttributeBindingName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataAttributeBindingName.java
index 8df8d094bec4..15ce55085a0b 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataAttributeBindingName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataAttributeBindingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataAttributeBindingName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_ATTRIBUTE_BINDING_ID =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataAttributeName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataAttributeName.java
index 14ba2ad16943..aeacf88eabdb 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataAttributeName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataAttributeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataAttributeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATATAXONOMY_DATA_ATTRIBUTE_ID =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataProductName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataProductName.java
index 85603ef50aed..2c5cfac45b22 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataProductName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataProductName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataProductName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_PRODUCT =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataScanJobName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataScanJobName.java
index e6ce8af419ef..6a3a4df532f9 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataScanJobName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataScanJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataScanJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASCAN_JOB =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataScanName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataScanName.java
index 512f95ef190c..0324b5742c2b 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataScanName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataScanName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataScanName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASCAN =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataTaxonomyName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataTaxonomyName.java
index 7c9f74d5ac2d..e72bcafa9dec 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataTaxonomyName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/DataTaxonomyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataTaxonomyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_TAXONOMY_ID =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EncryptionConfigName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EncryptionConfigName.java
index b3937a3853f5..15362757026a 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EncryptionConfigName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EncryptionConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EncryptionConfigName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_ENCRYPTION_CONFIG =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntityName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntityName.java
index a49f7e455d6c..076438910711 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntityName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntityName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntityName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_LAKE_ZONE_ENTITY =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntryGroupName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntryGroupName.java
index 44281bf4e049..19dcc637f6b5 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntryGroupName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntryGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntryGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENTRY_GROUP =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntryLinkName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntryLinkName.java
index 3802ef7ae51b..f5ee1968f33a 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntryLinkName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntryLinkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntryLinkName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENTRY_GROUP_ENTRY_LINK =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntryName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntryName.java
index ff5138e6e45e..751010e9346f 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntryName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENTRY_GROUP_ENTRY =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntryTypeName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntryTypeName.java
index 97924af0c1b0..bda08cf92795 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntryTypeName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/EntryTypeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntryTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENTRY_TYPE =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/GlossaryCategoryName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/GlossaryCategoryName.java
index 3299a659cfa6..d5f26307d2de 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/GlossaryCategoryName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/GlossaryCategoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlossaryCategoryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GLOSSARY_GLOSSARY_CATEGORY =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/GlossaryName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/GlossaryName.java
index 5b695e3ec454..e70f72953f41 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/GlossaryName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/GlossaryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlossaryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GLOSSARY =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/GlossaryTermName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/GlossaryTermName.java
index 33796828795b..9b112d80086a 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/GlossaryTermName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/GlossaryTermName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlossaryTermName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GLOSSARY_GLOSSARY_TERM =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/JobName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/JobName.java
index 5ec0e3cea7bd..9622ea0bd607 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/JobName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/JobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_LAKE_TASK_JOB =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/LakeName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/LakeName.java
index 2c0630d7687c..171794ba6120 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/LakeName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/LakeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LakeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_LAKE =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/LocationName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/LocationName.java
index c41423a39e67..00241e666a37 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/LocationName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/MetadataFeedName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/MetadataFeedName.java
index 1b34d7fa11e4..703a4034fb9d 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/MetadataFeedName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/MetadataFeedName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetadataFeedName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_METADATA_FEED =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/MetadataJobName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/MetadataJobName.java
index 34660220044f..a5972e911a03 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/MetadataJobName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/MetadataJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetadataJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_METADATAJOB =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/OrganizationLocationName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/OrganizationLocationName.java
index c4e60be39910..ac6225914a26 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/OrganizationLocationName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/OrganizationLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationLocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/PartitionName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/PartitionName.java
index 897566d61f8f..5c4bcfd0e774 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/PartitionName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/PartitionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PartitionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_LAKE_ZONE_ENTITY_PARTITION =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/TaskName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/TaskName.java
index d3e3ebe98d67..e80abdc80c5d 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/TaskName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/TaskName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TaskName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_LAKE_TASK =
diff --git a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/ZoneName.java b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/ZoneName.java
index 3d4ce15b3f60..708f17b22529 100644
--- a/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/ZoneName.java
+++ b/java-dataplex/proto-google-cloud-dataplex-v1/src/main/java/com/google/cloud/dataplex/v1/ZoneName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ZoneName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_LAKE_ZONE =
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/DataprocMetastoreClient.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/DataprocMetastoreClient.java
index 160c92990840..5a9685532995 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/DataprocMetastoreClient.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/DataprocMetastoreClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -562,6 +563,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataprocMetastoreClient implements BackgroundResource {
   private final DataprocMetastoreSettings settings;
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/DataprocMetastoreFederationClient.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/DataprocMetastoreFederationClient.java
index 9831a65ca89d..21c96917cf0e 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/DataprocMetastoreFederationClient.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/DataprocMetastoreFederationClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -321,6 +322,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataprocMetastoreFederationClient implements BackgroundResource {
   private final DataprocMetastoreFederationSettings settings;
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/DataprocMetastoreFederationSettings.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/DataprocMetastoreFederationSettings.java
index e629f4a954b5..31a4274581fc 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/DataprocMetastoreFederationSettings.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/DataprocMetastoreFederationSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataprocMetastoreFederationSettings
     extends ClientSettings<DataprocMetastoreFederationSettings> {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/DataprocMetastoreSettings.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/DataprocMetastoreSettings.java
index 2ebe15c2f195..5c83b84f774a 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/DataprocMetastoreSettings.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/DataprocMetastoreSettings.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataprocMetastoreSettings extends ClientSettings<DataprocMetastoreSettings> {
 
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/DataprocMetastoreFederationStub.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/DataprocMetastoreFederationStub.java
index 46003c0a7d31..294368106462 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/DataprocMetastoreFederationStub.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/DataprocMetastoreFederationStub.java
@@ -43,6 +43,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataprocMetastoreFederationStub implements BackgroundResource {
 
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/DataprocMetastoreFederationStubSettings.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/DataprocMetastoreFederationStubSettings.java
index 26581fc60e44..4b6dde73953e 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/DataprocMetastoreFederationStubSettings.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/DataprocMetastoreFederationStubSettings.java
@@ -77,6 +77,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataprocMetastoreFederationStubSettings
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/DataprocMetastoreStub.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/DataprocMetastoreStub.java
index ab3d8f29027c..c751eca2593a 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/DataprocMetastoreStub.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/DataprocMetastoreStub.java
@@ -67,6 +67,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataprocMetastoreStub implements BackgroundResource {
 
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/DataprocMetastoreStubSettings.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/DataprocMetastoreStubSettings.java
index 49f5f19c0df1..0baadf654f6b 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/DataprocMetastoreStubSettings.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/DataprocMetastoreStubSettings.java
@@ -101,6 +101,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -179,6 +180,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataprocMetastoreStubSettings extends StubSettings<DataprocMetastoreStubSettings> {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/GrpcDataprocMetastoreCallableFactory.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/GrpcDataprocMetastoreCallableFactory.java
index 7367ca303902..927f39819c50 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/GrpcDataprocMetastoreCallableFactory.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/GrpcDataprocMetastoreCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataprocMetastoreCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/GrpcDataprocMetastoreFederationCallableFactory.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/GrpcDataprocMetastoreFederationCallableFactory.java
index f924054e6d0f..77d08b53d0e6 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/GrpcDataprocMetastoreFederationCallableFactory.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/GrpcDataprocMetastoreFederationCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataprocMetastoreFederationCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/GrpcDataprocMetastoreFederationStub.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/GrpcDataprocMetastoreFederationStub.java
index 4fdd1537b566..9dd169b96325 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/GrpcDataprocMetastoreFederationStub.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/GrpcDataprocMetastoreFederationStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataprocMetastoreFederationStub extends DataprocMetastoreFederationStub {
   private static final MethodDescriptor<ListFederationsRequest, ListFederationsResponse>
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/GrpcDataprocMetastoreStub.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/GrpcDataprocMetastoreStub.java
index e04079f161b5..f9efa6dd08f6 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/GrpcDataprocMetastoreStub.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/GrpcDataprocMetastoreStub.java
@@ -76,6 +76,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataprocMetastoreStub extends DataprocMetastoreStub {
   private static final MethodDescriptor<ListServicesRequest, ListServicesResponse>
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/HttpJsonDataprocMetastoreCallableFactory.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/HttpJsonDataprocMetastoreCallableFactory.java
index 368673a96642..b4d056c23e68 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/HttpJsonDataprocMetastoreCallableFactory.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/HttpJsonDataprocMetastoreCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataprocMetastoreCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/HttpJsonDataprocMetastoreFederationCallableFactory.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/HttpJsonDataprocMetastoreFederationCallableFactory.java
index 8556725306e7..a668b4554e94 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/HttpJsonDataprocMetastoreFederationCallableFactory.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/HttpJsonDataprocMetastoreFederationCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataprocMetastoreFederationCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/HttpJsonDataprocMetastoreFederationStub.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/HttpJsonDataprocMetastoreFederationStub.java
index afaada4e639f..474737a6a06c 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/HttpJsonDataprocMetastoreFederationStub.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/HttpJsonDataprocMetastoreFederationStub.java
@@ -63,6 +63,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataprocMetastoreFederationStub extends DataprocMetastoreFederationStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/HttpJsonDataprocMetastoreStub.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/HttpJsonDataprocMetastoreStub.java
index 2708c4d14b3d..658b19ee6e4f 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/HttpJsonDataprocMetastoreStub.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1/stub/HttpJsonDataprocMetastoreStub.java
@@ -87,6 +87,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -94,6 +95,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataprocMetastoreStub extends DataprocMetastoreStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/DataprocMetastoreClient.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/DataprocMetastoreClient.java
index c2d87ed0703c..d9fdef2f4660 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/DataprocMetastoreClient.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/DataprocMetastoreClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -576,6 +577,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataprocMetastoreClient implements BackgroundResource {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/DataprocMetastoreFederationClient.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/DataprocMetastoreFederationClient.java
index 7322bc27b508..04260f141de8 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/DataprocMetastoreFederationClient.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/DataprocMetastoreFederationClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -321,6 +322,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataprocMetastoreFederationClient implements BackgroundResource {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/DataprocMetastoreFederationSettings.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/DataprocMetastoreFederationSettings.java
index fbfee6d35264..36c288ecfae6 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/DataprocMetastoreFederationSettings.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/DataprocMetastoreFederationSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataprocMetastoreFederationSettings
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/DataprocMetastoreSettings.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/DataprocMetastoreSettings.java
index 56a59d9916ae..0b96797dbe1e 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/DataprocMetastoreSettings.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/DataprocMetastoreSettings.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataprocMetastoreSettings extends ClientSettings<DataprocMetastoreSettings> {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/DataprocMetastoreFederationStub.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/DataprocMetastoreFederationStub.java
index c0446db3683e..c98d1ea7dcfd 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/DataprocMetastoreFederationStub.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/DataprocMetastoreFederationStub.java
@@ -44,6 +44,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DataprocMetastoreFederationStub implements BackgroundResource {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/DataprocMetastoreFederationStubSettings.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/DataprocMetastoreFederationStubSettings.java
index 091ff9dc5ef5..3e398ec9e168 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/DataprocMetastoreFederationStubSettings.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/DataprocMetastoreFederationStubSettings.java
@@ -77,6 +77,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/DataprocMetastoreStub.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/DataprocMetastoreStub.java
index fe532eccdfde..0647995209ba 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/DataprocMetastoreStub.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/DataprocMetastoreStub.java
@@ -70,6 +70,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DataprocMetastoreStub implements BackgroundResource {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/DataprocMetastoreStubSettings.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/DataprocMetastoreStubSettings.java
index c53d356272d8..0c09d698a747 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/DataprocMetastoreStubSettings.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/DataprocMetastoreStubSettings.java
@@ -103,6 +103,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -181,6 +182,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/GrpcDataprocMetastoreCallableFactory.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/GrpcDataprocMetastoreCallableFactory.java
index f7e2d915f665..b3bd4846b828 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/GrpcDataprocMetastoreCallableFactory.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/GrpcDataprocMetastoreCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataprocMetastoreCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/GrpcDataprocMetastoreFederationCallableFactory.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/GrpcDataprocMetastoreFederationCallableFactory.java
index 22fdd4d33221..3f1b7aef5d7b 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/GrpcDataprocMetastoreFederationCallableFactory.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/GrpcDataprocMetastoreFederationCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataprocMetastoreFederationCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/GrpcDataprocMetastoreFederationStub.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/GrpcDataprocMetastoreFederationStub.java
index bf0ee16a3075..08883bec3f3b 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/GrpcDataprocMetastoreFederationStub.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/GrpcDataprocMetastoreFederationStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataprocMetastoreFederationStub extends DataprocMetastoreFederationStub {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/GrpcDataprocMetastoreStub.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/GrpcDataprocMetastoreStub.java
index 1540d915da4e..447e3b8bb9b3 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/GrpcDataprocMetastoreStub.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/GrpcDataprocMetastoreStub.java
@@ -79,6 +79,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataprocMetastoreStub extends DataprocMetastoreStub {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/HttpJsonDataprocMetastoreCallableFactory.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/HttpJsonDataprocMetastoreCallableFactory.java
index af99309cd820..516bb8f114da 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/HttpJsonDataprocMetastoreCallableFactory.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/HttpJsonDataprocMetastoreCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataprocMetastoreCallableFactory
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/HttpJsonDataprocMetastoreFederationCallableFactory.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/HttpJsonDataprocMetastoreFederationCallableFactory.java
index 23f1db715939..02d5c11d2536 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/HttpJsonDataprocMetastoreFederationCallableFactory.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/HttpJsonDataprocMetastoreFederationCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataprocMetastoreFederationCallableFactory
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/HttpJsonDataprocMetastoreFederationStub.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/HttpJsonDataprocMetastoreFederationStub.java
index 31cb55724afd..66a3d26965a0 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/HttpJsonDataprocMetastoreFederationStub.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/HttpJsonDataprocMetastoreFederationStub.java
@@ -64,6 +64,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataprocMetastoreFederationStub extends DataprocMetastoreFederationStub {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/HttpJsonDataprocMetastoreStub.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/HttpJsonDataprocMetastoreStub.java
index 28e01a381fbc..7cb134cb2a1e 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/HttpJsonDataprocMetastoreStub.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1alpha/stub/HttpJsonDataprocMetastoreStub.java
@@ -90,6 +90,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataprocMetastoreStub extends DataprocMetastoreStub {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/DataprocMetastoreClient.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/DataprocMetastoreClient.java
index 161314c2cf8a..4bfa04db461d 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/DataprocMetastoreClient.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/DataprocMetastoreClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -576,6 +577,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataprocMetastoreClient implements BackgroundResource {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/DataprocMetastoreFederationClient.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/DataprocMetastoreFederationClient.java
index 8fe46fcfe9ed..4899a7744ee0 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/DataprocMetastoreFederationClient.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/DataprocMetastoreFederationClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -321,6 +322,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataprocMetastoreFederationClient implements BackgroundResource {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/DataprocMetastoreFederationSettings.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/DataprocMetastoreFederationSettings.java
index 4298b0696474..2e8b2b0e1587 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/DataprocMetastoreFederationSettings.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/DataprocMetastoreFederationSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataprocMetastoreFederationSettings
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/DataprocMetastoreSettings.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/DataprocMetastoreSettings.java
index 430ee36ea405..c8e511236f7d 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/DataprocMetastoreSettings.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/DataprocMetastoreSettings.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataprocMetastoreSettings extends ClientSettings<DataprocMetastoreSettings> {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/DataprocMetastoreFederationStub.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/DataprocMetastoreFederationStub.java
index 859955f8c41f..d0e7b4e77dae 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/DataprocMetastoreFederationStub.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/DataprocMetastoreFederationStub.java
@@ -44,6 +44,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DataprocMetastoreFederationStub implements BackgroundResource {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/DataprocMetastoreFederationStubSettings.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/DataprocMetastoreFederationStubSettings.java
index 17b7603b8ccb..54f705cad7df 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/DataprocMetastoreFederationStubSettings.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/DataprocMetastoreFederationStubSettings.java
@@ -77,6 +77,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/DataprocMetastoreStub.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/DataprocMetastoreStub.java
index c8102f7c695f..ab56e22e12b9 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/DataprocMetastoreStub.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/DataprocMetastoreStub.java
@@ -70,6 +70,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DataprocMetastoreStub implements BackgroundResource {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/DataprocMetastoreStubSettings.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/DataprocMetastoreStubSettings.java
index 6324ddf7c1cb..7728a26a74d2 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/DataprocMetastoreStubSettings.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/DataprocMetastoreStubSettings.java
@@ -103,6 +103,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -181,6 +182,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/GrpcDataprocMetastoreCallableFactory.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/GrpcDataprocMetastoreCallableFactory.java
index ffa3789966bc..9e1a14b14f72 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/GrpcDataprocMetastoreCallableFactory.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/GrpcDataprocMetastoreCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataprocMetastoreCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/GrpcDataprocMetastoreFederationCallableFactory.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/GrpcDataprocMetastoreFederationCallableFactory.java
index 0820f2c01b9c..9363231857be 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/GrpcDataprocMetastoreFederationCallableFactory.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/GrpcDataprocMetastoreFederationCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataprocMetastoreFederationCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/GrpcDataprocMetastoreFederationStub.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/GrpcDataprocMetastoreFederationStub.java
index c8f21c681a4c..252d75ddfac7 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/GrpcDataprocMetastoreFederationStub.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/GrpcDataprocMetastoreFederationStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataprocMetastoreFederationStub extends DataprocMetastoreFederationStub {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/GrpcDataprocMetastoreStub.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/GrpcDataprocMetastoreStub.java
index 83c3c6f4ce28..0877d34554b4 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/GrpcDataprocMetastoreStub.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/GrpcDataprocMetastoreStub.java
@@ -79,6 +79,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataprocMetastoreStub extends DataprocMetastoreStub {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/HttpJsonDataprocMetastoreCallableFactory.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/HttpJsonDataprocMetastoreCallableFactory.java
index 261d87b3f32c..f9d53684c9d8 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/HttpJsonDataprocMetastoreCallableFactory.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/HttpJsonDataprocMetastoreCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataprocMetastoreCallableFactory
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/HttpJsonDataprocMetastoreFederationCallableFactory.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/HttpJsonDataprocMetastoreFederationCallableFactory.java
index a1db8b4b9e0e..d7eca9b683d4 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/HttpJsonDataprocMetastoreFederationCallableFactory.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/HttpJsonDataprocMetastoreFederationCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataprocMetastoreFederationCallableFactory
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/HttpJsonDataprocMetastoreFederationStub.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/HttpJsonDataprocMetastoreFederationStub.java
index 770f5e0dfea7..d3f0432c544d 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/HttpJsonDataprocMetastoreFederationStub.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/HttpJsonDataprocMetastoreFederationStub.java
@@ -64,6 +64,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataprocMetastoreFederationStub extends DataprocMetastoreFederationStub {
diff --git a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/HttpJsonDataprocMetastoreStub.java b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/HttpJsonDataprocMetastoreStub.java
index b2e7d41c606a..87acf82d2d69 100644
--- a/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/HttpJsonDataprocMetastoreStub.java
+++ b/java-dataproc-metastore/google-cloud-dataproc-metastore/src/main/java/com/google/cloud/metastore/v1beta/stub/HttpJsonDataprocMetastoreStub.java
@@ -90,6 +90,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataprocMetastoreStub extends DataprocMetastoreStub {
diff --git a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/BackupName.java b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/BackupName.java
index ef0fe1ebec76..d04a753ce75a 100644
--- a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/BackupName.java
+++ b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/BackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE_BACKUP =
diff --git a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/FederationName.java b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/FederationName.java
index eb547d38d030..b7a11fc0568b 100644
--- a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/FederationName.java
+++ b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/FederationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FederationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEDERATION =
diff --git a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/LocationName.java b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/LocationName.java
index 7ea7d7241e05..25931bafbc95 100644
--- a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/LocationName.java
+++ b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/MetadataImportName.java b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/MetadataImportName.java
index 5f631786d504..dedc55060684 100644
--- a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/MetadataImportName.java
+++ b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/MetadataImportName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetadataImportName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE_METADATA_IMPORT =
diff --git a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/ServiceName.java b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/ServiceName.java
index df5d51045a21..b23cd6ac7e20 100644
--- a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/ServiceName.java
+++ b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1/src/main/java/com/google/cloud/metastore/v1/ServiceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE =
diff --git a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/BackupName.java b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/BackupName.java
index 9e5a7df0bffb..a7931c08a2f4 100644
--- a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/BackupName.java
+++ b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/BackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE_BACKUP =
diff --git a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/FederationName.java b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/FederationName.java
index b15d05be6c57..a27db7d68563 100644
--- a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/FederationName.java
+++ b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/FederationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FederationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEDERATION =
diff --git a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/LocationName.java b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/LocationName.java
index 3851b6239c11..fddcbb866407 100644
--- a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/LocationName.java
+++ b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/MetadataImportName.java b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/MetadataImportName.java
index 4eba983ce2c6..32971cab9938 100644
--- a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/MetadataImportName.java
+++ b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/MetadataImportName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetadataImportName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE_METADATA_IMPORT =
diff --git a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/ServiceName.java b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/ServiceName.java
index 8fdeca295928..2bb1b1df6acb 100644
--- a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/ServiceName.java
+++ b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1alpha/src/main/java/com/google/cloud/metastore/v1alpha/ServiceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE =
diff --git a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/BackupName.java b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/BackupName.java
index ee375c53cbec..e12b847a2bcd 100644
--- a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/BackupName.java
+++ b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/BackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE_BACKUP =
diff --git a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/FederationName.java b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/FederationName.java
index f727abcf23bd..4d0cafac3e1a 100644
--- a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/FederationName.java
+++ b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/FederationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FederationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEDERATION =
diff --git a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/LocationName.java b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/LocationName.java
index 16d479150355..a9958a685ea1 100644
--- a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/LocationName.java
+++ b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/MetadataImportName.java b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/MetadataImportName.java
index 9d40d1272d1e..accb9ebcc897 100644
--- a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/MetadataImportName.java
+++ b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/MetadataImportName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetadataImportName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE_METADATA_IMPORT =
diff --git a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/ServiceName.java b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/ServiceName.java
index 1da5a9d73f31..cfbef71856e6 100644
--- a/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/ServiceName.java
+++ b/java-dataproc-metastore/proto-google-cloud-dataproc-metastore-v1beta/src/main/java/com/google/cloud/metastore/v1beta/ServiceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE =
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/AutoscalingPolicyServiceClient.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/AutoscalingPolicyServiceClient.java
index e4415dc7d72f..67dc285ba38c 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/AutoscalingPolicyServiceClient.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/AutoscalingPolicyServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -271,6 +272,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutoscalingPolicyServiceClient implements BackgroundResource {
   private final AutoscalingPolicyServiceSettings settings;
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/AutoscalingPolicyServiceSettings.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/AutoscalingPolicyServiceSettings.java
index 0cb08a7ce11e..6e4eaaa09765 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/AutoscalingPolicyServiceSettings.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/AutoscalingPolicyServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutoscalingPolicyServiceSettings
     extends ClientSettings<AutoscalingPolicyServiceSettings> {
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/BatchControllerClient.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/BatchControllerClient.java
index ee6850d53d45..33e04eb35835 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/BatchControllerClient.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/BatchControllerClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -253,6 +254,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BatchControllerClient implements BackgroundResource {
   private final BatchControllerSettings settings;
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/BatchControllerSettings.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/BatchControllerSettings.java
index aa0ce6adecab..4d4470d510c4 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/BatchControllerSettings.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/BatchControllerSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BatchControllerSettings extends ClientSettings<BatchControllerSettings> {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/ClusterControllerClient.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/ClusterControllerClient.java
index adfbfb31864f..abf7ad3398c4 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/ClusterControllerClient.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/ClusterControllerClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -323,6 +324,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClusterControllerClient implements BackgroundResource {
   private final ClusterControllerSettings settings;
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/ClusterControllerSettings.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/ClusterControllerSettings.java
index ffe66eeea00d..274b89e0c9a2 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/ClusterControllerSettings.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/ClusterControllerSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClusterControllerSettings extends ClientSettings<ClusterControllerSettings> {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/JobControllerClient.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/JobControllerClient.java
index 2608b7cb60b8..5483bdd7fd36 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/JobControllerClient.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/JobControllerClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -298,6 +299,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobControllerClient implements BackgroundResource {
   private final JobControllerSettings settings;
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/JobControllerSettings.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/JobControllerSettings.java
index 6c76b812b80c..e1d6d39331eb 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/JobControllerSettings.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/JobControllerSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobControllerSettings extends ClientSettings<JobControllerSettings> {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/NodeGroupControllerClient.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/NodeGroupControllerClient.java
index 7410482c3727..b9e568cb8fa6 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/NodeGroupControllerClient.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/NodeGroupControllerClient.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -225,6 +226,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NodeGroupControllerClient implements BackgroundResource {
   private final NodeGroupControllerSettings settings;
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/NodeGroupControllerSettings.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/NodeGroupControllerSettings.java
index 7c404a5b2fe6..77b7168e3e47 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/NodeGroupControllerSettings.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/NodeGroupControllerSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NodeGroupControllerSettings extends ClientSettings<NodeGroupControllerSettings> {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/SessionControllerClient.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/SessionControllerClient.java
index 93a15ec2069a..daee6c535915 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/SessionControllerClient.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/SessionControllerClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -273,6 +274,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionControllerClient implements BackgroundResource {
   private final SessionControllerSettings settings;
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/SessionControllerSettings.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/SessionControllerSettings.java
index dc2bd98338b6..cbe5733c21a7 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/SessionControllerSettings.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/SessionControllerSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionControllerSettings extends ClientSettings<SessionControllerSettings> {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/SessionTemplateControllerClient.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/SessionTemplateControllerClient.java
index d6adef8e2423..42bcb2e4cb69 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/SessionTemplateControllerClient.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/SessionTemplateControllerClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -268,6 +269,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionTemplateControllerClient implements BackgroundResource {
   private final SessionTemplateControllerSettings settings;
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/SessionTemplateControllerSettings.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/SessionTemplateControllerSettings.java
index 21b207d89a80..1657e05f3956 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/SessionTemplateControllerSettings.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/SessionTemplateControllerSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionTemplateControllerSettings
     extends ClientSettings<SessionTemplateControllerSettings> {
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/WorkflowTemplateServiceClient.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/WorkflowTemplateServiceClient.java
index 4b12e40d8a3e..2305fd89e578 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/WorkflowTemplateServiceClient.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/WorkflowTemplateServiceClient.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -329,6 +330,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkflowTemplateServiceClient implements BackgroundResource {
   private final WorkflowTemplateServiceSettings settings;
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/WorkflowTemplateServiceSettings.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/WorkflowTemplateServiceSettings.java
index e454b84f5ede..66db3e94dad7 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/WorkflowTemplateServiceSettings.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/WorkflowTemplateServiceSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkflowTemplateServiceSettings
     extends ClientSettings<WorkflowTemplateServiceSettings> {
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/AutoscalingPolicyServiceStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/AutoscalingPolicyServiceStub.java
index 3188674af6d9..05b61aed28fa 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/AutoscalingPolicyServiceStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/AutoscalingPolicyServiceStub.java
@@ -34,6 +34,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AutoscalingPolicyServiceStub implements BackgroundResource {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/AutoscalingPolicyServiceStubSettings.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/AutoscalingPolicyServiceStubSettings.java
index 95ffcdcfb510..bf670e1322e9 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/AutoscalingPolicyServiceStubSettings.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/AutoscalingPolicyServiceStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AutoscalingPolicyServiceStubSettings
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/BatchControllerStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/BatchControllerStub.java
index 7013fdb255c3..bb912733216c 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/BatchControllerStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/BatchControllerStub.java
@@ -37,6 +37,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BatchControllerStub implements BackgroundResource {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/BatchControllerStubSettings.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/BatchControllerStubSettings.java
index 06987524a358..fa17d9d300b5 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/BatchControllerStubSettings.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/BatchControllerStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BatchControllerStubSettings extends StubSettings<BatchControllerStubSettings> {
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/ClusterControllerStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/ClusterControllerStub.java
index 990167e7e243..b5e89583c59f 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/ClusterControllerStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/ClusterControllerStub.java
@@ -42,6 +42,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ClusterControllerStub implements BackgroundResource {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/ClusterControllerStubSettings.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/ClusterControllerStubSettings.java
index 05988b5419e3..c9479feb72a6 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/ClusterControllerStubSettings.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/ClusterControllerStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ClusterControllerStubSettings extends StubSettings<ClusterControllerStubSettings> {
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcAutoscalingPolicyServiceCallableFactory.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcAutoscalingPolicyServiceCallableFactory.java
index 74d899833a8c..707b089b3d19 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcAutoscalingPolicyServiceCallableFactory.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcAutoscalingPolicyServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAutoscalingPolicyServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcAutoscalingPolicyServiceStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcAutoscalingPolicyServiceStub.java
index f139b3f51115..2bb240254268 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcAutoscalingPolicyServiceStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcAutoscalingPolicyServiceStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAutoscalingPolicyServiceStub extends AutoscalingPolicyServiceStub {
   private static final MethodDescriptor<CreateAutoscalingPolicyRequest, AutoscalingPolicy>
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcBatchControllerCallableFactory.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcBatchControllerCallableFactory.java
index 21f17f60ccf7..032817cafd2e 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcBatchControllerCallableFactory.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcBatchControllerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBatchControllerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcBatchControllerStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcBatchControllerStub.java
index c891a2b4ab71..0668e6176e4c 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcBatchControllerStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcBatchControllerStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBatchControllerStub extends BatchControllerStub {
   private static final MethodDescriptor<CreateBatchRequest, Operation> createBatchMethodDescriptor =
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcClusterControllerCallableFactory.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcClusterControllerCallableFactory.java
index 0c29b3400d3e..1f0e61dfe98e 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcClusterControllerCallableFactory.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcClusterControllerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcClusterControllerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcClusterControllerStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcClusterControllerStub.java
index c1ca961c40d0..37902a2b019a 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcClusterControllerStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcClusterControllerStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcClusterControllerStub extends ClusterControllerStub {
   private static final MethodDescriptor<CreateClusterRequest, Operation>
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcJobControllerCallableFactory.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcJobControllerCallableFactory.java
index e30851d78376..81820db9bbcf 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcJobControllerCallableFactory.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcJobControllerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcJobControllerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcJobControllerStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcJobControllerStub.java
index a7b51955c61f..abe8ad00b5ef 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcJobControllerStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcJobControllerStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcJobControllerStub extends JobControllerStub {
   private static final MethodDescriptor<SubmitJobRequest, Job> submitJobMethodDescriptor =
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcNodeGroupControllerCallableFactory.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcNodeGroupControllerCallableFactory.java
index fd48948567c2..1a21d78c2b6b 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcNodeGroupControllerCallableFactory.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcNodeGroupControllerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNodeGroupControllerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcNodeGroupControllerStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcNodeGroupControllerStub.java
index 717af364f1f4..8321d34b6b63 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcNodeGroupControllerStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcNodeGroupControllerStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNodeGroupControllerStub extends NodeGroupControllerStub {
   private static final MethodDescriptor<CreateNodeGroupRequest, Operation>
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcSessionControllerCallableFactory.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcSessionControllerCallableFactory.java
index 24b2dd8ffd01..f6c435b4a46c 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcSessionControllerCallableFactory.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcSessionControllerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSessionControllerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcSessionControllerStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcSessionControllerStub.java
index 5800defbce67..fc1a1c77d4e7 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcSessionControllerStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcSessionControllerStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSessionControllerStub extends SessionControllerStub {
   private static final MethodDescriptor<CreateSessionRequest, Operation>
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcSessionTemplateControllerCallableFactory.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcSessionTemplateControllerCallableFactory.java
index 821849dfa29b..031dfa0bbbf0 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcSessionTemplateControllerCallableFactory.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcSessionTemplateControllerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSessionTemplateControllerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcSessionTemplateControllerStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcSessionTemplateControllerStub.java
index 034d2312d834..7a5cb83c7cb4 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcSessionTemplateControllerStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcSessionTemplateControllerStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSessionTemplateControllerStub extends SessionTemplateControllerStub {
   private static final MethodDescriptor<CreateSessionTemplateRequest, SessionTemplate>
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcWorkflowTemplateServiceCallableFactory.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcWorkflowTemplateServiceCallableFactory.java
index cbc6d8d433fb..db1651425cc3 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcWorkflowTemplateServiceCallableFactory.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcWorkflowTemplateServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWorkflowTemplateServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcWorkflowTemplateServiceStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcWorkflowTemplateServiceStub.java
index a68b7f28cc9c..5d9feeca9059 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcWorkflowTemplateServiceStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/GrpcWorkflowTemplateServiceStub.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWorkflowTemplateServiceStub extends WorkflowTemplateServiceStub {
   private static final MethodDescriptor<CreateWorkflowTemplateRequest, WorkflowTemplate>
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonAutoscalingPolicyServiceCallableFactory.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonAutoscalingPolicyServiceCallableFactory.java
index dff912a73e43..977d34c2edf6 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonAutoscalingPolicyServiceCallableFactory.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonAutoscalingPolicyServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAutoscalingPolicyServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonAutoscalingPolicyServiceStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonAutoscalingPolicyServiceStub.java
index 540e068af207..2b2d10313283 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonAutoscalingPolicyServiceStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonAutoscalingPolicyServiceStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAutoscalingPolicyServiceStub extends AutoscalingPolicyServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonBatchControllerCallableFactory.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonBatchControllerCallableFactory.java
index 34cced51ab0d..40d42cdd518f 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonBatchControllerCallableFactory.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonBatchControllerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBatchControllerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonBatchControllerStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonBatchControllerStub.java
index 9ac4558cc69e..edafd7787a69 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonBatchControllerStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonBatchControllerStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBatchControllerStub extends BatchControllerStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonClusterControllerCallableFactory.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonClusterControllerCallableFactory.java
index 78ff46925515..435d71c54845 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonClusterControllerCallableFactory.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonClusterControllerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonClusterControllerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonClusterControllerStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonClusterControllerStub.java
index 2aa13c81f174..7e114c3571be 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonClusterControllerStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonClusterControllerStub.java
@@ -62,6 +62,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonClusterControllerStub extends ClusterControllerStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonJobControllerCallableFactory.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonJobControllerCallableFactory.java
index b736fa01664d..f4a8f50324a2 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonJobControllerCallableFactory.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonJobControllerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonJobControllerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonJobControllerStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonJobControllerStub.java
index a4ece1a06cb6..63f8bfd8c0c3 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonJobControllerStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonJobControllerStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonJobControllerStub extends JobControllerStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonNodeGroupControllerCallableFactory.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonNodeGroupControllerCallableFactory.java
index 166aea6a1eb4..32c1c225241e 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonNodeGroupControllerCallableFactory.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonNodeGroupControllerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNodeGroupControllerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonNodeGroupControllerStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonNodeGroupControllerStub.java
index 084e48612387..8daf97552f88 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonNodeGroupControllerStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonNodeGroupControllerStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNodeGroupControllerStub extends NodeGroupControllerStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonSessionControllerCallableFactory.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonSessionControllerCallableFactory.java
index ec0c5ea827c3..ef4c7cb7b534 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonSessionControllerCallableFactory.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonSessionControllerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionControllerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonSessionControllerStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonSessionControllerStub.java
index 1bc23dbe6881..3b0ca93d50a3 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonSessionControllerStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonSessionControllerStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionControllerStub extends SessionControllerStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonSessionTemplateControllerCallableFactory.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonSessionTemplateControllerCallableFactory.java
index 3ac7d4cf3386..cb3e24e73596 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonSessionTemplateControllerCallableFactory.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonSessionTemplateControllerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionTemplateControllerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonSessionTemplateControllerStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonSessionTemplateControllerStub.java
index 481177f78abc..d3cf4bc8ccfa 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonSessionTemplateControllerStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonSessionTemplateControllerStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionTemplateControllerStub extends SessionTemplateControllerStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonWorkflowTemplateServiceCallableFactory.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonWorkflowTemplateServiceCallableFactory.java
index 7009eb878ed8..a75a8501213d 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonWorkflowTemplateServiceCallableFactory.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonWorkflowTemplateServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWorkflowTemplateServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonWorkflowTemplateServiceStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonWorkflowTemplateServiceStub.java
index 08e4e1750077..395d9ddc125b 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonWorkflowTemplateServiceStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/HttpJsonWorkflowTemplateServiceStub.java
@@ -60,6 +60,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWorkflowTemplateServiceStub extends WorkflowTemplateServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/JobControllerStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/JobControllerStub.java
index cd0838e3b83e..a814e38d1660 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/JobControllerStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/JobControllerStub.java
@@ -39,6 +39,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class JobControllerStub implements BackgroundResource {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/JobControllerStubSettings.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/JobControllerStubSettings.java
index f5697a421804..20bc592e5c6f 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/JobControllerStubSettings.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/JobControllerStubSettings.java
@@ -73,6 +73,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class JobControllerStubSettings extends StubSettings<JobControllerStubSettings> {
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/NodeGroupControllerStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/NodeGroupControllerStub.java
index d80807e959aa..0ec44e6d94e7 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/NodeGroupControllerStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/NodeGroupControllerStub.java
@@ -32,6 +32,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NodeGroupControllerStub implements BackgroundResource {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/NodeGroupControllerStubSettings.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/NodeGroupControllerStubSettings.java
index 266a5f3788ae..598bb06db019 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/NodeGroupControllerStubSettings.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/NodeGroupControllerStubSettings.java
@@ -59,6 +59,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NodeGroupControllerStubSettings extends StubSettings<NodeGroupControllerStubSettings> {
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/SessionControllerStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/SessionControllerStub.java
index eacbc136734d..dd1005bcc07c 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/SessionControllerStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/SessionControllerStub.java
@@ -37,6 +37,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SessionControllerStub implements BackgroundResource {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/SessionControllerStubSettings.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/SessionControllerStubSettings.java
index a3f5c1ebedf3..92b9ec9295ef 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/SessionControllerStubSettings.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/SessionControllerStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -149,6 +150,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SessionControllerStubSettings extends StubSettings<SessionControllerStubSettings> {
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/SessionTemplateControllerStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/SessionTemplateControllerStub.java
index 2255468cc821..ce956eb0c9f4 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/SessionTemplateControllerStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/SessionTemplateControllerStub.java
@@ -34,6 +34,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SessionTemplateControllerStub implements BackgroundResource {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/SessionTemplateControllerStubSettings.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/SessionTemplateControllerStubSettings.java
index a8fcb960ff2e..8cede6c63d88 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/SessionTemplateControllerStubSettings.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/SessionTemplateControllerStubSettings.java
@@ -65,6 +65,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SessionTemplateControllerStubSettings
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/WorkflowTemplateServiceStub.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/WorkflowTemplateServiceStub.java
index e4658622d09e..e6c7aabe540e 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/WorkflowTemplateServiceStub.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/WorkflowTemplateServiceStub.java
@@ -40,6 +40,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class WorkflowTemplateServiceStub implements BackgroundResource {
 
diff --git a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/WorkflowTemplateServiceStubSettings.java b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/WorkflowTemplateServiceStubSettings.java
index 207f97691c09..cb70e78c11cc 100644
--- a/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/WorkflowTemplateServiceStubSettings.java
+++ b/java-dataproc/google-cloud-dataproc/src/main/java/com/google/cloud/dataproc/v1/stub/WorkflowTemplateServiceStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class WorkflowTemplateServiceStubSettings
diff --git a/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/AutoscalingPolicyName.java b/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/AutoscalingPolicyName.java
index 7ea75ae8ce6a..be71a4460594 100644
--- a/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/AutoscalingPolicyName.java
+++ b/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/AutoscalingPolicyName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutoscalingPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AUTOSCALING_POLICY =
diff --git a/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/BatchName.java b/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/BatchName.java
index ca28b12ba90e..619a704e6df1 100644
--- a/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/BatchName.java
+++ b/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/BatchName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BatchName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BATCH =
diff --git a/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/ClusterRegionName.java b/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/ClusterRegionName.java
index 9ec9d0f14d0b..fb45003af943 100644
--- a/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/ClusterRegionName.java
+++ b/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/ClusterRegionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClusterRegionName implements ResourceName {
   private static final PathTemplate PROJECT_REGION_CLUSTER =
diff --git a/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/LocationName.java b/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/LocationName.java
index 7ab3f63da955..55275ec9cfb7 100644
--- a/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/LocationName.java
+++ b/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/NodeGroupName.java b/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/NodeGroupName.java
index 8b4e67e02451..e5e40581065a 100644
--- a/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/NodeGroupName.java
+++ b/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/NodeGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NodeGroupName implements ResourceName {
   private static final PathTemplate PROJECT_REGION_CLUSTER_NODE_GROUP =
diff --git a/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/RegionName.java b/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/RegionName.java
index 9797b4e97ae1..ee0f6356d041 100644
--- a/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/RegionName.java
+++ b/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/RegionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionName implements ResourceName {
   private static final PathTemplate PROJECT_REGION =
diff --git a/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/SessionName.java b/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/SessionName.java
index 40aef648047d..132e342e3dc5 100644
--- a/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/SessionName.java
+++ b/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/SessionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SESSION =
diff --git a/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/SessionTemplateName.java b/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/SessionTemplateName.java
index a93d15204950..9a13ec5eafa1 100644
--- a/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/SessionTemplateName.java
+++ b/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/SessionTemplateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionTemplateName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TEMPLATE =
diff --git a/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/WorkflowTemplateName.java b/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/WorkflowTemplateName.java
index 1ff5cd988f37..b625aa943766 100644
--- a/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/WorkflowTemplateName.java
+++ b/java-dataproc/proto-google-cloud-dataproc-v1/src/main/java/com/google/cloud/dataproc/v1/WorkflowTemplateName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkflowTemplateName implements ResourceName {
   private static final PathTemplate PROJECT_REGION_WORKFLOW_TEMPLATE =
diff --git a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/DatastoreAdminClient.java b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/DatastoreAdminClient.java
index a0530e22fa49..b9f8d94b8ce8 100644
--- a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/DatastoreAdminClient.java
+++ b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/DatastoreAdminClient.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -277,6 +278,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatastoreAdminClient implements BackgroundResource {
   private final DatastoreAdminSettings settings;
diff --git a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/DatastoreAdminSettings.java b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/DatastoreAdminSettings.java
index e3912dd53bc7..869f13b566aa 100644
--- a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/DatastoreAdminSettings.java
+++ b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/DatastoreAdminSettings.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatastoreAdminSettings extends ClientSettings<DatastoreAdminSettings> {
 
diff --git a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/DatastoreAdminStub.java b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/DatastoreAdminStub.java
index 87e0db23e0fd..1e7714dd69f1 100644
--- a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/DatastoreAdminStub.java
+++ b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/DatastoreAdminStub.java
@@ -37,6 +37,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DatastoreAdminStub implements BackgroundResource {
 
diff --git a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/DatastoreAdminStubSettings.java b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/DatastoreAdminStubSettings.java
index 3ee4ba3a68f0..fa33298d1c4e 100644
--- a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/DatastoreAdminStubSettings.java
+++ b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/DatastoreAdminStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DatastoreAdminStubSettings extends StubSettings<DatastoreAdminStubSettings> {
diff --git a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/GrpcDatastoreAdminCallableFactory.java b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/GrpcDatastoreAdminCallableFactory.java
index 47629c9a7206..bfd252808d5c 100644
--- a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/GrpcDatastoreAdminCallableFactory.java
+++ b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/GrpcDatastoreAdminCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDatastoreAdminCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/GrpcDatastoreAdminStub.java b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/GrpcDatastoreAdminStub.java
index 4d72d06cb4b3..ed787d82bfb5 100644
--- a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/GrpcDatastoreAdminStub.java
+++ b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/GrpcDatastoreAdminStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDatastoreAdminStub extends DatastoreAdminStub {
   private static final MethodDescriptor<ExportEntitiesRequest, Operation>
diff --git a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/HttpJsonDatastoreAdminCallableFactory.java b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/HttpJsonDatastoreAdminCallableFactory.java
index bb9ec0e59723..3163dfd6d3c9 100644
--- a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/HttpJsonDatastoreAdminCallableFactory.java
+++ b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/HttpJsonDatastoreAdminCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDatastoreAdminCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/HttpJsonDatastoreAdminStub.java b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/HttpJsonDatastoreAdminStub.java
index 5fe4db69959b..5056d52446d9 100644
--- a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/HttpJsonDatastoreAdminStub.java
+++ b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/admin/v1/stub/HttpJsonDatastoreAdminStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDatastoreAdminStub extends DatastoreAdminStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/DatastoreClient.java b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/DatastoreClient.java
index dfbb17d18878..f71aecd900b5 100644
--- a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/DatastoreClient.java
+++ b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/DatastoreClient.java
@@ -44,6 +44,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -271,6 +272,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatastoreClient implements BackgroundResource {
   private final DatastoreSettings settings;
diff --git a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/DatastoreSettings.java b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/DatastoreSettings.java
index 74da075c1669..5d8f4304eb6d 100644
--- a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/DatastoreSettings.java
+++ b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/DatastoreSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatastoreSettings extends ClientSettings<DatastoreSettings> {
 
diff --git a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/DatastoreStub.java b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/DatastoreStub.java
index 5dad98ef9579..4487af138f86 100644
--- a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/DatastoreStub.java
+++ b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/DatastoreStub.java
@@ -35,6 +35,7 @@
 import com.google.datastore.v1.RunQueryRequest;
 import com.google.datastore.v1.RunQueryResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DatastoreStub implements BackgroundResource {
 
diff --git a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/DatastoreStubSettings.java b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/DatastoreStubSettings.java
index 66f1ecb4a25e..e8ee6dfd6bff 100644
--- a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/DatastoreStubSettings.java
+++ b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/DatastoreStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DatastoreStubSettings extends StubSettings<DatastoreStubSettings> {
diff --git a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/GrpcDatastoreCallableFactory.java b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/GrpcDatastoreCallableFactory.java
index d0423c6e6f94..af3488bd760b 100644
--- a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/GrpcDatastoreCallableFactory.java
+++ b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/GrpcDatastoreCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDatastoreCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/GrpcDatastoreStub.java b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/GrpcDatastoreStub.java
index 9efdf1e6c4c9..94a7bc30d0f0 100644
--- a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/GrpcDatastoreStub.java
+++ b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/GrpcDatastoreStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDatastoreStub extends DatastoreStub {
   private static final MethodDescriptor<LookupRequest, LookupResponse> lookupMethodDescriptor =
diff --git a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/HttpJsonDatastoreCallableFactory.java b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/HttpJsonDatastoreCallableFactory.java
index fbb23e70b585..46d975b5d497 100644
--- a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/HttpJsonDatastoreCallableFactory.java
+++ b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/HttpJsonDatastoreCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDatastoreCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/HttpJsonDatastoreStub.java b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/HttpJsonDatastoreStub.java
index d0c7e3591863..4578a8be6a9c 100644
--- a/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/HttpJsonDatastoreStub.java
+++ b/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/v1/stub/HttpJsonDatastoreStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDatastoreStub extends DatastoreStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/DatastreamClient.java b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/DatastreamClient.java
index 1e4c3ad732d5..8ddd4fe065d5 100644
--- a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/DatastreamClient.java
+++ b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/DatastreamClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -650,6 +651,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatastreamClient implements BackgroundResource {
   private final DatastreamSettings settings;
diff --git a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/DatastreamSettings.java b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/DatastreamSettings.java
index 00436993f250..3ca112a731ee 100644
--- a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/DatastreamSettings.java
+++ b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/DatastreamSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatastreamSettings extends ClientSettings<DatastreamSettings> {
 
diff --git a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/DatastreamStub.java b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/DatastreamStub.java
index e3ba50078af3..7b790275c0fa 100644
--- a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/DatastreamStub.java
+++ b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/DatastreamStub.java
@@ -76,6 +76,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DatastreamStub implements BackgroundResource {
 
diff --git a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/DatastreamStubSettings.java b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/DatastreamStubSettings.java
index eed332d8cf78..ece96ffdb944 100644
--- a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/DatastreamStubSettings.java
+++ b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/DatastreamStubSettings.java
@@ -110,6 +110,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -185,6 +186,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DatastreamStubSettings extends StubSettings<DatastreamStubSettings> {
diff --git a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/GrpcDatastreamCallableFactory.java b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/GrpcDatastreamCallableFactory.java
index 8391ceb2ab84..ab1942367594 100644
--- a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/GrpcDatastreamCallableFactory.java
+++ b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/GrpcDatastreamCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDatastreamCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/GrpcDatastreamStub.java b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/GrpcDatastreamStub.java
index d6c6ef9c389e..f48330306933 100644
--- a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/GrpcDatastreamStub.java
+++ b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/GrpcDatastreamStub.java
@@ -85,6 +85,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDatastreamStub extends DatastreamStub {
   private static final MethodDescriptor<
diff --git a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/HttpJsonDatastreamCallableFactory.java b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/HttpJsonDatastreamCallableFactory.java
index a932f956530e..9da4c1b644c9 100644
--- a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/HttpJsonDatastreamCallableFactory.java
+++ b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/HttpJsonDatastreamCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDatastreamCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/HttpJsonDatastreamStub.java b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/HttpJsonDatastreamStub.java
index e3ee92f64913..bf5ca9c409fa 100644
--- a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/HttpJsonDatastreamStub.java
+++ b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1/stub/HttpJsonDatastreamStub.java
@@ -96,6 +96,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDatastreamStub extends DatastreamStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/DatastreamClient.java b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/DatastreamClient.java
index 2ea10021031d..1e0ef0f1426b 100644
--- a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/DatastreamClient.java
+++ b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/DatastreamClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -526,6 +527,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DatastreamClient implements BackgroundResource {
diff --git a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/DatastreamSettings.java b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/DatastreamSettings.java
index 77e4d08f7173..8107fe5b0eb5 100644
--- a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/DatastreamSettings.java
+++ b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/DatastreamSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DatastreamSettings extends ClientSettings<DatastreamSettings> {
diff --git a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/DatastreamStub.java b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/DatastreamStub.java
index 99da3f18bf6a..a099ad3c323a 100644
--- a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/DatastreamStub.java
+++ b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/DatastreamStub.java
@@ -63,6 +63,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DatastreamStub implements BackgroundResource {
diff --git a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/DatastreamStubSettings.java b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/DatastreamStubSettings.java
index 1294b3ebc438..17e04a39267f 100644
--- a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/DatastreamStubSettings.java
+++ b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/DatastreamStubSettings.java
@@ -96,6 +96,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -171,6 +172,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/GrpcDatastreamCallableFactory.java b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/GrpcDatastreamCallableFactory.java
index f7a290e557c6..d166dcf87edd 100644
--- a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/GrpcDatastreamCallableFactory.java
+++ b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/GrpcDatastreamCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDatastreamCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/GrpcDatastreamStub.java b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/GrpcDatastreamStub.java
index ceb77ff43c24..5776a4ee66f6 100644
--- a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/GrpcDatastreamStub.java
+++ b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/GrpcDatastreamStub.java
@@ -72,6 +72,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -79,6 +80,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDatastreamStub extends DatastreamStub {
diff --git a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/HttpJsonDatastreamCallableFactory.java b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/HttpJsonDatastreamCallableFactory.java
index 43eb20488414..3420126cd525 100644
--- a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/HttpJsonDatastreamCallableFactory.java
+++ b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/HttpJsonDatastreamCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDatastreamCallableFactory
diff --git a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/HttpJsonDatastreamStub.java b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/HttpJsonDatastreamStub.java
index c137e4590c44..ca97586c7bd5 100644
--- a/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/HttpJsonDatastreamStub.java
+++ b/java-datastream/google-cloud-datastream/src/main/java/com/google/cloud/datastream/v1alpha1/stub/HttpJsonDatastreamStub.java
@@ -83,6 +83,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDatastreamStub extends DatastreamStub {
diff --git a/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/ConnectionProfileName.java b/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/ConnectionProfileName.java
index 1d561e2a3ce4..e0ceaf3585e5 100644
--- a/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/ConnectionProfileName.java
+++ b/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/ConnectionProfileName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConnectionProfileName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONNECTION_PROFILE =
diff --git a/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/LocationName.java b/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/LocationName.java
index e3c64c26e4e6..7f0040087671 100644
--- a/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/LocationName.java
+++ b/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/PrivateConnectionName.java b/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/PrivateConnectionName.java
index 2e2bd9ea1883..afa9c3bf6c11 100644
--- a/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/PrivateConnectionName.java
+++ b/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/PrivateConnectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PrivateConnectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRIVATE_CONNECTION =
diff --git a/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/RouteName.java b/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/RouteName.java
index 9ff49d313771..5cb2f75f0982 100644
--- a/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/RouteName.java
+++ b/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/RouteName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RouteName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRIVATE_CONNECTION_ROUTE =
diff --git a/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/StreamName.java b/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/StreamName.java
index 013e221d26a1..17be21a0fc67 100644
--- a/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/StreamName.java
+++ b/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/StreamName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StreamName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_STREAM =
diff --git a/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/StreamObjectName.java b/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/StreamObjectName.java
index f42aa99c6cb5..f9773763bb82 100644
--- a/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/StreamObjectName.java
+++ b/java-datastream/proto-google-cloud-datastream-v1/src/main/java/com/google/cloud/datastream/v1/StreamObjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StreamObjectName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_STREAM_OBJECT =
diff --git a/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/ConnectionProfileName.java b/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/ConnectionProfileName.java
index dfe3e1962c38..3e1fb86d28b8 100644
--- a/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/ConnectionProfileName.java
+++ b/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/ConnectionProfileName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConnectionProfileName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONNECTION_PROFILE =
diff --git a/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/LocationName.java b/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/LocationName.java
index 6ef1223cb7ef..e01c6a2c4590 100644
--- a/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/LocationName.java
+++ b/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/PrivateConnectionName.java b/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/PrivateConnectionName.java
index 61276b5653e0..9109987e5e0a 100644
--- a/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/PrivateConnectionName.java
+++ b/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/PrivateConnectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PrivateConnectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRIVATE_CONNECTION =
diff --git a/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/RouteName.java b/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/RouteName.java
index ab535d3503f7..764e47a4ffb1 100644
--- a/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/RouteName.java
+++ b/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/RouteName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RouteName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRIVATE_CONNECTION_ROUTE =
diff --git a/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/StreamName.java b/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/StreamName.java
index 06ee35c9b022..368253bced76 100644
--- a/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/StreamName.java
+++ b/java-datastream/proto-google-cloud-datastream-v1alpha1/src/main/java/com/google/cloud/datastream/v1alpha1/StreamName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StreamName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_STREAM =
diff --git a/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/CloudDeployClient.java b/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/CloudDeployClient.java
index 9e1b11ceee6d..af17c17aa61c 100644
--- a/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/CloudDeployClient.java
+++ b/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/CloudDeployClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1082,6 +1083,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudDeployClient implements BackgroundResource {
   private final CloudDeploySettings settings;
diff --git a/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/CloudDeploySettings.java b/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/CloudDeploySettings.java
index b4990423b1d2..6a78e65fd67c 100644
--- a/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/CloudDeploySettings.java
+++ b/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/CloudDeploySettings.java
@@ -55,6 +55,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -130,6 +131,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudDeploySettings extends ClientSettings<CloudDeploySettings> {
 
diff --git a/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/CloudDeployStub.java b/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/CloudDeployStub.java
index 266e969131e9..61fcdf5152ef 100644
--- a/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/CloudDeployStub.java
+++ b/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/CloudDeployStub.java
@@ -117,6 +117,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CloudDeployStub implements BackgroundResource {
 
diff --git a/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/CloudDeployStubSettings.java b/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/CloudDeployStubSettings.java
index c943bad0c10e..e7033c3a2c01 100644
--- a/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/CloudDeployStubSettings.java
+++ b/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/CloudDeployStubSettings.java
@@ -151,6 +151,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -228,6 +229,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CloudDeployStubSettings extends StubSettings<CloudDeployStubSettings> {
diff --git a/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/GrpcCloudDeployCallableFactory.java b/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/GrpcCloudDeployCallableFactory.java
index 5d4e56d6ae8d..539d765a6a1d 100644
--- a/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/GrpcCloudDeployCallableFactory.java
+++ b/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/GrpcCloudDeployCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudDeployCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/GrpcCloudDeployStub.java b/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/GrpcCloudDeployStub.java
index a6ede307fc33..c7712b8bd440 100644
--- a/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/GrpcCloudDeployStub.java
+++ b/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/GrpcCloudDeployStub.java
@@ -126,6 +126,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -133,6 +134,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudDeployStub extends CloudDeployStub {
   private static final MethodDescriptor<ListDeliveryPipelinesRequest, ListDeliveryPipelinesResponse>
diff --git a/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/HttpJsonCloudDeployCallableFactory.java b/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/HttpJsonCloudDeployCallableFactory.java
index 9ea10abe2378..5b6ab6eb748b 100644
--- a/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/HttpJsonCloudDeployCallableFactory.java
+++ b/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/HttpJsonCloudDeployCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudDeployCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/HttpJsonCloudDeployStub.java b/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/HttpJsonCloudDeployStub.java
index 4305a0c1c601..bdb890888772 100644
--- a/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/HttpJsonCloudDeployStub.java
+++ b/java-deploy/google-cloud-deploy/src/main/java/com/google/cloud/deploy/v1/stub/HttpJsonCloudDeployStub.java
@@ -137,6 +137,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudDeployStub extends CloudDeployStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/AutomationName.java b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/AutomationName.java
index 854eb4f5db78..0ab4f70b8f96 100644
--- a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/AutomationName.java
+++ b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/AutomationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutomationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DELIVERY_PIPELINE_AUTOMATION =
diff --git a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/AutomationRunName.java b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/AutomationRunName.java
index 3b5a6d54c8f2..25ebeae25c94 100644
--- a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/AutomationRunName.java
+++ b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/AutomationRunName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutomationRunName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DELIVERY_PIPELINE_AUTOMATION_RUN =
diff --git a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/ConfigName.java b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/ConfigName.java
index 57bf0786fc6d..3a565fcb2dd7 100644
--- a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/ConfigName.java
+++ b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/ConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/CustomTargetTypeName.java b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/CustomTargetTypeName.java
index 099a30e634f2..f5a87eb65072 100644
--- a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/CustomTargetTypeName.java
+++ b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/CustomTargetTypeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomTargetTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CUSTOM_TARGET_TYPE =
diff --git a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/DeliveryPipelineName.java b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/DeliveryPipelineName.java
index 082fa5960ffc..54e10e1e8c89 100644
--- a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/DeliveryPipelineName.java
+++ b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/DeliveryPipelineName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeliveryPipelineName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DELIVERY_PIPELINE =
diff --git a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/DeployPolicyName.java b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/DeployPolicyName.java
index abb33e4e025d..70f5e8fc0eba 100644
--- a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/DeployPolicyName.java
+++ b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/DeployPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeployPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DEPLOY_POLICY =
diff --git a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/JobRunName.java b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/JobRunName.java
index fdbb5afb6424..edffbd6ad4d5 100644
--- a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/JobRunName.java
+++ b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/JobRunName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobRunName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DELIVERY_PIPELINE_RELEASE_ROLLOUT_JOB_RUN =
diff --git a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/LocationName.java b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/LocationName.java
index 0710dcee9a8c..a33a5e0e1c4e 100644
--- a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/LocationName.java
+++ b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/ReleaseName.java b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/ReleaseName.java
index 2aa06876b84a..2026ddc402ad 100644
--- a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/ReleaseName.java
+++ b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/ReleaseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReleaseName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DELIVERY_PIPELINE_RELEASE =
diff --git a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/RolloutName.java b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/RolloutName.java
index afcad9889ca6..24717c49e836 100644
--- a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/RolloutName.java
+++ b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/RolloutName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RolloutName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DELIVERY_PIPELINE_RELEASE_ROLLOUT =
diff --git a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/TargetName.java b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/TargetName.java
index 858d147c7463..15bbe7b2744e 100644
--- a/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/TargetName.java
+++ b/java-deploy/proto-google-cloud-deploy-v1/src/main/java/com/google/cloud/deploy/v1/TargetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TARGET =
diff --git a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/DeveloperConnectClient.java b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/DeveloperConnectClient.java
index 7feb851208f4..c8c3e92ce6d9 100644
--- a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/DeveloperConnectClient.java
+++ b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/DeveloperConnectClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -669,6 +670,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeveloperConnectClient implements BackgroundResource {
   private final DeveloperConnectSettings settings;
diff --git a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/DeveloperConnectSettings.java b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/DeveloperConnectSettings.java
index 98249027caef..9240e794862f 100644
--- a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/DeveloperConnectSettings.java
+++ b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/DeveloperConnectSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeveloperConnectSettings extends ClientSettings<DeveloperConnectSettings> {
 
diff --git a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/InsightsConfigServiceClient.java b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/InsightsConfigServiceClient.java
index 1039b8f6eb9d..9e7e279448f7 100644
--- a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/InsightsConfigServiceClient.java
+++ b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/InsightsConfigServiceClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -301,6 +302,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InsightsConfigServiceClient implements BackgroundResource {
   private final InsightsConfigServiceSettings settings;
diff --git a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/InsightsConfigServiceSettings.java b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/InsightsConfigServiceSettings.java
index 9b697ee6246e..d2bdd40b26b9 100644
--- a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/InsightsConfigServiceSettings.java
+++ b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/InsightsConfigServiceSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InsightsConfigServiceSettings extends ClientSettings<InsightsConfigServiceSettings> {
 
diff --git a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/DeveloperConnectStub.java b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/DeveloperConnectStub.java
index fb4d07e94035..c51d58398557 100644
--- a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/DeveloperConnectStub.java
+++ b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/DeveloperConnectStub.java
@@ -78,6 +78,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DeveloperConnectStub implements BackgroundResource {
 
diff --git a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/DeveloperConnectStubSettings.java b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/DeveloperConnectStubSettings.java
index 0c20c632f544..c826b7ed1694 100644
--- a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/DeveloperConnectStubSettings.java
+++ b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/DeveloperConnectStubSettings.java
@@ -113,6 +113,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -191,6 +192,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DeveloperConnectStubSettings extends StubSettings<DeveloperConnectStubSettings> {
diff --git a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/GrpcDeveloperConnectCallableFactory.java b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/GrpcDeveloperConnectCallableFactory.java
index 655d2719a863..948eaa3bb4cd 100644
--- a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/GrpcDeveloperConnectCallableFactory.java
+++ b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/GrpcDeveloperConnectCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDeveloperConnectCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/GrpcDeveloperConnectStub.java b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/GrpcDeveloperConnectStub.java
index 450bf9a7e53d..3c8a30e0bb42 100644
--- a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/GrpcDeveloperConnectStub.java
+++ b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/GrpcDeveloperConnectStub.java
@@ -87,6 +87,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -94,6 +95,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDeveloperConnectStub extends DeveloperConnectStub {
   private static final MethodDescriptor<ListConnectionsRequest, ListConnectionsResponse>
diff --git a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/GrpcInsightsConfigServiceCallableFactory.java b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/GrpcInsightsConfigServiceCallableFactory.java
index d43d106f0195..42472e1b16d3 100644
--- a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/GrpcInsightsConfigServiceCallableFactory.java
+++ b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/GrpcInsightsConfigServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcInsightsConfigServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/GrpcInsightsConfigServiceStub.java b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/GrpcInsightsConfigServiceStub.java
index dcdce01ef7c5..a2eda46b1d11 100644
--- a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/GrpcInsightsConfigServiceStub.java
+++ b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/GrpcInsightsConfigServiceStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcInsightsConfigServiceStub extends InsightsConfigServiceStub {
   private static final MethodDescriptor<ListInsightsConfigsRequest, ListInsightsConfigsResponse>
diff --git a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/HttpJsonDeveloperConnectCallableFactory.java b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/HttpJsonDeveloperConnectCallableFactory.java
index a997164c2d51..c07fa28aa148 100644
--- a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/HttpJsonDeveloperConnectCallableFactory.java
+++ b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/HttpJsonDeveloperConnectCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeveloperConnectCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/HttpJsonDeveloperConnectStub.java b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/HttpJsonDeveloperConnectStub.java
index 9e8dc2336f1b..c8ed702d0893 100644
--- a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/HttpJsonDeveloperConnectStub.java
+++ b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/HttpJsonDeveloperConnectStub.java
@@ -98,6 +98,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -105,6 +106,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeveloperConnectStub extends DeveloperConnectStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/HttpJsonInsightsConfigServiceCallableFactory.java b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/HttpJsonInsightsConfigServiceCallableFactory.java
index f79c42b97e49..e3c9a484a27e 100644
--- a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/HttpJsonInsightsConfigServiceCallableFactory.java
+++ b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/HttpJsonInsightsConfigServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInsightsConfigServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/HttpJsonInsightsConfigServiceStub.java b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/HttpJsonInsightsConfigServiceStub.java
index 8eccfd7e3e43..8feac8b9ed65 100644
--- a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/HttpJsonInsightsConfigServiceStub.java
+++ b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/HttpJsonInsightsConfigServiceStub.java
@@ -63,6 +63,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInsightsConfigServiceStub extends InsightsConfigServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/InsightsConfigServiceStub.java b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/InsightsConfigServiceStub.java
index e83204f73949..0793b5a70795 100644
--- a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/InsightsConfigServiceStub.java
+++ b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/InsightsConfigServiceStub.java
@@ -43,6 +43,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InsightsConfigServiceStub implements BackgroundResource {
 
diff --git a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/InsightsConfigServiceStubSettings.java b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/InsightsConfigServiceStubSettings.java
index a24c4f01d589..44710193ee21 100644
--- a/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/InsightsConfigServiceStubSettings.java
+++ b/java-developerconnect/google-cloud-developerconnect/src/main/java/com/google/cloud/developerconnect/v1/stub/InsightsConfigServiceStubSettings.java
@@ -77,6 +77,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InsightsConfigServiceStubSettings
diff --git a/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/AccountConnectorName.java b/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/AccountConnectorName.java
index bfe516b32b9d..70624e733226 100644
--- a/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/AccountConnectorName.java
+++ b/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/AccountConnectorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountConnectorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ACCOUNT_CONNECTOR =
diff --git a/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/ConnectionName.java b/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/ConnectionName.java
index a3b92ddbb13e..689a0900c952 100644
--- a/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/ConnectionName.java
+++ b/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/ConnectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConnectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONNECTION =
diff --git a/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/DeploymentEventName.java b/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/DeploymentEventName.java
index d5371ce4dc5e..508c6f39fba7 100644
--- a/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/DeploymentEventName.java
+++ b/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/DeploymentEventName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentEventName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSIGHTS_CONFIG_DEPLOYMENT_EVENT =
diff --git a/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/GitRepositoryLinkName.java b/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/GitRepositoryLinkName.java
index 82345e15352e..857e6f2e35c5 100644
--- a/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/GitRepositoryLinkName.java
+++ b/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/GitRepositoryLinkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GitRepositoryLinkName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONNECTION_GIT_REPOSITORY_LINK =
diff --git a/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/InsightsConfigName.java b/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/InsightsConfigName.java
index 006186b2b873..1646ad51cd2d 100644
--- a/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/InsightsConfigName.java
+++ b/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/InsightsConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InsightsConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSIGHTS_CONFIG =
diff --git a/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/LocationName.java b/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/LocationName.java
index 645c07e1c4a2..bdd5cb38836c 100644
--- a/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/LocationName.java
+++ b/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/UserName.java b/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/UserName.java
index 4c89416ea3d0..a1259d4850d7 100644
--- a/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/UserName.java
+++ b/java-developerconnect/proto-google-cloud-developerconnect-v1/src/main/java/com/google/cloud/developerconnect/v1/UserName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ACCOUNT_CONNECTOR_USER =
diff --git a/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/DeveloperKnowledgeClient.java b/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/DeveloperKnowledgeClient.java
index e675466abb68..1a2bda4a69e3 100644
--- a/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/DeveloperKnowledgeClient.java
+++ b/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/DeveloperKnowledgeClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -183,6 +184,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeveloperKnowledgeClient implements BackgroundResource {
   private final DeveloperKnowledgeSettings settings;
diff --git a/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/DeveloperKnowledgeSettings.java b/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/DeveloperKnowledgeSettings.java
index 2820275c4dd4..3c5560696e17 100644
--- a/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/DeveloperKnowledgeSettings.java
+++ b/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/DeveloperKnowledgeSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeveloperKnowledgeSettings extends ClientSettings<DeveloperKnowledgeSettings> {
 
diff --git a/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/DeveloperKnowledgeStub.java b/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/DeveloperKnowledgeStub.java
index 47aa43ce0ba9..e613a8b861b7 100644
--- a/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/DeveloperKnowledgeStub.java
+++ b/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/DeveloperKnowledgeStub.java
@@ -27,6 +27,7 @@
 import com.google.developers.knowledge.v1.SearchDocumentChunksRequest;
 import com.google.developers.knowledge.v1.SearchDocumentChunksResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DeveloperKnowledgeStub implements BackgroundResource {
 
diff --git a/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/DeveloperKnowledgeStubSettings.java b/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/DeveloperKnowledgeStubSettings.java
index 9ba738db9934..9c1f982d2948 100644
--- a/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/DeveloperKnowledgeStubSettings.java
+++ b/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/DeveloperKnowledgeStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DeveloperKnowledgeStubSettings extends StubSettings<DeveloperKnowledgeStubSettings> {
diff --git a/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/GrpcDeveloperKnowledgeCallableFactory.java b/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/GrpcDeveloperKnowledgeCallableFactory.java
index a5d0ce3866a1..a546b7b15430 100644
--- a/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/GrpcDeveloperKnowledgeCallableFactory.java
+++ b/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/GrpcDeveloperKnowledgeCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDeveloperKnowledgeCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/GrpcDeveloperKnowledgeStub.java b/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/GrpcDeveloperKnowledgeStub.java
index df06e721edce..e0f3234c63fb 100644
--- a/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/GrpcDeveloperKnowledgeStub.java
+++ b/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/GrpcDeveloperKnowledgeStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDeveloperKnowledgeStub extends DeveloperKnowledgeStub {
   private static final MethodDescriptor<SearchDocumentChunksRequest, SearchDocumentChunksResponse>
diff --git a/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/HttpJsonDeveloperKnowledgeCallableFactory.java b/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/HttpJsonDeveloperKnowledgeCallableFactory.java
index c221dd33eded..77d969456f67 100644
--- a/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/HttpJsonDeveloperKnowledgeCallableFactory.java
+++ b/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/HttpJsonDeveloperKnowledgeCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeveloperKnowledgeCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/HttpJsonDeveloperKnowledgeStub.java b/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/HttpJsonDeveloperKnowledgeStub.java
index ef94408e1ad8..e8fd6f4ea2dc 100644
--- a/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/HttpJsonDeveloperKnowledgeStub.java
+++ b/java-developerknowledge/google-cloud-developer-knowledge/src/main/java/com/google/developers/knowledge/v1/stub/HttpJsonDeveloperKnowledgeStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeveloperKnowledgeStub extends DeveloperKnowledgeStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-developerknowledge/proto-google-cloud-developer-knowledge-v1/src/main/java/com/google/developers/knowledge/v1/DocumentName.java b/java-developerknowledge/proto-google-cloud-developer-knowledge-v1/src/main/java/com/google/developers/knowledge/v1/DocumentName.java
index 3c485c8740ee..94ee560d6590 100644
--- a/java-developerknowledge/proto-google-cloud-developer-knowledge-v1/src/main/java/com/google/developers/knowledge/v1/DocumentName.java
+++ b/java-developerknowledge/proto-google-cloud-developer-knowledge-v1/src/main/java/com/google/developers/knowledge/v1/DocumentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentName implements ResourceName {
   private static final PathTemplate DOCUMENT =
diff --git a/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/DirectAccessServiceClient.java b/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/DirectAccessServiceClient.java
index 5e146aa070a7..03add91dfd56 100644
--- a/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/DirectAccessServiceClient.java
+++ b/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/DirectAccessServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -234,6 +235,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DirectAccessServiceClient implements BackgroundResource {
   private final DirectAccessServiceSettings settings;
diff --git a/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/DirectAccessServiceSettings.java b/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/DirectAccessServiceSettings.java
index d5cbdcb2f923..531d5daaca0c 100644
--- a/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/DirectAccessServiceSettings.java
+++ b/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/DirectAccessServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DirectAccessServiceSettings extends ClientSettings<DirectAccessServiceSettings> {
 
diff --git a/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/DirectAccessServiceStub.java b/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/DirectAccessServiceStub.java
index 981a55f40fe0..2b63968a83cb 100644
--- a/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/DirectAccessServiceStub.java
+++ b/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/DirectAccessServiceStub.java
@@ -32,6 +32,7 @@
 import com.google.cloud.devicestreaming.v1.UpdateDeviceSessionRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DirectAccessServiceStub implements BackgroundResource {
 
diff --git a/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/DirectAccessServiceStubSettings.java b/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/DirectAccessServiceStubSettings.java
index 4a966d681e90..dc8bbb6cb9e8 100644
--- a/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/DirectAccessServiceStubSettings.java
+++ b/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/DirectAccessServiceStubSettings.java
@@ -64,6 +64,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DirectAccessServiceStubSettings extends StubSettings<DirectAccessServiceStubSettings> {
diff --git a/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/GrpcDirectAccessServiceCallableFactory.java b/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/GrpcDirectAccessServiceCallableFactory.java
index a76f00ecec07..5f92f2fe5e60 100644
--- a/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/GrpcDirectAccessServiceCallableFactory.java
+++ b/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/GrpcDirectAccessServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDirectAccessServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/GrpcDirectAccessServiceStub.java b/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/GrpcDirectAccessServiceStub.java
index 089681144f39..c859e3f61776 100644
--- a/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/GrpcDirectAccessServiceStub.java
+++ b/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/GrpcDirectAccessServiceStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDirectAccessServiceStub extends DirectAccessServiceStub {
   private static final MethodDescriptor<CreateDeviceSessionRequest, DeviceSession>
diff --git a/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/HttpJsonDirectAccessServiceCallableFactory.java b/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/HttpJsonDirectAccessServiceCallableFactory.java
index dce1071c65b8..3a414a07ade0 100644
--- a/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/HttpJsonDirectAccessServiceCallableFactory.java
+++ b/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/HttpJsonDirectAccessServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDirectAccessServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/HttpJsonDirectAccessServiceStub.java b/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/HttpJsonDirectAccessServiceStub.java
index cf26a20f70d6..173ce5716c20 100644
--- a/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/HttpJsonDirectAccessServiceStub.java
+++ b/java-devicestreaming/google-cloud-devicestreaming/src/main/java/com/google/cloud/devicestreaming/v1/stub/HttpJsonDirectAccessServiceStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDirectAccessServiceStub extends DirectAccessServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-devicestreaming/proto-google-cloud-devicestreaming-v1/src/main/java/com/google/cloud/devicestreaming/v1/DeviceSessionName.java b/java-devicestreaming/proto-google-cloud-devicestreaming-v1/src/main/java/com/google/cloud/devicestreaming/v1/DeviceSessionName.java
index a69d0bc98854..4a3427caaa4a 100644
--- a/java-devicestreaming/proto-google-cloud-devicestreaming-v1/src/main/java/com/google/cloud/devicestreaming/v1/DeviceSessionName.java
+++ b/java-devicestreaming/proto-google-cloud-devicestreaming-v1/src/main/java/com/google/cloud/devicestreaming/v1/DeviceSessionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeviceSessionName implements ResourceName {
   private static final PathTemplate PROJECT_DEVICE_SESSION =
diff --git a/java-devicestreaming/proto-google-cloud-devicestreaming-v1/src/main/java/com/google/cloud/devicestreaming/v1/ProjectName.java b/java-devicestreaming/proto-google-cloud-devicestreaming-v1/src/main/java/com/google/cloud/devicestreaming/v1/ProjectName.java
index 2acbde5789ee..3b0e4df019b7 100644
--- a/java-devicestreaming/proto-google-cloud-devicestreaming-v1/src/main/java/com/google/cloud/devicestreaming/v1/ProjectName.java
+++ b/java-devicestreaming/proto-google-cloud-devicestreaming-v1/src/main/java/com/google/cloud/devicestreaming/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentsClient.java
index 9fbffc7c1103..be7a99f69cd4 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentsClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -360,6 +361,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentsClient implements BackgroundResource {
   private final AgentsSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentsSettings.java
index e0063f55a9a8..d65d99a3b813 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentsSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentsSettings extends ClientSettings<AgentsSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogsClient.java
index f1fbdb7df2d0..48f79bcfa005 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogsClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -189,6 +190,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ChangelogsClient implements BackgroundResource {
   private final ChangelogsSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogsSettings.java
index 306d80b88036..78e0a213470d 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogsSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ChangelogsSettings extends ClientSettings<ChangelogsSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentsClient.java
index 4b64b46d9214..cba0faeda5c2 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentsClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -191,6 +192,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentsClient implements BackgroundResource {
   private final DeploymentsSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentsSettings.java
index e2f7b1ef43d6..d60642247d35 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentsSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentsSettings extends ClientSettings<DeploymentsSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypesClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypesClient.java
index 620ad2b93891..f5c28e9201a5 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypesClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypesClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -287,6 +288,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntityTypesClient implements BackgroundResource {
   private final EntityTypesSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypesSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypesSettings.java
index f0f18ba5d8f1..b1a61a47a004 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypesSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypesSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntityTypesSettings extends ClientSettings<EntityTypesSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentsClient.java
index 92ea117bc1ca..267a0b88b206 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentsClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -335,6 +336,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EnvironmentsClient implements BackgroundResource {
   private final EnvironmentsSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentsSettings.java
index 2f275a6bcd88..f2b1b7e46e3f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentsSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EnvironmentsSettings extends ClientSettings<EnvironmentsSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExamplesClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExamplesClient.java
index 3fed534b9dd9..1bce6515c86a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExamplesClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExamplesClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -248,6 +249,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExamplesClient implements BackgroundResource {
   private final ExamplesSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExamplesSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExamplesSettings.java
index 4636cbbfab8c..2611292a1afe 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExamplesSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExamplesSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExamplesSettings extends ClientSettings<ExamplesSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentsClient.java
index 1ce4a085af46..65652cf31133 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentsClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -287,6 +288,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExperimentsClient implements BackgroundResource {
   private final ExperimentsSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentsSettings.java
index b1334a06a378..08ea3e325f33 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExperimentsSettings extends ClientSettings<ExperimentsSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowsClient.java
index 4f4b513f3f8c..edaab4ac0df6 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowsClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -347,6 +348,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FlowsClient implements BackgroundResource {
   private final FlowsSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowsSettings.java
index c5b2c771d991..6c5c94381218 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowsSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FlowsSettings extends ClientSettings<FlowsSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/GeneratorsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/GeneratorsClient.java
index 5105787d3d87..5a6e802affed 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/GeneratorsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/GeneratorsClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -247,6 +248,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GeneratorsClient implements BackgroundResource {
   private final GeneratorsSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/GeneratorsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/GeneratorsSettings.java
index f136f9d9f1b0..9096817fff01 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/GeneratorsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/GeneratorsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GeneratorsSettings extends ClientSettings<GeneratorsSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentsClient.java
index 874593460980..59054aef75f6 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentsClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -288,6 +289,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IntentsClient implements BackgroundResource {
   private final IntentsSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentsSettings.java
index 824a1233b109..31e1259b8f33 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentsSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IntentsSettings extends ClientSettings<IntentsSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PagesClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PagesClient.java
index bcd4b31f542e..c85866e32a79 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PagesClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PagesClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -249,6 +250,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PagesClient implements BackgroundResource {
   private final PagesSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PagesSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PagesSettings.java
index 2932f07f486c..8b49b6bc3ad7 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PagesSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PagesSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PagesSettings extends ClientSettings<PagesSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PlaybooksClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PlaybooksClient.java
index a8119025355b..93f82770a481 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PlaybooksClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PlaybooksClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -381,6 +382,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PlaybooksClient implements BackgroundResource {
   private final PlaybooksSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PlaybooksSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PlaybooksSettings.java
index 03dd9629c0c7..ea00296dd520 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PlaybooksSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PlaybooksSettings.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PlaybooksSettings extends ClientSettings<PlaybooksSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsServiceClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsServiceClient.java
index feae18a6d3f3..257f7e8530be 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsServiceClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -255,6 +256,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecuritySettingsServiceClient implements BackgroundResource {
   private final SecuritySettingsServiceSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsServiceSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsServiceSettings.java
index 7bc87f41b57a..dbe7ac3c09ed 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsServiceSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecuritySettingsServiceSettings
     extends ClientSettings<SecuritySettingsServiceSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypesClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypesClient.java
index 7cf37ee8183c..fceff9de0296 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypesClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypesClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -255,6 +256,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionEntityTypesClient implements BackgroundResource {
   private final SessionEntityTypesSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypesSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypesSettings.java
index 3839b3726c62..a3b6fdff3eeb 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypesSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypesSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionEntityTypesSettings extends ClientSettings<SessionEntityTypesSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionsClient.java
index bbc5804c39ff..c84d70dba03c 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionsClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -242,6 +243,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionsClient implements BackgroundResource {
   private final SessionsSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionsSettings.java
index 9f4f9c0f4d44..e94cdcc75f99 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionsSettings extends ClientSettings<SessionsSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCasesClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCasesClient.java
index ff2d0dba9e00..0931059a0e6f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCasesClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCasesClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -374,6 +375,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TestCasesClient implements BackgroundResource {
   private final TestCasesSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCasesSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCasesSettings.java
index 29542b380e5a..744686cabc25 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCasesSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCasesSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TestCasesSettings extends ClientSettings<TestCasesSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ToolsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ToolsClient.java
index ed0e4c39f789..30f6549bc3d8 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ToolsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ToolsClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -343,6 +344,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ToolsClient implements BackgroundResource {
   private final ToolsSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ToolsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ToolsSettings.java
index f69e256a030d..57dc004d57ec 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ToolsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ToolsSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ToolsSettings extends ClientSettings<ToolsSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupsClient.java
index fc578661736b..7b492d4a1d24 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupsClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -261,6 +262,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TransitionRouteGroupsClient implements BackgroundResource {
   private final TransitionRouteGroupsSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupsSettings.java
index 7940f0721197..f2aec8f82d26 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TransitionRouteGroupsSettings extends ClientSettings<TransitionRouteGroupsSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionsClient.java
index 3ada2dcfa4a7..f1fe0f7e4024 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionsClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -298,6 +299,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VersionsClient implements BackgroundResource {
   private final VersionsSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionsSettings.java
index 12003801ee5c..e18212fc3487 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionsSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VersionsSettings extends ClientSettings<VersionsSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhooksClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhooksClient.java
index bc126836dafe..57dc5f7b1c18 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhooksClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhooksClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -247,6 +248,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WebhooksClient implements BackgroundResource {
   private final WebhooksSettings settings;
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhooksSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhooksSettings.java
index fa29f233dc3a..d93a2469c6c4 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhooksSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhooksSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WebhooksSettings extends ClientSettings<WebhooksSettings> {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/AgentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/AgentsStub.java
index 44c5481f3ddb..c5d520653f03 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/AgentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/AgentsStub.java
@@ -47,6 +47,7 @@
 import com.google.protobuf.Empty;
 import com.google.protobuf.Struct;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AgentsStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/AgentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/AgentsStubSettings.java
index 6af8a7a02f68..207117e98cb9 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/AgentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/AgentsStubSettings.java
@@ -81,6 +81,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AgentsStubSettings extends StubSettings<AgentsStubSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ChangelogsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ChangelogsStub.java
index 5a3e961ff3af..4f35e43539ce 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ChangelogsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ChangelogsStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ChangelogsStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ChangelogsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ChangelogsStubSettings.java
index 687fe60e1d1f..fce98b7f75d5 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ChangelogsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ChangelogsStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ChangelogsStubSettings extends StubSettings<ChangelogsStubSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/DeploymentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/DeploymentsStub.java
index 646107217805..1f7a8695dacd 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/DeploymentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/DeploymentsStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DeploymentsStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/DeploymentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/DeploymentsStubSettings.java
index 9aa85c9e3ba3..889c53b2203a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/DeploymentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/DeploymentsStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DeploymentsStubSettings extends StubSettings<DeploymentsStubSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EntityTypesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EntityTypesStub.java
index bd58b726253c..b315239c9d69 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EntityTypesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EntityTypesStub.java
@@ -43,6 +43,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EntityTypesStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EntityTypesStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EntityTypesStubSettings.java
index ec80e6f380df..9285b13d5f00 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EntityTypesStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EntityTypesStubSettings.java
@@ -77,6 +77,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EntityTypesStubSettings extends StubSettings<EntityTypesStubSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EnvironmentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EnvironmentsStub.java
index c7b46d0d616b..bad5621d1d5f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EnvironmentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EnvironmentsStub.java
@@ -50,6 +50,7 @@
 import com.google.protobuf.Empty;
 import com.google.protobuf.Struct;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EnvironmentsStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EnvironmentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EnvironmentsStubSettings.java
index 01ac286b3efc..cff08f8763cf 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EnvironmentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EnvironmentsStubSettings.java
@@ -85,6 +85,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -162,6 +163,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EnvironmentsStubSettings extends StubSettings<EnvironmentsStubSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExamplesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExamplesStub.java
index df6e14637a70..91618c815ac9 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExamplesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExamplesStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ExamplesStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExamplesStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExamplesStubSettings.java
index b9fd74df4245..5707187621db 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExamplesStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExamplesStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ExamplesStubSettings extends StubSettings<ExamplesStubSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExperimentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExperimentsStub.java
index aa57fd6f1eee..96630f6d0714 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExperimentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExperimentsStub.java
@@ -36,6 +36,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ExperimentsStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExperimentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExperimentsStubSettings.java
index 2cc58f639065..d723e613ebbc 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExperimentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExperimentsStubSettings.java
@@ -68,6 +68,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ExperimentsStubSettings extends StubSettings<ExperimentsStubSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/FlowsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/FlowsStub.java
index 0891f2c92d62..000dbd5a41da 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/FlowsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/FlowsStub.java
@@ -46,6 +46,7 @@
 import com.google.protobuf.Empty;
 import com.google.protobuf.Struct;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FlowsStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/FlowsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/FlowsStubSettings.java
index a639bd47de4c..8745c6a8c4f2 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/FlowsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/FlowsStubSettings.java
@@ -80,6 +80,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FlowsStubSettings extends StubSettings<FlowsStubSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GeneratorsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GeneratorsStub.java
index 6597718118b6..481a4ad09e41 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GeneratorsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GeneratorsStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GeneratorsStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GeneratorsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GeneratorsStubSettings.java
index 2a287fb12962..ffb161e0b8cb 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GeneratorsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GeneratorsStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GeneratorsStubSettings extends StubSettings<GeneratorsStubSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcAgentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcAgentsCallableFactory.java
index fefe35c6f9d4..e293bb3e98d0 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcAgentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcAgentsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAgentsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcAgentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcAgentsStub.java
index 7b791761e22c..b762aa6b805f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcAgentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcAgentsStub.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAgentsStub extends AgentsStub {
   private static final MethodDescriptor<ListAgentsRequest, ListAgentsResponse>
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcChangelogsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcChangelogsCallableFactory.java
index 8a6eab117d66..6b0a496689c8 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcChangelogsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcChangelogsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcChangelogsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcChangelogsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcChangelogsStub.java
index 24fbfe22d663..9bddccf39612 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcChangelogsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcChangelogsStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcChangelogsStub extends ChangelogsStub {
   private static final MethodDescriptor<ListChangelogsRequest, ListChangelogsResponse>
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcDeploymentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcDeploymentsCallableFactory.java
index 0c3807da4199..4045ead479a5 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcDeploymentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcDeploymentsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDeploymentsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcDeploymentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcDeploymentsStub.java
index bc4ae219e9da..35afa3950ebb 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcDeploymentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcDeploymentsStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDeploymentsStub extends DeploymentsStub {
   private static final MethodDescriptor<ListDeploymentsRequest, ListDeploymentsResponse>
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcEntityTypesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcEntityTypesCallableFactory.java
index af5a96f5cf40..e8789cab6163 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcEntityTypesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcEntityTypesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEntityTypesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcEntityTypesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcEntityTypesStub.java
index 704351dcd996..67d01357ffa7 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcEntityTypesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcEntityTypesStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEntityTypesStub extends EntityTypesStub {
   private static final MethodDescriptor<GetEntityTypeRequest, EntityType>
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcEnvironmentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcEnvironmentsCallableFactory.java
index e11e12cf709b..c24a3894ff9c 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcEnvironmentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcEnvironmentsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEnvironmentsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcEnvironmentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcEnvironmentsStub.java
index 13dbc0300786..8e64b4e165d0 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcEnvironmentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcEnvironmentsStub.java
@@ -59,6 +59,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEnvironmentsStub extends EnvironmentsStub {
   private static final MethodDescriptor<ListEnvironmentsRequest, ListEnvironmentsResponse>
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcExamplesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcExamplesCallableFactory.java
index ba37ec94a81a..0db27d52ed07 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcExamplesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcExamplesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcExamplesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcExamplesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcExamplesStub.java
index 4979235e257c..b0f7f75195a7 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcExamplesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcExamplesStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcExamplesStub extends ExamplesStub {
   private static final MethodDescriptor<CreateExampleRequest, Example>
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcExperimentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcExperimentsCallableFactory.java
index c04c3d84e809..2bcfc113eb12 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcExperimentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcExperimentsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcExperimentsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcExperimentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcExperimentsStub.java
index 5abd961db1fe..1e9a075381af 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcExperimentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcExperimentsStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcExperimentsStub extends ExperimentsStub {
   private static final MethodDescriptor<ListExperimentsRequest, ListExperimentsResponse>
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcFlowsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcFlowsCallableFactory.java
index 62909c47e207..378d61153c4a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcFlowsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcFlowsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFlowsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcFlowsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcFlowsStub.java
index 87a916d0bc8c..977a46e0e63d 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcFlowsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcFlowsStub.java
@@ -55,6 +55,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFlowsStub extends FlowsStub {
   private static final MethodDescriptor<CreateFlowRequest, Flow> createFlowMethodDescriptor =
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcGeneratorsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcGeneratorsCallableFactory.java
index 0bbe1156af40..dd5bba876eea 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcGeneratorsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcGeneratorsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGeneratorsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcGeneratorsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcGeneratorsStub.java
index 76c87a0e0dc3..cef31e20257b 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcGeneratorsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcGeneratorsStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGeneratorsStub extends GeneratorsStub {
   private static final MethodDescriptor<ListGeneratorsRequest, ListGeneratorsResponse>
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcIntentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcIntentsCallableFactory.java
index c8a6d11b95b2..e987ef61621b 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcIntentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcIntentsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIntentsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcIntentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcIntentsStub.java
index 7a3fc108730d..c0610d4130c2 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcIntentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcIntentsStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIntentsStub extends IntentsStub {
   private static final MethodDescriptor<ListIntentsRequest, ListIntentsResponse>
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcPagesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcPagesCallableFactory.java
index 40d66895cbbc..4c7935548e10 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcPagesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcPagesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPagesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcPagesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcPagesStub.java
index a28d40425a96..c222daf3b5e0 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcPagesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcPagesStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPagesStub extends PagesStub {
   private static final MethodDescriptor<ListPagesRequest, ListPagesResponse>
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcPlaybooksCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcPlaybooksCallableFactory.java
index 2e80ec41245d..0c7c0ad07dcf 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcPlaybooksCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcPlaybooksCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPlaybooksCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcPlaybooksStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcPlaybooksStub.java
index 887dcbd37083..c950b7586882 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcPlaybooksStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcPlaybooksStub.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPlaybooksStub extends PlaybooksStub {
   private static final MethodDescriptor<CreatePlaybookRequest, Playbook>
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSecuritySettingsServiceCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSecuritySettingsServiceCallableFactory.java
index 9b4ce5bdfa63..1145d6b7d316 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSecuritySettingsServiceCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSecuritySettingsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSecuritySettingsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSecuritySettingsServiceStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSecuritySettingsServiceStub.java
index 892455c2b172..f7cdf4ce2de5 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSecuritySettingsServiceStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSecuritySettingsServiceStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSecuritySettingsServiceStub extends SecuritySettingsServiceStub {
   private static final MethodDescriptor<CreateSecuritySettingsRequest, SecuritySettings>
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSessionEntityTypesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSessionEntityTypesCallableFactory.java
index 5eca50a1ca34..19dc586539d8 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSessionEntityTypesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSessionEntityTypesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSessionEntityTypesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSessionEntityTypesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSessionEntityTypesStub.java
index b2d7bdaca2c9..3ee07de38f09 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSessionEntityTypesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSessionEntityTypesStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSessionEntityTypesStub extends SessionEntityTypesStub {
   private static final MethodDescriptor<
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSessionsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSessionsCallableFactory.java
index 4ee642186b18..e904fcda12e4 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSessionsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSessionsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSessionsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSessionsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSessionsStub.java
index 9845c62e2a50..9e9a47f62413 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSessionsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcSessionsStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSessionsStub extends SessionsStub {
   private static final MethodDescriptor<DetectIntentRequest, DetectIntentResponse>
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcTestCasesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcTestCasesCallableFactory.java
index 01634b68766f..5906ca8be183 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcTestCasesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcTestCasesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTestCasesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcTestCasesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcTestCasesStub.java
index 66a539ba1012..89fb945bda48 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcTestCasesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcTestCasesStub.java
@@ -65,6 +65,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTestCasesStub extends TestCasesStub {
   private static final MethodDescriptor<ListTestCasesRequest, ListTestCasesResponse>
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcToolsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcToolsCallableFactory.java
index 7bfa113fd44b..0f31f28b80f2 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcToolsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcToolsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcToolsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcToolsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcToolsStub.java
index dad63a483a60..c58137e3e4bc 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcToolsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcToolsStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcToolsStub extends ToolsStub {
   private static final MethodDescriptor<CreateToolRequest, Tool> createToolMethodDescriptor =
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcTransitionRouteGroupsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcTransitionRouteGroupsCallableFactory.java
index acc500763ada..806edad585a8 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcTransitionRouteGroupsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcTransitionRouteGroupsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTransitionRouteGroupsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcTransitionRouteGroupsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcTransitionRouteGroupsStub.java
index 89adddfc0645..1c87882b9c4b 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcTransitionRouteGroupsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcTransitionRouteGroupsStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTransitionRouteGroupsStub extends TransitionRouteGroupsStub {
   private static final MethodDescriptor<
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcVersionsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcVersionsCallableFactory.java
index 0f40f417677f..24f4f95c1695 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcVersionsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcVersionsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVersionsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcVersionsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcVersionsStub.java
index 94527bed1833..431b984f5b99 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcVersionsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcVersionsStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVersionsStub extends VersionsStub {
   private static final MethodDescriptor<ListVersionsRequest, ListVersionsResponse>
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcWebhooksCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcWebhooksCallableFactory.java
index cc550a73e091..f858597b8a48 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcWebhooksCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcWebhooksCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWebhooksCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcWebhooksStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcWebhooksStub.java
index fb10f6224f15..5fe032150d9b 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcWebhooksStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/GrpcWebhooksStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWebhooksStub extends WebhooksStub {
   private static final MethodDescriptor<ListWebhooksRequest, ListWebhooksResponse>
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonAgentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonAgentsCallableFactory.java
index 5ad5e061a4a1..209d70b9dc3c 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonAgentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonAgentsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAgentsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonAgentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonAgentsStub.java
index 6b7318c75080..2e7e0aac60b4 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonAgentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonAgentsStub.java
@@ -67,6 +67,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAgentsStub extends AgentsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonChangelogsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonChangelogsCallableFactory.java
index c24d0def9838..b58093b9d692 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonChangelogsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonChangelogsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonChangelogsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonChangelogsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonChangelogsStub.java
index ac503d59bcb5..00a9a12db8f1 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonChangelogsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonChangelogsStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonChangelogsStub extends ChangelogsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonDeploymentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonDeploymentsCallableFactory.java
index e130d36397f8..1fe840eb9947 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonDeploymentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonDeploymentsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeploymentsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonDeploymentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonDeploymentsStub.java
index 3ac247b2e28c..12af8b03cf17 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonDeploymentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonDeploymentsStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeploymentsStub extends DeploymentsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEntityTypesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEntityTypesCallableFactory.java
index e27167081fa0..56d27b024e24 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEntityTypesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEntityTypesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEntityTypesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEntityTypesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEntityTypesStub.java
index 2426024027d1..c23bcb3b5cc0 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEntityTypesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEntityTypesStub.java
@@ -63,6 +63,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEntityTypesStub extends EntityTypesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEnvironmentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEnvironmentsCallableFactory.java
index 989eb592c5c7..2aa8003eb882 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEnvironmentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEnvironmentsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEnvironmentsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEnvironmentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEnvironmentsStub.java
index 192889405a3b..a6d46f2a8589 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEnvironmentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEnvironmentsStub.java
@@ -70,6 +70,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEnvironmentsStub extends EnvironmentsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExamplesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExamplesCallableFactory.java
index e065cf8d628b..4a961a7e70a8 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExamplesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExamplesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonExamplesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExamplesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExamplesStub.java
index 6e49bbd8b4a8..89dd094ec1a7 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExamplesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExamplesStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonExamplesStub extends ExamplesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExperimentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExperimentsCallableFactory.java
index 6606084e1646..902bc6620ae6 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExperimentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExperimentsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonExperimentsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExperimentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExperimentsStub.java
index 969b955e7ec1..ed55f43b9ae7 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExperimentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExperimentsStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonExperimentsStub extends ExperimentsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonFlowsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonFlowsCallableFactory.java
index e58b38619b4b..399479059dfd 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonFlowsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonFlowsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFlowsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonFlowsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonFlowsStub.java
index 62929842b077..17c78a47bdee 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonFlowsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonFlowsStub.java
@@ -66,6 +66,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFlowsStub extends FlowsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonGeneratorsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonGeneratorsCallableFactory.java
index fb99ea7d93d1..b7c825cb7361 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonGeneratorsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonGeneratorsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGeneratorsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonGeneratorsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonGeneratorsStub.java
index 4ad71c84a0e6..5368d922598a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonGeneratorsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonGeneratorsStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGeneratorsStub extends GeneratorsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonIntentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonIntentsCallableFactory.java
index 04cb65773f52..1404f83a601c 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonIntentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonIntentsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIntentsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonIntentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonIntentsStub.java
index 2d593b0dfc44..07031fca0536 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonIntentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonIntentsStub.java
@@ -63,6 +63,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIntentsStub extends IntentsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPagesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPagesCallableFactory.java
index e66a05f2b172..e2d11e490216 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPagesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPagesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPagesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPagesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPagesStub.java
index 252975174ea3..0d0c78d84f3a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPagesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPagesStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPagesStub extends PagesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPlaybooksCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPlaybooksCallableFactory.java
index 5c193b3e38f0..e3e299c29b4b 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPlaybooksCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPlaybooksCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPlaybooksCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPlaybooksStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPlaybooksStub.java
index 4a6395571768..62b337b3d744 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPlaybooksStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPlaybooksStub.java
@@ -71,6 +71,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -78,6 +79,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPlaybooksStub extends PlaybooksStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSecuritySettingsServiceCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSecuritySettingsServiceCallableFactory.java
index 5dac2a3fb079..d012787fb790 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSecuritySettingsServiceCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSecuritySettingsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSecuritySettingsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSecuritySettingsServiceStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSecuritySettingsServiceStub.java
index 490af42f2dd8..5035c9f9a7f8 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSecuritySettingsServiceStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSecuritySettingsServiceStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSecuritySettingsServiceStub extends SecuritySettingsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionEntityTypesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionEntityTypesCallableFactory.java
index bb0458fd5c10..c4458eaf7cb8 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionEntityTypesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionEntityTypesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionEntityTypesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionEntityTypesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionEntityTypesStub.java
index 86b9101308f7..2df0e0e7b274 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionEntityTypesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionEntityTypesStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionEntityTypesStub extends SessionEntityTypesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionsCallableFactory.java
index 70e5964d1fde..59b7510ec047 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionsStub.java
index 6bf2d4262fc8..f506a0baef38 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionsStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionsStub extends SessionsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTestCasesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTestCasesCallableFactory.java
index 209bbe111ca6..8651ced0d2c3 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTestCasesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTestCasesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTestCasesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTestCasesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTestCasesStub.java
index 941faeed6e36..835865026a9d 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTestCasesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTestCasesStub.java
@@ -76,6 +76,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTestCasesStub extends TestCasesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonToolsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonToolsCallableFactory.java
index 8fc1b40f0a3b..586f445239b1 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonToolsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonToolsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonToolsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonToolsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonToolsStub.java
index 3e16f07e44f2..f1879763fa18 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonToolsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonToolsStub.java
@@ -60,6 +60,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonToolsStub extends ToolsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTransitionRouteGroupsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTransitionRouteGroupsCallableFactory.java
index aedb7b03682e..eb74e6f34ed3 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTransitionRouteGroupsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTransitionRouteGroupsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTransitionRouteGroupsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTransitionRouteGroupsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTransitionRouteGroupsStub.java
index a49b010aacf1..f25ad3cdac12 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTransitionRouteGroupsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTransitionRouteGroupsStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTransitionRouteGroupsStub extends TransitionRouteGroupsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonVersionsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonVersionsCallableFactory.java
index d647864acb0d..76ca3e280674 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonVersionsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonVersionsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVersionsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonVersionsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonVersionsStub.java
index 558010e6d5a8..557f191ef5b0 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonVersionsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonVersionsStub.java
@@ -62,6 +62,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVersionsStub extends VersionsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonWebhooksCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonWebhooksCallableFactory.java
index 54ddc0a12d2e..0772ceb8ca85 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonWebhooksCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonWebhooksCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWebhooksCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonWebhooksStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonWebhooksStub.java
index b84e0644430d..75c6bb2a16cf 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonWebhooksStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonWebhooksStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWebhooksStub extends WebhooksStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/IntentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/IntentsStub.java
index 451105e8e476..b7ca152fb9d6 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/IntentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/IntentsStub.java
@@ -43,6 +43,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class IntentsStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/IntentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/IntentsStubSettings.java
index 4c760072cf37..6bebcaf0d835 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/IntentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/IntentsStubSettings.java
@@ -77,6 +77,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class IntentsStubSettings extends StubSettings<IntentsStubSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PagesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PagesStub.java
index 85cc915ad3c6..e7020ce12b0b 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PagesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PagesStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PagesStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PagesStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PagesStubSettings.java
index 7245b88d8136..89b7309a7b5e 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PagesStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PagesStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PagesStubSettings extends StubSettings<PagesStubSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PlaybooksStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PlaybooksStub.java
index 34e22bbe4dc8..331b4a5864d7 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PlaybooksStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PlaybooksStub.java
@@ -51,6 +51,7 @@
 import com.google.protobuf.Empty;
 import com.google.protobuf.Struct;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PlaybooksStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PlaybooksStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PlaybooksStubSettings.java
index 2aa8d1869327..44406345d852 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PlaybooksStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PlaybooksStubSettings.java
@@ -85,6 +85,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -160,6 +161,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PlaybooksStubSettings extends StubSettings<PlaybooksStubSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SecuritySettingsServiceStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SecuritySettingsServiceStub.java
index 8079bf7c1191..0e227a84a101 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SecuritySettingsServiceStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SecuritySettingsServiceStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SecuritySettingsServiceStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SecuritySettingsServiceStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SecuritySettingsServiceStubSettings.java
index 0cdb865c6326..ce4b42b492f4 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SecuritySettingsServiceStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SecuritySettingsServiceStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SecuritySettingsServiceStubSettings
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionEntityTypesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionEntityTypesStub.java
index eb6a649444cb..b66997b455ca 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionEntityTypesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionEntityTypesStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SessionEntityTypesStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionEntityTypesStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionEntityTypesStubSettings.java
index c3e500ba070c..2f7b47fd8996 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionEntityTypesStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionEntityTypesStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SessionEntityTypesStubSettings extends StubSettings<SessionEntityTypesStubSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionsStub.java
index 06c6f30430db..201c156e4540 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionsStub.java
@@ -37,6 +37,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SessionsStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionsStubSettings.java
index 16be9142c507..4334107f7e72 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionsStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SessionsStubSettings extends StubSettings<SessionsStubSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TestCasesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TestCasesStub.java
index bad16d212f85..c1f3d2e052e8 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TestCasesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TestCasesStub.java
@@ -56,6 +56,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TestCasesStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TestCasesStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TestCasesStubSettings.java
index c1852f76dea2..8c378c145cf8 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TestCasesStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TestCasesStubSettings.java
@@ -90,6 +90,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -165,6 +166,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TestCasesStubSettings extends StubSettings<TestCasesStubSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ToolsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ToolsStub.java
index 10641913a097..507ed92d4f5c 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ToolsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ToolsStub.java
@@ -43,6 +43,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ToolsStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ToolsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ToolsStubSettings.java
index 873f10eedf82..42ea4ab11d3c 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ToolsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ToolsStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ToolsStubSettings extends StubSettings<ToolsStubSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TransitionRouteGroupsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TransitionRouteGroupsStub.java
index 176b668de804..de2d07b3f907 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TransitionRouteGroupsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TransitionRouteGroupsStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TransitionRouteGroupsStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TransitionRouteGroupsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TransitionRouteGroupsStubSettings.java
index 1df4787d29c5..1bc81063c841 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TransitionRouteGroupsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TransitionRouteGroupsStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TransitionRouteGroupsStubSettings
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/VersionsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/VersionsStub.java
index 237885c75c24..66d73bf149d8 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/VersionsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/VersionsStub.java
@@ -42,6 +42,7 @@
 import com.google.protobuf.Empty;
 import com.google.protobuf.Struct;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class VersionsStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/VersionsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/VersionsStubSettings.java
index e524b29fd74f..45ba4095555d 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/VersionsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/VersionsStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class VersionsStubSettings extends StubSettings<VersionsStubSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/WebhooksStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/WebhooksStub.java
index 7a17eff7b1bf..47c9153594e6 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/WebhooksStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/WebhooksStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class WebhooksStub implements BackgroundResource {
 
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/WebhooksStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/WebhooksStubSettings.java
index e5ef0c028387..52c1e06b0c54 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/WebhooksStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/WebhooksStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class WebhooksStubSettings extends StubSettings<WebhooksStubSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentsClient.java
index 75e1de3c5e0a..379d67549f67 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentsClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -360,6 +361,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AgentsClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentsSettings.java
index 0e0d236d8a55..c2f2af6e4150 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentsSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AgentsSettings extends ClientSettings<AgentsSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogsClient.java
index 5e7928cbe348..1bdfd7d29100 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogsClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -191,6 +192,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ChangelogsClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogsSettings.java
index 423e0dfab90f..97a95ea72116 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogsSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ChangelogsSettings extends ClientSettings<ChangelogsSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ConversationHistoryClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ConversationHistoryClient.java
index e843cb6ce573..390b59b68de8 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ConversationHistoryClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ConversationHistoryClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -216,6 +217,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConversationHistoryClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ConversationHistorySettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ConversationHistorySettings.java
index dea5e6d7aea2..ee570d61a792 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ConversationHistorySettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ConversationHistorySettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConversationHistorySettings extends ClientSettings<ConversationHistorySettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentsClient.java
index 700448b4b1cd..e93bebdca8be 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentsClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -192,6 +193,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DeploymentsClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentsSettings.java
index de992c85cc94..8e88eb2cc59d 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentsSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DeploymentsSettings extends ClientSettings<DeploymentsSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypesClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypesClient.java
index a08a31ecd8dd..3da071df87ce 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypesClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypesClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -286,6 +287,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EntityTypesClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypesSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypesSettings.java
index 665dccc59357..50f7b206ca06 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypesSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypesSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EntityTypesSettings extends ClientSettings<EntityTypesSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentsClient.java
index 7d85549ead37..820e0cd5d751 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentsClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -335,6 +336,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EnvironmentsClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentsSettings.java
index 69c09d2de39b..44bc6274e7d6 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentsSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EnvironmentsSettings extends ClientSettings<EnvironmentsSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExamplesClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExamplesClient.java
index 89494c0b834b..42f191f8964e 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExamplesClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExamplesClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -249,6 +250,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ExamplesClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExamplesSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExamplesSettings.java
index 2641a995608b..ac8facd6eac0 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExamplesSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExamplesSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ExamplesSettings extends ClientSettings<ExamplesSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentsClient.java
index 1134e1eae4d8..1d8f42097d5e 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentsClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -288,6 +289,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ExperimentsClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentsSettings.java
index 16450b05a517..67bc951b4c1f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ExperimentsSettings extends ClientSettings<ExperimentsSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowsClient.java
index c7209edb21a2..d6d979d76e9c 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowsClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -347,6 +348,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FlowsClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowsSettings.java
index 512fcf4f6aa9..3b6a93dc3f82 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowsSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FlowsSettings extends ClientSettings<FlowsSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/GeneratorsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/GeneratorsClient.java
index 2f31eb6e0a28..fd1a2d1e725b 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/GeneratorsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/GeneratorsClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -249,6 +250,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GeneratorsClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/GeneratorsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/GeneratorsSettings.java
index d4923f1790fd..941cfd00f1ef 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/GeneratorsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/GeneratorsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GeneratorsSettings extends ClientSettings<GeneratorsSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentsClient.java
index 3440802b59fc..67e6004edac6 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentsClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -288,6 +289,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class IntentsClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentsSettings.java
index 2291a0eb2a0a..6f6cb283620f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentsSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class IntentsSettings extends ClientSettings<IntentsSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PagesClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PagesClient.java
index 397b606d13c2..a86e6fd1ae2b 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PagesClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PagesClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -247,6 +248,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PagesClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PagesSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PagesSettings.java
index 0acaed13ca33..68ec43c72515 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PagesSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PagesSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PagesSettings extends ClientSettings<PagesSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PlaybooksClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PlaybooksClient.java
index bce643339ef5..5da1cdf7e97d 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PlaybooksClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PlaybooksClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -382,6 +383,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PlaybooksClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PlaybooksSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PlaybooksSettings.java
index 51f05c43cfba..c1303ca4dd55 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PlaybooksSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PlaybooksSettings.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PlaybooksSettings extends ClientSettings<PlaybooksSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsServiceClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsServiceClient.java
index 8a5f319f3c8f..51bdd09d52de 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsServiceClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -256,6 +257,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SecuritySettingsServiceClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsServiceSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsServiceSettings.java
index 40f10c683e54..e3959bec3b1a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsServiceSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SecuritySettingsServiceSettings
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypesClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypesClient.java
index c6741957c499..9fad2566cc72 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypesClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypesClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -256,6 +257,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SessionEntityTypesClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypesSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypesSettings.java
index f80dfe45486c..17e5e6dcde27 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypesSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypesSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SessionEntityTypesSettings extends ClientSettings<SessionEntityTypesSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionsClient.java
index 185f805805df..3eaa0df95281 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionsClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -243,6 +244,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SessionsClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionsSettings.java
index 3149e707039c..aea60824b4e9 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SessionsSettings extends ClientSettings<SessionsSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCasesClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCasesClient.java
index 08ce55ee3056..0f026069f1b0 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCasesClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCasesClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -375,6 +376,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TestCasesClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCasesSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCasesSettings.java
index aea5a3457149..6267b0c795fe 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCasesSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCasesSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TestCasesSettings extends ClientSettings<TestCasesSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ToolsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ToolsClient.java
index 984941792be5..a6ed99759cb3 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ToolsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ToolsClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -363,6 +364,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ToolsClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ToolsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ToolsSettings.java
index b0a3ebcba98d..c0a0a2982395 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ToolsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ToolsSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ToolsSettings extends ClientSettings<ToolsSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupsClient.java
index 7ee4df84f68b..43a809ffddcb 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupsClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -262,6 +263,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TransitionRouteGroupsClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupsSettings.java
index b265ad7c461e..aeeedfdc2b82 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TransitionRouteGroupsSettings extends ClientSettings<TransitionRouteGroupsSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionsClient.java
index 71e53f98f23b..215c67ef9c0b 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionsClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -298,6 +299,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VersionsClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionsSettings.java
index e6bda5ebac47..1ac1e18a3dc4 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionsSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VersionsSettings extends ClientSettings<VersionsSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhooksClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhooksClient.java
index 21aecb0fd513..ac22b27b8ab4 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhooksClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhooksClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -248,6 +249,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class WebhooksClient implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhooksSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhooksSettings.java
index 96602516835c..1f6433bd0c33 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhooksSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhooksSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class WebhooksSettings extends ClientSettings<WebhooksSettings> {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/AgentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/AgentsStub.java
index 285980e038af..f8e6a425ce52 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/AgentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/AgentsStub.java
@@ -48,6 +48,7 @@
 import com.google.protobuf.Empty;
 import com.google.protobuf.Struct;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AgentsStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/AgentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/AgentsStubSettings.java
index 7c34799ca524..f1f6f362c519 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/AgentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/AgentsStubSettings.java
@@ -81,6 +81,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ChangelogsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ChangelogsStub.java
index 6b19e5ae6a39..c16811b2459d 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ChangelogsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ChangelogsStub.java
@@ -31,6 +31,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ChangelogsStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ChangelogsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ChangelogsStubSettings.java
index a5d35ba42a9d..03d4e709f53c 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ChangelogsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ChangelogsStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ConversationHistoryStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ConversationHistoryStub.java
index 2a44d6dab756..5685eb14d03e 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ConversationHistoryStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ConversationHistoryStub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ConversationHistoryStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ConversationHistoryStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ConversationHistoryStubSettings.java
index 877ac7aa22b5..71a43931ab3c 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ConversationHistoryStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ConversationHistoryStubSettings.java
@@ -64,6 +64,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/DeploymentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/DeploymentsStub.java
index a95c02917b45..4622822bfc0f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/DeploymentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/DeploymentsStub.java
@@ -31,6 +31,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DeploymentsStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/DeploymentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/DeploymentsStubSettings.java
index e3f88f5430f0..0464f4ccd9b2 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/DeploymentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/DeploymentsStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EntityTypesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EntityTypesStub.java
index 4f29e54efa04..462f102989ef 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EntityTypesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EntityTypesStub.java
@@ -44,6 +44,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class EntityTypesStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EntityTypesStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EntityTypesStubSettings.java
index 41524440c44e..5c75e7aa72ea 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EntityTypesStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EntityTypesStubSettings.java
@@ -77,6 +77,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EnvironmentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EnvironmentsStub.java
index 5e0712d674ef..8914a248b1e0 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EnvironmentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EnvironmentsStub.java
@@ -51,6 +51,7 @@
 import com.google.protobuf.Empty;
 import com.google.protobuf.Struct;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class EnvironmentsStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EnvironmentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EnvironmentsStubSettings.java
index 62d8ef88ca0c..966181b324d7 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EnvironmentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EnvironmentsStubSettings.java
@@ -85,6 +85,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -162,6 +163,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExamplesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExamplesStub.java
index 3566d1308239..266a717d5f23 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExamplesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExamplesStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ExamplesStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExamplesStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExamplesStubSettings.java
index 47812ebd8f21..9842c24112cc 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExamplesStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExamplesStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExperimentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExperimentsStub.java
index f5f14dd3c813..3b3fb9a70311 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExperimentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExperimentsStub.java
@@ -37,6 +37,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ExperimentsStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExperimentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExperimentsStubSettings.java
index fcf2540919b9..9c4699331add 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExperimentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExperimentsStubSettings.java
@@ -68,6 +68,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/FlowsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/FlowsStub.java
index f3f282d13024..d2816a8c5dc6 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/FlowsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/FlowsStub.java
@@ -47,6 +47,7 @@
 import com.google.protobuf.Empty;
 import com.google.protobuf.Struct;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class FlowsStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/FlowsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/FlowsStubSettings.java
index 9088e15c2329..3e6972b6f567 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/FlowsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/FlowsStubSettings.java
@@ -80,6 +80,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GeneratorsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GeneratorsStub.java
index 23538368c04e..be2bbe1dd8b9 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GeneratorsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GeneratorsStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class GeneratorsStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GeneratorsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GeneratorsStubSettings.java
index b6359774e2a4..b96164053d09 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GeneratorsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GeneratorsStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcAgentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcAgentsCallableFactory.java
index b82b622b7132..f6c5c9eeee0f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcAgentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcAgentsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAgentsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcAgentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcAgentsStub.java
index 8d036479790a..abf32affcf52 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcAgentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcAgentsStub.java
@@ -57,6 +57,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAgentsStub extends AgentsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcChangelogsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcChangelogsCallableFactory.java
index 1f3baa3ab91d..a61464ff8fba 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcChangelogsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcChangelogsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcChangelogsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcChangelogsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcChangelogsStub.java
index 1e965d3b998e..2c25fcf7e9ac 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcChangelogsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcChangelogsStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcChangelogsStub extends ChangelogsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcConversationHistoryCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcConversationHistoryCallableFactory.java
index c9eaaadfc0a9..2b956d3aa518 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcConversationHistoryCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcConversationHistoryCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConversationHistoryCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcConversationHistoryStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcConversationHistoryStub.java
index a0facd9638e3..61109d3d40f1 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcConversationHistoryStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcConversationHistoryStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConversationHistoryStub extends ConversationHistoryStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcDeploymentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcDeploymentsCallableFactory.java
index 6ddb6fddc9a1..e04c9be68f2a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcDeploymentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcDeploymentsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDeploymentsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcDeploymentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcDeploymentsStub.java
index 42b5c6a9c529..1e4b0c4e3b80 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcDeploymentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcDeploymentsStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDeploymentsStub extends DeploymentsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcEntityTypesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcEntityTypesCallableFactory.java
index 32196997409d..004036ef4785 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcEntityTypesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcEntityTypesCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEntityTypesCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcEntityTypesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcEntityTypesStub.java
index 154976a3388e..05a1332a88b9 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcEntityTypesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcEntityTypesStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEntityTypesStub extends EntityTypesStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcEnvironmentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcEnvironmentsCallableFactory.java
index 48f76a3a0955..5ddbf170c7df 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcEnvironmentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcEnvironmentsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEnvironmentsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcEnvironmentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcEnvironmentsStub.java
index c8c6f04af08a..2b89cf3e5242 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcEnvironmentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcEnvironmentsStub.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEnvironmentsStub extends EnvironmentsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcExamplesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcExamplesCallableFactory.java
index cbb71e5a05ec..4bc01903d59b 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcExamplesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcExamplesCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcExamplesCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcExamplesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcExamplesStub.java
index dde6f5868a96..bdeb1ab5678f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcExamplesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcExamplesStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcExamplesStub extends ExamplesStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcExperimentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcExperimentsCallableFactory.java
index e6caa1b78610..4060d41fbdd0 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcExperimentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcExperimentsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcExperimentsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcExperimentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcExperimentsStub.java
index 31d125eecf5e..d2e711a3f32b 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcExperimentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcExperimentsStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcExperimentsStub extends ExperimentsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcFlowsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcFlowsCallableFactory.java
index 7c08d3b1c67f..ff7c8766f733 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcFlowsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcFlowsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFlowsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcFlowsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcFlowsStub.java
index 3c30a78c1064..8d10595b68eb 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcFlowsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcFlowsStub.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFlowsStub extends FlowsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcGeneratorsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcGeneratorsCallableFactory.java
index dc250c4db2aa..fdbf391af4c0 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcGeneratorsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcGeneratorsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGeneratorsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcGeneratorsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcGeneratorsStub.java
index df567a84e078..f4580d670335 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcGeneratorsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcGeneratorsStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGeneratorsStub extends GeneratorsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcIntentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcIntentsCallableFactory.java
index a92e6afc9538..0d784356b6b0 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcIntentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcIntentsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcIntentsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcIntentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcIntentsStub.java
index 6e2af9a977ac..1af222edfb06 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcIntentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcIntentsStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcIntentsStub extends IntentsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcPagesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcPagesCallableFactory.java
index b6873957f64f..c76b363e4f8c 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcPagesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcPagesCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPagesCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcPagesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcPagesStub.java
index a358da914496..57b1ad6ec2ad 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcPagesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcPagesStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPagesStub extends PagesStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcPlaybooksCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcPlaybooksCallableFactory.java
index 8623167e6d65..57c698eccfa8 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcPlaybooksCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcPlaybooksCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPlaybooksCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcPlaybooksStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcPlaybooksStub.java
index f7492434ef6d..b442007a65e7 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcPlaybooksStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcPlaybooksStub.java
@@ -61,6 +61,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPlaybooksStub extends PlaybooksStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSecuritySettingsServiceCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSecuritySettingsServiceCallableFactory.java
index 380257a96dd0..8ae6f9be3710 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSecuritySettingsServiceCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSecuritySettingsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSecuritySettingsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSecuritySettingsServiceStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSecuritySettingsServiceStub.java
index 565e39e67f25..3b28be731be9 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSecuritySettingsServiceStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSecuritySettingsServiceStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSecuritySettingsServiceStub extends SecuritySettingsServiceStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSessionEntityTypesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSessionEntityTypesCallableFactory.java
index 259650ceb45a..524ac1879f1d 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSessionEntityTypesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSessionEntityTypesCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSessionEntityTypesCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSessionEntityTypesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSessionEntityTypesStub.java
index c79499703c83..90592729716a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSessionEntityTypesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSessionEntityTypesStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSessionEntityTypesStub extends SessionEntityTypesStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSessionsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSessionsCallableFactory.java
index 805db369d93e..1f8cea3aa723 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSessionsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSessionsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSessionsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSessionsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSessionsStub.java
index 2a9e3939a81b..f0df6cff24b5 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSessionsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcSessionsStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSessionsStub extends SessionsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcTestCasesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcTestCasesCallableFactory.java
index b298339137fe..8e6b58fdd0cf 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcTestCasesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcTestCasesCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTestCasesCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcTestCasesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcTestCasesStub.java
index 6a0a388c2bcb..271d46703891 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcTestCasesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcTestCasesStub.java
@@ -66,6 +66,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTestCasesStub extends TestCasesStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcToolsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcToolsCallableFactory.java
index d35deec58396..619187812eee 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcToolsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcToolsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcToolsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcToolsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcToolsStub.java
index 2bf3a3dedf88..6fddfc85aa28 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcToolsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcToolsStub.java
@@ -59,6 +59,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcToolsStub extends ToolsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcTransitionRouteGroupsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcTransitionRouteGroupsCallableFactory.java
index f1f91e90458b..0c68d648b474 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcTransitionRouteGroupsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcTransitionRouteGroupsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTransitionRouteGroupsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcTransitionRouteGroupsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcTransitionRouteGroupsStub.java
index 41a19e973750..940d905b623e 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcTransitionRouteGroupsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcTransitionRouteGroupsStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTransitionRouteGroupsStub extends TransitionRouteGroupsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcVersionsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcVersionsCallableFactory.java
index 4558cd47baed..0b958507ff54 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcVersionsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcVersionsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVersionsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcVersionsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcVersionsStub.java
index 18a33a0132e1..775a6e0f28e4 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcVersionsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcVersionsStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVersionsStub extends VersionsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcWebhooksCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcWebhooksCallableFactory.java
index ca9f82da5999..fc854e0cf320 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcWebhooksCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcWebhooksCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcWebhooksCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcWebhooksStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcWebhooksStub.java
index 90e4961a24a9..d743d250a769 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcWebhooksStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/GrpcWebhooksStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcWebhooksStub extends WebhooksStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonAgentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonAgentsCallableFactory.java
index 48be9b2573fa..fe6d052222bf 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonAgentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonAgentsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAgentsCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonAgentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonAgentsStub.java
index c490bb013f05..ea55d8e24df1 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonAgentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonAgentsStub.java
@@ -68,6 +68,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAgentsStub extends AgentsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonChangelogsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonChangelogsCallableFactory.java
index b132354c782b..f181074fec8f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonChangelogsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonChangelogsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonChangelogsCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonChangelogsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonChangelogsStub.java
index 85adfaa41fe9..b81752f0246e 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonChangelogsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonChangelogsStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonChangelogsStub extends ChangelogsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonConversationHistoryCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonConversationHistoryCallableFactory.java
index 8f1fe32916c7..23e18a6fa8ee 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonConversationHistoryCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonConversationHistoryCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationHistoryCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonConversationHistoryStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonConversationHistoryStub.java
index 461fac86cd19..5fcc81dfe785 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonConversationHistoryStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonConversationHistoryStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationHistoryStub extends ConversationHistoryStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonDeploymentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonDeploymentsCallableFactory.java
index 02c179b97e58..7f0a85e1be17 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonDeploymentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonDeploymentsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDeploymentsCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonDeploymentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonDeploymentsStub.java
index 4b69fd3b7510..bebb3b33755e 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonDeploymentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonDeploymentsStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDeploymentsStub extends DeploymentsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEntityTypesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEntityTypesCallableFactory.java
index 8c40847291c3..2e20a430c62a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEntityTypesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEntityTypesCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEntityTypesCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEntityTypesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEntityTypesStub.java
index 417adeaab50f..75b310809c04 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEntityTypesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEntityTypesStub.java
@@ -64,6 +64,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEntityTypesStub extends EntityTypesStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEnvironmentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEnvironmentsCallableFactory.java
index a24b617ad9cc..21453184271c 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEnvironmentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEnvironmentsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEnvironmentsCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEnvironmentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEnvironmentsStub.java
index c2d5018f3080..6f0db27505e6 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEnvironmentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEnvironmentsStub.java
@@ -71,6 +71,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -78,6 +79,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEnvironmentsStub extends EnvironmentsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExamplesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExamplesCallableFactory.java
index 6a33d3d1cac9..bff2f5f45c30 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExamplesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExamplesCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonExamplesCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExamplesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExamplesStub.java
index a28eb27184bb..54562d1092a1 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExamplesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExamplesStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonExamplesStub extends ExamplesStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExperimentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExperimentsCallableFactory.java
index b1d2ecfdb6b3..489a7e03a25d 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExperimentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExperimentsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonExperimentsCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExperimentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExperimentsStub.java
index c4ea6c275438..467cb40bf3de 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExperimentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExperimentsStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonExperimentsStub extends ExperimentsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonFlowsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonFlowsCallableFactory.java
index 6a96619b6bc9..d7636bdca640 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonFlowsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonFlowsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonFlowsCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonFlowsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonFlowsStub.java
index 25944cdf73f5..8db53276c433 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonFlowsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonFlowsStub.java
@@ -67,6 +67,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonFlowsStub extends FlowsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonGeneratorsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonGeneratorsCallableFactory.java
index fb730d10e57f..7d8c430d5f13 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonGeneratorsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonGeneratorsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGeneratorsCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonGeneratorsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonGeneratorsStub.java
index ad08e197a571..70b7b6a1d1fd 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonGeneratorsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonGeneratorsStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGeneratorsStub extends GeneratorsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonIntentsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonIntentsCallableFactory.java
index df8ae279d3a8..f23cfea62094 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonIntentsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonIntentsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonIntentsCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonIntentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonIntentsStub.java
index c299fe47d134..01e5f12178fe 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonIntentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonIntentsStub.java
@@ -64,6 +64,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonIntentsStub extends IntentsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPagesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPagesCallableFactory.java
index e928dbfc7c59..017312a606df 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPagesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPagesCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPagesCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPagesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPagesStub.java
index 76384a2705c3..ce4d6c7eaedc 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPagesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPagesStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPagesStub extends PagesStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPlaybooksCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPlaybooksCallableFactory.java
index b5de09274bff..0ae23addc27f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPlaybooksCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPlaybooksCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPlaybooksCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPlaybooksStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPlaybooksStub.java
index fab72655db75..aeeb2e8c9a56 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPlaybooksStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPlaybooksStub.java
@@ -72,6 +72,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -79,6 +80,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPlaybooksStub extends PlaybooksStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSecuritySettingsServiceCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSecuritySettingsServiceCallableFactory.java
index 2dfcfd372b7e..a4df9d713745 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSecuritySettingsServiceCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSecuritySettingsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSecuritySettingsServiceCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSecuritySettingsServiceStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSecuritySettingsServiceStub.java
index 092ba0c02080..17a06db13cfd 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSecuritySettingsServiceStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSecuritySettingsServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSecuritySettingsServiceStub extends SecuritySettingsServiceStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionEntityTypesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionEntityTypesCallableFactory.java
index 2d1334e82cd7..fd45f8b8af69 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionEntityTypesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionEntityTypesCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionEntityTypesCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionEntityTypesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionEntityTypesStub.java
index 2a960492449b..707ba4ff9e94 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionEntityTypesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionEntityTypesStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionEntityTypesStub extends SessionEntityTypesStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionsCallableFactory.java
index 812ee8ab69b0..b06250161c0f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionsCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionsStub.java
index 64555454146c..8e4276bbf309 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionsStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionsStub extends SessionsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTestCasesCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTestCasesCallableFactory.java
index 9cf27c6a07fa..3a04c0c8e978 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTestCasesCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTestCasesCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTestCasesCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTestCasesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTestCasesStub.java
index 7a7e27a8a32c..dc8eabc53a07 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTestCasesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTestCasesStub.java
@@ -77,6 +77,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTestCasesStub extends TestCasesStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonToolsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonToolsCallableFactory.java
index 28cb32c48834..508866b0b09c 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonToolsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonToolsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonToolsCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonToolsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonToolsStub.java
index 839d6f6830b5..ce19a3cc9227 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonToolsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonToolsStub.java
@@ -70,6 +70,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonToolsStub extends ToolsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTransitionRouteGroupsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTransitionRouteGroupsCallableFactory.java
index 449a286371f5..b3a51d53a72d 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTransitionRouteGroupsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTransitionRouteGroupsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTransitionRouteGroupsCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTransitionRouteGroupsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTransitionRouteGroupsStub.java
index c7a9c2c62ad3..d5b644bc1203 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTransitionRouteGroupsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTransitionRouteGroupsStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTransitionRouteGroupsStub extends TransitionRouteGroupsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonVersionsCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonVersionsCallableFactory.java
index 3b02c58f4431..a7fbc4509810 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonVersionsCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonVersionsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonVersionsCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonVersionsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonVersionsStub.java
index 1661bbc81bea..91d494a5a22f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonVersionsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonVersionsStub.java
@@ -63,6 +63,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonVersionsStub extends VersionsStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonWebhooksCallableFactory.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonWebhooksCallableFactory.java
index 1a28f51198eb..7932e6af54a2 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonWebhooksCallableFactory.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonWebhooksCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonWebhooksCallableFactory
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonWebhooksStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonWebhooksStub.java
index 013f2352238a..13d5f79e547c 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonWebhooksStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonWebhooksStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonWebhooksStub extends WebhooksStub {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/IntentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/IntentsStub.java
index 6b8bc7136a6d..b8d41d925858 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/IntentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/IntentsStub.java
@@ -44,6 +44,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class IntentsStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/IntentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/IntentsStubSettings.java
index 79a57c24a07f..2903cce5f37f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/IntentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/IntentsStubSettings.java
@@ -77,6 +77,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PagesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PagesStub.java
index d8a81d07ee7a..02bebb9bb26a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PagesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PagesStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PagesStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PagesStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PagesStubSettings.java
index 10cac0ae8b62..cb2277b80eb9 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PagesStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PagesStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PlaybooksStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PlaybooksStub.java
index 36da844e67f2..e3eda241c6e2 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PlaybooksStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PlaybooksStub.java
@@ -52,6 +52,7 @@
 import com.google.protobuf.Empty;
 import com.google.protobuf.Struct;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PlaybooksStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PlaybooksStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PlaybooksStubSettings.java
index fe21f7242ef0..74f32df63811 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PlaybooksStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PlaybooksStubSettings.java
@@ -85,6 +85,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -160,6 +161,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SecuritySettingsServiceStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SecuritySettingsServiceStub.java
index 42591095b8d5..0c5ee237f4fc 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SecuritySettingsServiceStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SecuritySettingsServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SecuritySettingsServiceStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SecuritySettingsServiceStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SecuritySettingsServiceStubSettings.java
index f51c731b99b9..5692582e149f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SecuritySettingsServiceStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SecuritySettingsServiceStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionEntityTypesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionEntityTypesStub.java
index df0d0d1da136..7fdb39e79aa5 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionEntityTypesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionEntityTypesStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SessionEntityTypesStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionEntityTypesStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionEntityTypesStubSettings.java
index 47e442e5859e..6fa539aa9fd1 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionEntityTypesStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionEntityTypesStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionsStub.java
index 5bced04dceeb..62a0e4c94373 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionsStub.java
@@ -38,6 +38,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SessionsStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionsStubSettings.java
index e65986105fec..27d575625a4c 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionsStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TestCasesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TestCasesStub.java
index 64db566245e9..a500e6b8699c 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TestCasesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TestCasesStub.java
@@ -57,6 +57,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class TestCasesStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TestCasesStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TestCasesStubSettings.java
index 6e5eea79201c..4ebd4bfc2247 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TestCasesStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TestCasesStubSettings.java
@@ -90,6 +90,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -165,6 +166,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ToolsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ToolsStub.java
index 7216f1a9669b..0e0a5a615efa 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ToolsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ToolsStub.java
@@ -50,6 +50,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ToolsStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ToolsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ToolsStubSettings.java
index 8dbcca5a3b5a..3599f2cb2b17 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ToolsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ToolsStubSettings.java
@@ -83,6 +83,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -158,6 +159,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TransitionRouteGroupsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TransitionRouteGroupsStub.java
index 89f824625eab..33d44afdfe66 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TransitionRouteGroupsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TransitionRouteGroupsStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class TransitionRouteGroupsStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TransitionRouteGroupsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TransitionRouteGroupsStubSettings.java
index 70e2f50eedfd..82b7de419406 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TransitionRouteGroupsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TransitionRouteGroupsStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/VersionsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/VersionsStub.java
index 2e135bde2898..4ffd98bd75ec 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/VersionsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/VersionsStub.java
@@ -43,6 +43,7 @@
 import com.google.protobuf.Empty;
 import com.google.protobuf.Struct;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class VersionsStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/VersionsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/VersionsStubSettings.java
index 948bb4c013a1..815840927c86 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/VersionsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/VersionsStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/WebhooksStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/WebhooksStub.java
index ec0773e27b2a..551e13c14db7 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/WebhooksStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/WebhooksStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class WebhooksStub implements BackgroundResource {
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/WebhooksStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/WebhooksStubSettings.java
index 1d3362703cbb..5bc1ea925274 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/WebhooksStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/WebhooksStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentGenerativeSettingsName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentGenerativeSettingsName.java
index 8cce9daa2541..34c504604627 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentGenerativeSettingsName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentGenerativeSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentGenerativeSettingsName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentName.java
index bf2eb951d511..8d05a39900a5 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentValidationResultName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentValidationResultName.java
index 7ccacf33353d..ef736b647058 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentValidationResultName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentValidationResultName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentValidationResultName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogName.java
index 7f871af99706..2ea69475a56d 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ChangelogName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_CHANGELOG =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ContinuousTestResultName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ContinuousTestResultName.java
index 58fc0b96caec..f898dba467bb 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ContinuousTestResultName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ContinuousTestResultName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContinuousTestResultName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_ENVIRONMENT_CONTINUOUS_TEST_RESULT =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentName.java
index b30972eb16c2..7df87c89a8cd 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_ENVIRONMENT_DEPLOYMENT =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypeName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypeName.java
index b1608aa96b29..ed6aa0059d97 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypeName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntityTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_ENTITY_TYPE =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentName.java
index 2d91985fa420..5d98362950e1 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EnvironmentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_ENVIRONMENT =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ExampleName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ExampleName.java
index d4464c7ca9b3..7b3742ab4c95 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ExampleName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ExampleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExampleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_PLAYBOOK_EXAMPLE =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentName.java
index d48d62042691..8bf211c9723a 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExperimentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_ENVIRONMENT_EXPERIMENT =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowName.java
index 1270ecad0160..582b53608007 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FlowName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_FLOW =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowValidationResultName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowValidationResultName.java
index 171a4102c354..db8b3b0b2a64 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowValidationResultName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowValidationResultName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FlowValidationResultName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_FLOW =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/GeneratorName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/GeneratorName.java
index 8e608372a5a0..1e68c1d347e7 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/GeneratorName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/GeneratorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GeneratorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_GENERATOR =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentName.java
index b79674003893..fa0fc388e4ac 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IntentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_INTENT =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/LocationName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/LocationName.java
index e4956c354a28..e97cc45b3961 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/LocationName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/PageName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/PageName.java
index 5d6d86510d60..8c8e101b58bf 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/PageName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/PageName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PageName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_FLOW_PAGE =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/PlaybookName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/PlaybookName.java
index edef3c139ce4..7110680ac0b7 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/PlaybookName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/PlaybookName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PlaybookName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_PLAYBOOK =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/PlaybookVersionName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/PlaybookVersionName.java
index 6877816f10dd..7ecf0ee08a50 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/PlaybookVersionName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/PlaybookVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PlaybookVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_PLAYBOOK_VERSION =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsName.java
index 26a7d5b28577..e7c60c31db75 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecuritySettingsName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SECURITY_SETTINGS =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypeName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypeName.java
index bb85f33c6a57..3ea054940560 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypeName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypeName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionEntityTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_SESSION_ENTITY_TYPE =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionName.java
index c0d12044ce84..066da9df616b 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_SESSION =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCaseName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCaseName.java
index adf3cf59290a..d95f774a7329 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCaseName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCaseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TestCaseName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_TEST_CASE =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCaseResultName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCaseResultName.java
index 570c9b1fe62d..a996bc671674 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCaseResultName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCaseResultName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TestCaseResultName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_TEST_CASE_RESULT =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ToolName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ToolName.java
index d4876518176b..f21e3d2dec8e 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ToolName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ToolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ToolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_TOOL =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ToolVersionName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ToolVersionName.java
index d06d4ee7d782..ca8bff5f56ac 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ToolVersionName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/ToolVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ToolVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_TOOL_VERSION =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupName.java
index 2048546279c6..bf30c2abe4f9 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TransitionRouteGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_FLOW_TRANSITION_ROUTE_GROUP =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionName.java
index 88077622c795..3305253132d0 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_FLOW_VERSION =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhookName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhookName.java
index ea7dafaa560d..f733f4f95640 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhookName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhookName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WebhookName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_WEBHOOK =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentGenerativeSettingsName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentGenerativeSettingsName.java
index 3ba442183b8a..62a181703fbc 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentGenerativeSettingsName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentGenerativeSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentGenerativeSettingsName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentName.java
index 414330670221..bd3fc3f8bc96 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentValidationResultName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentValidationResultName.java
index 4c7e75d555b1..f5d32e0027e0 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentValidationResultName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentValidationResultName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentValidationResultName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogName.java
index e4a6ef50d159..d71acad79cba 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ChangelogName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_CHANGELOG =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ContinuousTestResultName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ContinuousTestResultName.java
index 84bdd540e876..9f9e9ab07741 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ContinuousTestResultName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ContinuousTestResultName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContinuousTestResultName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_ENVIRONMENT_CONTINUOUS_TEST_RESULT =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ConversationName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ConversationName.java
index ab2dd1e3a571..0661713aca6c 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ConversationName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ConversationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_CONVERSATION =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentName.java
index a15620a914d8..ab6b7e776aa7 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_ENVIRONMENT_DEPLOYMENT =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypeName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypeName.java
index b3ed50ec9908..1492368c1095 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypeName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntityTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_ENTITY_TYPE =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentName.java
index cbd135317bca..5643e7baa519 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EnvironmentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_ENVIRONMENT =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExampleName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExampleName.java
index ca76fa1f0a1e..2fb4474d5be5 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExampleName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExampleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExampleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_PLAYBOOK_EXAMPLE =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentName.java
index d415eb11ea2f..975a7d146112 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExperimentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_ENVIRONMENT_EXPERIMENT =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowName.java
index 5b4ceae2ceeb..093af2d59213 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FlowName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_FLOW =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowValidationResultName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowValidationResultName.java
index 60e14863a0b8..fcb52e04bd34 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowValidationResultName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowValidationResultName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FlowValidationResultName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_FLOW =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/GeneratorName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/GeneratorName.java
index 78b92f27d54e..cf03c7acceec 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/GeneratorName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/GeneratorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GeneratorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_GENERATOR =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentName.java
index 52d64c18ba0f..02d68bb93fd7 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IntentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_INTENT =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/LocationName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/LocationName.java
index c79110c26e25..87e816b45786 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/LocationName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PageName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PageName.java
index 5523685d760f..2e0d6cadb67e 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PageName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PageName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PageName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_FLOW_PAGE =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PlaybookName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PlaybookName.java
index b6cff8bc1aee..704c30c489fc 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PlaybookName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PlaybookName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PlaybookName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_PLAYBOOK =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PlaybookVersionName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PlaybookVersionName.java
index 4ceb93d9e544..8e2908e844a0 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PlaybookVersionName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PlaybookVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PlaybookVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_PLAYBOOK_VERSION =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsName.java
index f91459ff0002..6e9d82a5ddf6 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecuritySettingsName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SECURITY_SETTINGS =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypeName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypeName.java
index 2caf60e6d504..2737b213d3d7 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypeName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypeName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionEntityTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_SESSION_ENTITY_TYPE =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionName.java
index 93a2f58d7287..31a49023b3b7 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_SESSION =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCaseName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCaseName.java
index e2c90f79d3b8..662137f8af4f 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCaseName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCaseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TestCaseName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_TEST_CASE =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCaseResultName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCaseResultName.java
index 919e5aeaabb5..f7001aa0d2a1 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCaseResultName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCaseResultName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TestCaseResultName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_TEST_CASE_RESULT =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ToolName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ToolName.java
index e19b0e188b34..cbb3e79e33f6 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ToolName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ToolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ToolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_TOOL =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ToolVersionName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ToolVersionName.java
index 9acc82830f68..59d647e22901 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ToolVersionName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ToolVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ToolVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_TOOL_VERSION =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupName.java
index 1335570424a9..6db7322cfde5 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TransitionRouteGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_FLOW_TRANSITION_ROUTE_GROUP =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionName.java
index ab611f517793..70f3bd0a3a81 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_FLOW_VERSION =
diff --git a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhookName.java b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhookName.java
index 35784975c50c..a641e255a07c 100644
--- a/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhookName.java
+++ b/java-dialogflow-cx/proto-google-cloud-dialogflow-cx-v3beta1/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhookName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WebhookName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_WEBHOOK =
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/AgentsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/AgentsClient.java
index fff95f531bc1..c341ff473607 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/AgentsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/AgentsClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -338,6 +339,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentsClient implements BackgroundResource {
   private final AgentsSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/AgentsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/AgentsSettings.java
index e197908f0d71..c1aa9f611e0d 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/AgentsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/AgentsSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentsSettings extends ClientSettings<AgentsSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/AnswerRecordsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/AnswerRecordsClient.java
index a8e230a22daf..eee1aa7bab5c 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/AnswerRecordsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/AnswerRecordsClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -193,6 +194,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnswerRecordsClient implements BackgroundResource {
   private final AnswerRecordsSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/AnswerRecordsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/AnswerRecordsSettings.java
index 1e2d5964a137..153a9774f991 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/AnswerRecordsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/AnswerRecordsSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnswerRecordsSettings extends ClientSettings<AnswerRecordsSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ContextsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ContextsClient.java
index efb9926790f7..7885b552e2de 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ContextsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ContextsClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -268,6 +269,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContextsClient implements BackgroundResource {
   private final ContextsSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ContextsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ContextsSettings.java
index 53ed61d0b530..7f3afd40430e 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ContextsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ContextsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContextsSettings extends ClientSettings<ContextsSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationDatasetsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationDatasetsClient.java
index a2a3946785d3..87ecfcf8605c 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationDatasetsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationDatasetsClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -265,6 +266,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationDatasetsClient implements BackgroundResource {
   private final ConversationDatasetsSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationDatasetsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationDatasetsSettings.java
index ed70bfc5b5fd..b9294916d352 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationDatasetsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationDatasetsSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationDatasetsSettings extends ClientSettings<ConversationDatasetsSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationModelsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationModelsClient.java
index 493a30746911..619903d9f2d8 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationModelsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationModelsClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -331,6 +332,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationModelsClient implements BackgroundResource {
   private final ConversationModelsSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationModelsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationModelsSettings.java
index bacda232afa4..48cdb57f646a 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationModelsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationModelsSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationModelsSettings extends ClientSettings<ConversationModelsSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationProfilesClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationProfilesClient.java
index 6b120b235c23..4a15da4da365 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationProfilesClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationProfilesClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -310,6 +311,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationProfilesClient implements BackgroundResource {
   private final ConversationProfilesSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationProfilesSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationProfilesSettings.java
index 93c4f431c3d6..8dfc33363a4a 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationProfilesSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationProfilesSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationProfilesSettings extends ClientSettings<ConversationProfilesSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationsClient.java
index cb02762be056..749b5c70ce87 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationsClient.java
@@ -36,6 +36,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -356,6 +357,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationsClient implements BackgroundResource {
   private final ConversationsSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationsSettings.java
index 832c511221b7..a628cb09ced4 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ConversationsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationsSettings extends ClientSettings<ConversationsSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/DocumentsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/DocumentsClient.java
index 8f2e0ee35787..06fb67f2f3be 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/DocumentsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/DocumentsClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -321,6 +322,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentsClient implements BackgroundResource {
   private final DocumentsSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/DocumentsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/DocumentsSettings.java
index ce47e8cc07ff..ae8ba49e9038 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/DocumentsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/DocumentsSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentsSettings extends ClientSettings<DocumentsSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EncryptionSpecServiceClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EncryptionSpecServiceClient.java
index ee0ba9093770..fcbab0d0b0a8 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EncryptionSpecServiceClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EncryptionSpecServiceClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -199,6 +200,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EncryptionSpecServiceClient implements BackgroundResource {
   private final EncryptionSpecServiceSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EncryptionSpecServiceSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EncryptionSpecServiceSettings.java
index 8d198a7eb426..933eb5e40b69 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EncryptionSpecServiceSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EncryptionSpecServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EncryptionSpecServiceSettings extends ClientSettings<EncryptionSpecServiceSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EntityTypesClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EntityTypesClient.java
index 2d70add01ac6..23c5afa8ed08 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EntityTypesClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EntityTypesClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -378,6 +379,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntityTypesClient implements BackgroundResource {
   private final EntityTypesSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EntityTypesSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EntityTypesSettings.java
index 7f06a1205845..cc7be96cc68b 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EntityTypesSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EntityTypesSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntityTypesSettings extends ClientSettings<EntityTypesSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EnvironmentsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EnvironmentsClient.java
index 03c70f71af32..4650ad2ec7cf 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EnvironmentsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EnvironmentsClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -247,6 +248,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EnvironmentsClient implements BackgroundResource {
   private final EnvironmentsSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EnvironmentsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EnvironmentsSettings.java
index 9533d63b9394..ca680f00a308 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EnvironmentsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/EnvironmentsSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EnvironmentsSettings extends ClientSettings<EnvironmentsSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/FulfillmentsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/FulfillmentsClient.java
index 85a5074fd732..2fbb63e84763 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/FulfillmentsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/FulfillmentsClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -188,6 +189,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FulfillmentsClient implements BackgroundResource {
   private final FulfillmentsSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/FulfillmentsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/FulfillmentsSettings.java
index cf8550067b15..90abd27effd3 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/FulfillmentsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/FulfillmentsSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FulfillmentsSettings extends ClientSettings<FulfillmentsSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/GeneratorEvaluationsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/GeneratorEvaluationsClient.java
index c5462b6fe0f7..ad91fa640556 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/GeneratorEvaluationsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/GeneratorEvaluationsClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -241,6 +242,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GeneratorEvaluationsClient implements BackgroundResource {
   private final GeneratorEvaluationsSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/GeneratorEvaluationsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/GeneratorEvaluationsSettings.java
index 7622e731d797..5f2fdeeac8ca 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/GeneratorEvaluationsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/GeneratorEvaluationsSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GeneratorEvaluationsSettings extends ClientSettings<GeneratorEvaluationsSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/GeneratorsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/GeneratorsClient.java
index 629bded86d05..b0b87db38243 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/GeneratorsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/GeneratorsClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -252,6 +253,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GeneratorsClient implements BackgroundResource {
   private final GeneratorsSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/GeneratorsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/GeneratorsSettings.java
index e77e5929b702..126db2dd0241 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/GeneratorsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/GeneratorsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GeneratorsSettings extends ClientSettings<GeneratorsSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/IntentsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/IntentsClient.java
index e87d5f093d28..fd02284e8f53 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/IntentsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/IntentsClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -310,6 +311,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IntentsClient implements BackgroundResource {
   private final IntentsSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/IntentsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/IntentsSettings.java
index 7e7f4debba6c..e345facc3729 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/IntentsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/IntentsSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IntentsSettings extends ClientSettings<IntentsSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBasesClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBasesClient.java
index 5ba85e67b312..db25139668bc 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBasesClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBasesClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -252,6 +253,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class KnowledgeBasesClient implements BackgroundResource {
   private final KnowledgeBasesSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBasesSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBasesSettings.java
index fc1b87c60c5d..4fa61dde7e0c 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBasesSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBasesSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class KnowledgeBasesSettings extends ClientSettings<KnowledgeBasesSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ParticipantsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ParticipantsClient.java
index 89b31fc595bd..24bcf4dfa057 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ParticipantsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ParticipantsClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -337,6 +338,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ParticipantsClient implements BackgroundResource {
   private final ParticipantsSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ParticipantsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ParticipantsSettings.java
index 7f12bf011ae4..49a016e979d0 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ParticipantsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ParticipantsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ParticipantsSettings extends ClientSettings<ParticipantsSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SessionEntityTypesClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SessionEntityTypesClient.java
index e49c9543aa02..9880ae8cda97 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SessionEntityTypesClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SessionEntityTypesClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -262,6 +263,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionEntityTypesClient implements BackgroundResource {
   private final SessionEntityTypesSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SessionEntityTypesSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SessionEntityTypesSettings.java
index 5b7e2f881a38..35e96a443b15 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SessionEntityTypesSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SessionEntityTypesSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionEntityTypesSettings extends ClientSettings<SessionEntityTypesSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SessionsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SessionsClient.java
index a837a392626c..e177e627fa7b 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SessionsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SessionsClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -188,6 +189,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionsClient implements BackgroundResource {
   private final SessionsSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SessionsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SessionsSettings.java
index 283f9eabe55b..28cb37e16c4f 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SessionsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SessionsSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionsSettings extends ClientSettings<SessionsSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SipTrunksClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SipTrunksClient.java
index 76259569f728..808b0d9f0ef4 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SipTrunksClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SipTrunksClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -248,6 +249,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SipTrunksClient implements BackgroundResource {
   private final SipTrunksSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SipTrunksSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SipTrunksSettings.java
index cab929a2b691..f9438db660a5 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SipTrunksSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/SipTrunksSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SipTrunksSettings extends ClientSettings<SipTrunksSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ToolsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ToolsClient.java
index b8525c442a8d..9e325afc2bc1 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ToolsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ToolsClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -249,6 +250,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ToolsClient implements BackgroundResource {
   private final ToolsSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ToolsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ToolsSettings.java
index 1260d38c3c98..be9515284ca3 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ToolsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ToolsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ToolsSettings extends ClientSettings<ToolsSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/VersionsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/VersionsClient.java
index f5fb8141d8dd..7a9155a90f53 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/VersionsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/VersionsClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -249,6 +250,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VersionsClient implements BackgroundResource {
   private final VersionsSettings settings;
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/VersionsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/VersionsSettings.java
index 54f5d4a6681d..6d1372f37cf1 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/VersionsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/VersionsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VersionsSettings extends ClientSettings<VersionsSettings> {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/AgentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/AgentsStub.java
index 05d642b4a808..e03f2d15bf18 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/AgentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/AgentsStub.java
@@ -44,6 +44,7 @@
 import com.google.protobuf.Empty;
 import com.google.protobuf.Struct;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AgentsStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/AgentsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/AgentsStubSettings.java
index 6e7f1ec41776..412e8e88b972 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/AgentsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/AgentsStubSettings.java
@@ -78,6 +78,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AgentsStubSettings extends StubSettings<AgentsStubSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/AnswerRecordsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/AnswerRecordsStub.java
index f2019af72f86..12e6a96b5001 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/AnswerRecordsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/AnswerRecordsStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AnswerRecordsStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/AnswerRecordsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/AnswerRecordsStubSettings.java
index e4bfcc0208e2..de2bc5fc755d 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/AnswerRecordsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/AnswerRecordsStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AnswerRecordsStubSettings extends StubSettings<AnswerRecordsStubSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ContextsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ContextsStub.java
index 0ae433e13f0a..6c06149ada4e 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ContextsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ContextsStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ContextsStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ContextsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ContextsStubSettings.java
index 633f0e73be37..7fa9236f2dac 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ContextsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ContextsStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ContextsStubSettings extends StubSettings<ContextsStubSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationDatasetsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationDatasetsStub.java
index e5ea07cec66b..864a80ed1072 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationDatasetsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationDatasetsStub.java
@@ -41,6 +41,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ConversationDatasetsStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationDatasetsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationDatasetsStubSettings.java
index be6c017d0ced..132799cfa708 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationDatasetsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationDatasetsStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ConversationDatasetsStubSettings
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationModelsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationModelsStub.java
index 89355a1a180c..0c7c686a8337 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationModelsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationModelsStub.java
@@ -49,6 +49,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ConversationModelsStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationModelsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationModelsStubSettings.java
index 78c2ecba5550..53e4798275eb 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationModelsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationModelsStubSettings.java
@@ -83,6 +83,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -161,6 +162,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ConversationModelsStubSettings extends StubSettings<ConversationModelsStubSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationProfilesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationProfilesStub.java
index 540d3e63ffcc..343a840a7436 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationProfilesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationProfilesStub.java
@@ -41,6 +41,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ConversationProfilesStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationProfilesStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationProfilesStubSettings.java
index 6729a9a774b0..d84f17252064 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationProfilesStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationProfilesStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ConversationProfilesStubSettings
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationsStub.java
index 6024d6cee3bf..80809187ed7a 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationsStub.java
@@ -47,6 +47,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ConversationsStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationsStubSettings.java
index 2aa9e1c51424..2ea8ef71f5bd 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ConversationsStubSettings.java
@@ -80,6 +80,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ConversationsStubSettings extends StubSettings<ConversationsStubSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/DocumentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/DocumentsStub.java
index 6429f4f891d1..a6b7b7b51b25 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/DocumentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/DocumentsStub.java
@@ -42,6 +42,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DocumentsStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/DocumentsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/DocumentsStubSettings.java
index 670a8bd75858..5c7c9c2bef9b 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/DocumentsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/DocumentsStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DocumentsStubSettings extends StubSettings<DocumentsStubSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EncryptionSpecServiceStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EncryptionSpecServiceStub.java
index 82dce660e08b..740dec2c617d 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EncryptionSpecServiceStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EncryptionSpecServiceStub.java
@@ -33,6 +33,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EncryptionSpecServiceStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EncryptionSpecServiceStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EncryptionSpecServiceStubSettings.java
index 9c2ebfe29985..c4123637da9d 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EncryptionSpecServiceStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EncryptionSpecServiceStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EncryptionSpecServiceStubSettings
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EntityTypesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EntityTypesStub.java
index c5003ebb52a6..e9cda424b9b7 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EntityTypesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EntityTypesStub.java
@@ -44,6 +44,7 @@
 import com.google.protobuf.Empty;
 import com.google.protobuf.Struct;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EntityTypesStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EntityTypesStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EntityTypesStubSettings.java
index 6a3393c0c7fe..55aac9e0c8e8 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EntityTypesStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EntityTypesStubSettings.java
@@ -78,6 +78,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EntityTypesStubSettings extends StubSettings<EntityTypesStubSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EnvironmentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EnvironmentsStub.java
index c3c07b3cf251..42d5d5473306 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EnvironmentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EnvironmentsStub.java
@@ -37,6 +37,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EnvironmentsStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EnvironmentsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EnvironmentsStubSettings.java
index 8dacba277ec1..3c8c8ead692c 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EnvironmentsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/EnvironmentsStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EnvironmentsStubSettings extends StubSettings<EnvironmentsStubSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/FulfillmentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/FulfillmentsStub.java
index cadfd4be38c8..bcf71594a5dd 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/FulfillmentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/FulfillmentsStub.java
@@ -28,6 +28,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FulfillmentsStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/FulfillmentsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/FulfillmentsStubSettings.java
index e8cfcbb75299..d053f9a87874 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/FulfillmentsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/FulfillmentsStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FulfillmentsStubSettings extends StubSettings<FulfillmentsStubSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GeneratorEvaluationsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GeneratorEvaluationsStub.java
index 945bd7faf037..b2593ff421c5 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GeneratorEvaluationsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GeneratorEvaluationsStub.java
@@ -37,6 +37,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GeneratorEvaluationsStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GeneratorEvaluationsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GeneratorEvaluationsStubSettings.java
index f5d1411557d2..a46adec92932 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GeneratorEvaluationsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GeneratorEvaluationsStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -149,6 +150,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GeneratorEvaluationsStubSettings
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GeneratorsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GeneratorsStub.java
index 3c485c226bf3..3b2d96c5d52c 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GeneratorsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GeneratorsStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GeneratorsStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GeneratorsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GeneratorsStubSettings.java
index 4d15183cf2cf..3b945a7a67d7 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GeneratorsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GeneratorsStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GeneratorsStubSettings extends StubSettings<GeneratorsStubSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcAgentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcAgentsCallableFactory.java
index 1feec75acea4..656bd0ad32bd 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcAgentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcAgentsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAgentsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcAgentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcAgentsStub.java
index 3c99c9a9dbc9..624bddb47448 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcAgentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcAgentsStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAgentsStub extends AgentsStub {
   private static final MethodDescriptor<GetAgentRequest, Agent> getAgentMethodDescriptor =
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcAnswerRecordsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcAnswerRecordsCallableFactory.java
index fcec2d4a4ac4..c83730e89057 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcAnswerRecordsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcAnswerRecordsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAnswerRecordsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcAnswerRecordsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcAnswerRecordsStub.java
index dc9f0f82bc1b..6be7a0b91a80 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcAnswerRecordsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcAnswerRecordsStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAnswerRecordsStub extends AnswerRecordsStub {
   private static final MethodDescriptor<ListAnswerRecordsRequest, ListAnswerRecordsResponse>
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcContextsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcContextsCallableFactory.java
index 6a89526e5207..9a607979ad78 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcContextsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcContextsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcContextsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcContextsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcContextsStub.java
index d9f26ea4c0b1..72726cb6c727 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcContextsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcContextsStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcContextsStub extends ContextsStub {
   private static final MethodDescriptor<ListContextsRequest, ListContextsResponse>
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationDatasetsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationDatasetsCallableFactory.java
index ef523b8d03b5..091c000a12c1 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationDatasetsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationDatasetsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConversationDatasetsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationDatasetsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationDatasetsStub.java
index d2775a898815..350f79a997c7 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationDatasetsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationDatasetsStub.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConversationDatasetsStub extends ConversationDatasetsStub {
   private static final MethodDescriptor<CreateConversationDatasetRequest, Operation>
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationModelsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationModelsCallableFactory.java
index 7ee4c66ced2c..989fc4067ad3 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationModelsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationModelsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConversationModelsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationModelsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationModelsStub.java
index 5f5194406fe9..98dcffdbbb48 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationModelsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationModelsStub.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConversationModelsStub extends ConversationModelsStub {
   private static final MethodDescriptor<CreateConversationModelRequest, Operation>
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationProfilesCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationProfilesCallableFactory.java
index 88efe027b35a..42c7e066ef18 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationProfilesCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationProfilesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConversationProfilesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationProfilesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationProfilesStub.java
index 03713f7b7dab..61305c7c1ac3 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationProfilesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationProfilesStub.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConversationProfilesStub extends ConversationProfilesStub {
   private static final MethodDescriptor<
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationsCallableFactory.java
index 9e284c2f1c19..f734663e3100 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConversationsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationsStub.java
index aec9c4a6d013..cfe28418e7b6 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcConversationsStub.java
@@ -57,6 +57,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConversationsStub extends ConversationsStub {
   private static final MethodDescriptor<CreateConversationRequest, Conversation>
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcDocumentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcDocumentsCallableFactory.java
index b8af2c38e13b..92c5456109d6 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcDocumentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcDocumentsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDocumentsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcDocumentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcDocumentsStub.java
index cbdd594cbb9e..ae6ff54bdc4e 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcDocumentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcDocumentsStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDocumentsStub extends DocumentsStub {
   private static final MethodDescriptor<ListDocumentsRequest, ListDocumentsResponse>
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEncryptionSpecServiceCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEncryptionSpecServiceCallableFactory.java
index 0c3e5ab82cc6..020cc400be22 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEncryptionSpecServiceCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEncryptionSpecServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEncryptionSpecServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEncryptionSpecServiceStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEncryptionSpecServiceStub.java
index e94213585506..c58d9e6c7b42 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEncryptionSpecServiceStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEncryptionSpecServiceStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEncryptionSpecServiceStub extends EncryptionSpecServiceStub {
   private static final MethodDescriptor<GetEncryptionSpecRequest, EncryptionSpec>
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEntityTypesCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEntityTypesCallableFactory.java
index 0ddcf266703d..fc25f8846ec8 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEntityTypesCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEntityTypesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEntityTypesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEntityTypesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEntityTypesStub.java
index 296e6af9dfbd..c1b043960340 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEntityTypesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEntityTypesStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEntityTypesStub extends EntityTypesStub {
   private static final MethodDescriptor<ListEntityTypesRequest, ListEntityTypesResponse>
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEnvironmentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEnvironmentsCallableFactory.java
index 2a61a2c1debc..1ce895ff83de 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEnvironmentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEnvironmentsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEnvironmentsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEnvironmentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEnvironmentsStub.java
index f0758fde81fe..cfaa038f6f6f 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEnvironmentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcEnvironmentsStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEnvironmentsStub extends EnvironmentsStub {
   private static final MethodDescriptor<ListEnvironmentsRequest, ListEnvironmentsResponse>
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcFulfillmentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcFulfillmentsCallableFactory.java
index 67dbc9047e50..c66c0c925235 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcFulfillmentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcFulfillmentsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFulfillmentsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcFulfillmentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcFulfillmentsStub.java
index b05c1c4b0034..c49fd37388e0 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcFulfillmentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcFulfillmentsStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFulfillmentsStub extends FulfillmentsStub {
   private static final MethodDescriptor<GetFulfillmentRequest, Fulfillment>
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcGeneratorEvaluationsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcGeneratorEvaluationsCallableFactory.java
index 93bdfffc139b..7ba913bc4261 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcGeneratorEvaluationsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcGeneratorEvaluationsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGeneratorEvaluationsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcGeneratorEvaluationsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcGeneratorEvaluationsStub.java
index aeb2272c422b..017f74edcc03 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcGeneratorEvaluationsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcGeneratorEvaluationsStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGeneratorEvaluationsStub extends GeneratorEvaluationsStub {
   private static final MethodDescriptor<CreateGeneratorEvaluationRequest, Operation>
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcGeneratorsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcGeneratorsCallableFactory.java
index 098ab912af61..486505a64a40 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcGeneratorsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcGeneratorsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGeneratorsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcGeneratorsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcGeneratorsStub.java
index 883e83935e94..e44b375095cc 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcGeneratorsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcGeneratorsStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGeneratorsStub extends GeneratorsStub {
   private static final MethodDescriptor<CreateGeneratorRequest, Generator>
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcIntentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcIntentsCallableFactory.java
index f904115355e5..2543125661ee 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcIntentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcIntentsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIntentsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcIntentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcIntentsStub.java
index 05ad013b7052..8474e0a0fa63 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcIntentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcIntentsStub.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIntentsStub extends IntentsStub {
   private static final MethodDescriptor<ListIntentsRequest, ListIntentsResponse>
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcKnowledgeBasesCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcKnowledgeBasesCallableFactory.java
index 16561a004504..1c0a13db3bf8 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcKnowledgeBasesCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcKnowledgeBasesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcKnowledgeBasesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcKnowledgeBasesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcKnowledgeBasesStub.java
index 128a668eab46..c938abf93bcb 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcKnowledgeBasesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcKnowledgeBasesStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcKnowledgeBasesStub extends KnowledgeBasesStub {
   private static final MethodDescriptor<ListKnowledgeBasesRequest, ListKnowledgeBasesResponse>
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcParticipantsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcParticipantsCallableFactory.java
index 5608c78f5bca..9e7dce3aff1c 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcParticipantsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcParticipantsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcParticipantsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcParticipantsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcParticipantsStub.java
index 13d899dd3509..b6404245a35b 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcParticipantsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcParticipantsStub.java
@@ -55,6 +55,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcParticipantsStub extends ParticipantsStub {
   private static final MethodDescriptor<CreateParticipantRequest, Participant>
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSessionEntityTypesCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSessionEntityTypesCallableFactory.java
index 76a2a23b95b2..361a0af3ced4 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSessionEntityTypesCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSessionEntityTypesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSessionEntityTypesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSessionEntityTypesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSessionEntityTypesStub.java
index 1ffe2c5e1f82..e5df146cef22 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSessionEntityTypesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSessionEntityTypesStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSessionEntityTypesStub extends SessionEntityTypesStub {
   private static final MethodDescriptor<
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSessionsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSessionsCallableFactory.java
index e7c916b08a43..fc05a6043ff0 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSessionsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSessionsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSessionsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSessionsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSessionsStub.java
index 36702573e854..160fedbb0cb2 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSessionsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSessionsStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSessionsStub extends SessionsStub {
   private static final MethodDescriptor<DetectIntentRequest, DetectIntentResponse>
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSipTrunksCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSipTrunksCallableFactory.java
index 553975c09f21..de8267b00fd5 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSipTrunksCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSipTrunksCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSipTrunksCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSipTrunksStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSipTrunksStub.java
index 8e97cd0e9897..92103c4630fb 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSipTrunksStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcSipTrunksStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSipTrunksStub extends SipTrunksStub {
   private static final MethodDescriptor<CreateSipTrunkRequest, SipTrunk>
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcToolsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcToolsCallableFactory.java
index 06d932e6450f..f9faef73895b 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcToolsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcToolsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcToolsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcToolsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcToolsStub.java
index af05c78c010b..3ac7973dfef1 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcToolsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcToolsStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcToolsStub extends ToolsStub {
   private static final MethodDescriptor<CreateToolRequest, Tool> createToolMethodDescriptor =
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcVersionsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcVersionsCallableFactory.java
index 1e84306bc1d3..431b3a3d77fd 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcVersionsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcVersionsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVersionsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcVersionsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcVersionsStub.java
index 4af039edad96..29930f96088c 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcVersionsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcVersionsStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVersionsStub extends VersionsStub {
   private static final MethodDescriptor<ListVersionsRequest, ListVersionsResponse>
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonAgentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonAgentsCallableFactory.java
index 5cf2dc45879a..3c761af7dcf5 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonAgentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonAgentsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAgentsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonAgentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonAgentsStub.java
index 6959b47815ae..723c27d3d37f 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonAgentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonAgentsStub.java
@@ -64,6 +64,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAgentsStub extends AgentsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonAnswerRecordsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonAnswerRecordsCallableFactory.java
index 554c4fbb8088..0d3a7a45d848 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonAnswerRecordsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonAnswerRecordsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAnswerRecordsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonAnswerRecordsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonAnswerRecordsStub.java
index 034cbf6d1bcd..27be2f41fb60 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonAnswerRecordsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonAnswerRecordsStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAnswerRecordsStub extends AnswerRecordsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonContextsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonContextsCallableFactory.java
index 6cc0612cbe3a..6fd9e5950492 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonContextsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonContextsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonContextsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonContextsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonContextsStub.java
index 068800c078ba..639fd9ab5f03 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonContextsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonContextsStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonContextsStub extends ContextsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationDatasetsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationDatasetsCallableFactory.java
index d43e05db8d0d..e8e6646004a5 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationDatasetsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationDatasetsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationDatasetsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationDatasetsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationDatasetsStub.java
index e8adc8d5e6c7..5563c9272114 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationDatasetsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationDatasetsStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationDatasetsStub extends ConversationDatasetsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationModelsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationModelsCallableFactory.java
index 530f7970efe7..5214feac47d2 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationModelsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationModelsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationModelsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationModelsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationModelsStub.java
index 0f83b4877603..f26558526316 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationModelsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationModelsStub.java
@@ -69,6 +69,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -76,6 +77,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationModelsStub extends ConversationModelsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationProfilesCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationProfilesCallableFactory.java
index 48f8d268c4f3..412ae42c473f 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationProfilesCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationProfilesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationProfilesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationProfilesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationProfilesStub.java
index a33bf0511c5b..628a6ea52663 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationProfilesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationProfilesStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationProfilesStub extends ConversationProfilesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationsCallableFactory.java
index c3741fffc492..9fd52660a110 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationsStub.java
index 42e6b4ea19c8..b29c3b37c4e9 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonConversationsStub.java
@@ -64,6 +64,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationsStub extends ConversationsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonDocumentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonDocumentsCallableFactory.java
index 091a7e2892d0..611724f12d3d 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonDocumentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonDocumentsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonDocumentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonDocumentsStub.java
index 14040252e63e..7a4947ccfcec 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonDocumentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonDocumentsStub.java
@@ -62,6 +62,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentsStub extends DocumentsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEncryptionSpecServiceCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEncryptionSpecServiceCallableFactory.java
index 1f869fa206e8..1827c1eb7df6 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEncryptionSpecServiceCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEncryptionSpecServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEncryptionSpecServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEncryptionSpecServiceStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEncryptionSpecServiceStub.java
index e5776356c12c..7cd12d961128 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEncryptionSpecServiceStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEncryptionSpecServiceStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEncryptionSpecServiceStub extends EncryptionSpecServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEntityTypesCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEntityTypesCallableFactory.java
index 2e4db24ddd87..2c59aa340e26 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEntityTypesCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEntityTypesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEntityTypesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEntityTypesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEntityTypesStub.java
index 1e0eddde0fa9..4c38d4702d9c 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEntityTypesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEntityTypesStub.java
@@ -64,6 +64,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEntityTypesStub extends EntityTypesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEnvironmentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEnvironmentsCallableFactory.java
index e5b6f4f4d9c3..a548368e0014 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEnvironmentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEnvironmentsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEnvironmentsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEnvironmentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEnvironmentsStub.java
index 1eaf6ad67626..fddaaf3f1789 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEnvironmentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonEnvironmentsStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEnvironmentsStub extends EnvironmentsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonFulfillmentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonFulfillmentsCallableFactory.java
index 7e6c4cf95ac6..44ec0b9f3832 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonFulfillmentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonFulfillmentsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFulfillmentsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonFulfillmentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonFulfillmentsStub.java
index 5a8803d40cad..9067f49d68b6 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonFulfillmentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonFulfillmentsStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFulfillmentsStub extends FulfillmentsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonGeneratorEvaluationsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonGeneratorEvaluationsCallableFactory.java
index 0673f247df37..ace5ea67e5f9 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonGeneratorEvaluationsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonGeneratorEvaluationsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGeneratorEvaluationsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonGeneratorEvaluationsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonGeneratorEvaluationsStub.java
index 221f350daf1b..30dc7de9ef68 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonGeneratorEvaluationsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonGeneratorEvaluationsStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGeneratorEvaluationsStub extends GeneratorEvaluationsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonGeneratorsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonGeneratorsCallableFactory.java
index f14a562cf04b..e8e645362f59 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonGeneratorsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonGeneratorsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGeneratorsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonGeneratorsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonGeneratorsStub.java
index b0b96a3a835b..6978ab77c21a 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonGeneratorsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonGeneratorsStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGeneratorsStub extends GeneratorsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonIntentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonIntentsCallableFactory.java
index c15b5d03074d..7264f6064b2e 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonIntentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonIntentsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIntentsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonIntentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonIntentsStub.java
index a3939a23ef10..02b0e8ab3365 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonIntentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonIntentsStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIntentsStub extends IntentsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonKnowledgeBasesCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonKnowledgeBasesCallableFactory.java
index 3367253667d4..b5684e02191e 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonKnowledgeBasesCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonKnowledgeBasesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonKnowledgeBasesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonKnowledgeBasesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonKnowledgeBasesStub.java
index 2d2829cbb6bb..7fd03213f488 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonKnowledgeBasesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonKnowledgeBasesStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonKnowledgeBasesStub extends KnowledgeBasesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonParticipantsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonParticipantsCallableFactory.java
index 68fe99794dfc..af57df2aa330 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonParticipantsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonParticipantsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonParticipantsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonParticipantsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonParticipantsStub.java
index f63623993a8d..d03a91396e8c 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonParticipantsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonParticipantsStub.java
@@ -62,6 +62,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonParticipantsStub extends ParticipantsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSessionEntityTypesCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSessionEntityTypesCallableFactory.java
index 47fdfbdbf820..6f5b9b6456f3 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSessionEntityTypesCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSessionEntityTypesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionEntityTypesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSessionEntityTypesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSessionEntityTypesStub.java
index 35e6fc5c7f2d..1c04b4a25690 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSessionEntityTypesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSessionEntityTypesStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionEntityTypesStub extends SessionEntityTypesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSessionsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSessionsCallableFactory.java
index ca155bf5d3ea..d8b61af54ff4 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSessionsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSessionsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSessionsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSessionsStub.java
index fff512ebd05b..e4fc983114ae 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSessionsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSessionsStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionsStub extends SessionsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSipTrunksCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSipTrunksCallableFactory.java
index d4b713029fc0..fa4cf48a0103 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSipTrunksCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSipTrunksCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSipTrunksCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSipTrunksStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSipTrunksStub.java
index f105008e443c..24a55474f819 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSipTrunksStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonSipTrunksStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSipTrunksStub extends SipTrunksStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonToolsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonToolsCallableFactory.java
index af0afdaaa9ac..b6509ebd0c67 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonToolsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonToolsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonToolsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonToolsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonToolsStub.java
index 79a94d8850dd..fd4bc8c92e38 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonToolsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonToolsStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonToolsStub extends ToolsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonVersionsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonVersionsCallableFactory.java
index 767ff01b0526..9a81c1021072 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonVersionsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonVersionsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVersionsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonVersionsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonVersionsStub.java
index 59fe04992ad1..b323d3d380b1 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonVersionsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/HttpJsonVersionsStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVersionsStub extends VersionsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/IntentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/IntentsStub.java
index fb5fa274e519..3b95ab9b5844 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/IntentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/IntentsStub.java
@@ -41,6 +41,7 @@
 import com.google.protobuf.Empty;
 import com.google.protobuf.Struct;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class IntentsStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/IntentsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/IntentsStubSettings.java
index b401e4c56f12..c83a17a6cfbb 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/IntentsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/IntentsStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class IntentsStubSettings extends StubSettings<IntentsStubSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/KnowledgeBasesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/KnowledgeBasesStub.java
index 0c00c2485642..e0ddaabb541b 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/KnowledgeBasesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/KnowledgeBasesStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class KnowledgeBasesStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/KnowledgeBasesStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/KnowledgeBasesStubSettings.java
index 9c6606a02f6f..d40109d946cf 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/KnowledgeBasesStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/KnowledgeBasesStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class KnowledgeBasesStubSettings extends StubSettings<KnowledgeBasesStubSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ParticipantsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ParticipantsStub.java
index 25e65970fefa..a6f2430df099 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ParticipantsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ParticipantsStub.java
@@ -45,6 +45,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ParticipantsStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ParticipantsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ParticipantsStubSettings.java
index b0849d85485f..5ebfd021b91a 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ParticipantsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ParticipantsStubSettings.java
@@ -77,6 +77,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -128,6 +129,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ParticipantsStubSettings extends StubSettings<ParticipantsStubSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SessionEntityTypesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SessionEntityTypesStub.java
index a960b5b20f7b..b170fa92ce00 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SessionEntityTypesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SessionEntityTypesStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SessionEntityTypesStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SessionEntityTypesStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SessionEntityTypesStubSettings.java
index 09b1b92844f8..fd663fe018af 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SessionEntityTypesStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SessionEntityTypesStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SessionEntityTypesStubSettings extends StubSettings<SessionEntityTypesStubSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SessionsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SessionsStub.java
index a4a3a400bc86..d8763ff19bbb 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SessionsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SessionsStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SessionsStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SessionsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SessionsStubSettings.java
index 1a1e324d1c16..492a7e6ba982 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SessionsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SessionsStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SessionsStubSettings extends StubSettings<SessionsStubSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SipTrunksStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SipTrunksStub.java
index 4388c955fa2c..989967ea95cb 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SipTrunksStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SipTrunksStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SipTrunksStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SipTrunksStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SipTrunksStubSettings.java
index c6fdb13904f9..3ea0a0973c9b 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SipTrunksStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/SipTrunksStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SipTrunksStubSettings extends StubSettings<SipTrunksStubSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ToolsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ToolsStub.java
index e0ce56bc4484..84b2b892cb42 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ToolsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ToolsStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ToolsStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ToolsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ToolsStubSettings.java
index 1471202e8591..039dadf78448 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ToolsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/ToolsStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ToolsStubSettings extends StubSettings<ToolsStubSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/VersionsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/VersionsStub.java
index 5cb53e7eaac3..a15e4006d8d0 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/VersionsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/VersionsStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class VersionsStub implements BackgroundResource {
 
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/VersionsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/VersionsStubSettings.java
index c97243a33f69..82724de0c216 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/VersionsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/VersionsStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class VersionsStubSettings extends StubSettings<VersionsStubSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/AgentsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/AgentsClient.java
index 53d497339e11..cd31dfb01db9 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/AgentsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/AgentsClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -337,6 +338,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AgentsClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/AgentsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/AgentsSettings.java
index 7a63d127c3df..833960c54aa0 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/AgentsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/AgentsSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AgentsSettings extends ClientSettings<AgentsSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/AnswerRecordsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/AnswerRecordsClient.java
index 0cad54abdc68..9ed3df14d7e6 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/AnswerRecordsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/AnswerRecordsClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -208,6 +209,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AnswerRecordsClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/AnswerRecordsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/AnswerRecordsSettings.java
index 36634c681615..00ac0d2f3bda 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/AnswerRecordsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/AnswerRecordsSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AnswerRecordsSettings extends ClientSettings<AnswerRecordsSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ContextsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ContextsClient.java
index bcbf00c7d973..5a329a9976a2 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ContextsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ContextsClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -270,6 +271,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ContextsClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ContextsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ContextsSettings.java
index a231f3eabf45..062ae5cedb8c 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ContextsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ContextsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ContextsSettings extends ClientSettings<ContextsSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationProfilesClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationProfilesClient.java
index a53df4cb19fd..291da152e7b6 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationProfilesClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationProfilesClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -310,6 +311,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConversationProfilesClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationProfilesSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationProfilesSettings.java
index 3d58b90ebf34..f9800dd0e690 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationProfilesSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationProfilesSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConversationProfilesSettings extends ClientSettings<ConversationProfilesSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationsClient.java
index d925a04ce2e5..798fe8519667 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationsClient.java
@@ -37,6 +37,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -373,6 +374,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConversationsClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationsSettings.java
index aea0b248dfd6..46f16a4360d7 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConversationsSettings extends ClientSettings<ConversationsSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/DocumentsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/DocumentsClient.java
index 42a63a591ebd..374e07e23993 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/DocumentsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/DocumentsClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -310,6 +311,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DocumentsClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/DocumentsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/DocumentsSettings.java
index 947832718422..82e719a5f991 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/DocumentsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/DocumentsSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DocumentsSettings extends ClientSettings<DocumentsSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EncryptionSpecServiceClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EncryptionSpecServiceClient.java
index 7d94d8ba0b12..ec7d8bd8a54a 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EncryptionSpecServiceClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EncryptionSpecServiceClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -199,6 +200,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EncryptionSpecServiceClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EncryptionSpecServiceSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EncryptionSpecServiceSettings.java
index 13227451468e..71d2198ee57f 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EncryptionSpecServiceSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EncryptionSpecServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EncryptionSpecServiceSettings extends ClientSettings<EncryptionSpecServiceSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EntityTypesClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EntityTypesClient.java
index 0d20bb1576c3..042c7453fefd 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EntityTypesClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EntityTypesClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -381,6 +382,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EntityTypesClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EntityTypesSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EntityTypesSettings.java
index 8870e2ca5159..c0fe4e62e8cd 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EntityTypesSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EntityTypesSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EntityTypesSettings extends ClientSettings<EntityTypesSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EnvironmentsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EnvironmentsClient.java
index c5d35af91d63..fb948bdf942f 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EnvironmentsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EnvironmentsClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -249,6 +250,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EnvironmentsClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EnvironmentsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EnvironmentsSettings.java
index cf5ae0982917..b3e0196aa998 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EnvironmentsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/EnvironmentsSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EnvironmentsSettings extends ClientSettings<EnvironmentsSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/FulfillmentsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/FulfillmentsClient.java
index 3e1fa83d2bc2..51fc9a005ea5 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/FulfillmentsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/FulfillmentsClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -190,6 +191,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FulfillmentsClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/FulfillmentsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/FulfillmentsSettings.java
index b2a6ba35fbd7..4fd7ce9db70c 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/FulfillmentsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/FulfillmentsSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FulfillmentsSettings extends ClientSettings<FulfillmentsSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorEvaluationsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorEvaluationsClient.java
index b8edc1bd752e..00206420998d 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorEvaluationsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorEvaluationsClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -241,6 +242,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GeneratorEvaluationsClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorEvaluationsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorEvaluationsSettings.java
index 5b2c21acb630..a2403a97f271 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorEvaluationsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorEvaluationsSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GeneratorEvaluationsSettings extends ClientSettings<GeneratorEvaluationsSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorsClient.java
index 2dbe7b6e8c0d..10bc999835e5 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorsClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -253,6 +254,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GeneratorsClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorsSettings.java
index 9236795b9a24..9469a47c1be0 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GeneratorsSettings extends ClientSettings<GeneratorsSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/IntentsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/IntentsClient.java
index 57715f91f14e..a9b58a4f5119 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/IntentsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/IntentsClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -312,6 +313,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class IntentsClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/IntentsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/IntentsSettings.java
index b199ea5f2d05..6d330cdd89a3 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/IntentsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/IntentsSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class IntentsSettings extends ClientSettings<IntentsSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/KnowledgeBasesClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/KnowledgeBasesClient.java
index ba9dfbbd4959..d26e7a0ffe89 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/KnowledgeBasesClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/KnowledgeBasesClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -259,6 +260,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class KnowledgeBasesClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/KnowledgeBasesSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/KnowledgeBasesSettings.java
index b51c338494b1..ed735cdce405 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/KnowledgeBasesSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/KnowledgeBasesSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class KnowledgeBasesSettings extends ClientSettings<KnowledgeBasesSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsClient.java
index 6f75d04c1e4c..60f4a88e93de 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -383,6 +384,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ParticipantsClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsSettings.java
index 82edf19b6d4f..0a729b66369c 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ParticipantsSettings extends ClientSettings<ParticipantsSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/PhoneNumbersClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/PhoneNumbersClient.java
index 68ec09d61972..572f85facfd1 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/PhoneNumbersClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/PhoneNumbersClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -231,6 +232,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PhoneNumbersClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/PhoneNumbersSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/PhoneNumbersSettings.java
index d8005594bda4..a1da1e840e17 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/PhoneNumbersSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/PhoneNumbersSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PhoneNumbersSettings extends ClientSettings<PhoneNumbersSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionEntityTypesClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionEntityTypesClient.java
index d3504e20d18e..0900650e8b0f 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionEntityTypesClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionEntityTypesClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -263,6 +264,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SessionEntityTypesClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionEntityTypesSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionEntityTypesSettings.java
index c3dc4d4a7300..6251119e6a34 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionEntityTypesSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionEntityTypesSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SessionEntityTypesSettings extends ClientSettings<SessionEntityTypesSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionsClient.java
index 12cc883c309f..5056c42cbdda 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionsClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -189,6 +190,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SessionsClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionsSettings.java
index 761643f006fc..5f07775309f5 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionsSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SessionsSettings extends ClientSettings<SessionsSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SipTrunksClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SipTrunksClient.java
index 4a1e627db526..edc114f32af7 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SipTrunksClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SipTrunksClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -249,6 +250,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SipTrunksClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SipTrunksSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SipTrunksSettings.java
index 1643876a8499..bf9749de3fef 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SipTrunksSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/SipTrunksSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SipTrunksSettings extends ClientSettings<SipTrunksSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ToolsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ToolsClient.java
index c2aa759d225b..4c51b8fc45dc 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ToolsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ToolsClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -250,6 +251,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ToolsClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ToolsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ToolsSettings.java
index 0f4933afaa38..f3807a234aeb 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ToolsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ToolsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ToolsSettings extends ClientSettings<ToolsSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/VersionsClient.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/VersionsClient.java
index e261e584a99c..9d3a0f496a92 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/VersionsClient.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/VersionsClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -250,6 +251,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VersionsClient implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/VersionsSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/VersionsSettings.java
index f726752e363e..869cc8988e6b 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/VersionsSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/VersionsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VersionsSettings extends ClientSettings<VersionsSettings> {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/AgentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/AgentsStub.java
index 0898952db094..b210180dfc24 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/AgentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/AgentsStub.java
@@ -45,6 +45,7 @@
 import com.google.protobuf.Empty;
 import com.google.protobuf.Struct;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AgentsStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/AgentsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/AgentsStubSettings.java
index 8a47d2ed41ad..9a76e14e1819 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/AgentsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/AgentsStubSettings.java
@@ -78,6 +78,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/AnswerRecordsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/AnswerRecordsStub.java
index e744508d1ec1..96cb6b1fc36e 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/AnswerRecordsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/AnswerRecordsStub.java
@@ -32,6 +32,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AnswerRecordsStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/AnswerRecordsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/AnswerRecordsStubSettings.java
index fbe45def25b3..38a4f2760b42 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/AnswerRecordsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/AnswerRecordsStubSettings.java
@@ -63,6 +63,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ContextsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ContextsStub.java
index 7559283d9dc5..38b3879a22e4 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ContextsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ContextsStub.java
@@ -36,6 +36,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ContextsStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ContextsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ContextsStubSettings.java
index 350d40f349da..d7eb3d7ba1d4 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ContextsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ContextsStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ConversationProfilesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ConversationProfilesStub.java
index 9a56539585b2..1143ebb2af61 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ConversationProfilesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ConversationProfilesStub.java
@@ -42,6 +42,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ConversationProfilesStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ConversationProfilesStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ConversationProfilesStubSettings.java
index 78980be2b736..1113be238462 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ConversationProfilesStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ConversationProfilesStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ConversationsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ConversationsStub.java
index 220e58098607..828f7c43bbea 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ConversationsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ConversationsStub.java
@@ -50,6 +50,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ConversationsStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ConversationsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ConversationsStubSettings.java
index 789c0ae9c287..c98885ce9de1 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ConversationsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ConversationsStubSettings.java
@@ -82,6 +82,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -133,6 +134,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/DocumentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/DocumentsStub.java
index 81fa6ee7e308..85e533cd5aa4 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/DocumentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/DocumentsStub.java
@@ -42,6 +42,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DocumentsStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/DocumentsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/DocumentsStubSettings.java
index 135f2e37d858..837368763030 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/DocumentsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/DocumentsStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EncryptionSpecServiceStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EncryptionSpecServiceStub.java
index 660bd2b8a83a..c0745fba4a7b 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EncryptionSpecServiceStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EncryptionSpecServiceStub.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class EncryptionSpecServiceStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EncryptionSpecServiceStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EncryptionSpecServiceStubSettings.java
index 3e0507173a09..141aa35e9992 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EncryptionSpecServiceStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EncryptionSpecServiceStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EntityTypesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EntityTypesStub.java
index 4e8a02309e2f..90ef11e55fac 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EntityTypesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EntityTypesStub.java
@@ -45,6 +45,7 @@
 import com.google.protobuf.Empty;
 import com.google.protobuf.Struct;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class EntityTypesStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EntityTypesStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EntityTypesStubSettings.java
index 94852265f5d1..655e2261c80a 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EntityTypesStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EntityTypesStubSettings.java
@@ -78,6 +78,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EnvironmentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EnvironmentsStub.java
index 331326af8e79..7050a03441d0 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EnvironmentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EnvironmentsStub.java
@@ -38,6 +38,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class EnvironmentsStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EnvironmentsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EnvironmentsStubSettings.java
index cfbadf40062d..dfb32d54acb9 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EnvironmentsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/EnvironmentsStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/FulfillmentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/FulfillmentsStub.java
index 18b308477980..9308de0e47ad 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/FulfillmentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/FulfillmentsStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class FulfillmentsStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/FulfillmentsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/FulfillmentsStubSettings.java
index cc1d2ed227e7..244a804120bb 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/FulfillmentsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/FulfillmentsStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GeneratorEvaluationsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GeneratorEvaluationsStub.java
index c9c89b8082ed..c73178b919da 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GeneratorEvaluationsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GeneratorEvaluationsStub.java
@@ -38,6 +38,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class GeneratorEvaluationsStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GeneratorEvaluationsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GeneratorEvaluationsStubSettings.java
index 54caa757ce6c..b177cef95a86 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GeneratorEvaluationsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GeneratorEvaluationsStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -149,6 +150,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GeneratorsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GeneratorsStub.java
index 8ada655c13b7..b511e64233e5 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GeneratorsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GeneratorsStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class GeneratorsStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GeneratorsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GeneratorsStubSettings.java
index ab7552d6dcc0..6ad966b87422 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GeneratorsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GeneratorsStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcAgentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcAgentsCallableFactory.java
index 763f0b88c36c..dc29dbdb2581 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcAgentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcAgentsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAgentsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcAgentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcAgentsStub.java
index 98e29ffc8291..e48289e8b3d6 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcAgentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcAgentsStub.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAgentsStub extends AgentsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcAnswerRecordsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcAnswerRecordsCallableFactory.java
index f3a83f6df541..2cbec3e7dce4 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcAnswerRecordsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcAnswerRecordsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAnswerRecordsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcAnswerRecordsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcAnswerRecordsStub.java
index 26af644646ea..03dd86afb2fd 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcAnswerRecordsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcAnswerRecordsStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAnswerRecordsStub extends AnswerRecordsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcContextsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcContextsCallableFactory.java
index 22b626c56f0b..2abcbe32755e 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcContextsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcContextsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcContextsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcContextsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcContextsStub.java
index e47b3bb1124f..fdf64de3b5d2 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcContextsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcContextsStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcContextsStub extends ContextsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcConversationProfilesCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcConversationProfilesCallableFactory.java
index abe748e695cc..dfeb9e6a3330 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcConversationProfilesCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcConversationProfilesCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConversationProfilesCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcConversationProfilesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcConversationProfilesStub.java
index 1322bd0cfca9..7e5b802fa9e6 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcConversationProfilesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcConversationProfilesStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConversationProfilesStub extends ConversationProfilesStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcConversationsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcConversationsCallableFactory.java
index bed9f0a30b86..3726aceaf5ec 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcConversationsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcConversationsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConversationsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcConversationsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcConversationsStub.java
index e45e675fd68d..2ac73e77b9bd 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcConversationsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcConversationsStub.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConversationsStub extends ConversationsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcDocumentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcDocumentsCallableFactory.java
index 9bf51f5c8392..0c35cd8bb17b 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcDocumentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcDocumentsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDocumentsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcDocumentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcDocumentsStub.java
index a052c912aaec..20a25fc76e3a 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcDocumentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcDocumentsStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDocumentsStub extends DocumentsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEncryptionSpecServiceCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEncryptionSpecServiceCallableFactory.java
index 25598393a5ec..9015a9e55386 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEncryptionSpecServiceCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEncryptionSpecServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEncryptionSpecServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEncryptionSpecServiceStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEncryptionSpecServiceStub.java
index d9de341b15f7..1bfbe734cc02 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEncryptionSpecServiceStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEncryptionSpecServiceStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEncryptionSpecServiceStub extends EncryptionSpecServiceStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEntityTypesCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEntityTypesCallableFactory.java
index eda012a11c76..1c911f8a835d 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEntityTypesCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEntityTypesCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEntityTypesCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEntityTypesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEntityTypesStub.java
index 465f6c353f4e..4047f3eea46c 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEntityTypesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEntityTypesStub.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEntityTypesStub extends EntityTypesStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEnvironmentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEnvironmentsCallableFactory.java
index 16341adce70c..b58999a73162 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEnvironmentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEnvironmentsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEnvironmentsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEnvironmentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEnvironmentsStub.java
index ff9fe7aa1fd1..a6137b805bc1 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEnvironmentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcEnvironmentsStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEnvironmentsStub extends EnvironmentsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcFulfillmentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcFulfillmentsCallableFactory.java
index 59b6e06fc326..707513e08dd4 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcFulfillmentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcFulfillmentsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFulfillmentsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcFulfillmentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcFulfillmentsStub.java
index 5f03b0bad517..89266cf9fcd5 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcFulfillmentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcFulfillmentsStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFulfillmentsStub extends FulfillmentsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcGeneratorEvaluationsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcGeneratorEvaluationsCallableFactory.java
index 7ecaa723f100..08fe9c9a37a8 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcGeneratorEvaluationsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcGeneratorEvaluationsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGeneratorEvaluationsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcGeneratorEvaluationsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcGeneratorEvaluationsStub.java
index 45e8d2b09225..4339a2d383f9 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcGeneratorEvaluationsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcGeneratorEvaluationsStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGeneratorEvaluationsStub extends GeneratorEvaluationsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcGeneratorsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcGeneratorsCallableFactory.java
index 3f63d7a6099b..bf4e049a7831 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcGeneratorsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcGeneratorsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGeneratorsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcGeneratorsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcGeneratorsStub.java
index 41251121fcc5..22e800d238b0 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcGeneratorsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcGeneratorsStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGeneratorsStub extends GeneratorsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcIntentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcIntentsCallableFactory.java
index ac7a2d6bd99c..b32f6979f3d3 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcIntentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcIntentsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcIntentsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcIntentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcIntentsStub.java
index fb688016857c..f51352958d0d 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcIntentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcIntentsStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcIntentsStub extends IntentsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcKnowledgeBasesCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcKnowledgeBasesCallableFactory.java
index dfb5266fe4c6..90cb0f2a1f3d 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcKnowledgeBasesCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcKnowledgeBasesCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcKnowledgeBasesCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcKnowledgeBasesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcKnowledgeBasesStub.java
index 186d457472eb..1ee55a4e7572 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcKnowledgeBasesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcKnowledgeBasesStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcKnowledgeBasesStub extends KnowledgeBasesStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcParticipantsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcParticipantsCallableFactory.java
index 991a01bb06ad..18fc9a13b83d 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcParticipantsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcParticipantsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcParticipantsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcParticipantsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcParticipantsStub.java
index d8a8ae08ae02..9c2b94d81e74 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcParticipantsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcParticipantsStub.java
@@ -63,6 +63,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcParticipantsStub extends ParticipantsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcPhoneNumbersCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcPhoneNumbersCallableFactory.java
index bfbf1fe099dc..285c20362462 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcPhoneNumbersCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcPhoneNumbersCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPhoneNumbersCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcPhoneNumbersStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcPhoneNumbersStub.java
index e42e8cb4255d..85a6ee58b65f 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcPhoneNumbersStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcPhoneNumbersStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPhoneNumbersStub extends PhoneNumbersStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSessionEntityTypesCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSessionEntityTypesCallableFactory.java
index f43935298f31..5d0dd1e21729 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSessionEntityTypesCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSessionEntityTypesCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSessionEntityTypesCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSessionEntityTypesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSessionEntityTypesStub.java
index fcba1cf0877e..2c33d48a3163 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSessionEntityTypesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSessionEntityTypesStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSessionEntityTypesStub extends SessionEntityTypesStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSessionsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSessionsCallableFactory.java
index ea93f3f844b5..5f68274f02d5 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSessionsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSessionsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSessionsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSessionsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSessionsStub.java
index 372891752250..69acfd822b6e 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSessionsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSessionsStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSessionsStub extends SessionsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSipTrunksCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSipTrunksCallableFactory.java
index ef9b8fb8ee4c..e9c51e300cec 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSipTrunksCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSipTrunksCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSipTrunksCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSipTrunksStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSipTrunksStub.java
index c8bdac1e0c88..1aee7628583b 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSipTrunksStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcSipTrunksStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSipTrunksStub extends SipTrunksStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcToolsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcToolsCallableFactory.java
index ddeb36684fb6..ad0961d1e7ee 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcToolsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcToolsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcToolsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcToolsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcToolsStub.java
index 67d6f525d986..47695ba4d601 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcToolsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcToolsStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcToolsStub extends ToolsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcVersionsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcVersionsCallableFactory.java
index b8bda7cd9ebb..4e52ede28c9b 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcVersionsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcVersionsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVersionsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcVersionsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcVersionsStub.java
index 3663308bd712..289d633ee986 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcVersionsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcVersionsStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVersionsStub extends VersionsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonAgentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonAgentsCallableFactory.java
index c21667ec7c34..2d61c2593567 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonAgentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonAgentsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAgentsCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonAgentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonAgentsStub.java
index f95e5117ffb9..d7c2736ff8ee 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonAgentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonAgentsStub.java
@@ -65,6 +65,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAgentsStub extends AgentsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonAnswerRecordsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonAnswerRecordsCallableFactory.java
index 2a4be8e2b5fe..27dc5a49007f 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonAnswerRecordsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonAnswerRecordsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAnswerRecordsCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonAnswerRecordsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonAnswerRecordsStub.java
index aa8d2db3d609..41a8e41d9ec8 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonAnswerRecordsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonAnswerRecordsStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAnswerRecordsStub extends AnswerRecordsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonContextsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonContextsCallableFactory.java
index 5df4c4db4e79..9f8043ec197d 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonContextsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonContextsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonContextsCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonContextsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonContextsStub.java
index 15dbb8fd3255..fd16923e77ae 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonContextsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonContextsStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonContextsStub extends ContextsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonConversationProfilesCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonConversationProfilesCallableFactory.java
index bc478803de88..e24b4d5e2355 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonConversationProfilesCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonConversationProfilesCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationProfilesCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonConversationProfilesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonConversationProfilesStub.java
index add74a3c1d27..87064aaf0fd0 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonConversationProfilesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonConversationProfilesStub.java
@@ -62,6 +62,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationProfilesStub extends ConversationProfilesStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonConversationsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonConversationsCallableFactory.java
index f8a237154454..3d4614b756ab 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonConversationsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonConversationsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationsCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonConversationsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonConversationsStub.java
index eef8c2eb4d6b..f87c68c6d2af 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonConversationsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonConversationsStub.java
@@ -67,6 +67,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationsStub extends ConversationsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonDocumentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonDocumentsCallableFactory.java
index 4cd083d37e14..311ad4dfe632 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonDocumentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonDocumentsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentsCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonDocumentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonDocumentsStub.java
index 2e849aad9bb9..422645c21754 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonDocumentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonDocumentsStub.java
@@ -62,6 +62,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentsStub extends DocumentsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEncryptionSpecServiceCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEncryptionSpecServiceCallableFactory.java
index 79c2e835ce2f..4ca038744fa1 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEncryptionSpecServiceCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEncryptionSpecServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEncryptionSpecServiceCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEncryptionSpecServiceStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEncryptionSpecServiceStub.java
index 2beb0dd908a8..5aeb27c3858a 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEncryptionSpecServiceStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEncryptionSpecServiceStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEncryptionSpecServiceStub extends EncryptionSpecServiceStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEntityTypesCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEntityTypesCallableFactory.java
index e9a01d3ecfed..1ebd03be7072 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEntityTypesCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEntityTypesCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEntityTypesCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEntityTypesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEntityTypesStub.java
index 7fee5641b562..109a926c586d 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEntityTypesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEntityTypesStub.java
@@ -65,6 +65,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEntityTypesStub extends EntityTypesStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEnvironmentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEnvironmentsCallableFactory.java
index 668d6caccd4b..02eaf0c6cca4 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEnvironmentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEnvironmentsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEnvironmentsCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEnvironmentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEnvironmentsStub.java
index c74357d2b359..aa055f84b6a6 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEnvironmentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonEnvironmentsStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEnvironmentsStub extends EnvironmentsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonFulfillmentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonFulfillmentsCallableFactory.java
index bec6c3cfa454..407815316c65 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonFulfillmentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonFulfillmentsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonFulfillmentsCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonFulfillmentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonFulfillmentsStub.java
index b048507ef2a9..7917a876d456 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonFulfillmentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonFulfillmentsStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonFulfillmentsStub extends FulfillmentsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonGeneratorEvaluationsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonGeneratorEvaluationsCallableFactory.java
index 6676ce93c25c..a2da4b301439 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonGeneratorEvaluationsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonGeneratorEvaluationsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGeneratorEvaluationsCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonGeneratorEvaluationsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonGeneratorEvaluationsStub.java
index cb2b715e82d5..dc6f5272905f 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonGeneratorEvaluationsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonGeneratorEvaluationsStub.java
@@ -58,6 +58,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGeneratorEvaluationsStub extends GeneratorEvaluationsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonGeneratorsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonGeneratorsCallableFactory.java
index 12ee07821d59..f1c2323a9013 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonGeneratorsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonGeneratorsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGeneratorsCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonGeneratorsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonGeneratorsStub.java
index 1f58409b8fc9..6e39759cd1b5 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonGeneratorsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonGeneratorsStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGeneratorsStub extends GeneratorsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonIntentsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonIntentsCallableFactory.java
index 96c35c8a37f0..5872ad204221 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonIntentsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonIntentsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonIntentsCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonIntentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonIntentsStub.java
index 2521dee8ee22..caa9456929ac 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonIntentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonIntentsStub.java
@@ -62,6 +62,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonIntentsStub extends IntentsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonKnowledgeBasesCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonKnowledgeBasesCallableFactory.java
index 9088412ca7bc..9deb3bb4774d 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonKnowledgeBasesCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonKnowledgeBasesCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonKnowledgeBasesCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonKnowledgeBasesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonKnowledgeBasesStub.java
index f75513a09a49..8651e1aa415f 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonKnowledgeBasesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonKnowledgeBasesStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonKnowledgeBasesStub extends KnowledgeBasesStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonParticipantsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonParticipantsCallableFactory.java
index 62423384dba9..b9af15323e44 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonParticipantsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonParticipantsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonParticipantsCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonParticipantsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonParticipantsStub.java
index 5b5fddffec22..a53580974559 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonParticipantsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonParticipantsStub.java
@@ -70,6 +70,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonParticipantsStub extends ParticipantsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonPhoneNumbersCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonPhoneNumbersCallableFactory.java
index 2dfbd1a9b29f..0780d0dff6a4 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonPhoneNumbersCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonPhoneNumbersCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPhoneNumbersCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonPhoneNumbersStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonPhoneNumbersStub.java
index 1f0d91a62bb5..38f334ad04c2 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonPhoneNumbersStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonPhoneNumbersStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPhoneNumbersStub extends PhoneNumbersStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSessionEntityTypesCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSessionEntityTypesCallableFactory.java
index f57d9b0d22b9..d375ca15ebb6 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSessionEntityTypesCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSessionEntityTypesCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionEntityTypesCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSessionEntityTypesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSessionEntityTypesStub.java
index fb2c2bc40baa..c2e43138eb29 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSessionEntityTypesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSessionEntityTypesStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionEntityTypesStub extends SessionEntityTypesStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSessionsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSessionsCallableFactory.java
index 7539b4e02b24..e9c1e29d230b 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSessionsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSessionsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionsCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSessionsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSessionsStub.java
index e396cad355b0..bd9fa654195e 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSessionsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSessionsStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionsStub extends SessionsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSipTrunksCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSipTrunksCallableFactory.java
index b7ca72ca8515..ddb9d35aea58 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSipTrunksCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSipTrunksCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSipTrunksCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSipTrunksStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSipTrunksStub.java
index bfa502b7bea2..16924f762555 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSipTrunksStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonSipTrunksStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSipTrunksStub extends SipTrunksStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonToolsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonToolsCallableFactory.java
index 3a74c9f60fb0..687f3cad48cf 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonToolsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonToolsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonToolsCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonToolsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonToolsStub.java
index fb541d7ace3d..46c8873aa6cf 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonToolsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonToolsStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonToolsStub extends ToolsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonVersionsCallableFactory.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonVersionsCallableFactory.java
index 9121fff27425..f9fd857ed50e 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonVersionsCallableFactory.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonVersionsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonVersionsCallableFactory
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonVersionsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonVersionsStub.java
index 63f780c563cf..6f2ff751f657 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonVersionsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/HttpJsonVersionsStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonVersionsStub extends VersionsStub {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/IntentsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/IntentsStub.java
index 660abd8aea9e..105324d7854f 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/IntentsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/IntentsStub.java
@@ -42,6 +42,7 @@
 import com.google.protobuf.Empty;
 import com.google.protobuf.Struct;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class IntentsStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/IntentsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/IntentsStubSettings.java
index 8bec90a29533..77a115c967ea 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/IntentsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/IntentsStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/KnowledgeBasesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/KnowledgeBasesStub.java
index c55a5c85dc12..cc76d9e9ba3e 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/KnowledgeBasesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/KnowledgeBasesStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class KnowledgeBasesStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/KnowledgeBasesStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/KnowledgeBasesStubSettings.java
index bbeb94e5ce76..fc17dc646b79 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/KnowledgeBasesStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/KnowledgeBasesStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ParticipantsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ParticipantsStub.java
index b2bd7e3870c7..8d4f0ebbc878 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ParticipantsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ParticipantsStub.java
@@ -53,6 +53,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ParticipantsStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ParticipantsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ParticipantsStubSettings.java
index 4e3212cb62bb..44fcfaca5e19 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ParticipantsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ParticipantsStubSettings.java
@@ -85,6 +85,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -136,6 +137,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/PhoneNumbersStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/PhoneNumbersStub.java
index 306de452f8de..d3b7b6ae5496 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/PhoneNumbersStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/PhoneNumbersStub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PhoneNumbersStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/PhoneNumbersStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/PhoneNumbersStubSettings.java
index c09c36e0ddf4..2eaeefa81e95 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/PhoneNumbersStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/PhoneNumbersStubSettings.java
@@ -64,6 +64,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SessionEntityTypesStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SessionEntityTypesStub.java
index ebc48456f284..2ece324e0cd2 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SessionEntityTypesStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SessionEntityTypesStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SessionEntityTypesStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SessionEntityTypesStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SessionEntityTypesStubSettings.java
index 3e2c2f9bcef0..1aaeb7198f0d 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SessionEntityTypesStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SessionEntityTypesStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SessionsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SessionsStub.java
index 413c401bff34..8ea569c80e1a 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SessionsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SessionsStub.java
@@ -31,6 +31,7 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SessionsStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SessionsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SessionsStubSettings.java
index bb63b6a62413..5649eeb1b339 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SessionsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SessionsStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SipTrunksStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SipTrunksStub.java
index 269403bb7407..11434383351a 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SipTrunksStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SipTrunksStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SipTrunksStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SipTrunksStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SipTrunksStubSettings.java
index 56ca23715986..353281c3be05 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SipTrunksStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/SipTrunksStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ToolsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ToolsStub.java
index 0bf493ecf5df..41cd9f58b5a5 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ToolsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ToolsStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ToolsStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ToolsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ToolsStubSettings.java
index 1b337796fa7a..55dd2f1bf7a6 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ToolsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ToolsStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/VersionsStub.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/VersionsStub.java
index 94a91852006a..c2debfc41f55 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/VersionsStub.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/VersionsStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class VersionsStub implements BackgroundResource {
diff --git a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/VersionsStubSettings.java b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/VersionsStubSettings.java
index 625f6a343f2c..46e6ef28e3a0 100644
--- a/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/VersionsStubSettings.java
+++ b/java-dialogflow/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/VersionsStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/AgentName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/AgentName.java
index ea07a68030b5..358552bb84b8 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/AgentName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/AgentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/AnswerRecordName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/AnswerRecordName.java
index 2f11c0b7b371..d8eb18af9138 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/AnswerRecordName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/AnswerRecordName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnswerRecordName implements ResourceName {
   private static final PathTemplate PROJECT_ANSWER_RECORD =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ContextName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ContextName.java
index da2e883a3f1d..684a91d87e0b 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ContextName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ContextName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContextName implements ResourceName {
   private static final PathTemplate PROJECT_SESSION_CONTEXT =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ConversationDatasetName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ConversationDatasetName.java
index d773bce1e440..648e7d405311 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ConversationDatasetName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ConversationDatasetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationDatasetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONVERSATION_DATASET =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ConversationModelEvaluationName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ConversationModelEvaluationName.java
index a3d2a7601826..629279a0845e 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ConversationModelEvaluationName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ConversationModelEvaluationName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationModelEvaluationName implements ResourceName {
   private static final PathTemplate PROJECT_CONVERSATION_MODEL_EVALUATION =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ConversationName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ConversationName.java
index 57aa9d9746fd..073c4c59fedc 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ConversationName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ConversationName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationName implements ResourceName {
   private static final PathTemplate PROJECT_CONVERSATION =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ConversationProfileName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ConversationProfileName.java
index c269806f6de5..b253f3220f00 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ConversationProfileName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ConversationProfileName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationProfileName implements ResourceName {
   private static final PathTemplate PROJECT_CONVERSATION_PROFILE =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/DocumentName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/DocumentName.java
index 58706b3cbf2b..fd4fad707dec 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/DocumentName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/DocumentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentName implements ResourceName {
   private static final PathTemplate PROJECT_KNOWLEDGE_BASE_DOCUMENT =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/EncryptionSpecName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/EncryptionSpecName.java
index f2bc292afa41..f42a247ec456 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/EncryptionSpecName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/EncryptionSpecName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EncryptionSpecName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/EntityTypeName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/EntityTypeName.java
index d2700e50a59a..6c750b6bf13e 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/EntityTypeName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/EntityTypeName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntityTypeName implements ResourceName {
   private static final PathTemplate PROJECT_ENTITY_TYPE =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/EnvironmentName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/EnvironmentName.java
index 3f8e18656c60..ccc6e26708d9 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/EnvironmentName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/EnvironmentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EnvironmentName implements ResourceName {
   private static final PathTemplate PROJECT_ENVIRONMENT =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/FulfillmentName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/FulfillmentName.java
index b09811e03f84..2c058da81a60 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/FulfillmentName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/FulfillmentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FulfillmentName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/GeneratorEvaluationName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/GeneratorEvaluationName.java
index 0a82bbc0ed00..3bdf68a41af0 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/GeneratorEvaluationName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/GeneratorEvaluationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GeneratorEvaluationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GENERATOR_EVALUATION =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/GeneratorName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/GeneratorName.java
index c32ec09e5249..dcdd55cd7308 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/GeneratorName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/GeneratorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GeneratorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GENERATOR =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/IntentName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/IntentName.java
index 6f3f0ff7f2b6..9877ca6e6ae6 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/IntentName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/IntentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IntentName implements ResourceName {
   private static final PathTemplate PROJECT_INTENT =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBaseName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBaseName.java
index de7037ede74b..cd79eb0fe0e4 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBaseName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBaseName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class KnowledgeBaseName implements ResourceName {
   private static final PathTemplate PROJECT_KNOWLEDGE_BASE =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/LocationName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/LocationName.java
index 495b7a742dc2..f88df5bc2210 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/LocationName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/MessageName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/MessageName.java
index fd83a7aeaeca..88467deeb44e 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/MessageName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/MessageName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MessageName implements ResourceName {
   private static final PathTemplate PROJECT_CONVERSATION_MESSAGE =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ParticipantName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ParticipantName.java
index a7b0a2f59b2e..2c1093fae160 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ParticipantName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ParticipantName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ParticipantName implements ResourceName {
   private static final PathTemplate PROJECT_CONVERSATION_PARTICIPANT =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ProjectName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ProjectName.java
index 913a56837d49..a3c3e7cf2b22 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ProjectName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/SessionEntityTypeName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/SessionEntityTypeName.java
index 66428573e6a7..b3e68c07a9af 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/SessionEntityTypeName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/SessionEntityTypeName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionEntityTypeName implements ResourceName {
   private static final PathTemplate PROJECT_SESSION_ENTITY_TYPE =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/SessionName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/SessionName.java
index d0c952e09e7a..04bd008056a2 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/SessionName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/SessionName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionName implements ResourceName {
   private static final PathTemplate PROJECT_SESSION =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/SipTrunkName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/SipTrunkName.java
index c7fe7148a613..e28b9b2f4155 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/SipTrunkName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/SipTrunkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SipTrunkName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SIPTRUNK =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ToolName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ToolName.java
index d6a3ce3b1ecc..dcd45ed8ecd0 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ToolName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ToolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ToolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TOOL =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/VersionName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/VersionName.java
index 1342b55539b8..1654682007d3 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/VersionName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/VersionName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VersionName implements ResourceName {
   private static final PathTemplate PROJECT_VERSION =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AgentName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AgentName.java
index 65e3a36b6536..edf1c2f82a90 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AgentName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AgentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AnswerRecordName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AnswerRecordName.java
index 2e36361dd6ab..e1db15563def 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AnswerRecordName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AnswerRecordName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnswerRecordName implements ResourceName {
   private static final PathTemplate PROJECT_ANSWER_RECORD =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ContextName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ContextName.java
index e46232d4b98b..11d76a6f107b 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ContextName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ContextName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContextName implements ResourceName {
   private static final PathTemplate PROJECT_SESSION_CONTEXT =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationName.java
index b6363cf25121..d388e392603b 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationName implements ResourceName {
   private static final PathTemplate PROJECT_CONVERSATION =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationProfileName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationProfileName.java
index 9b301f520a22..b42ae15ef715 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationProfileName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ConversationProfileName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationProfileName implements ResourceName {
   private static final PathTemplate PROJECT_CONVERSATION_PROFILE =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/DocumentName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/DocumentName.java
index 29bd3839502a..dce6094ef38e 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/DocumentName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/DocumentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentName implements ResourceName {
   private static final PathTemplate PROJECT_KNOWLEDGE_BASE_DOCUMENT =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/EncryptionSpecName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/EncryptionSpecName.java
index 4efa44c6ecaa..99a755f02c35 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/EncryptionSpecName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/EncryptionSpecName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EncryptionSpecName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/EntityTypeName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/EntityTypeName.java
index 196f277d489e..28397e76519f 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/EntityTypeName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/EntityTypeName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntityTypeName implements ResourceName {
   private static final PathTemplate PROJECT_ENTITY_TYPE =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/EnvironmentName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/EnvironmentName.java
index edc1b60306ee..78d7caa710a8 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/EnvironmentName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/EnvironmentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EnvironmentName implements ResourceName {
   private static final PathTemplate PROJECT_ENVIRONMENT =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/FulfillmentName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/FulfillmentName.java
index db285636711b..d47239c45688 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/FulfillmentName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/FulfillmentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FulfillmentName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorEvaluationName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorEvaluationName.java
index a2367e64a90c..e82549214349 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorEvaluationName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorEvaluationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GeneratorEvaluationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GENERATOR_EVALUATION =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorName.java
index 5f1323af27f1..157864b9c806 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/GeneratorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GeneratorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GENERATOR =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/IntentName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/IntentName.java
index 4283f9b063a4..c81ace916f4d 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/IntentName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/IntentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IntentName implements ResourceName {
   private static final PathTemplate PROJECT_INTENT =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/KnowledgeBaseName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/KnowledgeBaseName.java
index 36bad2e9e3d4..8c08d6aa5ec6 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/KnowledgeBaseName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/KnowledgeBaseName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class KnowledgeBaseName implements ResourceName {
   private static final PathTemplate PROJECT_KNOWLEDGE_BASE =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/LocationName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/LocationName.java
index 853152d7c60a..8f28baf477b3 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/LocationName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/MessageName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/MessageName.java
index c41d093dd08d..f365fc8b8afc 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/MessageName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/MessageName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MessageName implements ResourceName {
   private static final PathTemplate PROJECT_CONVERSATION_MESSAGE =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantName.java
index bfcc8470c550..c8abd4d5e974 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ParticipantName implements ResourceName {
   private static final PathTemplate PROJECT_CONVERSATION_PARTICIPANT =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/PhoneNumberName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/PhoneNumberName.java
index 6a97c35d3a38..2ec260c34447 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/PhoneNumberName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/PhoneNumberName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PhoneNumberName implements ResourceName {
   private static final PathTemplate PROJECT_PHONE_NUMBER =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ProjectName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ProjectName.java
index 2b7b48bb4e48..42e5e8cc97d8 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ProjectName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionEntityTypeName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionEntityTypeName.java
index 0750d971e47a..966aeac59e3b 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionEntityTypeName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionEntityTypeName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionEntityTypeName implements ResourceName {
   private static final PathTemplate PROJECT_SESSION_ENTITY_TYPE =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionName.java
index 948bf04e8689..4a4a6f31c7ab 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/SessionName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionName implements ResourceName {
   private static final PathTemplate PROJECT_SESSION =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/SipTrunkName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/SipTrunkName.java
index 014948f32891..f57a736a1a6c 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/SipTrunkName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/SipTrunkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SipTrunkName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SIPTRUNK =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ToolName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ToolName.java
index 52ae6cf8777c..ee73358c3216 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ToolName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ToolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ToolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TOOL =
diff --git a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/VersionName.java b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/VersionName.java
index 1cdbd91572f4..c3c098f2ed47 100644
--- a/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/VersionName.java
+++ b/java-dialogflow/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/VersionName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VersionName implements ResourceName {
   private static final PathTemplate PROJECT_VERSION =
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/AssistantServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/AssistantServiceClient.java
index 10e8d5288024..58d9ecf95fa8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/AssistantServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/AssistantServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -140,6 +141,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AssistantServiceClient implements BackgroundResource {
   private final AssistantServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/AssistantServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/AssistantServiceSettings.java
index 87520f0f93db..148fb9bcdd9e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/AssistantServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/AssistantServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AssistantServiceSettings extends ClientSettings<AssistantServiceSettings> {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/CmekConfigServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/CmekConfigServiceClient.java
index 52eccf4a5c41..ced75008c6e2 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/CmekConfigServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/CmekConfigServiceClient.java
@@ -29,6 +29,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -195,6 +196,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CmekConfigServiceClient implements BackgroundResource {
   private final CmekConfigServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/CmekConfigServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/CmekConfigServiceSettings.java
index d9f0f70e478f..816b174dfe43 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/CmekConfigServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/CmekConfigServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CmekConfigServiceSettings extends ClientSettings<CmekConfigServiceSettings> {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/CompletionServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/CompletionServiceClient.java
index 40a368029a38..900c5c17f722 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/CompletionServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/CompletionServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -201,6 +202,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompletionServiceClient implements BackgroundResource {
   private final CompletionServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/CompletionServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/CompletionServiceSettings.java
index 72e8732ac604..8a1269eaa4b7 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/CompletionServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/CompletionServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompletionServiceSettings extends ClientSettings<CompletionServiceSettings> {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ControlServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ControlServiceClient.java
index 1296827037d1..0bf40fcd7c7c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ControlServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ControlServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -223,6 +224,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ControlServiceClient implements BackgroundResource {
   private final ControlServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ControlServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ControlServiceSettings.java
index b406889d4d36..93539621f6a7 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ControlServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ControlServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ControlServiceSettings extends ClientSettings<ControlServiceSettings> {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ConversationalSearchServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ConversationalSearchServiceClient.java
index 2772b521053c..3a0c2b987e85 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ConversationalSearchServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ConversationalSearchServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -387,6 +388,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationalSearchServiceClient implements BackgroundResource {
   private final ConversationalSearchServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ConversationalSearchServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ConversationalSearchServiceSettings.java
index b40b74ab4db1..6a11ea9f006b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ConversationalSearchServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ConversationalSearchServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationalSearchServiceSettings
     extends ClientSettings<ConversationalSearchServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/DataStoreServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/DataStoreServiceClient.java
index 4729585089f6..66f54759b3b4 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/DataStoreServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/DataStoreServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -227,6 +228,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataStoreServiceClient implements BackgroundResource {
   private final DataStoreServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/DataStoreServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/DataStoreServiceSettings.java
index f4ea536569b9..0b273fb60a48 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/DataStoreServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/DataStoreServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataStoreServiceSettings extends ClientSettings<DataStoreServiceSettings> {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/DocumentServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/DocumentServiceClient.java
index 830cc5925820..63cfadab8b38 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/DocumentServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/DocumentServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -277,6 +278,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentServiceClient implements BackgroundResource {
   private final DocumentServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/DocumentServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/DocumentServiceSettings.java
index dc783e75a0e6..547b0319098a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/DocumentServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/DocumentServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentServiceSettings extends ClientSettings<DocumentServiceSettings> {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/EngineServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/EngineServiceClient.java
index 00b40a6e0e7b..2421f772db30 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/EngineServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/EngineServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -222,6 +223,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EngineServiceClient implements BackgroundResource {
   private final EngineServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/EngineServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/EngineServiceSettings.java
index ace3ff4baadb..c0df7cd44988 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/EngineServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/EngineServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EngineServiceSettings extends ClientSettings<EngineServiceSettings> {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/GroundedGenerationServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/GroundedGenerationServiceClient.java
index 17a527961565..1377969ab4fe 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/GroundedGenerationServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/GroundedGenerationServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -161,6 +162,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GroundedGenerationServiceClient implements BackgroundResource {
   private final GroundedGenerationServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/GroundedGenerationServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/GroundedGenerationServiceSettings.java
index 3c12f647b027..4e81c7ee6d41 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/GroundedGenerationServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/GroundedGenerationServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GroundedGenerationServiceSettings
     extends ClientSettings<GroundedGenerationServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/IdentityMappingStoreServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/IdentityMappingStoreServiceClient.java
index 0d4d4d361c74..c25011efef56 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/IdentityMappingStoreServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/IdentityMappingStoreServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -254,6 +255,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IdentityMappingStoreServiceClient implements BackgroundResource {
   private final IdentityMappingStoreServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/IdentityMappingStoreServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/IdentityMappingStoreServiceSettings.java
index d2c77248bc8e..b641387307a1 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/IdentityMappingStoreServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/IdentityMappingStoreServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IdentityMappingStoreServiceSettings
     extends ClientSettings<IdentityMappingStoreServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ProjectServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ProjectServiceClient.java
index 66a369deeb94..1584968e0cb2 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ProjectServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ProjectServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -135,6 +136,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectServiceClient implements BackgroundResource {
   private final ProjectServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ProjectServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ProjectServiceSettings.java
index 3cef49c25b60..7046e303f59f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ProjectServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ProjectServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectServiceSettings extends ClientSettings<ProjectServiceSettings> {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/RankServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/RankServiceClient.java
index 27cfd9c46b96..0461863a3a49 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/RankServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/RankServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RankServiceClient implements BackgroundResource {
   private final RankServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/RankServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/RankServiceSettings.java
index b8822cbcee31..6ca47c52b5dd 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/RankServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/RankServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RankServiceSettings extends ClientSettings<RankServiceSettings> {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/RecommendationServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/RecommendationServiceClient.java
index 7ae88b0b925e..312792706102 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/RecommendationServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/RecommendationServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -139,6 +140,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RecommendationServiceClient implements BackgroundResource {
   private final RecommendationServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/RecommendationServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/RecommendationServiceSettings.java
index 00c357cc458e..2609290312f8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/RecommendationServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/RecommendationServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RecommendationServiceSettings extends ClientSettings<RecommendationServiceSettings> {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SchemaServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SchemaServiceClient.java
index 5607f7f618f6..749b696e0e2c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SchemaServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SchemaServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -218,6 +219,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SchemaServiceClient implements BackgroundResource {
   private final SchemaServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SchemaServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SchemaServiceSettings.java
index fbd65893f8c2..94d634313703 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SchemaServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SchemaServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SchemaServiceSettings extends ClientSettings<SchemaServiceSettings> {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SearchServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SearchServiceClient.java
index fa1603f1e92b..782fee721dec 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SearchServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SearchServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -194,6 +195,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SearchServiceClient implements BackgroundResource {
   private final SearchServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SearchServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SearchServiceSettings.java
index 4c42f2e881e2..f10bc43606b2 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SearchServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SearchServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SearchServiceSettings extends ClientSettings<SearchServiceSettings> {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SearchTuningServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SearchTuningServiceClient.java
index 1b09914a9152..90664706aed4 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SearchTuningServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SearchTuningServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SearchTuningServiceClient implements BackgroundResource {
   private final SearchTuningServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SearchTuningServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SearchTuningServiceSettings.java
index 3d6a3d39569b..e9894f7373dd 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SearchTuningServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SearchTuningServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SearchTuningServiceSettings extends ClientSettings<SearchTuningServiceSettings> {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ServingConfigServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ServingConfigServiceClient.java
index 37fcf604808d..3b640d28d412 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ServingConfigServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ServingConfigServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -136,6 +137,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServingConfigServiceClient implements BackgroundResource {
   private final ServingConfigServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ServingConfigServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ServingConfigServiceSettings.java
index c0913d756e43..9849eefa639d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ServingConfigServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/ServingConfigServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServingConfigServiceSettings extends ClientSettings<ServingConfigServiceSettings> {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SessionServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SessionServiceClient.java
index 4fa3b3f387f8..9dab73c9e14e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SessionServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SessionServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -218,6 +219,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionServiceClient implements BackgroundResource {
   private final SessionServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SessionServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SessionServiceSettings.java
index ae7f962660ff..e1cb941a1e06 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SessionServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SessionServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionServiceSettings extends ClientSettings<SessionServiceSettings> {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SiteSearchEngineServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SiteSearchEngineServiceClient.java
index 2c36ecf2c3b3..8bb897c7c160 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SiteSearchEngineServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SiteSearchEngineServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -395,6 +396,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SiteSearchEngineServiceClient implements BackgroundResource {
   private final SiteSearchEngineServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SiteSearchEngineServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SiteSearchEngineServiceSettings.java
index c69a236cf988..73a01f0ad568 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SiteSearchEngineServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/SiteSearchEngineServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SiteSearchEngineServiceSettings
     extends ClientSettings<SiteSearchEngineServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/UserEventServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/UserEventServiceClient.java
index 395bd6260bfc..281707299424 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/UserEventServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/UserEventServiceClient.java
@@ -29,6 +29,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -186,6 +187,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserEventServiceClient implements BackgroundResource {
   private final UserEventServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/UserEventServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/UserEventServiceSettings.java
index ed6f29056334..32a7fa06fbc2 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/UserEventServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/UserEventServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserEventServiceSettings extends ClientSettings<UserEventServiceSettings> {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/UserLicenseServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/UserLicenseServiceClient.java
index f59f398ab94e..798027d3d32e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/UserLicenseServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/UserLicenseServiceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -162,6 +163,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserLicenseServiceClient implements BackgroundResource {
   private final UserLicenseServiceSettings settings;
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/UserLicenseServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/UserLicenseServiceSettings.java
index 6b56ab4a6208..e4334c1ec824 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/UserLicenseServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/UserLicenseServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserLicenseServiceSettings extends ClientSettings<UserLicenseServiceSettings> {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/AssistantServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/AssistantServiceStub.java
index e468a8f89749..836d28fce466 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/AssistantServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/AssistantServiceStub.java
@@ -21,6 +21,7 @@
 import com.google.cloud.discoveryengine.v1.StreamAssistRequest;
 import com.google.cloud.discoveryengine.v1.StreamAssistResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AssistantServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/AssistantServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/AssistantServiceStubSettings.java
index 04d4d4fc94a1..0749323abbd2 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/AssistantServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/AssistantServiceStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AssistantServiceStubSettings extends StubSettings<AssistantServiceStubSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/CmekConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/CmekConfigServiceStub.java
index 4c9b7be9eb4f..1b7cf3699736 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/CmekConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/CmekConfigServiceStub.java
@@ -31,6 +31,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CmekConfigServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/CmekConfigServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/CmekConfigServiceStubSettings.java
index d71e294a2af0..31dda6293bef 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/CmekConfigServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/CmekConfigServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CmekConfigServiceStubSettings extends StubSettings<CmekConfigServiceStubSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/CompletionServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/CompletionServiceStub.java
index 02fcc46d35cb..ba02a5e1b49b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/CompletionServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/CompletionServiceStub.java
@@ -36,6 +36,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CompletionServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/CompletionServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/CompletionServiceStubSettings.java
index 3186dfda7bde..210e55fc0e88 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/CompletionServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/CompletionServiceStubSettings.java
@@ -63,6 +63,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -142,6 +143,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CompletionServiceStubSettings extends StubSettings<CompletionServiceStubSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ControlServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ControlServiceStub.java
index 1501ae18fd06..7b0e73d6cd65 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ControlServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ControlServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.discoveryengine.v1.UpdateControlRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ControlServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ControlServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ControlServiceStubSettings.java
index 2e98cd9eb190..3a3ad0655c35 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ControlServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ControlServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ControlServiceStubSettings extends StubSettings<ControlServiceStubSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ConversationalSearchServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ConversationalSearchServiceStub.java
index 1df05c7b18af..6d693f516415 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ConversationalSearchServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ConversationalSearchServiceStub.java
@@ -44,6 +44,7 @@
 import com.google.cloud.discoveryengine.v1.UpdateSessionRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ConversationalSearchServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ConversationalSearchServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ConversationalSearchServiceStubSettings.java
index dd0adabac8ba..ae5dded9270a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ConversationalSearchServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ConversationalSearchServiceStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ConversationalSearchServiceStubSettings
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/DataStoreServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/DataStoreServiceStub.java
index a13efdec9d70..0cbd83a11a97 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/DataStoreServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/DataStoreServiceStub.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataStoreServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/DataStoreServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/DataStoreServiceStubSettings.java
index ce7a35becc8f..57902ad7b5a4 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/DataStoreServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/DataStoreServiceStubSettings.java
@@ -68,6 +68,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataStoreServiceStubSettings extends StubSettings<DataStoreServiceStubSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/DocumentServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/DocumentServiceStub.java
index 1f09ed344f7c..6e440c9d443f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/DocumentServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/DocumentServiceStub.java
@@ -40,6 +40,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DocumentServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/DocumentServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/DocumentServiceStubSettings.java
index ea19777a6eae..7f363faf40f5 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/DocumentServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/DocumentServiceStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DocumentServiceStubSettings extends StubSettings<DocumentServiceStubSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/EngineServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/EngineServiceStub.java
index eca2edfb2f09..7794f07f2a2c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/EngineServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/EngineServiceStub.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EngineServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/EngineServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/EngineServiceStubSettings.java
index 892efa518baf..6497b0349741 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/EngineServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/EngineServiceStubSettings.java
@@ -68,6 +68,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EngineServiceStubSettings extends StubSettings<EngineServiceStubSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GroundedGenerationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GroundedGenerationServiceStub.java
index e70ea7a0e17f..c5ef0a6dfe4f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GroundedGenerationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GroundedGenerationServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.cloud.discoveryengine.v1.GenerateGroundedContentRequest;
 import com.google.cloud.discoveryengine.v1.GenerateGroundedContentResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GroundedGenerationServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GroundedGenerationServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GroundedGenerationServiceStubSettings.java
index 707f8c7540b3..580625422c2c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GroundedGenerationServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GroundedGenerationServiceStubSettings.java
@@ -49,6 +49,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GroundedGenerationServiceStubSettings
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcAssistantServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcAssistantServiceCallableFactory.java
index 63c118d38faf..807f0e9d77d0 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcAssistantServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcAssistantServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAssistantServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcAssistantServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcAssistantServiceStub.java
index 0f72099e1d6f..9d6108cd9311 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcAssistantServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcAssistantServiceStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAssistantServiceStub extends AssistantServiceStub {
   private static final MethodDescriptor<StreamAssistRequest, StreamAssistResponse>
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcCmekConfigServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcCmekConfigServiceCallableFactory.java
index ab5c68030990..9508ef45f51a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcCmekConfigServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcCmekConfigServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCmekConfigServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcCmekConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcCmekConfigServiceStub.java
index 64e22d8ca26d..87b51923e626 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcCmekConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcCmekConfigServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCmekConfigServiceStub extends CmekConfigServiceStub {
   private static final MethodDescriptor<UpdateCmekConfigRequest, Operation>
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcCompletionServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcCompletionServiceCallableFactory.java
index 8f63707f005e..ca804ee1748a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcCompletionServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcCompletionServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCompletionServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcCompletionServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcCompletionServiceStub.java
index 60d639081b41..b2d7d6b63c07 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcCompletionServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcCompletionServiceStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCompletionServiceStub extends CompletionServiceStub {
   private static final MethodDescriptor<CompleteQueryRequest, CompleteQueryResponse>
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcControlServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcControlServiceCallableFactory.java
index 606a95b9c046..8806f62244d7 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcControlServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcControlServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcControlServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcControlServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcControlServiceStub.java
index f381b68b9b1c..666e604b0ceb 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcControlServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcControlServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcControlServiceStub extends ControlServiceStub {
   private static final MethodDescriptor<CreateControlRequest, Control>
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcConversationalSearchServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcConversationalSearchServiceCallableFactory.java
index 963c4bcf27c4..24c35f20d72e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcConversationalSearchServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcConversationalSearchServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConversationalSearchServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcConversationalSearchServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcConversationalSearchServiceStub.java
index afc5d9e324a3..2edf2c128be0 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcConversationalSearchServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcConversationalSearchServiceStub.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConversationalSearchServiceStub extends ConversationalSearchServiceStub {
   private static final MethodDescriptor<ConverseConversationRequest, ConverseConversationResponse>
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcDataStoreServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcDataStoreServiceCallableFactory.java
index 40632dfd092c..bcb2c7d49a25 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcDataStoreServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcDataStoreServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataStoreServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcDataStoreServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcDataStoreServiceStub.java
index 178f73bdb6d8..0b3af6bffd69 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcDataStoreServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcDataStoreServiceStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataStoreServiceStub extends DataStoreServiceStub {
   private static final MethodDescriptor<CreateDataStoreRequest, Operation>
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcDocumentServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcDocumentServiceCallableFactory.java
index 33c2d6371e33..0e5e989d43dd 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcDocumentServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcDocumentServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDocumentServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcDocumentServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcDocumentServiceStub.java
index c567a66519f8..92e6a0362e9d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcDocumentServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcDocumentServiceStub.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDocumentServiceStub extends DocumentServiceStub {
   private static final MethodDescriptor<GetDocumentRequest, Document> getDocumentMethodDescriptor =
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcEngineServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcEngineServiceCallableFactory.java
index 9691c3f63866..d207f6d3805a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcEngineServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcEngineServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEngineServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcEngineServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcEngineServiceStub.java
index 47bdbfcb494f..c37ce7f585da 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcEngineServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcEngineServiceStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEngineServiceStub extends EngineServiceStub {
   private static final MethodDescriptor<CreateEngineRequest, Operation>
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcGroundedGenerationServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcGroundedGenerationServiceCallableFactory.java
index 3825a88b7992..67892e6b7e29 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcGroundedGenerationServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcGroundedGenerationServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGroundedGenerationServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcGroundedGenerationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcGroundedGenerationServiceStub.java
index 516f3972cf63..d3f1c50fd38f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcGroundedGenerationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcGroundedGenerationServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGroundedGenerationServiceStub extends GroundedGenerationServiceStub {
   private static final MethodDescriptor<
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcIdentityMappingStoreServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcIdentityMappingStoreServiceCallableFactory.java
index 93727a3150dd..2747b4972467 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcIdentityMappingStoreServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcIdentityMappingStoreServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIdentityMappingStoreServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcIdentityMappingStoreServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcIdentityMappingStoreServiceStub.java
index d08d7f423bc9..2ee2ffbf283d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcIdentityMappingStoreServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcIdentityMappingStoreServiceStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIdentityMappingStoreServiceStub extends IdentityMappingStoreServiceStub {
   private static final MethodDescriptor<CreateIdentityMappingStoreRequest, IdentityMappingStore>
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcProjectServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcProjectServiceCallableFactory.java
index 60bb2d5c0cfc..04b3bc88a208 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcProjectServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcProjectServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcProjectServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcProjectServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcProjectServiceStub.java
index 6286b58b5053..b76204a093f5 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcProjectServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcProjectServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcProjectServiceStub extends ProjectServiceStub {
   private static final MethodDescriptor<ProvisionProjectRequest, Operation>
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcRankServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcRankServiceCallableFactory.java
index fd762f1012dc..971f19b7acf8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcRankServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcRankServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRankServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcRankServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcRankServiceStub.java
index 0715a0723b9c..3dee234e5f5e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcRankServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcRankServiceStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRankServiceStub extends RankServiceStub {
   private static final MethodDescriptor<RankRequest, RankResponse> rankMethodDescriptor =
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcRecommendationServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcRecommendationServiceCallableFactory.java
index 0fa3611920c1..2a478b82e102 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcRecommendationServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcRecommendationServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRecommendationServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcRecommendationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcRecommendationServiceStub.java
index 09611f0bc78e..e631bdd227d4 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcRecommendationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcRecommendationServiceStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRecommendationServiceStub extends RecommendationServiceStub {
   private static final MethodDescriptor<RecommendRequest, RecommendResponse>
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSchemaServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSchemaServiceCallableFactory.java
index 52496b7e9043..ee58cee37797 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSchemaServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSchemaServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSchemaServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSchemaServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSchemaServiceStub.java
index 36da0c840180..4941fb559dac 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSchemaServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSchemaServiceStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSchemaServiceStub extends SchemaServiceStub {
   private static final MethodDescriptor<GetSchemaRequest, Schema> getSchemaMethodDescriptor =
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSearchServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSearchServiceCallableFactory.java
index 5bebaa16e13a..a12b44d6ce87 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSearchServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSearchServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSearchServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSearchServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSearchServiceStub.java
index 9bb7214a16e4..316aa366085b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSearchServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSearchServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSearchServiceStub extends SearchServiceStub {
   private static final MethodDescriptor<SearchRequest, SearchResponse> searchMethodDescriptor =
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSearchTuningServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSearchTuningServiceCallableFactory.java
index 9fd4e04aecf9..ec0ac09e21a1 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSearchTuningServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSearchTuningServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSearchTuningServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSearchTuningServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSearchTuningServiceStub.java
index 2db1c932fdba..dd624f78b441 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSearchTuningServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSearchTuningServiceStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSearchTuningServiceStub extends SearchTuningServiceStub {
   private static final MethodDescriptor<TrainCustomModelRequest, Operation>
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcServingConfigServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcServingConfigServiceCallableFactory.java
index 57a0ce81e341..774446af8f5d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcServingConfigServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcServingConfigServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServingConfigServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcServingConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcServingConfigServiceStub.java
index 8c7c185ef8fa..fef0fd5090ca 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcServingConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcServingConfigServiceStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServingConfigServiceStub extends ServingConfigServiceStub {
   private static final MethodDescriptor<UpdateServingConfigRequest, ServingConfig>
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSessionServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSessionServiceCallableFactory.java
index b9efa2d1f949..b0acdfc16fc8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSessionServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSessionServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSessionServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSessionServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSessionServiceStub.java
index 43b17ec30cad..f257854dd875 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSessionServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSessionServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSessionServiceStub extends SessionServiceStub {
   private static final MethodDescriptor<CreateSessionRequest, Session>
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSiteSearchEngineServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSiteSearchEngineServiceCallableFactory.java
index ec3fa299494c..cbebae10c414 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSiteSearchEngineServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSiteSearchEngineServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSiteSearchEngineServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSiteSearchEngineServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSiteSearchEngineServiceStub.java
index d138d7c54c76..122a85f28c60 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSiteSearchEngineServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcSiteSearchEngineServiceStub.java
@@ -71,6 +71,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -78,6 +79,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSiteSearchEngineServiceStub extends SiteSearchEngineServiceStub {
   private static final MethodDescriptor<GetSiteSearchEngineRequest, SiteSearchEngine>
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcUserEventServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcUserEventServiceCallableFactory.java
index 44910fecc5d4..27fb80507f84 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcUserEventServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcUserEventServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcUserEventServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcUserEventServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcUserEventServiceStub.java
index b1e968b987d4..15b3a3b810d3 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcUserEventServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcUserEventServiceStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcUserEventServiceStub extends UserEventServiceStub {
   private static final MethodDescriptor<WriteUserEventRequest, UserEvent>
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcUserLicenseServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcUserLicenseServiceCallableFactory.java
index f3248558d473..bbd66ce4f67d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcUserLicenseServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcUserLicenseServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcUserLicenseServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcUserLicenseServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcUserLicenseServiceStub.java
index 473e18bc4fba..644e6accd7dd 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcUserLicenseServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/GrpcUserLicenseServiceStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcUserLicenseServiceStub extends UserLicenseServiceStub {
   private static final MethodDescriptor<ListUserLicensesRequest, ListUserLicensesResponse>
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonAssistantServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonAssistantServiceCallableFactory.java
index 0e913a4be9f0..c54a3d804256 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonAssistantServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonAssistantServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAssistantServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonAssistantServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonAssistantServiceStub.java
index b4b372b8ba1b..157b5b9b4872 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonAssistantServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonAssistantServiceStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAssistantServiceStub extends AssistantServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonCmekConfigServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonCmekConfigServiceCallableFactory.java
index d5498514cdbc..e7a179c6190f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonCmekConfigServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonCmekConfigServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCmekConfigServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonCmekConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonCmekConfigServiceStub.java
index a9fc828ebe5d..2a49e81a96f3 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonCmekConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonCmekConfigServiceStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCmekConfigServiceStub extends CmekConfigServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonCompletionServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonCompletionServiceCallableFactory.java
index 986ea4f806ca..0864fcc36ce9 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonCompletionServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonCompletionServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCompletionServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonCompletionServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonCompletionServiceStub.java
index d858681d4fe3..04bb280a3fbd 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonCompletionServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonCompletionServiceStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCompletionServiceStub extends CompletionServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonControlServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonControlServiceCallableFactory.java
index 3b69a3378baa..13061e826401 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonControlServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonControlServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonControlServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonControlServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonControlServiceStub.java
index 6d267b15875a..4c80852b36ef 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonControlServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonControlServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonControlServiceStub extends ControlServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonConversationalSearchServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonConversationalSearchServiceCallableFactory.java
index 4eb546f51319..016ff979c6dd 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonConversationalSearchServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonConversationalSearchServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationalSearchServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonConversationalSearchServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonConversationalSearchServiceStub.java
index 67eb259e9362..9443c173e214 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonConversationalSearchServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonConversationalSearchServiceStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationalSearchServiceStub extends ConversationalSearchServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonDataStoreServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonDataStoreServiceCallableFactory.java
index bb992f2f545d..a4122fa0ac72 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonDataStoreServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonDataStoreServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataStoreServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonDataStoreServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonDataStoreServiceStub.java
index 24bf0a7b92a8..32adc3e6619e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonDataStoreServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonDataStoreServiceStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataStoreServiceStub extends DataStoreServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonDocumentServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonDocumentServiceCallableFactory.java
index 3d70ff42327e..b9e168e6e6fd 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonDocumentServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonDocumentServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonDocumentServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonDocumentServiceStub.java
index 28fa3d11f4b8..2a8d28189f74 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonDocumentServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonDocumentServiceStub.java
@@ -60,6 +60,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentServiceStub extends DocumentServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonEngineServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonEngineServiceCallableFactory.java
index 04ae7af3b408..6a2f6e103f08 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonEngineServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonEngineServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEngineServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonEngineServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonEngineServiceStub.java
index ead094a92535..52d3d8d88497 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonEngineServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonEngineServiceStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEngineServiceStub extends EngineServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonGroundedGenerationServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonGroundedGenerationServiceCallableFactory.java
index d4365a6876c5..898c94cff0c7 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonGroundedGenerationServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonGroundedGenerationServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGroundedGenerationServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonGroundedGenerationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonGroundedGenerationServiceStub.java
index 3650b5a79b5e..62907a41aa9d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonGroundedGenerationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonGroundedGenerationServiceStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGroundedGenerationServiceStub extends GroundedGenerationServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonIdentityMappingStoreServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonIdentityMappingStoreServiceCallableFactory.java
index a5c349607e4c..fb17c82ed674 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonIdentityMappingStoreServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonIdentityMappingStoreServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIdentityMappingStoreServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonIdentityMappingStoreServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonIdentityMappingStoreServiceStub.java
index 64297702444b..3b45fb678671 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonIdentityMappingStoreServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonIdentityMappingStoreServiceStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIdentityMappingStoreServiceStub extends IdentityMappingStoreServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonProjectServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonProjectServiceCallableFactory.java
index 47f0388ea88f..4fe0079057f8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonProjectServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonProjectServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProjectServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonProjectServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonProjectServiceStub.java
index b77f3a30bcc8..0cbf03634bb9 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonProjectServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonProjectServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProjectServiceStub extends ProjectServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonRankServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonRankServiceCallableFactory.java
index 22c5462fa184..baef2da3a76b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonRankServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonRankServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRankServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonRankServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonRankServiceStub.java
index 5c206e917b1f..7e1fa5c90a32 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonRankServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonRankServiceStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRankServiceStub extends RankServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonRecommendationServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonRecommendationServiceCallableFactory.java
index ffaabf54b1ff..65e9ddcd8c20 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonRecommendationServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonRecommendationServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRecommendationServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonRecommendationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonRecommendationServiceStub.java
index 272d1e926374..da92e08f5a1c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonRecommendationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonRecommendationServiceStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRecommendationServiceStub extends RecommendationServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSchemaServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSchemaServiceCallableFactory.java
index 1f74a8956352..d3570b2f6f45 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSchemaServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSchemaServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSchemaServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSchemaServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSchemaServiceStub.java
index 45b5f376cbbe..7c8918829cc2 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSchemaServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSchemaServiceStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSchemaServiceStub extends SchemaServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSearchServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSearchServiceCallableFactory.java
index 0027c547ef9b..3923437716a8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSearchServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSearchServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSearchServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSearchServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSearchServiceStub.java
index 84d22dc91f09..0c98cefdfc23 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSearchServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSearchServiceStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSearchServiceStub extends SearchServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSearchTuningServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSearchTuningServiceCallableFactory.java
index 8e1fdbf72e77..b5b27e123d98 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSearchTuningServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSearchTuningServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSearchTuningServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSearchTuningServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSearchTuningServiceStub.java
index 142e6264b420..472a2fa3ee68 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSearchTuningServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSearchTuningServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSearchTuningServiceStub extends SearchTuningServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonServingConfigServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonServingConfigServiceCallableFactory.java
index f30566e6e924..25b859902811 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonServingConfigServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonServingConfigServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServingConfigServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonServingConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonServingConfigServiceStub.java
index 8d7e847a05b4..943fe6710962 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonServingConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonServingConfigServiceStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServingConfigServiceStub extends ServingConfigServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSessionServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSessionServiceCallableFactory.java
index 61af9ffdd302..c444f6089b81 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSessionServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSessionServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSessionServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSessionServiceStub.java
index ebfd3535dba7..9260a652e09c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSessionServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSessionServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionServiceStub extends SessionServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSiteSearchEngineServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSiteSearchEngineServiceCallableFactory.java
index 3d8bfc0895f7..91d2e75a5a49 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSiteSearchEngineServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSiteSearchEngineServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSiteSearchEngineServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSiteSearchEngineServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSiteSearchEngineServiceStub.java
index 7cab2ed1fed9..c5ec77d84485 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSiteSearchEngineServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonSiteSearchEngineServiceStub.java
@@ -82,6 +82,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSiteSearchEngineServiceStub extends SiteSearchEngineServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonUserEventServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonUserEventServiceCallableFactory.java
index 7a2a98638914..f2069e0a5e18 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonUserEventServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonUserEventServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonUserEventServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonUserEventServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonUserEventServiceStub.java
index 2f0a34f1310f..27c4340604b7 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonUserEventServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonUserEventServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonUserEventServiceStub extends UserEventServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonUserLicenseServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonUserLicenseServiceCallableFactory.java
index 7348bfabf618..30a88d38ccf2 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonUserLicenseServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonUserLicenseServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonUserLicenseServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonUserLicenseServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonUserLicenseServiceStub.java
index 579c5b83181f..88f323f2cc8d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonUserLicenseServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/HttpJsonUserLicenseServiceStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonUserLicenseServiceStub extends UserLicenseServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/IdentityMappingStoreServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/IdentityMappingStoreServiceStub.java
index dcffd1bc7bb0..e69285218046 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/IdentityMappingStoreServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/IdentityMappingStoreServiceStub.java
@@ -39,6 +39,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class IdentityMappingStoreServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/IdentityMappingStoreServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/IdentityMappingStoreServiceStubSettings.java
index 5170e9ae36af..551473236a9f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/IdentityMappingStoreServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/IdentityMappingStoreServiceStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class IdentityMappingStoreServiceStubSettings
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ProjectServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ProjectServiceStub.java
index 9b54c3d8343e..91b94a794422 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ProjectServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ProjectServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ProjectServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ProjectServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ProjectServiceStubSettings.java
index 9726ea6e8d06..ac2c9aa88861 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ProjectServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ProjectServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -130,6 +131,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ProjectServiceStubSettings extends StubSettings<ProjectServiceStubSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/RankServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/RankServiceStub.java
index 489b0c871f5a..b79a260d9a0a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/RankServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/RankServiceStub.java
@@ -21,6 +21,7 @@
 import com.google.cloud.discoveryengine.v1.RankRequest;
 import com.google.cloud.discoveryengine.v1.RankResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RankServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/RankServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/RankServiceStubSettings.java
index f8b48252ace9..723b1382a42e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/RankServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/RankServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RankServiceStubSettings extends StubSettings<RankServiceStubSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/RecommendationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/RecommendationServiceStub.java
index 8c778f85d128..f3b0497f48e6 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/RecommendationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/RecommendationServiceStub.java
@@ -21,6 +21,7 @@
 import com.google.cloud.discoveryengine.v1.RecommendRequest;
 import com.google.cloud.discoveryengine.v1.RecommendResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RecommendationServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/RecommendationServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/RecommendationServiceStubSettings.java
index bb28ffa9c2bb..4bc48b2d8992 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/RecommendationServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/RecommendationServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RecommendationServiceStubSettings
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SchemaServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SchemaServiceStub.java
index 549d9c966e76..b8f72f1ffc90 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SchemaServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SchemaServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SchemaServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SchemaServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SchemaServiceStubSettings.java
index a8b341786e4a..212203d0599c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SchemaServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SchemaServiceStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SchemaServiceStubSettings extends StubSettings<SchemaServiceStubSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SearchServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SearchServiceStub.java
index a25a6e6c355d..05f862a48bc3 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SearchServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SearchServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.cloud.discoveryengine.v1.SearchRequest;
 import com.google.cloud.discoveryengine.v1.SearchResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SearchServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SearchServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SearchServiceStubSettings.java
index 5e5caa0c919d..24720a85b935 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SearchServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SearchServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SearchServiceStubSettings extends StubSettings<SearchServiceStubSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SearchTuningServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SearchTuningServiceStub.java
index 0bad39ac297e..e864ab0725d5 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SearchTuningServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SearchTuningServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SearchTuningServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SearchTuningServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SearchTuningServiceStubSettings.java
index f92a47fd1c6d..44a97295fafb 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SearchTuningServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SearchTuningServiceStubSettings.java
@@ -54,6 +54,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -133,6 +134,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SearchTuningServiceStubSettings extends StubSettings<SearchTuningServiceStubSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ServingConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ServingConfigServiceStub.java
index 31c9ce15c610..43a6ecd55d95 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ServingConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ServingConfigServiceStub.java
@@ -21,6 +21,7 @@
 import com.google.cloud.discoveryengine.v1.ServingConfig;
 import com.google.cloud.discoveryengine.v1.UpdateServingConfigRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ServingConfigServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ServingConfigServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ServingConfigServiceStubSettings.java
index b6aa912a3829..d24a72cb9e0d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ServingConfigServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/ServingConfigServiceStubSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ServingConfigServiceStubSettings
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SessionServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SessionServiceStub.java
index cebcbe3ab5fe..373b22a49e12 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SessionServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SessionServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.discoveryengine.v1.UpdateSessionRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SessionServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SessionServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SessionServiceStubSettings.java
index 7c9378cb2c7f..e11ffd3e6922 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SessionServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SessionServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SessionServiceStubSettings extends StubSettings<SessionServiceStubSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SiteSearchEngineServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SiteSearchEngineServiceStub.java
index 77c6324d6a9e..ea72f3b440d4 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SiteSearchEngineServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SiteSearchEngineServiceStub.java
@@ -62,6 +62,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SiteSearchEngineServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SiteSearchEngineServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SiteSearchEngineServiceStubSettings.java
index 032c71bebe07..6172b346ddf2 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SiteSearchEngineServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/SiteSearchEngineServiceStubSettings.java
@@ -96,6 +96,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -175,6 +176,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SiteSearchEngineServiceStubSettings
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/UserEventServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/UserEventServiceStub.java
index 4841cb3baf15..38f07817758f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/UserEventServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/UserEventServiceStub.java
@@ -32,6 +32,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class UserEventServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/UserEventServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/UserEventServiceStubSettings.java
index 8be4cb6675aa..d532ff4d43cc 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/UserEventServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/UserEventServiceStubSettings.java
@@ -59,6 +59,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class UserEventServiceStubSettings extends StubSettings<UserEventServiceStubSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/UserLicenseServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/UserLicenseServiceStub.java
index e63c44132420..8fc4e132ee55 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/UserLicenseServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/UserLicenseServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class UserLicenseServiceStub implements BackgroundResource {
 
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/UserLicenseServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/UserLicenseServiceStubSettings.java
index 9df248ee5748..5a6746bf41b2 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/UserLicenseServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1/stub/UserLicenseServiceStubSettings.java
@@ -64,6 +64,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -143,6 +144,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class UserLicenseServiceStubSettings extends StubSettings<UserLicenseServiceStubSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/AclConfigServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/AclConfigServiceClient.java
index 385ce7ebf077..bf4fd8c3376f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/AclConfigServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/AclConfigServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AclConfigServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/AclConfigServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/AclConfigServiceSettings.java
index e9075beb9e89..ce840f7b112f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/AclConfigServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/AclConfigServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AclConfigServiceSettings extends ClientSettings<AclConfigServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ChunkServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ChunkServiceClient.java
index f2ee89d14137..d7bd0c7a4da1 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ChunkServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ChunkServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -159,6 +160,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ChunkServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ChunkServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ChunkServiceSettings.java
index 4a5ae818b9ed..6f0b1dd496c2 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ChunkServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ChunkServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ChunkServiceSettings extends ClientSettings<ChunkServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/CompletionServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/CompletionServiceClient.java
index 31b14ed5abb7..1514580bb5b9 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/CompletionServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/CompletionServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -201,6 +202,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CompletionServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/CompletionServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/CompletionServiceSettings.java
index f8face6fc25a..73361b9c9e20 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/CompletionServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/CompletionServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CompletionServiceSettings extends ClientSettings<CompletionServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ControlServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ControlServiceClient.java
index 8779d62c9602..e624b2e5aacc 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ControlServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ControlServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -224,6 +225,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ControlServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ControlServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ControlServiceSettings.java
index d2fd27a62ff0..60e7c886306b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ControlServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ControlServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ControlServiceSettings extends ClientSettings<ControlServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ConversationalSearchServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ConversationalSearchServiceClient.java
index 55c9ee190781..befe6ee615cf 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ConversationalSearchServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ConversationalSearchServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -376,6 +377,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConversationalSearchServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ConversationalSearchServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ConversationalSearchServiceSettings.java
index 4d3f3f8d6ae0..8786e97a62ee 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ConversationalSearchServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ConversationalSearchServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConversationalSearchServiceSettings
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/DataStoreServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/DataStoreServiceClient.java
index ca3b719dafda..3c8c19b08ddf 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/DataStoreServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/DataStoreServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -264,6 +265,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataStoreServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/DataStoreServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/DataStoreServiceSettings.java
index 9bfa017c0160..693a5fd5a492 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/DataStoreServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/DataStoreServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataStoreServiceSettings extends ClientSettings<DataStoreServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/DocumentServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/DocumentServiceClient.java
index 19d1f9c6bae5..2ba0d6b12d77 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/DocumentServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/DocumentServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -296,6 +297,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DocumentServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/DocumentServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/DocumentServiceSettings.java
index 91ea1b93a413..f424e78cbe6d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/DocumentServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/DocumentServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DocumentServiceSettings extends ClientSettings<DocumentServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EngineServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EngineServiceClient.java
index c32d15ec821a..f74bb22906ad 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EngineServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EngineServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -280,6 +281,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EngineServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EngineServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EngineServiceSettings.java
index 93ec6199695b..3fc50c0e4075 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EngineServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EngineServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EngineServiceSettings extends ClientSettings<EngineServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EstimateBillingServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EstimateBillingServiceClient.java
index 4c46ade93282..a429b3b97b15 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EstimateBillingServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EstimateBillingServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EstimateBillingServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EstimateBillingServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EstimateBillingServiceSettings.java
index bc1c330862dd..1bd6a33bbf30 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EstimateBillingServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EstimateBillingServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EstimateBillingServiceSettings extends ClientSettings<EstimateBillingServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EvaluationServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EvaluationServiceClient.java
index 8b71db551330..59daddb2c6ad 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EvaluationServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EvaluationServiceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -206,6 +207,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EvaluationServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EvaluationServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EvaluationServiceSettings.java
index 87f9916801f4..5de00b433e87 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EvaluationServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/EvaluationServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EvaluationServiceSettings extends ClientSettings<EvaluationServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/GroundedGenerationServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/GroundedGenerationServiceClient.java
index 90e568afcf32..9dade55d943d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/GroundedGenerationServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/GroundedGenerationServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GroundedGenerationServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/GroundedGenerationServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/GroundedGenerationServiceSettings.java
index 8af1e4322ab9..52e6f02e6179 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/GroundedGenerationServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/GroundedGenerationServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GroundedGenerationServiceSettings
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ProjectServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ProjectServiceClient.java
index f6d3923822d1..f2442460ed39 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ProjectServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ProjectServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -178,6 +179,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProjectServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ProjectServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ProjectServiceSettings.java
index 777d6d174518..7998f85a929a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ProjectServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ProjectServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProjectServiceSettings extends ClientSettings<ProjectServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/RankServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/RankServiceClient.java
index f1af478ac199..8d96693d902d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/RankServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/RankServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class RankServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/RankServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/RankServiceSettings.java
index 4a9fcea8d408..c642f13e44ee 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/RankServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/RankServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class RankServiceSettings extends ClientSettings<RankServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/RecommendationServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/RecommendationServiceClient.java
index 7f04e598c201..2ab57cf3b8c4 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/RecommendationServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/RecommendationServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -140,6 +141,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class RecommendationServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/RecommendationServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/RecommendationServiceSettings.java
index 2e8ca5500d12..0e12da86e3aa 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/RecommendationServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/RecommendationServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class RecommendationServiceSettings extends ClientSettings<RecommendationServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQueryServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQueryServiceClient.java
index d8ca436474ba..9377c9ff076b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQueryServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQueryServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -240,6 +241,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SampleQueryServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQueryServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQueryServiceSettings.java
index 6bdb620686b3..87d48e57400f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQueryServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQueryServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SampleQueryServiceSettings extends ClientSettings<SampleQueryServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQuerySetServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQuerySetServiceClient.java
index 8752f67bb2f4..a0f49fed1fd6 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQuerySetServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQuerySetServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -221,6 +222,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SampleQuerySetServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQuerySetServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQuerySetServiceSettings.java
index e55b7175f414..c6b934ec736b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQuerySetServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQuerySetServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SampleQuerySetServiceSettings extends ClientSettings<SampleQuerySetServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SchemaServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SchemaServiceClient.java
index 9d5384f32c23..199400cc4317 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SchemaServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SchemaServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -218,6 +219,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SchemaServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SchemaServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SchemaServiceSettings.java
index 69c64a6dec1e..8452fbbea9a2 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SchemaServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SchemaServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SchemaServiceSettings extends ClientSettings<SchemaServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SearchServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SearchServiceClient.java
index c7d61f04628f..ae6b647cb3f7 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SearchServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SearchServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -176,6 +177,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SearchServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SearchServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SearchServiceSettings.java
index d06f683bbe71..d71fa2a26bef 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SearchServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SearchServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SearchServiceSettings extends ClientSettings<SearchServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SearchTuningServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SearchTuningServiceClient.java
index 91148ab1f617..5a47510b89cb 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SearchTuningServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SearchTuningServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SearchTuningServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SearchTuningServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SearchTuningServiceSettings.java
index aad8f654e848..73638c241921 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SearchTuningServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SearchTuningServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SearchTuningServiceSettings extends ClientSettings<SearchTuningServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ServingConfigServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ServingConfigServiceClient.java
index 1683f0a6253a..b77fda5695d8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ServingConfigServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ServingConfigServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -186,6 +187,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ServingConfigServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ServingConfigServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ServingConfigServiceSettings.java
index f223acb23a88..04c9f24929f9 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ServingConfigServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/ServingConfigServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ServingConfigServiceSettings extends ClientSettings<ServingConfigServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SessionServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SessionServiceClient.java
index 1be4fc080aef..c9939a45bd04 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SessionServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SessionServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -239,6 +240,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SessionServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SessionServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SessionServiceSettings.java
index 00d80d561065..a0ec536348ee 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SessionServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SessionServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SessionServiceSettings extends ClientSettings<SessionServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SiteSearchEngineServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SiteSearchEngineServiceClient.java
index a16e289673e2..daee713dad69 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SiteSearchEngineServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SiteSearchEngineServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -365,6 +366,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SiteSearchEngineServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SiteSearchEngineServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SiteSearchEngineServiceSettings.java
index 591b22708f8f..273aa2c31d0e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SiteSearchEngineServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/SiteSearchEngineServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SiteSearchEngineServiceSettings
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/UserEventServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/UserEventServiceClient.java
index 33b133ffbab5..53fbffeb6a1f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/UserEventServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/UserEventServiceClient.java
@@ -29,6 +29,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -186,6 +187,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class UserEventServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/UserEventServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/UserEventServiceSettings.java
index 881733c9da60..314bff5dd25b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/UserEventServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/UserEventServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class UserEventServiceSettings extends ClientSettings<UserEventServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/AclConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/AclConfigServiceStub.java
index a55371114204..d9123de87a1b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/AclConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/AclConfigServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.cloud.discoveryengine.v1alpha.GetAclConfigRequest;
 import com.google.cloud.discoveryengine.v1alpha.UpdateAclConfigRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AclConfigServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/AclConfigServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/AclConfigServiceStubSettings.java
index 47569c16ec98..4052fc904b90 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/AclConfigServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/AclConfigServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ChunkServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ChunkServiceStub.java
index ee56db4ebf84..156fdd2e34e9 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ChunkServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ChunkServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.cloud.discoveryengine.v1alpha.ListChunksRequest;
 import com.google.cloud.discoveryengine.v1alpha.ListChunksResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ChunkServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ChunkServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ChunkServiceStubSettings.java
index e59d123bd5e3..e08da15dc50a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ChunkServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ChunkServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/CompletionServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/CompletionServiceStub.java
index 4f598fbd526c..ad920a89a5ac 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/CompletionServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/CompletionServiceStub.java
@@ -37,6 +37,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CompletionServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/CompletionServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/CompletionServiceStubSettings.java
index d4fff19f4a31..62c6df18226d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/CompletionServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/CompletionServiceStubSettings.java
@@ -63,6 +63,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -142,6 +143,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ControlServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ControlServiceStub.java
index 25a4e5233b8d..03dc300c99ae 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ControlServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ControlServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.discoveryengine.v1alpha.UpdateControlRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ControlServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ControlServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ControlServiceStubSettings.java
index 04764cd17b85..49db32cb50df 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ControlServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ControlServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ConversationalSearchServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ConversationalSearchServiceStub.java
index 735a6126deee..3732beeff156 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ConversationalSearchServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ConversationalSearchServiceStub.java
@@ -44,6 +44,7 @@
 import com.google.cloud.discoveryengine.v1alpha.UpdateSessionRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ConversationalSearchServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ConversationalSearchServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ConversationalSearchServiceStubSettings.java
index 4623c14f5eb8..0d4ec1bdd084 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ConversationalSearchServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ConversationalSearchServiceStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -128,6 +129,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/DataStoreServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/DataStoreServiceStub.java
index e8a45f0049c7..808fda8e8395 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/DataStoreServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/DataStoreServiceStub.java
@@ -38,6 +38,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DataStoreServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/DataStoreServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/DataStoreServiceStubSettings.java
index d707404d1a5a..f01dfeddfc25 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/DataStoreServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/DataStoreServiceStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -149,6 +150,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/DocumentServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/DocumentServiceStub.java
index 41c44f965395..df99b7405bfa 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/DocumentServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/DocumentServiceStub.java
@@ -43,6 +43,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DocumentServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/DocumentServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/DocumentServiceStubSettings.java
index b7f750f3a751..ec8f014bd9a0 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/DocumentServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/DocumentServiceStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EngineServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EngineServiceStub.java
index 8f3cfec4e213..970b82372d8c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EngineServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EngineServiceStub.java
@@ -40,6 +40,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class EngineServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EngineServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EngineServiceStubSettings.java
index 1778fe925c73..959808cd67a3 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EngineServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EngineServiceStubSettings.java
@@ -73,6 +73,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EstimateBillingServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EstimateBillingServiceStub.java
index a6292ea4c605..526e1baff96f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EstimateBillingServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EstimateBillingServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class EstimateBillingServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EstimateBillingServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EstimateBillingServiceStubSettings.java
index 1a69a4292547..d209b4fc76fd 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EstimateBillingServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EstimateBillingServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EvaluationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EvaluationServiceStub.java
index 3f3d5a108813..7dde64bd3b7c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EvaluationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EvaluationServiceStub.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class EvaluationServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EvaluationServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EvaluationServiceStubSettings.java
index 3fc0c5a7e103..35dceaaec806 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EvaluationServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/EvaluationServiceStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GroundedGenerationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GroundedGenerationServiceStub.java
index 0a8e5a684f13..b18c776edbc1 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GroundedGenerationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GroundedGenerationServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.discoveryengine.v1alpha.CheckGroundingRequest;
 import com.google.cloud.discoveryengine.v1alpha.CheckGroundingResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class GroundedGenerationServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GroundedGenerationServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GroundedGenerationServiceStubSettings.java
index b549d2aa8756..58a555ced33a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GroundedGenerationServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GroundedGenerationServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcAclConfigServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcAclConfigServiceCallableFactory.java
index 4deabf4aa4f4..5644b2de7ff4 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcAclConfigServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcAclConfigServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAclConfigServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcAclConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcAclConfigServiceStub.java
index bf0ffb4cb541..58b3191b01da 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcAclConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcAclConfigServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAclConfigServiceStub extends AclConfigServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcChunkServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcChunkServiceCallableFactory.java
index 5f5cffea2627..820162d85a09 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcChunkServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcChunkServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcChunkServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcChunkServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcChunkServiceStub.java
index c64d1d33fb51..9544d9963da9 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcChunkServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcChunkServiceStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcChunkServiceStub extends ChunkServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcCompletionServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcCompletionServiceCallableFactory.java
index 07cb9ec28afd..290e9a362089 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcCompletionServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcCompletionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCompletionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcCompletionServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcCompletionServiceStub.java
index 593e52b6a8d2..756f0cf7cf05 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcCompletionServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcCompletionServiceStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCompletionServiceStub extends CompletionServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcControlServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcControlServiceCallableFactory.java
index 229b7757d038..9729767bdaf3 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcControlServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcControlServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcControlServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcControlServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcControlServiceStub.java
index 956b92b7df7e..a86c8fad657f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcControlServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcControlServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcControlServiceStub extends ControlServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcConversationalSearchServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcConversationalSearchServiceCallableFactory.java
index 40dff8272104..1f702664d0da 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcConversationalSearchServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcConversationalSearchServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConversationalSearchServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcConversationalSearchServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcConversationalSearchServiceStub.java
index a5721e57ab6b..6b124b6e7d70 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcConversationalSearchServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcConversationalSearchServiceStub.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConversationalSearchServiceStub extends ConversationalSearchServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcDataStoreServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcDataStoreServiceCallableFactory.java
index 8860e06a91b4..266aac061d23 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcDataStoreServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcDataStoreServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataStoreServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcDataStoreServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcDataStoreServiceStub.java
index 30b1e3f1a990..965e662fa33b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcDataStoreServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcDataStoreServiceStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataStoreServiceStub extends DataStoreServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcDocumentServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcDocumentServiceCallableFactory.java
index 54c16f56e417..b715787ad419 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcDocumentServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcDocumentServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDocumentServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcDocumentServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcDocumentServiceStub.java
index 36a19c5a19ee..063462f11276 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcDocumentServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcDocumentServiceStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDocumentServiceStub extends DocumentServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEngineServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEngineServiceCallableFactory.java
index 8254b1db42f1..65ff25cbe54e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEngineServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEngineServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEngineServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEngineServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEngineServiceStub.java
index 7a8abdbb9a6f..1c5f84a18bf6 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEngineServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEngineServiceStub.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEngineServiceStub extends EngineServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEstimateBillingServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEstimateBillingServiceCallableFactory.java
index 9a7c268d9b4d..02145b2138e5 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEstimateBillingServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEstimateBillingServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEstimateBillingServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEstimateBillingServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEstimateBillingServiceStub.java
index 530535e23b8c..944f856bd4b7 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEstimateBillingServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEstimateBillingServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEstimateBillingServiceStub extends EstimateBillingServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEvaluationServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEvaluationServiceCallableFactory.java
index 603e62310acf..c083023ff4ee 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEvaluationServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEvaluationServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEvaluationServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEvaluationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEvaluationServiceStub.java
index de5947fc11bc..b13fdc1c3cfd 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEvaluationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcEvaluationServiceStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEvaluationServiceStub extends EvaluationServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcGroundedGenerationServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcGroundedGenerationServiceCallableFactory.java
index ece7849f6c58..10afd9b9aed4 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcGroundedGenerationServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcGroundedGenerationServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGroundedGenerationServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcGroundedGenerationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcGroundedGenerationServiceStub.java
index bd3c36a4e73e..d3651112956d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcGroundedGenerationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcGroundedGenerationServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGroundedGenerationServiceStub extends GroundedGenerationServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcProjectServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcProjectServiceCallableFactory.java
index d4965c6059d3..406e2d1b578d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcProjectServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcProjectServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProjectServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcProjectServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcProjectServiceStub.java
index 04e74dc77b05..4951038f62a3 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcProjectServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcProjectServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProjectServiceStub extends ProjectServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcRankServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcRankServiceCallableFactory.java
index 3e09c3ce2a79..0e5fcaf374ee 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcRankServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcRankServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcRankServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcRankServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcRankServiceStub.java
index 136a6515cecc..45a9c1c4bf22 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcRankServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcRankServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcRankServiceStub extends RankServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcRecommendationServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcRecommendationServiceCallableFactory.java
index 99848ea6753c..430288de398d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcRecommendationServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcRecommendationServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcRecommendationServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcRecommendationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcRecommendationServiceStub.java
index d1dded6e2623..cbfac73855c1 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcRecommendationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcRecommendationServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcRecommendationServiceStub extends RecommendationServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSampleQueryServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSampleQueryServiceCallableFactory.java
index a931f4f787d9..0c1863109226 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSampleQueryServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSampleQueryServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSampleQueryServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSampleQueryServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSampleQueryServiceStub.java
index 5af273f50b7b..02022a2d6e20 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSampleQueryServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSampleQueryServiceStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSampleQueryServiceStub extends SampleQueryServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSampleQuerySetServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSampleQuerySetServiceCallableFactory.java
index 80a0d7a8e49b..9460a761ded4 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSampleQuerySetServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSampleQuerySetServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSampleQuerySetServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSampleQuerySetServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSampleQuerySetServiceStub.java
index cea1328fe22f..6289a1e51dd8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSampleQuerySetServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSampleQuerySetServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSampleQuerySetServiceStub extends SampleQuerySetServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSchemaServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSchemaServiceCallableFactory.java
index 84f1493170a0..9608b1822603 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSchemaServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSchemaServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSchemaServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSchemaServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSchemaServiceStub.java
index 3c302b82c15a..c75e4922eee3 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSchemaServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSchemaServiceStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSchemaServiceStub extends SchemaServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSearchServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSearchServiceCallableFactory.java
index af062b1b3dc9..cfc024e501a5 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSearchServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSearchServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSearchServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSearchServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSearchServiceStub.java
index db14b9882da1..7d1c7863b775 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSearchServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSearchServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSearchServiceStub extends SearchServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSearchTuningServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSearchTuningServiceCallableFactory.java
index 40178145a624..8ea8373fe2dd 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSearchTuningServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSearchTuningServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSearchTuningServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSearchTuningServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSearchTuningServiceStub.java
index 9f8a49108964..284cae3a675e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSearchTuningServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSearchTuningServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSearchTuningServiceStub extends SearchTuningServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcServingConfigServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcServingConfigServiceCallableFactory.java
index b782ab0e0fde..6b21d8e102fe 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcServingConfigServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcServingConfigServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcServingConfigServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcServingConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcServingConfigServiceStub.java
index 569ba7593cf2..6ca15a8b0a99 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcServingConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcServingConfigServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcServingConfigServiceStub extends ServingConfigServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSessionServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSessionServiceCallableFactory.java
index 9950d9913165..006fbd8eb36d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSessionServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSessionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSessionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSessionServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSessionServiceStub.java
index cf483914ba83..2f24878f50b7 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSessionServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSessionServiceStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSessionServiceStub extends SessionServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSiteSearchEngineServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSiteSearchEngineServiceCallableFactory.java
index a2db5fc209eb..6ed3b327f029 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSiteSearchEngineServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSiteSearchEngineServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSiteSearchEngineServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSiteSearchEngineServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSiteSearchEngineServiceStub.java
index 1b1c645c59dc..a5865f9dec60 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSiteSearchEngineServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcSiteSearchEngineServiceStub.java
@@ -70,6 +70,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSiteSearchEngineServiceStub extends SiteSearchEngineServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcUserEventServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcUserEventServiceCallableFactory.java
index 77bdb09005e4..e9805bb2d05d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcUserEventServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcUserEventServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcUserEventServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcUserEventServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcUserEventServiceStub.java
index eb1a941791a2..44f941a4ae63 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcUserEventServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/GrpcUserEventServiceStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcUserEventServiceStub extends UserEventServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonAclConfigServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonAclConfigServiceCallableFactory.java
index bdeab0ab2a0f..ab822cbd9191 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonAclConfigServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonAclConfigServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAclConfigServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonAclConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonAclConfigServiceStub.java
index cfb6daae3f0c..776c5e73a775 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonAclConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonAclConfigServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAclConfigServiceStub extends AclConfigServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonChunkServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonChunkServiceCallableFactory.java
index 021b2ba178c6..7d7b466c01c8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonChunkServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonChunkServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonChunkServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonChunkServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonChunkServiceStub.java
index 7216f3580d10..b1eaf898a705 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonChunkServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonChunkServiceStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonChunkServiceStub extends ChunkServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonCompletionServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonCompletionServiceCallableFactory.java
index db52067a4e18..826f5830358f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonCompletionServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonCompletionServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCompletionServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonCompletionServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonCompletionServiceStub.java
index eb5b81659b72..fe39cfb44928 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonCompletionServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonCompletionServiceStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCompletionServiceStub extends CompletionServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonControlServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonControlServiceCallableFactory.java
index 205884c2d554..5bbf2e2be1da 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonControlServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonControlServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonControlServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonControlServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonControlServiceStub.java
index 44789fa1f750..b81be4925b70 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonControlServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonControlServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonControlServiceStub extends ControlServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonConversationalSearchServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonConversationalSearchServiceCallableFactory.java
index 08646774f409..95abb3418f2c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonConversationalSearchServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonConversationalSearchServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationalSearchServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonConversationalSearchServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonConversationalSearchServiceStub.java
index 51a89ebdc822..357681390568 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonConversationalSearchServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonConversationalSearchServiceStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationalSearchServiceStub extends ConversationalSearchServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonDataStoreServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonDataStoreServiceCallableFactory.java
index eae02348a775..a1bd9c1fa9db 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonDataStoreServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonDataStoreServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataStoreServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonDataStoreServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonDataStoreServiceStub.java
index 2ee6088178be..b84bdc91d412 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonDataStoreServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonDataStoreServiceStub.java
@@ -58,6 +58,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataStoreServiceStub extends DataStoreServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonDocumentServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonDocumentServiceCallableFactory.java
index 5ec00fa2fbb3..e8f7876aba2b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonDocumentServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonDocumentServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonDocumentServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonDocumentServiceStub.java
index 3443a7673786..1eb0dc8d0f91 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonDocumentServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonDocumentServiceStub.java
@@ -63,6 +63,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentServiceStub extends DocumentServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEngineServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEngineServiceCallableFactory.java
index 298fad310849..a761508b378d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEngineServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEngineServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEngineServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEngineServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEngineServiceStub.java
index 498ad9c4c331..ae95df1d624d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEngineServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEngineServiceStub.java
@@ -60,6 +60,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEngineServiceStub extends EngineServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEstimateBillingServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEstimateBillingServiceCallableFactory.java
index fbc0aeb6c8bf..d2ceb52acf7b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEstimateBillingServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEstimateBillingServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEstimateBillingServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEstimateBillingServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEstimateBillingServiceStub.java
index 66e77bc31e15..ae4b230418d8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEstimateBillingServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEstimateBillingServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEstimateBillingServiceStub extends EstimateBillingServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEvaluationServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEvaluationServiceCallableFactory.java
index 400e530534df..c85c8de72983 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEvaluationServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEvaluationServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEvaluationServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEvaluationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEvaluationServiceStub.java
index d4620d158627..998309b4e977 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEvaluationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonEvaluationServiceStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEvaluationServiceStub extends EvaluationServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonGroundedGenerationServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonGroundedGenerationServiceCallableFactory.java
index b578f633520d..e2165cc6d2d4 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonGroundedGenerationServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonGroundedGenerationServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGroundedGenerationServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonGroundedGenerationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonGroundedGenerationServiceStub.java
index 06aef1522a49..ce31c634e443 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonGroundedGenerationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonGroundedGenerationServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGroundedGenerationServiceStub extends GroundedGenerationServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonProjectServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonProjectServiceCallableFactory.java
index eb25f86a16b9..5ce314ea65fc 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonProjectServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonProjectServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProjectServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonProjectServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonProjectServiceStub.java
index 0cc99e863f58..3937bc237052 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonProjectServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonProjectServiceStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProjectServiceStub extends ProjectServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonRankServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonRankServiceCallableFactory.java
index facef8db9e02..a39ef3ea6fd8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonRankServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonRankServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonRankServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonRankServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonRankServiceStub.java
index 61140de9713d..d2f676b8bf2c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonRankServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonRankServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonRankServiceStub extends RankServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonRecommendationServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonRecommendationServiceCallableFactory.java
index e4f0491837e7..ee5ea38e0e2d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonRecommendationServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonRecommendationServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonRecommendationServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonRecommendationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonRecommendationServiceStub.java
index 0c64b4ab18fa..49a3b26d3b60 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonRecommendationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonRecommendationServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonRecommendationServiceStub extends RecommendationServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSampleQueryServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSampleQueryServiceCallableFactory.java
index 0b50fff29118..2a58ed728889 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSampleQueryServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSampleQueryServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSampleQueryServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSampleQueryServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSampleQueryServiceStub.java
index ca6570674229..c078305b4661 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSampleQueryServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSampleQueryServiceStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSampleQueryServiceStub extends SampleQueryServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSampleQuerySetServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSampleQuerySetServiceCallableFactory.java
index ce04f6cde9b3..b09c301b1f50 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSampleQuerySetServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSampleQuerySetServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSampleQuerySetServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSampleQuerySetServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSampleQuerySetServiceStub.java
index 2ed4840de751..f9e2568954fb 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSampleQuerySetServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSampleQuerySetServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSampleQuerySetServiceStub extends SampleQuerySetServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSchemaServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSchemaServiceCallableFactory.java
index 730233c9fd0f..7be2af018a50 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSchemaServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSchemaServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSchemaServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSchemaServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSchemaServiceStub.java
index 24b966a8808a..fec5485ffaae 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSchemaServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSchemaServiceStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSchemaServiceStub extends SchemaServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSearchServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSearchServiceCallableFactory.java
index d6be29e801af..a48ac212dd1e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSearchServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSearchServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSearchServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSearchServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSearchServiceStub.java
index 70c3df37643a..09b8da3d9760 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSearchServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSearchServiceStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSearchServiceStub extends SearchServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSearchTuningServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSearchTuningServiceCallableFactory.java
index ee017e3ada4e..2f1d7743bee0 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSearchTuningServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSearchTuningServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSearchTuningServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSearchTuningServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSearchTuningServiceStub.java
index 9d015bdc8c9b..afcd9aa68f66 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSearchTuningServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSearchTuningServiceStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSearchTuningServiceStub extends SearchTuningServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonServingConfigServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonServingConfigServiceCallableFactory.java
index 841befdbf65f..07fcad3ce640 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonServingConfigServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonServingConfigServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonServingConfigServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonServingConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonServingConfigServiceStub.java
index bb33307c5b4d..4fa81ccf41e6 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonServingConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonServingConfigServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonServingConfigServiceStub extends ServingConfigServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSessionServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSessionServiceCallableFactory.java
index 1c6b864b64a9..21b7d2b92ff7 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSessionServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSessionServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSessionServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSessionServiceStub.java
index 6355b3613572..16ca479d8ed5 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSessionServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSessionServiceStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionServiceStub extends SessionServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSiteSearchEngineServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSiteSearchEngineServiceCallableFactory.java
index 055162c2cf00..137331c6473a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSiteSearchEngineServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSiteSearchEngineServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSiteSearchEngineServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSiteSearchEngineServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSiteSearchEngineServiceStub.java
index 558bc664b6a4..33cfa6ef6787 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSiteSearchEngineServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonSiteSearchEngineServiceStub.java
@@ -81,6 +81,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSiteSearchEngineServiceStub extends SiteSearchEngineServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonUserEventServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonUserEventServiceCallableFactory.java
index ec3e1fa4026b..ba74198e58fb 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonUserEventServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonUserEventServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonUserEventServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonUserEventServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonUserEventServiceStub.java
index 64e6bb015f64..d56d59d12952 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonUserEventServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/HttpJsonUserEventServiceStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonUserEventServiceStub extends UserEventServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ProjectServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ProjectServiceStub.java
index 9c4e1f6c920c..6c413b12dda6 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ProjectServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ProjectServiceStub.java
@@ -28,6 +28,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ProjectServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ProjectServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ProjectServiceStubSettings.java
index 9780050d17d6..1e19c942e594 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ProjectServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ProjectServiceStubSettings.java
@@ -54,6 +54,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/RankServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/RankServiceStub.java
index 770abfd1355a..5e036fd172c0 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/RankServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/RankServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.discoveryengine.v1alpha.RankRequest;
 import com.google.cloud.discoveryengine.v1alpha.RankResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class RankServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/RankServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/RankServiceStubSettings.java
index 03d9eac4e793..cf804b57e3b3 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/RankServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/RankServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/RecommendationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/RecommendationServiceStub.java
index 99d2d33a00d1..73e6752ec69b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/RecommendationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/RecommendationServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.discoveryengine.v1alpha.RecommendRequest;
 import com.google.cloud.discoveryengine.v1alpha.RecommendResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class RecommendationServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/RecommendationServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/RecommendationServiceStubSettings.java
index 499e5b733c5b..3a8d35451318 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/RecommendationServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/RecommendationServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SampleQueryServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SampleQueryServiceStub.java
index fb1d9af5d754..aeadb8e9ac64 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SampleQueryServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SampleQueryServiceStub.java
@@ -36,6 +36,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SampleQueryServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SampleQueryServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SampleQueryServiceStubSettings.java
index 1655d7c2e44b..a97c1eecfe5a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SampleQueryServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SampleQueryServiceStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SampleQuerySetServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SampleQuerySetServiceStub.java
index b10d2c4f3c69..b7cd6a951235 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SampleQuerySetServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SampleQuerySetServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.discoveryengine.v1alpha.UpdateSampleQuerySetRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SampleQuerySetServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SampleQuerySetServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SampleQuerySetServiceStubSettings.java
index 6cbbe8729a5c..d16d222e10fa 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SampleQuerySetServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SampleQuerySetServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SchemaServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SchemaServiceStub.java
index b777a13e1778..ca52fa044219 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SchemaServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SchemaServiceStub.java
@@ -36,6 +36,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SchemaServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SchemaServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SchemaServiceStubSettings.java
index 77fdb76ef22e..61101e8c064b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SchemaServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SchemaServiceStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SearchServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SearchServiceStub.java
index b97f8b8d929e..1158d19ef3a3 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SearchServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SearchServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.cloud.discoveryengine.v1alpha.SearchRequest;
 import com.google.cloud.discoveryengine.v1alpha.SearchResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SearchServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SearchServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SearchServiceStubSettings.java
index bd95aa32dc8d..5b87c41bc2d8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SearchServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SearchServiceStubSettings.java
@@ -55,6 +55,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SearchTuningServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SearchTuningServiceStub.java
index e703ea16576f..ffc3c0905ea0 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SearchTuningServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SearchTuningServiceStub.java
@@ -28,6 +28,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SearchTuningServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SearchTuningServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SearchTuningServiceStubSettings.java
index 948f17a57e56..51b15c0ebd99 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SearchTuningServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SearchTuningServiceStubSettings.java
@@ -54,6 +54,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -133,6 +134,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ServingConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ServingConfigServiceStub.java
index cf6762832f41..dcec71d33763 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ServingConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ServingConfigServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.cloud.discoveryengine.v1alpha.ServingConfig;
 import com.google.cloud.discoveryengine.v1alpha.UpdateServingConfigRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ServingConfigServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ServingConfigServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ServingConfigServiceStubSettings.java
index f3a8bf556f33..f3f8ca481111 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ServingConfigServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/ServingConfigServiceStubSettings.java
@@ -57,6 +57,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SessionServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SessionServiceStub.java
index 879d3733aa2e..3d9e1ea404c2 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SessionServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SessionServiceStub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.discoveryengine.v1alpha.UpdateSessionRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SessionServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SessionServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SessionServiceStubSettings.java
index 948b47f6c5fa..edcf5e21e06f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SessionServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SessionServiceStubSettings.java
@@ -65,6 +65,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SiteSearchEngineServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SiteSearchEngineServiceStub.java
index fb6837059aa4..e01c4a46514c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SiteSearchEngineServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SiteSearchEngineServiceStub.java
@@ -61,6 +61,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SiteSearchEngineServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SiteSearchEngineServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SiteSearchEngineServiceStubSettings.java
index 1e9ebd5fe6f1..606e83500bae 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SiteSearchEngineServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/SiteSearchEngineServiceStubSettings.java
@@ -94,6 +94,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -173,6 +174,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/UserEventServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/UserEventServiceStub.java
index a0eadeeff74b..23ddde231616 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/UserEventServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/UserEventServiceStub.java
@@ -33,6 +33,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class UserEventServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/UserEventServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/UserEventServiceStubSettings.java
index b0fd60abc014..1ca0ab79bf46 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/UserEventServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1alpha/stub/UserEventServiceStubSettings.java
@@ -59,6 +59,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/AclConfigServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/AclConfigServiceClient.java
index 78518248c9a5..412a6ce34c95 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/AclConfigServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/AclConfigServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AclConfigServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/AclConfigServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/AclConfigServiceSettings.java
index b0684c152127..d389d55daef9 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/AclConfigServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/AclConfigServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AclConfigServiceSettings extends ClientSettings<AclConfigServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/AssistantServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/AssistantServiceClient.java
index 013b04e4cdcc..b89a1739b160 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/AssistantServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/AssistantServiceClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -230,6 +231,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AssistantServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/AssistantServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/AssistantServiceSettings.java
index 4d310fdc2b11..c1d255892ff4 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/AssistantServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/AssistantServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AssistantServiceSettings extends ClientSettings<AssistantServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/CmekConfigServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/CmekConfigServiceClient.java
index c0237896cd4e..9ebe2898581a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/CmekConfigServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/CmekConfigServiceClient.java
@@ -29,6 +29,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -195,6 +196,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CmekConfigServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/CmekConfigServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/CmekConfigServiceSettings.java
index 29ce467cd95f..4eacb65964ca 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/CmekConfigServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/CmekConfigServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CmekConfigServiceSettings extends ClientSettings<CmekConfigServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/CompletionServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/CompletionServiceClient.java
index 4f88e387fcb3..8705d8ed9214 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/CompletionServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/CompletionServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -229,6 +230,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CompletionServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/CompletionServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/CompletionServiceSettings.java
index 670d31206bd4..2a359e289144 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/CompletionServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/CompletionServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CompletionServiceSettings extends ClientSettings<CompletionServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ControlServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ControlServiceClient.java
index 24821d5a60fa..fda91cbbc5b6 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ControlServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ControlServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -224,6 +225,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ControlServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ControlServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ControlServiceSettings.java
index 08b2e33f943d..cc174a1a2c3f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ControlServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ControlServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ControlServiceSettings extends ClientSettings<ControlServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ConversationalSearchServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ConversationalSearchServiceClient.java
index 51d7904725b4..a7e0935e3478 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ConversationalSearchServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ConversationalSearchServiceClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -388,6 +389,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConversationalSearchServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ConversationalSearchServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ConversationalSearchServiceSettings.java
index fc9ea030268e..bd828bcefebb 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ConversationalSearchServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ConversationalSearchServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConversationalSearchServiceSettings
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/DataStoreServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/DataStoreServiceClient.java
index c148974de4ba..5564cc043d27 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/DataStoreServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/DataStoreServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -227,6 +228,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataStoreServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/DataStoreServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/DataStoreServiceSettings.java
index 0dc0efd227fb..612086a67e38 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/DataStoreServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/DataStoreServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataStoreServiceSettings extends ClientSettings<DataStoreServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/DocumentServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/DocumentServiceClient.java
index 555f6b21e2b9..6a1d4f7588bf 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/DocumentServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/DocumentServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -277,6 +278,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DocumentServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/DocumentServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/DocumentServiceSettings.java
index 98dff36e8cce..64b7754e98da 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/DocumentServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/DocumentServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DocumentServiceSettings extends ClientSettings<DocumentServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/EngineServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/EngineServiceClient.java
index b6de51f6f657..5357e993707c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/EngineServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/EngineServiceClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -323,6 +324,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EngineServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/EngineServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/EngineServiceSettings.java
index d0f38471a3ff..8d1e305eada6 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/EngineServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/EngineServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EngineServiceSettings extends ClientSettings<EngineServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/EvaluationServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/EvaluationServiceClient.java
index 4b302e08ba04..b8e6b060737f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/EvaluationServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/EvaluationServiceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -206,6 +207,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EvaluationServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/EvaluationServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/EvaluationServiceSettings.java
index 73c364df44c6..bb07598215b1 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/EvaluationServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/EvaluationServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EvaluationServiceSettings extends ClientSettings<EvaluationServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/GroundedGenerationServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/GroundedGenerationServiceClient.java
index 24a25643652a..94995d5524cd 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/GroundedGenerationServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/GroundedGenerationServiceClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -162,6 +163,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GroundedGenerationServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/GroundedGenerationServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/GroundedGenerationServiceSettings.java
index f9ff11a20cc8..14a2c84b38bf 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/GroundedGenerationServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/GroundedGenerationServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GroundedGenerationServiceSettings
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/IdentityMappingStoreServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/IdentityMappingStoreServiceClient.java
index eacd312a2f2d..5b506c038070 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/IdentityMappingStoreServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/IdentityMappingStoreServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -254,6 +255,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class IdentityMappingStoreServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/IdentityMappingStoreServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/IdentityMappingStoreServiceSettings.java
index 591a54ec81b0..0ec0b4d0b262 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/IdentityMappingStoreServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/IdentityMappingStoreServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class IdentityMappingStoreServiceSettings
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/LicenseConfigServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/LicenseConfigServiceClient.java
index edaf4250679d..6819d3959e5c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/LicenseConfigServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/LicenseConfigServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -242,6 +243,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LicenseConfigServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/LicenseConfigServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/LicenseConfigServiceSettings.java
index 2b3a2cc5a286..ce68234940ce 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/LicenseConfigServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/LicenseConfigServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LicenseConfigServiceSettings extends ClientSettings<LicenseConfigServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ProjectServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ProjectServiceClient.java
index 572b71b9d09c..3dae15596257 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ProjectServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ProjectServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -135,6 +136,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProjectServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ProjectServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ProjectServiceSettings.java
index 61f46cfb13b2..6159d21d3303 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ProjectServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ProjectServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProjectServiceSettings extends ClientSettings<ProjectServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/RankServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/RankServiceClient.java
index bc623a1c4d6a..6323c6d7f1e7 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/RankServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/RankServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class RankServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/RankServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/RankServiceSettings.java
index b1e902d955cf..8e8cebacd268 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/RankServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/RankServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class RankServiceSettings extends ClientSettings<RankServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/RecommendationServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/RecommendationServiceClient.java
index 2d7f12250b7d..91137ac43017 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/RecommendationServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/RecommendationServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -140,6 +141,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class RecommendationServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/RecommendationServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/RecommendationServiceSettings.java
index a0fa21d7e269..c044e375624b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/RecommendationServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/RecommendationServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class RecommendationServiceSettings extends ClientSettings<RecommendationServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQueryServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQueryServiceClient.java
index 4e67579de948..cf5fbd85cb35 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQueryServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQueryServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -240,6 +241,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SampleQueryServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQueryServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQueryServiceSettings.java
index cf77b2b683b4..104f9e5c4952 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQueryServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQueryServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SampleQueryServiceSettings extends ClientSettings<SampleQueryServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQuerySetServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQuerySetServiceClient.java
index 2e28fde339d3..a0730fd8170d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQuerySetServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQuerySetServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -221,6 +222,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SampleQuerySetServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQuerySetServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQuerySetServiceSettings.java
index 57441786b84e..ad1978efb5c3 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQuerySetServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQuerySetServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SampleQuerySetServiceSettings extends ClientSettings<SampleQuerySetServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SchemaServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SchemaServiceClient.java
index 4578964f6afb..b94ff7a1d574 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SchemaServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SchemaServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -218,6 +219,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SchemaServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SchemaServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SchemaServiceSettings.java
index 7c028d2af4ac..81098f58feda 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SchemaServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SchemaServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SchemaServiceSettings extends ClientSettings<SchemaServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SearchServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SearchServiceClient.java
index 090a09825b8a..45cd86353e09 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SearchServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SearchServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -203,6 +204,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SearchServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SearchServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SearchServiceSettings.java
index 1f1da1504024..5c3c5f475bfe 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SearchServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SearchServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SearchServiceSettings extends ClientSettings<SearchServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SearchTuningServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SearchTuningServiceClient.java
index 3bcb5035bbad..3f7f3d4671ee 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SearchTuningServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SearchTuningServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SearchTuningServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SearchTuningServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SearchTuningServiceSettings.java
index 3f54a90f341e..d17797798c81 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SearchTuningServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SearchTuningServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SearchTuningServiceSettings extends ClientSettings<SearchTuningServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ServingConfigServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ServingConfigServiceClient.java
index 97b18c67e372..ba9d80caeaec 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ServingConfigServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ServingConfigServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -231,6 +232,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ServingConfigServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ServingConfigServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ServingConfigServiceSettings.java
index f10b24c3fed6..6b794d7cfc8b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ServingConfigServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/ServingConfigServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ServingConfigServiceSettings extends ClientSettings<ServingConfigServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SessionServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SessionServiceClient.java
index 525d49c9ba03..317371c772e8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SessionServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SessionServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -219,6 +220,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SessionServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SessionServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SessionServiceSettings.java
index d79c19503a68..b95e9d41846a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SessionServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SessionServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SessionServiceSettings extends ClientSettings<SessionServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SiteSearchEngineServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SiteSearchEngineServiceClient.java
index 8b19a5450856..f7c5344544b4 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SiteSearchEngineServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SiteSearchEngineServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -395,6 +396,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SiteSearchEngineServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SiteSearchEngineServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SiteSearchEngineServiceSettings.java
index 1d62b109e5e7..385fa1aff460 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SiteSearchEngineServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/SiteSearchEngineServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SiteSearchEngineServiceSettings
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserEventServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserEventServiceClient.java
index 2c3e7c732f65..a97118deefa6 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserEventServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserEventServiceClient.java
@@ -29,6 +29,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -186,6 +187,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class UserEventServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserEventServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserEventServiceSettings.java
index 5597b8f745e7..c017ac3f9d9a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserEventServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserEventServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class UserEventServiceSettings extends ClientSettings<UserEventServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserLicenseServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserLicenseServiceClient.java
index fec207703e9d..bb2fa774ed40 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserLicenseServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserLicenseServiceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -180,6 +181,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class UserLicenseServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserLicenseServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserLicenseServiceSettings.java
index bc7aa19a612e..d85a84c7f99d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserLicenseServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserLicenseServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class UserLicenseServiceSettings extends ClientSettings<UserLicenseServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserStoreServiceClient.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserStoreServiceClient.java
index 3c4627815cbc..71681ef9dbe0 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserStoreServiceClient.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserStoreServiceClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class UserStoreServiceClient implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserStoreServiceSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserStoreServiceSettings.java
index 0a21ea2a2f0a..d6fbeb5a7599 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserStoreServiceSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/UserStoreServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class UserStoreServiceSettings extends ClientSettings<UserStoreServiceSettings> {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/AclConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/AclConfigServiceStub.java
index 829160d0caf2..01d6c92fc3d2 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/AclConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/AclConfigServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.cloud.discoveryengine.v1beta.GetAclConfigRequest;
 import com.google.cloud.discoveryengine.v1beta.UpdateAclConfigRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AclConfigServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/AclConfigServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/AclConfigServiceStubSettings.java
index 7abb93460a48..f334519e432d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/AclConfigServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/AclConfigServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/AssistantServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/AssistantServiceStub.java
index 359a27ade3ce..3d75f9c664e9 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/AssistantServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/AssistantServiceStub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.discoveryengine.v1beta.UpdateAssistantRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AssistantServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/AssistantServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/AssistantServiceStubSettings.java
index 6861d94d7e98..503c015bba8d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/AssistantServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/AssistantServiceStubSettings.java
@@ -64,6 +64,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/CmekConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/CmekConfigServiceStub.java
index 37e2158ff508..14dfb93e71e8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/CmekConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/CmekConfigServiceStub.java
@@ -32,6 +32,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CmekConfigServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/CmekConfigServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/CmekConfigServiceStubSettings.java
index 25b95e17d33e..d05598c43fc5 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/CmekConfigServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/CmekConfigServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/CompletionServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/CompletionServiceStub.java
index 6afcc7283d5c..8013c94c4c87 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/CompletionServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/CompletionServiceStub.java
@@ -41,6 +41,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CompletionServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/CompletionServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/CompletionServiceStubSettings.java
index 771825ff98b2..b3d9f74741b7 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/CompletionServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/CompletionServiceStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ControlServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ControlServiceStub.java
index 372fe99bc592..de9bdb64829b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ControlServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ControlServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.discoveryengine.v1beta.UpdateControlRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ControlServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ControlServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ControlServiceStubSettings.java
index f028c2f9f3bc..0fbb2b93eab2 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ControlServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ControlServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ConversationalSearchServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ConversationalSearchServiceStub.java
index c594f2676e24..5dce76767179 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ConversationalSearchServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ConversationalSearchServiceStub.java
@@ -45,6 +45,7 @@
 import com.google.cloud.discoveryengine.v1beta.UpdateSessionRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ConversationalSearchServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ConversationalSearchServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ConversationalSearchServiceStubSettings.java
index cd35cc645ceb..40f789e8daa3 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ConversationalSearchServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ConversationalSearchServiceStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/DataStoreServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/DataStoreServiceStub.java
index 2a7f95e46d7b..c9dc909e8558 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/DataStoreServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/DataStoreServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DataStoreServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/DataStoreServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/DataStoreServiceStubSettings.java
index 4d31592d86c0..ef2a5518e767 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/DataStoreServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/DataStoreServiceStubSettings.java
@@ -68,6 +68,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/DocumentServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/DocumentServiceStub.java
index 5e1f8e66c916..d19c35729c54 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/DocumentServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/DocumentServiceStub.java
@@ -41,6 +41,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DocumentServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/DocumentServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/DocumentServiceStubSettings.java
index 643557f23575..0788a14ad2bb 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/DocumentServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/DocumentServiceStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/EngineServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/EngineServiceStub.java
index f7eb4d6df66b..ad8c5e86f5e4 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/EngineServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/EngineServiceStub.java
@@ -43,6 +43,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class EngineServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/EngineServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/EngineServiceStubSettings.java
index 824151a0a558..a83d2b68cea3 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/EngineServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/EngineServiceStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/EvaluationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/EvaluationServiceStub.java
index 0dc62a242565..02395d4d33d7 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/EvaluationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/EvaluationServiceStub.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class EvaluationServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/EvaluationServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/EvaluationServiceStubSettings.java
index f337564d12f2..0aa593bbfda4 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/EvaluationServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/EvaluationServiceStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GroundedGenerationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GroundedGenerationServiceStub.java
index 7aee040b9e70..4fb2c7bcf6e6 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GroundedGenerationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GroundedGenerationServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.cloud.discoveryengine.v1beta.GenerateGroundedContentRequest;
 import com.google.cloud.discoveryengine.v1beta.GenerateGroundedContentResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class GroundedGenerationServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GroundedGenerationServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GroundedGenerationServiceStubSettings.java
index edb1c2966f85..49716bc37b7c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GroundedGenerationServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GroundedGenerationServiceStubSettings.java
@@ -49,6 +49,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcAclConfigServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcAclConfigServiceCallableFactory.java
index c9a3dbf0f007..5090a066569f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcAclConfigServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcAclConfigServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAclConfigServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcAclConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcAclConfigServiceStub.java
index 48708a28e548..bc797ca652d0 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcAclConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcAclConfigServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAclConfigServiceStub extends AclConfigServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcAssistantServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcAssistantServiceCallableFactory.java
index 21fd9505b249..7785dcf8969f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcAssistantServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcAssistantServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAssistantServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcAssistantServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcAssistantServiceStub.java
index 78510f29fc2b..7614c2a4da21 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcAssistantServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcAssistantServiceStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAssistantServiceStub extends AssistantServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcCmekConfigServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcCmekConfigServiceCallableFactory.java
index 825c5a3aaed3..1d98fba5d086 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcCmekConfigServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcCmekConfigServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCmekConfigServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcCmekConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcCmekConfigServiceStub.java
index 23fc62473f89..008bd32754bc 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcCmekConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcCmekConfigServiceStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCmekConfigServiceStub extends CmekConfigServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcCompletionServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcCompletionServiceCallableFactory.java
index 7665d69fdc5d..ff0bcdc2f8fc 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcCompletionServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcCompletionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCompletionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcCompletionServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcCompletionServiceStub.java
index 1c485fdecea5..6d63bf395bed 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcCompletionServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcCompletionServiceStub.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCompletionServiceStub extends CompletionServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcControlServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcControlServiceCallableFactory.java
index 14641dcdc169..b23f10f2d4c2 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcControlServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcControlServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcControlServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcControlServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcControlServiceStub.java
index a92750b9aef0..254b40616882 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcControlServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcControlServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcControlServiceStub extends ControlServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcConversationalSearchServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcConversationalSearchServiceCallableFactory.java
index 936a6e9109bf..869b5588cffe 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcConversationalSearchServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcConversationalSearchServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConversationalSearchServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcConversationalSearchServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcConversationalSearchServiceStub.java
index 6e49e849d255..c0a235c673eb 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcConversationalSearchServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcConversationalSearchServiceStub.java
@@ -55,6 +55,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConversationalSearchServiceStub extends ConversationalSearchServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcDataStoreServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcDataStoreServiceCallableFactory.java
index 0493bd7350ff..96ff1589302d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcDataStoreServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcDataStoreServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataStoreServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcDataStoreServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcDataStoreServiceStub.java
index 464ff43fe9e0..ecdb2e87a4ce 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcDataStoreServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcDataStoreServiceStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataStoreServiceStub extends DataStoreServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcDocumentServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcDocumentServiceCallableFactory.java
index adcb27a1e0b7..13cfc817f4ba 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcDocumentServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcDocumentServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDocumentServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcDocumentServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcDocumentServiceStub.java
index b44a8441af80..88c10ed421a0 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcDocumentServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcDocumentServiceStub.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDocumentServiceStub extends DocumentServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcEngineServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcEngineServiceCallableFactory.java
index fd8c748e6174..b4c4af051cb5 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcEngineServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcEngineServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEngineServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcEngineServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcEngineServiceStub.java
index 41ac45940a80..ecd3ebbf6aa4 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcEngineServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcEngineServiceStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEngineServiceStub extends EngineServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcEvaluationServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcEvaluationServiceCallableFactory.java
index 24fcea4dbb2f..3bf3c51adc93 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcEvaluationServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcEvaluationServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEvaluationServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcEvaluationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcEvaluationServiceStub.java
index a089ff54cba8..83e197f404b5 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcEvaluationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcEvaluationServiceStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEvaluationServiceStub extends EvaluationServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcGroundedGenerationServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcGroundedGenerationServiceCallableFactory.java
index b2ffdd590600..e9724d90e059 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcGroundedGenerationServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcGroundedGenerationServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGroundedGenerationServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcGroundedGenerationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcGroundedGenerationServiceStub.java
index b4cc46cd6bd1..00bf25ae6284 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcGroundedGenerationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcGroundedGenerationServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGroundedGenerationServiceStub extends GroundedGenerationServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcIdentityMappingStoreServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcIdentityMappingStoreServiceCallableFactory.java
index f006693f3c75..55e4e0725b4c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcIdentityMappingStoreServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcIdentityMappingStoreServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcIdentityMappingStoreServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcIdentityMappingStoreServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcIdentityMappingStoreServiceStub.java
index 27c89f69b1e8..931f77b26db8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcIdentityMappingStoreServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcIdentityMappingStoreServiceStub.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcIdentityMappingStoreServiceStub extends IdentityMappingStoreServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcLicenseConfigServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcLicenseConfigServiceCallableFactory.java
index 45a21f9befc6..6789bec8c535 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcLicenseConfigServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcLicenseConfigServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLicenseConfigServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcLicenseConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcLicenseConfigServiceStub.java
index e30d85d616bb..261357bd30d8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcLicenseConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcLicenseConfigServiceStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLicenseConfigServiceStub extends LicenseConfigServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcProjectServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcProjectServiceCallableFactory.java
index 345084ae30e1..98809cc33892 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcProjectServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcProjectServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProjectServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcProjectServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcProjectServiceStub.java
index bfe02ca4a0e2..b6d019f70e3c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcProjectServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcProjectServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProjectServiceStub extends ProjectServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcRankServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcRankServiceCallableFactory.java
index 9adaa970d822..c7bcdaa1d47c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcRankServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcRankServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcRankServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcRankServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcRankServiceStub.java
index acdabd8899d3..7a613677a10e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcRankServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcRankServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcRankServiceStub extends RankServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcRecommendationServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcRecommendationServiceCallableFactory.java
index aafe61506b93..d7d1454bdafd 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcRecommendationServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcRecommendationServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcRecommendationServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcRecommendationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcRecommendationServiceStub.java
index 7ede2b1be57e..e6bb60620c5f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcRecommendationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcRecommendationServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcRecommendationServiceStub extends RecommendationServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSampleQueryServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSampleQueryServiceCallableFactory.java
index 78e21305193c..2d3bfd1fb744 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSampleQueryServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSampleQueryServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSampleQueryServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSampleQueryServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSampleQueryServiceStub.java
index 2f28869fa2d9..7398ba112853 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSampleQueryServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSampleQueryServiceStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSampleQueryServiceStub extends SampleQueryServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSampleQuerySetServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSampleQuerySetServiceCallableFactory.java
index 6d09f98a8170..d8025fff6d52 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSampleQuerySetServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSampleQuerySetServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSampleQuerySetServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSampleQuerySetServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSampleQuerySetServiceStub.java
index 38e43658d05c..82c58b547a8a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSampleQuerySetServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSampleQuerySetServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSampleQuerySetServiceStub extends SampleQuerySetServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSchemaServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSchemaServiceCallableFactory.java
index e9c1ecec25a1..eb8f24ee7f1d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSchemaServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSchemaServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSchemaServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSchemaServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSchemaServiceStub.java
index 436716ece6cd..59d34bbd50f0 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSchemaServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSchemaServiceStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSchemaServiceStub extends SchemaServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSearchServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSearchServiceCallableFactory.java
index 29adc411286e..a780642a97d9 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSearchServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSearchServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSearchServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSearchServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSearchServiceStub.java
index bf365d15c1fd..6efbf3179d11 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSearchServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSearchServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSearchServiceStub extends SearchServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSearchTuningServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSearchTuningServiceCallableFactory.java
index db53e7a30f3c..7b914e51fd16 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSearchTuningServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSearchTuningServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSearchTuningServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSearchTuningServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSearchTuningServiceStub.java
index d06512207aa7..6945c52fa513 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSearchTuningServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSearchTuningServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSearchTuningServiceStub extends SearchTuningServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcServingConfigServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcServingConfigServiceCallableFactory.java
index 89acc49ffe51..477172db6900 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcServingConfigServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcServingConfigServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcServingConfigServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcServingConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcServingConfigServiceStub.java
index fea1f3dce36b..7cc48adaed9f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcServingConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcServingConfigServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcServingConfigServiceStub extends ServingConfigServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSessionServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSessionServiceCallableFactory.java
index 9245cedb72e8..aad348fdefe0 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSessionServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSessionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSessionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSessionServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSessionServiceStub.java
index 7c68c32b6729..a83c8457f56e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSessionServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSessionServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSessionServiceStub extends SessionServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSiteSearchEngineServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSiteSearchEngineServiceCallableFactory.java
index 515854e9b013..eff2599264be 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSiteSearchEngineServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSiteSearchEngineServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSiteSearchEngineServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSiteSearchEngineServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSiteSearchEngineServiceStub.java
index 3ef5229403b6..30b00234e020 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSiteSearchEngineServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcSiteSearchEngineServiceStub.java
@@ -72,6 +72,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -79,6 +80,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSiteSearchEngineServiceStub extends SiteSearchEngineServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserEventServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserEventServiceCallableFactory.java
index c226fae30b57..f694821b3460 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserEventServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserEventServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcUserEventServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserEventServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserEventServiceStub.java
index 69de6d652e7a..1e71a8b1bab2 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserEventServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserEventServiceStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcUserEventServiceStub extends UserEventServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserLicenseServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserLicenseServiceCallableFactory.java
index 71917c9a1a9c..3e57ffd10ddb 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserLicenseServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserLicenseServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcUserLicenseServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserLicenseServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserLicenseServiceStub.java
index 25e8e0c09fc0..33d1e6a6109b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserLicenseServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserLicenseServiceStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcUserLicenseServiceStub extends UserLicenseServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserStoreServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserStoreServiceCallableFactory.java
index 2d7d67a126dd..021a7456f749 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserStoreServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserStoreServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcUserStoreServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserStoreServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserStoreServiceStub.java
index 988732d3a9b8..fb178f626fdd 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserStoreServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/GrpcUserStoreServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcUserStoreServiceStub extends UserStoreServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonAclConfigServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonAclConfigServiceCallableFactory.java
index 1a05e6997796..22f01852d8f8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonAclConfigServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonAclConfigServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAclConfigServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonAclConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonAclConfigServiceStub.java
index 174e1841b4c7..a5bb0391738b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonAclConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonAclConfigServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAclConfigServiceStub extends AclConfigServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonAssistantServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonAssistantServiceCallableFactory.java
index 9a096e92b502..1aa7e47e0cf9 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonAssistantServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonAssistantServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAssistantServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonAssistantServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonAssistantServiceStub.java
index 577b5cb90daf..b9735834d19b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonAssistantServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonAssistantServiceStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAssistantServiceStub extends AssistantServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonCmekConfigServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonCmekConfigServiceCallableFactory.java
index 878b5d3b206d..d16e2fca3987 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonCmekConfigServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonCmekConfigServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCmekConfigServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonCmekConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonCmekConfigServiceStub.java
index a5e67e908386..3b2a97ce47ac 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonCmekConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonCmekConfigServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCmekConfigServiceStub extends CmekConfigServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonCompletionServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonCompletionServiceCallableFactory.java
index cc00eaacf7f2..272a5fbe6aee 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonCompletionServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonCompletionServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCompletionServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonCompletionServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonCompletionServiceStub.java
index aabf36f74283..5be38ac95f79 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonCompletionServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonCompletionServiceStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCompletionServiceStub extends CompletionServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonControlServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonControlServiceCallableFactory.java
index 5be4ff49b3fa..b87288bdcd7e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonControlServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonControlServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonControlServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonControlServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonControlServiceStub.java
index 9d1df1810468..bd52029dba33 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonControlServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonControlServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonControlServiceStub extends ControlServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonConversationalSearchServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonConversationalSearchServiceCallableFactory.java
index e12b04db9666..3163d15552b8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonConversationalSearchServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonConversationalSearchServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationalSearchServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonConversationalSearchServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonConversationalSearchServiceStub.java
index e2fda4dcebed..620d1015a39a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonConversationalSearchServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonConversationalSearchServiceStub.java
@@ -62,6 +62,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationalSearchServiceStub extends ConversationalSearchServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonDataStoreServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonDataStoreServiceCallableFactory.java
index 58b3cf64f924..2b2e394d1c94 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonDataStoreServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonDataStoreServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataStoreServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonDataStoreServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonDataStoreServiceStub.java
index 7a960d9b4216..2d716fcf3c0a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonDataStoreServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonDataStoreServiceStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataStoreServiceStub extends DataStoreServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonDocumentServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonDocumentServiceCallableFactory.java
index 92c70f8cd900..c893824ddc20 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonDocumentServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonDocumentServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonDocumentServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonDocumentServiceStub.java
index 785041edab37..d2687c3b5418 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonDocumentServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonDocumentServiceStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentServiceStub extends DocumentServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonEngineServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonEngineServiceCallableFactory.java
index 5b1a07b34fd6..1361d8cc208e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonEngineServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonEngineServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEngineServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonEngineServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonEngineServiceStub.java
index 5b87ae1086e8..b2e81552bf5d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonEngineServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonEngineServiceStub.java
@@ -63,6 +63,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEngineServiceStub extends EngineServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonEvaluationServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonEvaluationServiceCallableFactory.java
index 2b2f511367ce..c5284b9cd3f3 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonEvaluationServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonEvaluationServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEvaluationServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonEvaluationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonEvaluationServiceStub.java
index 851a865ee5d2..148c30f985e7 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonEvaluationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonEvaluationServiceStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEvaluationServiceStub extends EvaluationServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonGroundedGenerationServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonGroundedGenerationServiceCallableFactory.java
index 9b88c6dda069..c2579a00896b 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonGroundedGenerationServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonGroundedGenerationServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGroundedGenerationServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonGroundedGenerationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonGroundedGenerationServiceStub.java
index d6810642d4a2..91270eb8cf2a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonGroundedGenerationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonGroundedGenerationServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGroundedGenerationServiceStub extends GroundedGenerationServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonIdentityMappingStoreServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonIdentityMappingStoreServiceCallableFactory.java
index 886acbc559cc..d5a0b5e4d2f3 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonIdentityMappingStoreServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonIdentityMappingStoreServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonIdentityMappingStoreServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonIdentityMappingStoreServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonIdentityMappingStoreServiceStub.java
index 960d75302bbf..a0b9f7f0db66 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonIdentityMappingStoreServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonIdentityMappingStoreServiceStub.java
@@ -60,6 +60,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonIdentityMappingStoreServiceStub extends IdentityMappingStoreServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonLicenseConfigServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonLicenseConfigServiceCallableFactory.java
index 682d9b52c95c..3796a7d69cbf 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonLicenseConfigServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonLicenseConfigServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonLicenseConfigServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonLicenseConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonLicenseConfigServiceStub.java
index 3968f1c7f691..747297475681 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonLicenseConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonLicenseConfigServiceStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonLicenseConfigServiceStub extends LicenseConfigServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonProjectServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonProjectServiceCallableFactory.java
index 57117ddd0b16..14e11515db92 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonProjectServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonProjectServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProjectServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonProjectServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonProjectServiceStub.java
index 6b1440e77d30..30664ec1dd1f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonProjectServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonProjectServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProjectServiceStub extends ProjectServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonRankServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonRankServiceCallableFactory.java
index e5d9a5d5e978..a64e86e8e031 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonRankServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonRankServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonRankServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonRankServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonRankServiceStub.java
index 072a4008ac3c..63a14a4fe3d4 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonRankServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonRankServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonRankServiceStub extends RankServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonRecommendationServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonRecommendationServiceCallableFactory.java
index 10dad5786ca4..23cbc97c15d5 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonRecommendationServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonRecommendationServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonRecommendationServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonRecommendationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonRecommendationServiceStub.java
index ac2758196fbe..d8847916c5d3 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonRecommendationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonRecommendationServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonRecommendationServiceStub extends RecommendationServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSampleQueryServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSampleQueryServiceCallableFactory.java
index b58a7e6161d4..2a3859664c48 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSampleQueryServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSampleQueryServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSampleQueryServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSampleQueryServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSampleQueryServiceStub.java
index f0edd903b8db..9f16dc62165a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSampleQueryServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSampleQueryServiceStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSampleQueryServiceStub extends SampleQueryServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSampleQuerySetServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSampleQuerySetServiceCallableFactory.java
index 658e1e700df6..7766152af0e9 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSampleQuerySetServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSampleQuerySetServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSampleQuerySetServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSampleQuerySetServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSampleQuerySetServiceStub.java
index fd9dee6b9213..95f1420e358e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSampleQuerySetServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSampleQuerySetServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSampleQuerySetServiceStub extends SampleQuerySetServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSchemaServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSchemaServiceCallableFactory.java
index 39927eb8ffc6..a67552bdd36e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSchemaServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSchemaServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSchemaServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSchemaServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSchemaServiceStub.java
index a83160c32223..2f7fdd9e19cf 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSchemaServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSchemaServiceStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSchemaServiceStub extends SchemaServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSearchServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSearchServiceCallableFactory.java
index 8f87ee6a3f34..002b2faf92b1 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSearchServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSearchServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSearchServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSearchServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSearchServiceStub.java
index c8754d9bbc64..c1a7e7c5289c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSearchServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSearchServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSearchServiceStub extends SearchServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSearchTuningServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSearchTuningServiceCallableFactory.java
index 0b6b8994c56e..ff48dcdf8cfe 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSearchTuningServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSearchTuningServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSearchTuningServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSearchTuningServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSearchTuningServiceStub.java
index 68153bc87303..0989e5520a44 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSearchTuningServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSearchTuningServiceStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSearchTuningServiceStub extends SearchTuningServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonServingConfigServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonServingConfigServiceCallableFactory.java
index 99218aae6840..7114aeb07225 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonServingConfigServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonServingConfigServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonServingConfigServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonServingConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonServingConfigServiceStub.java
index 48f64d4efc89..384d96498fc4 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonServingConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonServingConfigServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonServingConfigServiceStub extends ServingConfigServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSessionServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSessionServiceCallableFactory.java
index ab650e0e70d2..ab1fdccfda1a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSessionServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSessionServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSessionServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSessionServiceStub.java
index e717cc92915b..4bfbaa0d0132 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSessionServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSessionServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSessionServiceStub extends SessionServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSiteSearchEngineServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSiteSearchEngineServiceCallableFactory.java
index 38b10f973400..f80744feb024 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSiteSearchEngineServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSiteSearchEngineServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSiteSearchEngineServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSiteSearchEngineServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSiteSearchEngineServiceStub.java
index 32ef3238e8db..29c40c1b8e3a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSiteSearchEngineServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonSiteSearchEngineServiceStub.java
@@ -83,6 +83,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSiteSearchEngineServiceStub extends SiteSearchEngineServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserEventServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserEventServiceCallableFactory.java
index f67d036db90a..e03d57515b84 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserEventServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserEventServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonUserEventServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserEventServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserEventServiceStub.java
index 486f1ca296cc..b845c3ab1e9e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserEventServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserEventServiceStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonUserEventServiceStub extends UserEventServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserLicenseServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserLicenseServiceCallableFactory.java
index 3252c80377c7..f9e10f7647d1 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserLicenseServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserLicenseServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonUserLicenseServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserLicenseServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserLicenseServiceStub.java
index 283fb6f94982..09d22d3c687a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserLicenseServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserLicenseServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonUserLicenseServiceStub extends UserLicenseServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserStoreServiceCallableFactory.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserStoreServiceCallableFactory.java
index 39ba51767ae8..36720518f7c0 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserStoreServiceCallableFactory.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserStoreServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonUserStoreServiceCallableFactory
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserStoreServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserStoreServiceStub.java
index 420e79fc202e..aa75506ad7f3 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserStoreServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/HttpJsonUserStoreServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonUserStoreServiceStub extends UserStoreServiceStub {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/IdentityMappingStoreServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/IdentityMappingStoreServiceStub.java
index 12891382a2c0..a4ebaae8a77f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/IdentityMappingStoreServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/IdentityMappingStoreServiceStub.java
@@ -40,6 +40,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class IdentityMappingStoreServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/IdentityMappingStoreServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/IdentityMappingStoreServiceStubSettings.java
index 5637e83bc1a4..2c19e21eb077 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/IdentityMappingStoreServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/IdentityMappingStoreServiceStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/LicenseConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/LicenseConfigServiceStub.java
index ed2a41a2fd9f..7cc564d7d845 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/LicenseConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/LicenseConfigServiceStub.java
@@ -32,6 +32,7 @@
 import com.google.cloud.discoveryengine.v1beta.RetractLicenseConfigResponse;
 import com.google.cloud.discoveryengine.v1beta.UpdateLicenseConfigRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class LicenseConfigServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/LicenseConfigServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/LicenseConfigServiceStubSettings.java
index 44dee5f338bd..e54433e28840 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/LicenseConfigServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/LicenseConfigServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ProjectServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ProjectServiceStub.java
index c31a86980d4f..03326f2844f7 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ProjectServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ProjectServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ProjectServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ProjectServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ProjectServiceStubSettings.java
index 7d3adc3b9ba8..7cc59767971f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ProjectServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ProjectServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -130,6 +131,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/RankServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/RankServiceStub.java
index 098da3298fc9..8d7f8ca4df07 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/RankServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/RankServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.discoveryengine.v1beta.RankRequest;
 import com.google.cloud.discoveryengine.v1beta.RankResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class RankServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/RankServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/RankServiceStubSettings.java
index 48c8c3c0da46..d713010dd14e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/RankServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/RankServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/RecommendationServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/RecommendationServiceStub.java
index 92d89f74aabf..2c75dc61fdc8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/RecommendationServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/RecommendationServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.discoveryengine.v1beta.RecommendRequest;
 import com.google.cloud.discoveryengine.v1beta.RecommendResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class RecommendationServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/RecommendationServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/RecommendationServiceStubSettings.java
index 225289590bd1..39692ae51f2f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/RecommendationServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/RecommendationServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SampleQueryServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SampleQueryServiceStub.java
index 5f5ec0285655..82fd00270f33 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SampleQueryServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SampleQueryServiceStub.java
@@ -36,6 +36,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SampleQueryServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SampleQueryServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SampleQueryServiceStubSettings.java
index c2620be46aeb..f702fb92aa42 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SampleQueryServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SampleQueryServiceStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SampleQuerySetServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SampleQuerySetServiceStub.java
index 14aa38a931eb..19954ebbf2a8 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SampleQuerySetServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SampleQuerySetServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.discoveryengine.v1beta.UpdateSampleQuerySetRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SampleQuerySetServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SampleQuerySetServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SampleQuerySetServiceStubSettings.java
index 2acef9e999d6..34120e45944e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SampleQuerySetServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SampleQuerySetServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SchemaServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SchemaServiceStub.java
index 6a59c1ccbeed..88323a2efe8c 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SchemaServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SchemaServiceStub.java
@@ -36,6 +36,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SchemaServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SchemaServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SchemaServiceStubSettings.java
index 99957320dc07..8b729382105a 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SchemaServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SchemaServiceStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SearchServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SearchServiceStub.java
index 83bb72e8322e..46eae736f5ee 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SearchServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SearchServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.cloud.discoveryengine.v1beta.SearchRequest;
 import com.google.cloud.discoveryengine.v1beta.SearchResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SearchServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SearchServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SearchServiceStubSettings.java
index 0e5832ddc8a3..6f3e8407ddf5 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SearchServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SearchServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SearchTuningServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SearchTuningServiceStub.java
index b55981b845e8..068219a2aa61 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SearchTuningServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SearchTuningServiceStub.java
@@ -28,6 +28,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SearchTuningServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SearchTuningServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SearchTuningServiceStubSettings.java
index e3cdb3eef010..07239874da58 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SearchTuningServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SearchTuningServiceStubSettings.java
@@ -54,6 +54,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -133,6 +134,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ServingConfigServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ServingConfigServiceStub.java
index 88ca1ad8cba9..3a22213ee263 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ServingConfigServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ServingConfigServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.discoveryengine.v1beta.UpdateServingConfigRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ServingConfigServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ServingConfigServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ServingConfigServiceStubSettings.java
index 1fd86ef77a21..3a9f8456792e 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ServingConfigServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/ServingConfigServiceStubSettings.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SessionServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SessionServiceStub.java
index 83c1756ddb12..9dac0cdf15c7 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SessionServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SessionServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.discoveryengine.v1beta.UpdateSessionRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SessionServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SessionServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SessionServiceStubSettings.java
index e76305359e30..744102d78130 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SessionServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SessionServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SiteSearchEngineServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SiteSearchEngineServiceStub.java
index 4639e91d862b..700028ca7eda 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SiteSearchEngineServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SiteSearchEngineServiceStub.java
@@ -63,6 +63,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SiteSearchEngineServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SiteSearchEngineServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SiteSearchEngineServiceStubSettings.java
index 993804b74a68..11f577bff49d 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SiteSearchEngineServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/SiteSearchEngineServiceStubSettings.java
@@ -96,6 +96,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -175,6 +176,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserEventServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserEventServiceStub.java
index fa62d11f5c1f..618fdf6cf741 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserEventServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserEventServiceStub.java
@@ -33,6 +33,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class UserEventServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserEventServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserEventServiceStubSettings.java
index 939a93c3b5f8..2300b0680dc5 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserEventServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserEventServiceStubSettings.java
@@ -59,6 +59,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserLicenseServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserLicenseServiceStub.java
index 44add97a3e62..54f6ece1b9ab 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserLicenseServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserLicenseServiceStub.java
@@ -32,6 +32,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class UserLicenseServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserLicenseServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserLicenseServiceStubSettings.java
index dca29e3095f8..6e5856668a94 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserLicenseServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserLicenseServiceStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserStoreServiceStub.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserStoreServiceStub.java
index 295fef965dca..f30e675fb52f 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserStoreServiceStub.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserStoreServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.cloud.discoveryengine.v1beta.UpdateUserStoreRequest;
 import com.google.cloud.discoveryengine.v1beta.UserStore;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class UserStoreServiceStub implements BackgroundResource {
diff --git a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserStoreServiceStubSettings.java b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserStoreServiceStubSettings.java
index 42c24b950fbd..45c15fce64f6 100644
--- a/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserStoreServiceStubSettings.java
+++ b/java-discoveryengine/google-cloud-discoveryengine/src/main/java/com/google/cloud/discoveryengine/v1beta/stub/UserStoreServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/AnswerName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/AnswerName.java
index cf3c4478597c..6d100b74b754 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/AnswerName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/AnswerName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnswerName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_SESSION_ANSWER =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/AssistantName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/AssistantName.java
index b1200f754a52..ee69a917c059 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/AssistantName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/AssistantName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AssistantName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_COLLECTION_ENGINE_ASSISTANT =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/BranchName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/BranchName.java
index 3e425e0a244f..ffa843f697f9 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/BranchName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/BranchName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BranchName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_BRANCH =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/CmekConfigName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/CmekConfigName.java
index 1950ee5def5f..6f9a6697be2a 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/CmekConfigName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/CmekConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CmekConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/CollectionName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/CollectionName.java
index db03793ffea9..0d4832a371ec 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/CollectionName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/CollectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CollectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_COLLECTION =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/ControlName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/ControlName.java
index a505afd62cb3..52e29b495d69 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/ControlName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/ControlName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ControlName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_CONTROL =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/ConversationName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/ConversationName.java
index 4992568ec74f..6929592d6f02 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/ConversationName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/ConversationName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_CONVERSATION =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/DataStoreName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/DataStoreName.java
index 223dcb1ccb54..e885bf7ef1ae 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/DataStoreName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/DataStoreName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataStoreName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/DocumentName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/DocumentName.java
index 0be9b3100db9..76879da20952 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/DocumentName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/DocumentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_BRANCH_DOCUMENT =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/EngineName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/EngineName.java
index 3e106099dc7e..dfab86e639f1 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/EngineName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/EngineName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EngineName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_COLLECTION_ENGINE =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/GroundingConfigName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/GroundingConfigName.java
index 4b89a0f904b8..7210a1c7ec3b 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/GroundingConfigName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/GroundingConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GroundingConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GROUNDING_CONFIG =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/IdentityMappingStoreName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/IdentityMappingStoreName.java
index fd4eb186a505..f88b6942bdc5 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/IdentityMappingStoreName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/IdentityMappingStoreName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IdentityMappingStoreName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_IDENTITY_MAPPING_STORE =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/LocationName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/LocationName.java
index c113fb657932..f59fc2f87a32 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/LocationName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/ProjectName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/ProjectName.java
index 9d22aa4dcbe2..381863a3d3e5 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/ProjectName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/RankingConfigName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/RankingConfigName.java
index 942e2c02acee..ef9ea546f05c 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/RankingConfigName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/RankingConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RankingConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RANKING_CONFIG =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/SchemaName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/SchemaName.java
index 5a69227f11dd..5dbc97aef975 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/SchemaName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/SchemaName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SchemaName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_SCHEMA =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/ServingConfigName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/ServingConfigName.java
index 9f255b726603..ea1de087e959 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/ServingConfigName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/ServingConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServingConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_SERVING_CONFIG =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/SessionName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/SessionName.java
index 898faba7d12c..34c3cb1a90a3 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/SessionName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/SessionName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_SESSION =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/SiteSearchEngineName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/SiteSearchEngineName.java
index e56d9fca71db..ea2d0a1399ec 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/SiteSearchEngineName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/SiteSearchEngineName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SiteSearchEngineName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/SitemapName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/SitemapName.java
index 6877317487d4..d8ddedbbb6e4 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/SitemapName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/SitemapName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SitemapName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_SITEMAP =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/TargetSiteName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/TargetSiteName.java
index 05d082563fa7..51bf2bd288e6 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/TargetSiteName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/TargetSiteName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetSiteName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_TARGET_SITE =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/UserStoreName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/UserStoreName.java
index 65127b0431d8..c904f179db82 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/UserStoreName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1/src/main/java/com/google/cloud/discoveryengine/v1/UserStoreName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserStoreName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_USER_STORE =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/AclConfigName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/AclConfigName.java
index 485ef549be33..07fd9afea466 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/AclConfigName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/AclConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AclConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/AnswerName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/AnswerName.java
index a4321703a765..4980df06ccc1 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/AnswerName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/AnswerName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnswerName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_SESSION_ANSWER =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/BranchName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/BranchName.java
index 38cf4a120fc7..54c6c296bb94 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/BranchName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/BranchName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BranchName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_BRANCH =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ChunkName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ChunkName.java
index cd0693cb156c..1f024dbd7798 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ChunkName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ChunkName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ChunkName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_BRANCH_DOCUMENT_CHUNK =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/CollectionName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/CollectionName.java
index 3366fad468c7..00235b6e9ba7 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/CollectionName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/CollectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CollectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_COLLECTION =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ControlName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ControlName.java
index 4ccdd4c32498..466051d224f0 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ControlName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ControlName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ControlName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_CONTROL =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ConversationName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ConversationName.java
index 7f45f39ba50e..a9ff7970338b 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ConversationName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ConversationName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_CONVERSATION =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/DataStoreName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/DataStoreName.java
index 440ca2fa0689..9c81935a538d 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/DataStoreName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/DataStoreName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataStoreName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/DocumentName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/DocumentName.java
index 77884960c255..54cea7eae31e 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/DocumentName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/DocumentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_BRANCH_DOCUMENT =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/DocumentProcessingConfigName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/DocumentProcessingConfigName.java
index 1aa98bcfdf59..7d37cf3d43e0 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/DocumentProcessingConfigName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/DocumentProcessingConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentProcessingConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/EngineName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/EngineName.java
index f787f9e4b5e6..ddfb80c4fc46 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/EngineName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/EngineName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EngineName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_COLLECTION_ENGINE =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/EvaluationName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/EvaluationName.java
index 49a1d5615fe9..4b05672c028d 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/EvaluationName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/EvaluationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EvaluationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_EVALUATION =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/GroundingConfigName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/GroundingConfigName.java
index 58ce011dff16..d3da300e8c29 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/GroundingConfigName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/GroundingConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GroundingConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GROUNDING_CONFIG =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/LocationName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/LocationName.java
index 0c5e998754d4..44ff29213b48 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/LocationName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ProjectName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ProjectName.java
index e9e30576aa31..91b0bec5ce2e 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ProjectName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/RankingConfigName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/RankingConfigName.java
index 59f9be7a74f4..2fbeeebc55ca 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/RankingConfigName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/RankingConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RankingConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RANKING_CONFIG =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQueryName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQueryName.java
index 6a4f03883e21..7dd6c2a928c3 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQueryName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQueryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SampleQueryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SAMPLE_QUERY_SET_SAMPLE_QUERY =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQuerySetName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQuerySetName.java
index c3af8e91134c..ad647231d22c 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQuerySetName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SampleQuerySetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SampleQuerySetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SAMPLE_QUERY_SET =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SchemaName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SchemaName.java
index f1de6006e3ca..105c1b8c7bf6 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SchemaName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SchemaName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SchemaName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_SCHEMA =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ServingConfigName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ServingConfigName.java
index 16fb72bbecca..29be653fcc10 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ServingConfigName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/ServingConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServingConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_SERVING_CONFIG =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SessionName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SessionName.java
index 332502fcd9e5..e20ac18efea3 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SessionName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SessionName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_SESSION =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SiteSearchEngineName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SiteSearchEngineName.java
index 5faceeff6e44..14c5ee7552fa 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SiteSearchEngineName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/SiteSearchEngineName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SiteSearchEngineName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/TargetSiteName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/TargetSiteName.java
index 1c673c68fd6c..1866ff83d85e 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/TargetSiteName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1alpha/src/main/java/com/google/cloud/discoveryengine/v1alpha/TargetSiteName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetSiteName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_TARGET_SITE =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/AclConfigName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/AclConfigName.java
index 21a94fe81ec4..aee36bce4311 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/AclConfigName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/AclConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AclConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/AnswerName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/AnswerName.java
index dd4ffe91ed74..b9ba15a0b5bf 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/AnswerName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/AnswerName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnswerName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_SESSION_ANSWER =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/AssistantName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/AssistantName.java
index b44addd41341..43c7bd801c4d 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/AssistantName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/AssistantName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AssistantName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_COLLECTION_ENGINE_ASSISTANT =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/BillingAccountLicenseConfigName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/BillingAccountLicenseConfigName.java
index 0a8d3f4953dc..f67627bdc607 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/BillingAccountLicenseConfigName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/BillingAccountLicenseConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BillingAccountLicenseConfigName implements ResourceName {
   private static final PathTemplate BILLING_ACCOUNT_BILLING_ACCOUNT_LICENSE_CONFIG =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/BranchName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/BranchName.java
index 739c0bc81b5d..ed9dea1bb05b 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/BranchName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/BranchName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BranchName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_BRANCH =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/CmekConfigName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/CmekConfigName.java
index b436e35bc99e..11ceddf2060f 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/CmekConfigName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/CmekConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CmekConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/CollectionName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/CollectionName.java
index 8a797c041fc7..31e36c22529a 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/CollectionName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/CollectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CollectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_COLLECTION =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/CompletionConfigName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/CompletionConfigName.java
index 169def1940dc..97f1db61e42f 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/CompletionConfigName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/CompletionConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompletionConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/ControlName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/ControlName.java
index a4a76346feab..66459362d6bc 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/ControlName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/ControlName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ControlName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_CONTROL =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/ConversationName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/ConversationName.java
index 9cb4c73d8eb0..f882c107578e 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/ConversationName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/ConversationName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_CONVERSATION =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/DataStoreName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/DataStoreName.java
index 660feaf64469..0aedc959d802 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/DataStoreName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/DataStoreName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataStoreName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/DocumentName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/DocumentName.java
index 79792237a8bc..3dfffa0af27b 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/DocumentName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/DocumentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_BRANCH_DOCUMENT =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/EngineName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/EngineName.java
index a7683da0f1d2..10db29bef18b 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/EngineName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/EngineName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EngineName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_COLLECTION_ENGINE =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/EvaluationName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/EvaluationName.java
index dc851d9999d9..ec5311a0e405 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/EvaluationName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/EvaluationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EvaluationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_EVALUATION =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/GroundingConfigName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/GroundingConfigName.java
index fe7f3b69b9f3..8cb91a794728 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/GroundingConfigName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/GroundingConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GroundingConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GROUNDING_CONFIG =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/IdentityMappingStoreName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/IdentityMappingStoreName.java
index 689a06b377f6..812c9874096c 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/IdentityMappingStoreName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/IdentityMappingStoreName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IdentityMappingStoreName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_IDENTITY_MAPPING_STORE =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/LicenseConfigName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/LicenseConfigName.java
index 1b5f55122089..0c47c471bd9c 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/LicenseConfigName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/LicenseConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LicenseConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_LICENSE_CONFIG =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/LocationName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/LocationName.java
index 35145c5e22ec..801aaa74e919 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/LocationName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/ProjectName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/ProjectName.java
index e8ae92120af4..a423a6cc0a8b 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/ProjectName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/RankingConfigName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/RankingConfigName.java
index 5a9e102e36db..4fc3a423d7f8 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/RankingConfigName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/RankingConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RankingConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RANKING_CONFIG =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQueryName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQueryName.java
index d80a927b51d6..a505e75dc0c7 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQueryName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQueryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SampleQueryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SAMPLE_QUERY_SET_SAMPLE_QUERY =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQuerySetName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQuerySetName.java
index decc824a542b..93833f0f35c4 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQuerySetName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SampleQuerySetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SampleQuerySetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SAMPLE_QUERY_SET =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SchemaName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SchemaName.java
index 473140aa232e..37c860c27e27 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SchemaName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SchemaName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SchemaName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_SCHEMA =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/ServingConfigName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/ServingConfigName.java
index 7ba6cb34769e..e94eaa1485e4 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/ServingConfigName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/ServingConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServingConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_SERVING_CONFIG =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SessionName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SessionName.java
index 99d846895a22..4dc2743bb64e 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SessionName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SessionName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_SESSION =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SiteSearchEngineName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SiteSearchEngineName.java
index dca18290f2cb..f1c298cf57d0 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SiteSearchEngineName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SiteSearchEngineName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SiteSearchEngineName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SitemapName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SitemapName.java
index 0812dd5b1865..8d714ceaf408 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SitemapName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/SitemapName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SitemapName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_SITEMAP =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/TargetSiteName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/TargetSiteName.java
index 606055740b87..6717ff57c220 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/TargetSiteName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/TargetSiteName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetSiteName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_STORE_TARGET_SITE =
diff --git a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/UserStoreName.java b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/UserStoreName.java
index 519934f7a2f1..c2fb8f5f596b 100644
--- a/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/UserStoreName.java
+++ b/java-discoveryengine/proto-google-cloud-discoveryengine-v1beta/src/main/java/com/google/cloud/discoveryengine/v1beta/UserStoreName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserStoreName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_USER_STORE =
diff --git a/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/EdgeContainerClient.java b/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/EdgeContainerClient.java
index 19950193485f..516a8ea6ce2a 100644
--- a/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/EdgeContainerClient.java
+++ b/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/EdgeContainerClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -548,6 +549,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EdgeContainerClient implements BackgroundResource {
   private final EdgeContainerSettings settings;
diff --git a/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/EdgeContainerSettings.java b/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/EdgeContainerSettings.java
index ee4291562263..2b52c2f747e1 100644
--- a/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/EdgeContainerSettings.java
+++ b/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/EdgeContainerSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EdgeContainerSettings extends ClientSettings<EdgeContainerSettings> {
 
diff --git a/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/EdgeContainerStub.java b/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/EdgeContainerStub.java
index 5a9dfe52d707..723120926b5e 100644
--- a/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/EdgeContainerStub.java
+++ b/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/EdgeContainerStub.java
@@ -65,6 +65,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EdgeContainerStub implements BackgroundResource {
 
diff --git a/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/EdgeContainerStubSettings.java b/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/EdgeContainerStubSettings.java
index 7b58eec02774..5777b65a08c9 100644
--- a/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/EdgeContainerStubSettings.java
+++ b/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/EdgeContainerStubSettings.java
@@ -99,6 +99,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -176,6 +177,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EdgeContainerStubSettings extends StubSettings<EdgeContainerStubSettings> {
diff --git a/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/GrpcEdgeContainerCallableFactory.java b/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/GrpcEdgeContainerCallableFactory.java
index d5592c8c9f36..34aeb4b8e218 100644
--- a/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/GrpcEdgeContainerCallableFactory.java
+++ b/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/GrpcEdgeContainerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEdgeContainerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/GrpcEdgeContainerStub.java b/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/GrpcEdgeContainerStub.java
index 7124969f6d25..06d276849a4b 100644
--- a/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/GrpcEdgeContainerStub.java
+++ b/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/GrpcEdgeContainerStub.java
@@ -74,6 +74,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEdgeContainerStub extends EdgeContainerStub {
   private static final MethodDescriptor<ListClustersRequest, ListClustersResponse>
diff --git a/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/HttpJsonEdgeContainerCallableFactory.java b/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/HttpJsonEdgeContainerCallableFactory.java
index 79a61dbbf05d..38ba8c273330 100644
--- a/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/HttpJsonEdgeContainerCallableFactory.java
+++ b/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/HttpJsonEdgeContainerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEdgeContainerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/HttpJsonEdgeContainerStub.java b/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/HttpJsonEdgeContainerStub.java
index 431a04399266..832cc8a152cd 100644
--- a/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/HttpJsonEdgeContainerStub.java
+++ b/java-distributedcloudedge/google-cloud-distributedcloudedge/src/main/java/com/google/cloud/edgecontainer/v1/stub/HttpJsonEdgeContainerStub.java
@@ -85,6 +85,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEdgeContainerStub extends EdgeContainerStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/ClusterName.java b/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/ClusterName.java
index a8884609c95d..4a0003ecd367 100644
--- a/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/ClusterName.java
+++ b/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/ClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER =
diff --git a/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/LocationName.java b/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/LocationName.java
index aa7f2dc15983..d46cfbb928d5 100644
--- a/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/LocationName.java
+++ b/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/MachineName.java b/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/MachineName.java
index ed2b6eb03569..7e06847c407c 100644
--- a/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/MachineName.java
+++ b/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/MachineName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MachineName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MACHINE =
diff --git a/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/NodePoolName.java b/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/NodePoolName.java
index a5291af36f0d..ddc095673154 100644
--- a/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/NodePoolName.java
+++ b/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/NodePoolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NodePoolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER_NODE_POOL =
diff --git a/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/VpnConnectionName.java b/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/VpnConnectionName.java
index 1fb2e5fbe9a6..1003fc8e34d5 100644
--- a/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/VpnConnectionName.java
+++ b/java-distributedcloudedge/proto-google-cloud-distributedcloudedge-v1/src/main/java/com/google/cloud/edgecontainer/v1/VpnConnectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VpnConnectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_VPN_CONNECTION =
diff --git a/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/DlpServiceClient.java b/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/DlpServiceClient.java
index 1fe56143ca93..04d37aa9aa49 100644
--- a/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/DlpServiceClient.java
+++ b/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/DlpServiceClient.java
@@ -135,6 +135,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1288,6 +1289,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DlpServiceClient implements BackgroundResource {
   private final DlpServiceSettings settings;
diff --git a/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/DlpServiceSettings.java b/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/DlpServiceSettings.java
index 46e68b81e430..c6ba7066b8da 100644
--- a/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/DlpServiceSettings.java
+++ b/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/DlpServiceSettings.java
@@ -130,6 +130,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -180,6 +181,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DlpServiceSettings extends ClientSettings<DlpServiceSettings> {
 
diff --git a/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/DlpServiceStub.java b/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/DlpServiceStub.java
index 6130479b6c52..d06b225f056b 100644
--- a/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/DlpServiceStub.java
+++ b/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/DlpServiceStub.java
@@ -117,6 +117,7 @@
 import com.google.privacy.dlp.v2.UpdateStoredInfoTypeRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DlpServiceStub implements BackgroundResource {
 
diff --git a/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/DlpServiceStubSettings.java b/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/DlpServiceStubSettings.java
index 7dbe6ac87455..91594d3aaf6d 100644
--- a/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/DlpServiceStubSettings.java
+++ b/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/DlpServiceStubSettings.java
@@ -149,6 +149,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -199,6 +200,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DlpServiceStubSettings extends StubSettings<DlpServiceStubSettings> {
diff --git a/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/GrpcDlpServiceCallableFactory.java b/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/GrpcDlpServiceCallableFactory.java
index 1b34b95d42b7..40cc324530a0 100644
--- a/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/GrpcDlpServiceCallableFactory.java
+++ b/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/GrpcDlpServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDlpServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/GrpcDlpServiceStub.java b/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/GrpcDlpServiceStub.java
index 8ad851b82e85..798738095358 100644
--- a/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/GrpcDlpServiceStub.java
+++ b/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/GrpcDlpServiceStub.java
@@ -127,6 +127,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -134,6 +135,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDlpServiceStub extends DlpServiceStub {
   private static final MethodDescriptor<InspectContentRequest, InspectContentResponse>
diff --git a/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/HttpJsonDlpServiceCallableFactory.java b/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/HttpJsonDlpServiceCallableFactory.java
index b8458bab28bd..4e914b8e73fc 100644
--- a/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/HttpJsonDlpServiceCallableFactory.java
+++ b/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/HttpJsonDlpServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDlpServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/HttpJsonDlpServiceStub.java b/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/HttpJsonDlpServiceStub.java
index 475085b7b467..09e87c7b73a2 100644
--- a/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/HttpJsonDlpServiceStub.java
+++ b/java-dlp/google-cloud-dlp/src/main/java/com/google/cloud/dlp/v2/stub/HttpJsonDlpServiceStub.java
@@ -134,6 +134,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDlpServiceStub extends DlpServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/ColumnDataProfileName.java b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/ColumnDataProfileName.java
index 6398a72c3ee3..8df36f71e5a5 100644
--- a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/ColumnDataProfileName.java
+++ b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/ColumnDataProfileName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ColumnDataProfileName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_COLUMN_DATA_PROFILE =
diff --git a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/ConnectionName.java b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/ConnectionName.java
index 9d23102d6eab..6f367dfac57d 100644
--- a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/ConnectionName.java
+++ b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/ConnectionName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConnectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONNECTION =
diff --git a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/DeidentifyTemplateName.java b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/DeidentifyTemplateName.java
index cb3afd215612..681716e78f3c 100644
--- a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/DeidentifyTemplateName.java
+++ b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/DeidentifyTemplateName.java
@@ -24,8 +24,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeidentifyTemplateName implements ResourceName {
   private static final PathTemplate ORGANIZATION_DEIDENTIFY_TEMPLATE =
diff --git a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/DiscoveryConfigName.java b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/DiscoveryConfigName.java
index d64008bff5d6..2abd31520c9b 100644
--- a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/DiscoveryConfigName.java
+++ b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/DiscoveryConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DiscoveryConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DISCOVERY_CONFIG =
diff --git a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/DlpContentName.java b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/DlpContentName.java
index e8b0487c670d..6328d67f998a 100644
--- a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/DlpContentName.java
+++ b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/DlpContentName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DlpContentName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/DlpJobName.java b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/DlpJobName.java
index d4b1db167af9..45e04c52229a 100644
--- a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/DlpJobName.java
+++ b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/DlpJobName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DlpJobName implements ResourceName {
   private static final PathTemplate PROJECT_DLP_JOB =
diff --git a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/FileStoreDataProfileName.java b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/FileStoreDataProfileName.java
index daebd9cc7c09..90fdcbd7aabe 100644
--- a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/FileStoreDataProfileName.java
+++ b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/FileStoreDataProfileName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FileStoreDataProfileName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_FILE_STORE_DATA_PROFILE =
diff --git a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/InspectTemplateName.java b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/InspectTemplateName.java
index 0d2e0d457782..a85f8c4a37ed 100644
--- a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/InspectTemplateName.java
+++ b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/InspectTemplateName.java
@@ -24,8 +24,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InspectTemplateName implements ResourceName {
   private static final PathTemplate ORGANIZATION_INSPECT_TEMPLATE =
diff --git a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/JobTriggerName.java b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/JobTriggerName.java
index df8d4380cd5d..a9f539b1ff68 100644
--- a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/JobTriggerName.java
+++ b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/JobTriggerName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobTriggerName implements ResourceName {
   private static final PathTemplate PROJECT_JOB_TRIGGER =
diff --git a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/LocationName.java b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/LocationName.java
index 1448da94ebe2..f8d91953bce4 100644
--- a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/LocationName.java
+++ b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/OrganizationLocationName.java b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/OrganizationLocationName.java
index 1d6af17cd7f2..b141e46b4141 100644
--- a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/OrganizationLocationName.java
+++ b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/OrganizationLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationLocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/OrganizationName.java b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/OrganizationName.java
index d83cfa368492..2e711adc47b3 100644
--- a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/OrganizationName.java
+++ b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/ProjectDataProfileName.java b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/ProjectDataProfileName.java
index 01d7dfd06f38..70f3d6c5b9fc 100644
--- a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/ProjectDataProfileName.java
+++ b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/ProjectDataProfileName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectDataProfileName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_PROJECT_DATA_PROFILE =
diff --git a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/ProjectName.java b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/ProjectName.java
index bd893c0a4225..fc7d20dafa12 100644
--- a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/ProjectName.java
+++ b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/StoredInfoTypeName.java b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/StoredInfoTypeName.java
index e6a4ec3c3e51..dd22112c4298 100644
--- a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/StoredInfoTypeName.java
+++ b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/StoredInfoTypeName.java
@@ -24,8 +24,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StoredInfoTypeName implements ResourceName {
   private static final PathTemplate ORGANIZATION_STORED_INFO_TYPE =
diff --git a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/TableDataProfileName.java b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/TableDataProfileName.java
index e590d497397e..0439266de79d 100644
--- a/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/TableDataProfileName.java
+++ b/java-dlp/proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/TableDataProfileName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TableDataProfileName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_TABLE_DATA_PROFILE =
diff --git a/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/DataMigrationServiceClient.java b/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/DataMigrationServiceClient.java
index 1548a703c982..1ce5a710ab7d 100644
--- a/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/DataMigrationServiceClient.java
+++ b/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/DataMigrationServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -835,6 +836,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataMigrationServiceClient implements BackgroundResource {
   private final DataMigrationServiceSettings settings;
diff --git a/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/DataMigrationServiceSettings.java b/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/DataMigrationServiceSettings.java
index c70419de1685..01f81557ffe3 100644
--- a/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/DataMigrationServiceSettings.java
+++ b/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/DataMigrationServiceSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataMigrationServiceSettings extends ClientSettings<DataMigrationServiceSettings> {
 
diff --git a/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/stub/DataMigrationServiceStub.java b/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/stub/DataMigrationServiceStub.java
index 9315e6cfa244..429d0735c04a 100644
--- a/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/stub/DataMigrationServiceStub.java
+++ b/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/stub/DataMigrationServiceStub.java
@@ -89,6 +89,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -96,6 +97,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataMigrationServiceStub implements BackgroundResource {
 
diff --git a/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/stub/DataMigrationServiceStubSettings.java b/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/stub/DataMigrationServiceStubSettings.java
index 4a634d5c136b..5e71e6f62a71 100644
--- a/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/stub/DataMigrationServiceStubSettings.java
+++ b/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/stub/DataMigrationServiceStubSettings.java
@@ -120,6 +120,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -198,6 +199,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataMigrationServiceStubSettings
diff --git a/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/stub/GrpcDataMigrationServiceCallableFactory.java b/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/stub/GrpcDataMigrationServiceCallableFactory.java
index e2615456f87b..12ada23271e6 100644
--- a/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/stub/GrpcDataMigrationServiceCallableFactory.java
+++ b/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/stub/GrpcDataMigrationServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataMigrationServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/stub/GrpcDataMigrationServiceStub.java b/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/stub/GrpcDataMigrationServiceStub.java
index 4281c65edb42..e4225769f312 100644
--- a/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/stub/GrpcDataMigrationServiceStub.java
+++ b/java-dms/google-cloud-dms/src/main/java/com/google/cloud/clouddms/v1/stub/GrpcDataMigrationServiceStub.java
@@ -98,6 +98,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -105,6 +106,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataMigrationServiceStub extends DataMigrationServiceStub {
   private static final MethodDescriptor<ListMigrationJobsRequest, ListMigrationJobsResponse>
diff --git a/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/ConnectionProfileName.java b/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/ConnectionProfileName.java
index b843bd0fd9e8..6be17b074c96 100644
--- a/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/ConnectionProfileName.java
+++ b/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/ConnectionProfileName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConnectionProfileName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONNECTION_PROFILE =
diff --git a/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/ConversionWorkspaceName.java b/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/ConversionWorkspaceName.java
index 5421be1301d7..93c8366d5987 100644
--- a/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/ConversionWorkspaceName.java
+++ b/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/ConversionWorkspaceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversionWorkspaceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONVERSION_WORKSPACE =
diff --git a/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/LocationName.java b/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/LocationName.java
index c4dd17d9027a..30b3eedb22fd 100644
--- a/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/LocationName.java
+++ b/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/MappingRuleName.java b/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/MappingRuleName.java
index e7511cac9219..a1b509e534eb 100644
--- a/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/MappingRuleName.java
+++ b/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/MappingRuleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MappingRuleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONVERSION_WORKSPACE_MAPPING_RULE =
diff --git a/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/MigrationJobName.java b/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/MigrationJobName.java
index f90300f6873b..e02a69aa1329 100644
--- a/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/MigrationJobName.java
+++ b/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/MigrationJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MigrationJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MIGRATION_JOB =
diff --git a/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/PrivateConnectionName.java b/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/PrivateConnectionName.java
index 91ad8f5d58b8..ec57094bffd6 100644
--- a/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/PrivateConnectionName.java
+++ b/java-dms/proto-google-cloud-dms-v1/src/main/java/com/google/cloud/clouddms/v1/PrivateConnectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PrivateConnectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRIVATE_CONNECTION =
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/DocumentProcessorServiceClient.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/DocumentProcessorServiceClient.java
index c7cd8d52ac13..29a6b69ec34c 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/DocumentProcessorServiceClient.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/DocumentProcessorServiceClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -582,6 +583,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentProcessorServiceClient implements BackgroundResource {
   private final DocumentProcessorServiceSettings settings;
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/DocumentProcessorServiceSettings.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/DocumentProcessorServiceSettings.java
index 0d30d584a201..ed9adc280beb 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/DocumentProcessorServiceSettings.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/DocumentProcessorServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DocumentProcessorServiceSettings
     extends ClientSettings<DocumentProcessorServiceSettings> {
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/DocumentProcessorServiceStub.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/DocumentProcessorServiceStub.java
index 60248fec8b32..b0e8343d0cfe 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/DocumentProcessorServiceStub.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/DocumentProcessorServiceStub.java
@@ -85,6 +85,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DocumentProcessorServiceStub implements BackgroundResource {
 
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/DocumentProcessorServiceStubSettings.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/DocumentProcessorServiceStubSettings.java
index 05c9ce6f2208..7afdd28e4647 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/DocumentProcessorServiceStubSettings.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/DocumentProcessorServiceStubSettings.java
@@ -119,6 +119,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -197,6 +198,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DocumentProcessorServiceStubSettings
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/GrpcDocumentProcessorServiceCallableFactory.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/GrpcDocumentProcessorServiceCallableFactory.java
index 9a261e032b83..5482694fe72b 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/GrpcDocumentProcessorServiceCallableFactory.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/GrpcDocumentProcessorServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDocumentProcessorServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/GrpcDocumentProcessorServiceStub.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/GrpcDocumentProcessorServiceStub.java
index d7ac23743d4c..2e0f7edda2ab 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/GrpcDocumentProcessorServiceStub.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/GrpcDocumentProcessorServiceStub.java
@@ -94,6 +94,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDocumentProcessorServiceStub extends DocumentProcessorServiceStub {
   private static final MethodDescriptor<ProcessRequest, ProcessResponse>
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/HttpJsonDocumentProcessorServiceCallableFactory.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/HttpJsonDocumentProcessorServiceCallableFactory.java
index 4143c33fa685..c99236ae1209 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/HttpJsonDocumentProcessorServiceCallableFactory.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/HttpJsonDocumentProcessorServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentProcessorServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/HttpJsonDocumentProcessorServiceStub.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/HttpJsonDocumentProcessorServiceStub.java
index 1ede8ac16f5c..1a48a3027105 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/HttpJsonDocumentProcessorServiceStub.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1/stub/HttpJsonDocumentProcessorServiceStub.java
@@ -105,6 +105,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentProcessorServiceStub extends DocumentProcessorServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/DocumentProcessorServiceClient.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/DocumentProcessorServiceClient.java
index 9b848e7f12e3..c2136f5e9c89 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/DocumentProcessorServiceClient.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/DocumentProcessorServiceClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -603,6 +604,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DocumentProcessorServiceClient implements BackgroundResource {
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/DocumentProcessorServiceSettings.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/DocumentProcessorServiceSettings.java
index 637e9b35a65f..d004f806a11a 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/DocumentProcessorServiceSettings.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/DocumentProcessorServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DocumentProcessorServiceSettings
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/DocumentServiceClient.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/DocumentServiceClient.java
index 2b62134ec0bc..53a647036698 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/DocumentServiceClient.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/DocumentServiceClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -294,6 +295,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DocumentServiceClient implements BackgroundResource {
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/DocumentServiceSettings.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/DocumentServiceSettings.java
index 4413515f5d7e..058b4832f3eb 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/DocumentServiceSettings.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/DocumentServiceSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DocumentServiceSettings extends ClientSettings<DocumentServiceSettings> {
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/DocumentProcessorServiceStub.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/DocumentProcessorServiceStub.java
index 0a0fd793d411..213bbb32c0b7 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/DocumentProcessorServiceStub.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/DocumentProcessorServiceStub.java
@@ -89,6 +89,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -96,6 +97,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DocumentProcessorServiceStub implements BackgroundResource {
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/DocumentProcessorServiceStubSettings.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/DocumentProcessorServiceStubSettings.java
index 3e14c38b3187..caef75ab9395 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/DocumentProcessorServiceStubSettings.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/DocumentProcessorServiceStubSettings.java
@@ -122,6 +122,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -200,6 +201,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/DocumentServiceStub.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/DocumentServiceStub.java
index 714bc13f5e1d..0abc9b665755 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/DocumentServiceStub.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/DocumentServiceStub.java
@@ -46,6 +46,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DocumentServiceStub implements BackgroundResource {
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/DocumentServiceStubSettings.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/DocumentServiceStubSettings.java
index ddef122460d1..e948a788af03 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/DocumentServiceStubSettings.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/DocumentServiceStubSettings.java
@@ -80,6 +80,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -157,6 +158,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/GrpcDocumentProcessorServiceCallableFactory.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/GrpcDocumentProcessorServiceCallableFactory.java
index ac4e0e6c49fe..876b6e68b44b 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/GrpcDocumentProcessorServiceCallableFactory.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/GrpcDocumentProcessorServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDocumentProcessorServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/GrpcDocumentProcessorServiceStub.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/GrpcDocumentProcessorServiceStub.java
index ba23527b6f46..2def9c36b925 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/GrpcDocumentProcessorServiceStub.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/GrpcDocumentProcessorServiceStub.java
@@ -98,6 +98,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -105,6 +106,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDocumentProcessorServiceStub extends DocumentProcessorServiceStub {
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/GrpcDocumentServiceCallableFactory.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/GrpcDocumentServiceCallableFactory.java
index 23c4c7dce9af..a6901446de56 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/GrpcDocumentServiceCallableFactory.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/GrpcDocumentServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDocumentServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/GrpcDocumentServiceStub.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/GrpcDocumentServiceStub.java
index 057b0dd53288..3675c99121ba 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/GrpcDocumentServiceStub.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/GrpcDocumentServiceStub.java
@@ -55,6 +55,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDocumentServiceStub extends DocumentServiceStub {
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/HttpJsonDocumentProcessorServiceCallableFactory.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/HttpJsonDocumentProcessorServiceCallableFactory.java
index c5433e1c27f7..37c68f16e84a 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/HttpJsonDocumentProcessorServiceCallableFactory.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/HttpJsonDocumentProcessorServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentProcessorServiceCallableFactory
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/HttpJsonDocumentProcessorServiceStub.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/HttpJsonDocumentProcessorServiceStub.java
index b7077c6d17b8..e147bea8b48c 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/HttpJsonDocumentProcessorServiceStub.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/HttpJsonDocumentProcessorServiceStub.java
@@ -109,6 +109,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentProcessorServiceStub extends DocumentProcessorServiceStub {
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/HttpJsonDocumentServiceCallableFactory.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/HttpJsonDocumentServiceCallableFactory.java
index 5997da66cc3e..c52dfa7fa5a9 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/HttpJsonDocumentServiceCallableFactory.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/HttpJsonDocumentServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentServiceCallableFactory
diff --git a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/HttpJsonDocumentServiceStub.java b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/HttpJsonDocumentServiceStub.java
index e0149a0ef507..56216c92fa82 100644
--- a/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/HttpJsonDocumentServiceStub.java
+++ b/java-document-ai/google-cloud-document-ai/src/main/java/com/google/cloud/documentai/v1beta3/stub/HttpJsonDocumentServiceStub.java
@@ -66,6 +66,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDocumentServiceStub extends DocumentServiceStub {
diff --git a/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/EvaluationName.java b/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/EvaluationName.java
index 2e0b649ff226..4b903573d7a2 100644
--- a/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/EvaluationName.java
+++ b/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/EvaluationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EvaluationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PROCESSOR_PROCESSOR_VERSION_EVALUATION =
diff --git a/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/HumanReviewConfigName.java b/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/HumanReviewConfigName.java
index 48be1aaefae8..9a2612939028 100644
--- a/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/HumanReviewConfigName.java
+++ b/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/HumanReviewConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HumanReviewConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PROCESSOR =
diff --git a/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/LocationName.java b/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/LocationName.java
index 9d0db72da126..b25fb27dd54a 100644
--- a/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/LocationName.java
+++ b/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/ProcessorName.java b/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/ProcessorName.java
index 1df0f5688912..508e9c0cbc2f 100644
--- a/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/ProcessorName.java
+++ b/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/ProcessorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProcessorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PROCESSOR =
diff --git a/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/ProcessorTypeName.java b/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/ProcessorTypeName.java
index 59dc8e2cb189..b03330c64973 100644
--- a/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/ProcessorTypeName.java
+++ b/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/ProcessorTypeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProcessorTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PROCESSOR_TYPE =
diff --git a/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/ProcessorVersionName.java b/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/ProcessorVersionName.java
index 6376141e0eb5..7decae6a37bd 100644
--- a/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/ProcessorVersionName.java
+++ b/java-document-ai/proto-google-cloud-document-ai-v1/src/main/java/com/google/cloud/documentai/v1/ProcessorVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProcessorVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PROCESSOR_PROCESSOR_VERSION =
diff --git a/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/DatasetName.java b/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/DatasetName.java
index 5a07482e3fa7..83812c2e686c 100644
--- a/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/DatasetName.java
+++ b/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/DatasetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatasetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PROCESSOR =
diff --git a/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/DatasetSchemaName.java b/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/DatasetSchemaName.java
index b3ff3eb13b53..38a720b223d6 100644
--- a/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/DatasetSchemaName.java
+++ b/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/DatasetSchemaName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatasetSchemaName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PROCESSOR =
diff --git a/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/EvaluationName.java b/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/EvaluationName.java
index df76eb221b4e..623fc87f0345 100644
--- a/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/EvaluationName.java
+++ b/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/EvaluationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EvaluationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PROCESSOR_PROCESSOR_VERSION_EVALUATION =
diff --git a/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/HumanReviewConfigName.java b/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/HumanReviewConfigName.java
index ac28aacff0c0..bf244ede42a8 100644
--- a/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/HumanReviewConfigName.java
+++ b/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/HumanReviewConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HumanReviewConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PROCESSOR =
diff --git a/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/LocationName.java b/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/LocationName.java
index c690da3caa59..93ce270c6f28 100644
--- a/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/LocationName.java
+++ b/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/ProcessorName.java b/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/ProcessorName.java
index be4c0916676a..e13fe8947bc2 100644
--- a/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/ProcessorName.java
+++ b/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/ProcessorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProcessorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PROCESSOR =
diff --git a/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/ProcessorTypeName.java b/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/ProcessorTypeName.java
index 7b3a1459b265..7a2dce6e41cd 100644
--- a/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/ProcessorTypeName.java
+++ b/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/ProcessorTypeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProcessorTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PROCESSOR_TYPE =
diff --git a/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/ProcessorVersionName.java b/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/ProcessorVersionName.java
index df672ac34220..8f94e7c6ce8e 100644
--- a/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/ProcessorVersionName.java
+++ b/java-document-ai/proto-google-cloud-document-ai-v1beta3/src/main/java/com/google/cloud/documentai/v1beta3/ProcessorVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProcessorVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PROCESSOR_PROCESSOR_VERSION =
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/DomainsClient.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/DomainsClient.java
index 65197992f7fe..02502840da52 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/DomainsClient.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/DomainsClient.java
@@ -39,6 +39,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -439,6 +440,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DomainsClient implements BackgroundResource {
   private final DomainsSettings settings;
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/DomainsSettings.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/DomainsSettings.java
index 83ee955f4969..e11a8fe7c985 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/DomainsSettings.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/DomainsSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DomainsSettings extends ClientSettings<DomainsSettings> {
 
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/DomainsStub.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/DomainsStub.java
index 6671df2dee67..a73d8b2a1899 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/DomainsStub.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/DomainsStub.java
@@ -47,6 +47,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DomainsStub implements BackgroundResource {
 
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/DomainsStubSettings.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/DomainsStubSettings.java
index 6f7dcf557710..c25a22285a90 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/DomainsStubSettings.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/DomainsStubSettings.java
@@ -81,6 +81,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DomainsStubSettings extends StubSettings<DomainsStubSettings> {
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/GrpcDomainsCallableFactory.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/GrpcDomainsCallableFactory.java
index ac740e9a4724..a1ada75d0b0d 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/GrpcDomainsCallableFactory.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/GrpcDomainsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDomainsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/GrpcDomainsStub.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/GrpcDomainsStub.java
index a41c67c15342..1b1c1ca220ed 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/GrpcDomainsStub.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/GrpcDomainsStub.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDomainsStub extends DomainsStub {
   private static final MethodDescriptor<SearchDomainsRequest, SearchDomainsResponse>
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/HttpJsonDomainsCallableFactory.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/HttpJsonDomainsCallableFactory.java
index 78728c33a40b..933a0845560b 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/HttpJsonDomainsCallableFactory.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/HttpJsonDomainsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDomainsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/HttpJsonDomainsStub.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/HttpJsonDomainsStub.java
index 0a7e138d5f73..d3d7650d53e5 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/HttpJsonDomainsStub.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/HttpJsonDomainsStub.java
@@ -67,6 +67,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDomainsStub extends DomainsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/DomainsClient.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/DomainsClient.java
index 67474f07c181..626d57b27c9f 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/DomainsClient.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/DomainsClient.java
@@ -39,6 +39,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -439,6 +440,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DomainsClient implements BackgroundResource {
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/DomainsSettings.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/DomainsSettings.java
index 3dcd2edea062..4fd03e027eeb 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/DomainsSettings.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/DomainsSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DomainsSettings extends ClientSettings<DomainsSettings> {
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/DomainsStub.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/DomainsStub.java
index 3973fb792326..cc836fb53877 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/DomainsStub.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/DomainsStub.java
@@ -48,6 +48,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DomainsStub implements BackgroundResource {
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/DomainsStubSettings.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/DomainsStubSettings.java
index fc9f3917a45f..29dc4436515b 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/DomainsStubSettings.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/DomainsStubSettings.java
@@ -81,6 +81,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/GrpcDomainsCallableFactory.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/GrpcDomainsCallableFactory.java
index 97780e3aa288..aeb73dacc90a 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/GrpcDomainsCallableFactory.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/GrpcDomainsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDomainsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/GrpcDomainsStub.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/GrpcDomainsStub.java
index 185f038f7057..73243048a8d5 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/GrpcDomainsStub.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/GrpcDomainsStub.java
@@ -57,6 +57,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDomainsStub extends DomainsStub {
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/HttpJsonDomainsCallableFactory.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/HttpJsonDomainsCallableFactory.java
index 81c2ac346d37..ec8d22cb078b 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/HttpJsonDomainsCallableFactory.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/HttpJsonDomainsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDomainsCallableFactory
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/HttpJsonDomainsStub.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/HttpJsonDomainsStub.java
index fd61fe4507d7..2c73b61908cc 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/HttpJsonDomainsStub.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/HttpJsonDomainsStub.java
@@ -68,6 +68,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDomainsStub extends DomainsStub {
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/DomainsClient.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/DomainsClient.java
index 55a1a7d2a756..1034a5554028 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/DomainsClient.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/DomainsClient.java
@@ -39,6 +39,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -439,6 +440,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DomainsClient implements BackgroundResource {
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/DomainsSettings.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/DomainsSettings.java
index 4f7bf3caac80..f006431ce660 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/DomainsSettings.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/DomainsSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DomainsSettings extends ClientSettings<DomainsSettings> {
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/DomainsStub.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/DomainsStub.java
index fe360682a2cb..0b3212858b0d 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/DomainsStub.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/DomainsStub.java
@@ -48,6 +48,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DomainsStub implements BackgroundResource {
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/DomainsStubSettings.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/DomainsStubSettings.java
index 4a075a73cd9d..4abc94beb876 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/DomainsStubSettings.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/DomainsStubSettings.java
@@ -81,6 +81,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/GrpcDomainsCallableFactory.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/GrpcDomainsCallableFactory.java
index 2f45f5f38f42..3a566e1693a1 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/GrpcDomainsCallableFactory.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/GrpcDomainsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDomainsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/GrpcDomainsStub.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/GrpcDomainsStub.java
index eddd4cb804be..9a5ccbe869a2 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/GrpcDomainsStub.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/GrpcDomainsStub.java
@@ -57,6 +57,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDomainsStub extends DomainsStub {
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/HttpJsonDomainsCallableFactory.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/HttpJsonDomainsCallableFactory.java
index 67ab98a5a942..9dac8a24cbe1 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/HttpJsonDomainsCallableFactory.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/HttpJsonDomainsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDomainsCallableFactory
diff --git a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/HttpJsonDomainsStub.java b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/HttpJsonDomainsStub.java
index 3908b4974bba..166b3fa8db77 100644
--- a/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/HttpJsonDomainsStub.java
+++ b/java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/HttpJsonDomainsStub.java
@@ -68,6 +68,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDomainsStub extends DomainsStub {
diff --git a/java-domains/proto-google-cloud-domains-v1/src/main/java/com/google/cloud/domains/v1/LocationName.java b/java-domains/proto-google-cloud-domains-v1/src/main/java/com/google/cloud/domains/v1/LocationName.java
index 5229c4db53f3..e2961bf38830 100644
--- a/java-domains/proto-google-cloud-domains-v1/src/main/java/com/google/cloud/domains/v1/LocationName.java
+++ b/java-domains/proto-google-cloud-domains-v1/src/main/java/com/google/cloud/domains/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-domains/proto-google-cloud-domains-v1/src/main/java/com/google/cloud/domains/v1/RegistrationName.java b/java-domains/proto-google-cloud-domains-v1/src/main/java/com/google/cloud/domains/v1/RegistrationName.java
index ed1a3864ae22..8080bee91137 100644
--- a/java-domains/proto-google-cloud-domains-v1/src/main/java/com/google/cloud/domains/v1/RegistrationName.java
+++ b/java-domains/proto-google-cloud-domains-v1/src/main/java/com/google/cloud/domains/v1/RegistrationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegistrationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REGISTRATION =
diff --git a/java-domains/proto-google-cloud-domains-v1alpha2/src/main/java/com/google/cloud/domains/v1alpha2/LocationName.java b/java-domains/proto-google-cloud-domains-v1alpha2/src/main/java/com/google/cloud/domains/v1alpha2/LocationName.java
index 0efef8033c47..197910067e8d 100644
--- a/java-domains/proto-google-cloud-domains-v1alpha2/src/main/java/com/google/cloud/domains/v1alpha2/LocationName.java
+++ b/java-domains/proto-google-cloud-domains-v1alpha2/src/main/java/com/google/cloud/domains/v1alpha2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-domains/proto-google-cloud-domains-v1alpha2/src/main/java/com/google/cloud/domains/v1alpha2/RegistrationName.java b/java-domains/proto-google-cloud-domains-v1alpha2/src/main/java/com/google/cloud/domains/v1alpha2/RegistrationName.java
index b1eead21384a..aa0e0b898c58 100644
--- a/java-domains/proto-google-cloud-domains-v1alpha2/src/main/java/com/google/cloud/domains/v1alpha2/RegistrationName.java
+++ b/java-domains/proto-google-cloud-domains-v1alpha2/src/main/java/com/google/cloud/domains/v1alpha2/RegistrationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegistrationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REGISTRATION =
diff --git a/java-domains/proto-google-cloud-domains-v1beta1/src/main/java/com/google/cloud/domains/v1beta1/LocationName.java b/java-domains/proto-google-cloud-domains-v1beta1/src/main/java/com/google/cloud/domains/v1beta1/LocationName.java
index ef3e47763920..e34f4b466bb6 100644
--- a/java-domains/proto-google-cloud-domains-v1beta1/src/main/java/com/google/cloud/domains/v1beta1/LocationName.java
+++ b/java-domains/proto-google-cloud-domains-v1beta1/src/main/java/com/google/cloud/domains/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-domains/proto-google-cloud-domains-v1beta1/src/main/java/com/google/cloud/domains/v1beta1/RegistrationName.java b/java-domains/proto-google-cloud-domains-v1beta1/src/main/java/com/google/cloud/domains/v1beta1/RegistrationName.java
index d3f5c24cc4e9..4d8c2b5abdba 100644
--- a/java-domains/proto-google-cloud-domains-v1beta1/src/main/java/com/google/cloud/domains/v1beta1/RegistrationName.java
+++ b/java-domains/proto-google-cloud-domains-v1beta1/src/main/java/com/google/cloud/domains/v1beta1/RegistrationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegistrationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REGISTRATION =
diff --git a/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/EdgeNetworkClient.java b/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/EdgeNetworkClient.java
index 503c5935f250..05916aa70ba3 100644
--- a/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/EdgeNetworkClient.java
+++ b/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/EdgeNetworkClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -666,6 +667,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EdgeNetworkClient implements BackgroundResource {
   private final EdgeNetworkSettings settings;
diff --git a/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/EdgeNetworkSettings.java b/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/EdgeNetworkSettings.java
index 78b0d4fa3df4..9848f5853dba 100644
--- a/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/EdgeNetworkSettings.java
+++ b/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/EdgeNetworkSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EdgeNetworkSettings extends ClientSettings<EdgeNetworkSettings> {
 
diff --git a/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/EdgeNetworkStub.java b/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/EdgeNetworkStub.java
index e96bd490302c..0691276134ca 100644
--- a/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/EdgeNetworkStub.java
+++ b/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/EdgeNetworkStub.java
@@ -78,6 +78,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EdgeNetworkStub implements BackgroundResource {
 
diff --git a/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/EdgeNetworkStubSettings.java b/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/EdgeNetworkStubSettings.java
index d3aa8811e6c8..cbce26459389 100644
--- a/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/EdgeNetworkStubSettings.java
+++ b/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/EdgeNetworkStubSettings.java
@@ -112,6 +112,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -189,6 +190,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EdgeNetworkStubSettings extends StubSettings<EdgeNetworkStubSettings> {
diff --git a/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/GrpcEdgeNetworkCallableFactory.java b/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/GrpcEdgeNetworkCallableFactory.java
index d184afb68062..170f2510c603 100644
--- a/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/GrpcEdgeNetworkCallableFactory.java
+++ b/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/GrpcEdgeNetworkCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEdgeNetworkCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/GrpcEdgeNetworkStub.java b/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/GrpcEdgeNetworkStub.java
index 6e96376486ba..d0b50df618c8 100644
--- a/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/GrpcEdgeNetworkStub.java
+++ b/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/GrpcEdgeNetworkStub.java
@@ -87,6 +87,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -94,6 +95,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEdgeNetworkStub extends EdgeNetworkStub {
   private static final MethodDescriptor<InitializeZoneRequest, InitializeZoneResponse>
diff --git a/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/HttpJsonEdgeNetworkCallableFactory.java b/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/HttpJsonEdgeNetworkCallableFactory.java
index 5dac06efcd3f..1e2efce1e4b9 100644
--- a/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/HttpJsonEdgeNetworkCallableFactory.java
+++ b/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/HttpJsonEdgeNetworkCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEdgeNetworkCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/HttpJsonEdgeNetworkStub.java b/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/HttpJsonEdgeNetworkStub.java
index 6deec75657c5..91f82df6beea 100644
--- a/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/HttpJsonEdgeNetworkStub.java
+++ b/java-edgenetwork/google-cloud-edgenetwork/src/main/java/com/google/cloud/edgenetwork/v1/stub/HttpJsonEdgeNetworkStub.java
@@ -98,6 +98,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -105,6 +106,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEdgeNetworkStub extends EdgeNetworkStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/InterconnectAttachmentName.java b/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/InterconnectAttachmentName.java
index b3d4a121c838..2206bef5fc7a 100644
--- a/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/InterconnectAttachmentName.java
+++ b/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/InterconnectAttachmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterconnectAttachmentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ZONE_INTERCONNECT_ATTACHMENT =
diff --git a/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/InterconnectName.java b/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/InterconnectName.java
index c45a1096d0e8..33dc81a9b46a 100644
--- a/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/InterconnectName.java
+++ b/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/InterconnectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterconnectName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ZONE_INTERCONNECT =
diff --git a/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/LocationName.java b/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/LocationName.java
index c415596569d8..edd4c97c86e1 100644
--- a/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/LocationName.java
+++ b/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/NetworkName.java b/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/NetworkName.java
index 6258345753ba..db50f0f20545 100644
--- a/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/NetworkName.java
+++ b/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/NetworkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ZONE_NETWORK =
diff --git a/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/RouterName.java b/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/RouterName.java
index 99e247e850ca..8a725e0edb3c 100644
--- a/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/RouterName.java
+++ b/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/RouterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RouterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ZONE_ROUTER =
diff --git a/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/SubnetName.java b/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/SubnetName.java
index a0261ea7b1da..2cbcaa566e43 100644
--- a/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/SubnetName.java
+++ b/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/SubnetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SubnetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ZONE_SUBNET =
diff --git a/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/ZoneName.java b/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/ZoneName.java
index fd568cbcc394..91317a1fd8ef 100644
--- a/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/ZoneName.java
+++ b/java-edgenetwork/proto-google-cloud-edgenetwork-v1/src/main/java/com/google/cloud/edgenetwork/v1/ZoneName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ZoneName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ZONE =
diff --git a/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/EnterpriseKnowledgeGraphServiceClient.java b/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/EnterpriseKnowledgeGraphServiceClient.java
index 4bd7df974d71..94124fd2c6ff 100644
--- a/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/EnterpriseKnowledgeGraphServiceClient.java
+++ b/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/EnterpriseKnowledgeGraphServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -298,6 +299,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EnterpriseKnowledgeGraphServiceClient implements BackgroundResource {
   private final EnterpriseKnowledgeGraphServiceSettings settings;
diff --git a/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/EnterpriseKnowledgeGraphServiceSettings.java b/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/EnterpriseKnowledgeGraphServiceSettings.java
index e95e47fcf0ba..5d6f565b4387 100644
--- a/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/EnterpriseKnowledgeGraphServiceSettings.java
+++ b/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/EnterpriseKnowledgeGraphServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EnterpriseKnowledgeGraphServiceSettings
     extends ClientSettings<EnterpriseKnowledgeGraphServiceSettings> {
diff --git a/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/EnterpriseKnowledgeGraphServiceStub.java b/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/EnterpriseKnowledgeGraphServiceStub.java
index 10270ad0b123..61b354f8fd69 100644
--- a/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/EnterpriseKnowledgeGraphServiceStub.java
+++ b/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/EnterpriseKnowledgeGraphServiceStub.java
@@ -37,6 +37,7 @@
 import com.google.cloud.enterpriseknowledgegraph.v1.SearchResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EnterpriseKnowledgeGraphServiceStub implements BackgroundResource {
 
diff --git a/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/EnterpriseKnowledgeGraphServiceStubSettings.java b/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/EnterpriseKnowledgeGraphServiceStubSettings.java
index 5047f6c2a3b5..d83c9ab38535 100644
--- a/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/EnterpriseKnowledgeGraphServiceStubSettings.java
+++ b/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/EnterpriseKnowledgeGraphServiceStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EnterpriseKnowledgeGraphServiceStubSettings
diff --git a/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/GrpcEnterpriseKnowledgeGraphServiceCallableFactory.java b/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/GrpcEnterpriseKnowledgeGraphServiceCallableFactory.java
index 30ee4ac0e8a2..0972fd82eb92 100644
--- a/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/GrpcEnterpriseKnowledgeGraphServiceCallableFactory.java
+++ b/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/GrpcEnterpriseKnowledgeGraphServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEnterpriseKnowledgeGraphServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/GrpcEnterpriseKnowledgeGraphServiceStub.java b/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/GrpcEnterpriseKnowledgeGraphServiceStub.java
index a1ad14e516f9..797e04bcd75b 100644
--- a/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/GrpcEnterpriseKnowledgeGraphServiceStub.java
+++ b/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/GrpcEnterpriseKnowledgeGraphServiceStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEnterpriseKnowledgeGraphServiceStub extends EnterpriseKnowledgeGraphServiceStub {
   private static final MethodDescriptor<
diff --git a/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/HttpJsonEnterpriseKnowledgeGraphServiceCallableFactory.java b/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/HttpJsonEnterpriseKnowledgeGraphServiceCallableFactory.java
index 79980b64d31f..e25472779cd7 100644
--- a/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/HttpJsonEnterpriseKnowledgeGraphServiceCallableFactory.java
+++ b/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/HttpJsonEnterpriseKnowledgeGraphServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEnterpriseKnowledgeGraphServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/HttpJsonEnterpriseKnowledgeGraphServiceStub.java b/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/HttpJsonEnterpriseKnowledgeGraphServiceStub.java
index 4986c689af8d..b0461e8d759c 100644
--- a/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/HttpJsonEnterpriseKnowledgeGraphServiceStub.java
+++ b/java-enterpriseknowledgegraph/google-cloud-enterpriseknowledgegraph/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/stub/HttpJsonEnterpriseKnowledgeGraphServiceStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEnterpriseKnowledgeGraphServiceStub
     extends EnterpriseKnowledgeGraphServiceStub {
diff --git a/java-enterpriseknowledgegraph/proto-google-cloud-enterpriseknowledgegraph-v1/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/CloudKnowledgeGraphEntityName.java b/java-enterpriseknowledgegraph/proto-google-cloud-enterpriseknowledgegraph-v1/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/CloudKnowledgeGraphEntityName.java
index 5e6aa64f59b7..7715b9cf7a69 100644
--- a/java-enterpriseknowledgegraph/proto-google-cloud-enterpriseknowledgegraph-v1/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/CloudKnowledgeGraphEntityName.java
+++ b/java-enterpriseknowledgegraph/proto-google-cloud-enterpriseknowledgegraph-v1/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/CloudKnowledgeGraphEntityName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudKnowledgeGraphEntityName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLOUD_KNOWLEDGE_GRAPH_ENTITY =
diff --git a/java-enterpriseknowledgegraph/proto-google-cloud-enterpriseknowledgegraph-v1/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/EntityReconciliationJobName.java b/java-enterpriseknowledgegraph/proto-google-cloud-enterpriseknowledgegraph-v1/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/EntityReconciliationJobName.java
index 3a1e5ccffe94..4d990f21865c 100644
--- a/java-enterpriseknowledgegraph/proto-google-cloud-enterpriseknowledgegraph-v1/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/EntityReconciliationJobName.java
+++ b/java-enterpriseknowledgegraph/proto-google-cloud-enterpriseknowledgegraph-v1/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/EntityReconciliationJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntityReconciliationJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENTITY_RECONCILIATION_JOB =
diff --git a/java-enterpriseknowledgegraph/proto-google-cloud-enterpriseknowledgegraph-v1/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/LocationName.java b/java-enterpriseknowledgegraph/proto-google-cloud-enterpriseknowledgegraph-v1/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/LocationName.java
index fc6d4bbd37a3..99f71cdbf71d 100644
--- a/java-enterpriseknowledgegraph/proto-google-cloud-enterpriseknowledgegraph-v1/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/LocationName.java
+++ b/java-enterpriseknowledgegraph/proto-google-cloud-enterpriseknowledgegraph-v1/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-enterpriseknowledgegraph/proto-google-cloud-enterpriseknowledgegraph-v1/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/PublicKnowledgeGraphEntityName.java b/java-enterpriseknowledgegraph/proto-google-cloud-enterpriseknowledgegraph-v1/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/PublicKnowledgeGraphEntityName.java
index 40acb98be590..26cc7e97821e 100644
--- a/java-enterpriseknowledgegraph/proto-google-cloud-enterpriseknowledgegraph-v1/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/PublicKnowledgeGraphEntityName.java
+++ b/java-enterpriseknowledgegraph/proto-google-cloud-enterpriseknowledgegraph-v1/src/main/java/com/google/cloud/enterpriseknowledgegraph/v1/PublicKnowledgeGraphEntityName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PublicKnowledgeGraphEntityName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PUBLIC_KNOWLEDGE_GRAPH_ENTITY =
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorGroupServiceClient.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorGroupServiceClient.java
index c7e18c9348e1..c04119b6974a 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorGroupServiceClient.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorGroupServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ErrorGroupServiceClient implements BackgroundResource {
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorGroupServiceSettings.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorGroupServiceSettings.java
index 39083d43fd4e..aba60a92b4c8 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorGroupServiceSettings.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorGroupServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ErrorGroupServiceSettings extends ClientSettings<ErrorGroupServiceSettings> {
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorStatsServiceClient.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorStatsServiceClient.java
index c30991411082..6765ece1d066 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorStatsServiceClient.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorStatsServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -181,6 +182,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ErrorStatsServiceClient implements BackgroundResource {
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorStatsServiceSettings.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorStatsServiceSettings.java
index 2e6fc5ae3ba0..d60b00c6e750 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorStatsServiceSettings.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorStatsServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ErrorStatsServiceSettings extends ClientSettings<ErrorStatsServiceSettings> {
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ReportErrorsServiceClient.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ReportErrorsServiceClient.java
index 6b5a41188dde..31aa8d78068f 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ReportErrorsServiceClient.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ReportErrorsServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ReportErrorsServiceClient implements BackgroundResource {
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ReportErrorsServiceSettings.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ReportErrorsServiceSettings.java
index a4b152eb96ca..2f6b79335ab5 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ReportErrorsServiceSettings.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ReportErrorsServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ReportErrorsServiceSettings extends ClientSettings<ReportErrorsServiceSettings> {
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ErrorGroupServiceStub.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ErrorGroupServiceStub.java
index 4fd97d00bfe6..53dc0513c21b 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ErrorGroupServiceStub.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ErrorGroupServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.devtools.clouderrorreporting.v1beta1.GetGroupRequest;
 import com.google.devtools.clouderrorreporting.v1beta1.UpdateGroupRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ErrorGroupServiceStub implements BackgroundResource {
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ErrorGroupServiceStubSettings.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ErrorGroupServiceStubSettings.java
index 4857996c996f..ecb72c949848 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ErrorGroupServiceStubSettings.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ErrorGroupServiceStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ErrorStatsServiceStub.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ErrorStatsServiceStub.java
index fe87074890da..3b33502cce3e 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ErrorStatsServiceStub.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ErrorStatsServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.devtools.clouderrorreporting.v1beta1.ListGroupStatsRequest;
 import com.google.devtools.clouderrorreporting.v1beta1.ListGroupStatsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ErrorStatsServiceStub implements BackgroundResource {
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ErrorStatsServiceStubSettings.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ErrorStatsServiceStubSettings.java
index 9ac7049b46b4..5e3f563f1b1f 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ErrorStatsServiceStubSettings.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ErrorStatsServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcErrorGroupServiceCallableFactory.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcErrorGroupServiceCallableFactory.java
index daddffb6d9d7..3a6c642ff850 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcErrorGroupServiceCallableFactory.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcErrorGroupServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcErrorGroupServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcErrorGroupServiceStub.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcErrorGroupServiceStub.java
index 70947f435a34..e87e2fe073c1 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcErrorGroupServiceStub.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcErrorGroupServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcErrorGroupServiceStub extends ErrorGroupServiceStub {
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcErrorStatsServiceCallableFactory.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcErrorStatsServiceCallableFactory.java
index e5ac34a89bb1..5463c248cf28 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcErrorStatsServiceCallableFactory.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcErrorStatsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcErrorStatsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcErrorStatsServiceStub.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcErrorStatsServiceStub.java
index 2e1f8455b604..37930d415f0d 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcErrorStatsServiceStub.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcErrorStatsServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcErrorStatsServiceStub extends ErrorStatsServiceStub {
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcReportErrorsServiceCallableFactory.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcReportErrorsServiceCallableFactory.java
index 884bd968867f..39f81cee5fad 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcReportErrorsServiceCallableFactory.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcReportErrorsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcReportErrorsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcReportErrorsServiceStub.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcReportErrorsServiceStub.java
index 5efed8b8495e..885c0e942ce3 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcReportErrorsServiceStub.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/GrpcReportErrorsServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcReportErrorsServiceStub extends ReportErrorsServiceStub {
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonErrorGroupServiceCallableFactory.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonErrorGroupServiceCallableFactory.java
index 8b1abb44fe12..6bc2fa155f97 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonErrorGroupServiceCallableFactory.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonErrorGroupServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonErrorGroupServiceCallableFactory
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonErrorGroupServiceStub.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonErrorGroupServiceStub.java
index cd0e26bb4097..9494e419d212 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonErrorGroupServiceStub.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonErrorGroupServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonErrorGroupServiceStub extends ErrorGroupServiceStub {
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonErrorStatsServiceCallableFactory.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonErrorStatsServiceCallableFactory.java
index 9821f8b83aac..ff86d10f3ed9 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonErrorStatsServiceCallableFactory.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonErrorStatsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonErrorStatsServiceCallableFactory
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonErrorStatsServiceStub.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonErrorStatsServiceStub.java
index 6ad7f5c77731..ad5abd198d68 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonErrorStatsServiceStub.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonErrorStatsServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonErrorStatsServiceStub extends ErrorStatsServiceStub {
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonReportErrorsServiceCallableFactory.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonReportErrorsServiceCallableFactory.java
index 297eedb3bff8..b7f7858706a3 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonReportErrorsServiceCallableFactory.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonReportErrorsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonReportErrorsServiceCallableFactory
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonReportErrorsServiceStub.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonReportErrorsServiceStub.java
index f29859f86528..165f0e47f807 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonReportErrorsServiceStub.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/HttpJsonReportErrorsServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonReportErrorsServiceStub extends ReportErrorsServiceStub {
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ReportErrorsServiceStub.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ReportErrorsServiceStub.java
index 7f65f95bea5e..5d7138024c8e 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ReportErrorsServiceStub.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ReportErrorsServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.devtools.clouderrorreporting.v1beta1.ReportErrorEventRequest;
 import com.google.devtools.clouderrorreporting.v1beta1.ReportErrorEventResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ReportErrorsServiceStub implements BackgroundResource {
diff --git a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ReportErrorsServiceStubSettings.java b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ReportErrorsServiceStubSettings.java
index d5e59ca7c3aa..ca7916f9dfc2 100644
--- a/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ReportErrorsServiceStubSettings.java
+++ b/java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ReportErrorsServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-errorreporting/proto-google-cloud-error-reporting-v1beta1/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorGroupName.java b/java-errorreporting/proto-google-cloud-error-reporting-v1beta1/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorGroupName.java
index 3f199da6dcfa..0ef2f7d55ec0 100644
--- a/java-errorreporting/proto-google-cloud-error-reporting-v1beta1/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorGroupName.java
+++ b/java-errorreporting/proto-google-cloud-error-reporting-v1beta1/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ErrorGroupName implements ResourceName {
   private static final PathTemplate PROJECT_GROUP =
diff --git a/java-errorreporting/proto-google-cloud-error-reporting-v1beta1/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ProjectName.java b/java-errorreporting/proto-google-cloud-error-reporting-v1beta1/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ProjectName.java
index 9f3f915c1a2f..4f561f75903a 100644
--- a/java-errorreporting/proto-google-cloud-error-reporting-v1beta1/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ProjectName.java
+++ b/java-errorreporting/proto-google-cloud-error-reporting-v1beta1/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/EssentialContactsServiceClient.java b/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/EssentialContactsServiceClient.java
index f117a0291ca8..9065f869c4e0 100644
--- a/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/EssentialContactsServiceClient.java
+++ b/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/EssentialContactsServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -252,6 +253,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EssentialContactsServiceClient implements BackgroundResource {
   private final EssentialContactsServiceSettings settings;
diff --git a/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/EssentialContactsServiceSettings.java b/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/EssentialContactsServiceSettings.java
index 091af0c1c673..a1624ab9d3ce 100644
--- a/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/EssentialContactsServiceSettings.java
+++ b/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/EssentialContactsServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EssentialContactsServiceSettings
     extends ClientSettings<EssentialContactsServiceSettings> {
diff --git a/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/EssentialContactsServiceStub.java b/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/EssentialContactsServiceStub.java
index 10d6f3a69455..c74ed2185df9 100644
--- a/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/EssentialContactsServiceStub.java
+++ b/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/EssentialContactsServiceStub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.essentialcontacts.v1.UpdateContactRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EssentialContactsServiceStub implements BackgroundResource {
 
diff --git a/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/EssentialContactsServiceStubSettings.java b/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/EssentialContactsServiceStubSettings.java
index aa3a63cb4f27..67a561db3c7f 100644
--- a/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/EssentialContactsServiceStubSettings.java
+++ b/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/EssentialContactsServiceStubSettings.java
@@ -65,6 +65,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EssentialContactsServiceStubSettings
diff --git a/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/GrpcEssentialContactsServiceCallableFactory.java b/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/GrpcEssentialContactsServiceCallableFactory.java
index 91df28fbe977..488295da27af 100644
--- a/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/GrpcEssentialContactsServiceCallableFactory.java
+++ b/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/GrpcEssentialContactsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEssentialContactsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/GrpcEssentialContactsServiceStub.java b/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/GrpcEssentialContactsServiceStub.java
index da1453223559..9ee219ea1e51 100644
--- a/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/GrpcEssentialContactsServiceStub.java
+++ b/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/GrpcEssentialContactsServiceStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEssentialContactsServiceStub extends EssentialContactsServiceStub {
   private static final MethodDescriptor<CreateContactRequest, Contact>
diff --git a/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/HttpJsonEssentialContactsServiceCallableFactory.java b/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/HttpJsonEssentialContactsServiceCallableFactory.java
index abe6f4c3e03f..a6bfc8462957 100644
--- a/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/HttpJsonEssentialContactsServiceCallableFactory.java
+++ b/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/HttpJsonEssentialContactsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEssentialContactsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/HttpJsonEssentialContactsServiceStub.java b/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/HttpJsonEssentialContactsServiceStub.java
index 0e81f1923b99..01d2ab9615dc 100644
--- a/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/HttpJsonEssentialContactsServiceStub.java
+++ b/java-essential-contacts/google-cloud-essential-contacts/src/main/java/com/google/cloud/essentialcontacts/v1/stub/HttpJsonEssentialContactsServiceStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEssentialContactsServiceStub extends EssentialContactsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-essential-contacts/proto-google-cloud-essential-contacts-v1/src/main/java/com/google/cloud/essentialcontacts/v1/ContactName.java b/java-essential-contacts/proto-google-cloud-essential-contacts-v1/src/main/java/com/google/cloud/essentialcontacts/v1/ContactName.java
index 0f79769a24f2..c63b06c68d4a 100644
--- a/java-essential-contacts/proto-google-cloud-essential-contacts-v1/src/main/java/com/google/cloud/essentialcontacts/v1/ContactName.java
+++ b/java-essential-contacts/proto-google-cloud-essential-contacts-v1/src/main/java/com/google/cloud/essentialcontacts/v1/ContactName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ContactName implements ResourceName {
   private static final PathTemplate PROJECT_CONTACT =
diff --git a/java-essential-contacts/proto-google-cloud-essential-contacts-v1/src/main/java/com/google/cloud/essentialcontacts/v1/FolderName.java b/java-essential-contacts/proto-google-cloud-essential-contacts-v1/src/main/java/com/google/cloud/essentialcontacts/v1/FolderName.java
index 82a3bbc59b0e..a7fb9a036466 100644
--- a/java-essential-contacts/proto-google-cloud-essential-contacts-v1/src/main/java/com/google/cloud/essentialcontacts/v1/FolderName.java
+++ b/java-essential-contacts/proto-google-cloud-essential-contacts-v1/src/main/java/com/google/cloud/essentialcontacts/v1/FolderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderName implements ResourceName {
   private static final PathTemplate FOLDER =
diff --git a/java-essential-contacts/proto-google-cloud-essential-contacts-v1/src/main/java/com/google/cloud/essentialcontacts/v1/OrganizationName.java b/java-essential-contacts/proto-google-cloud-essential-contacts-v1/src/main/java/com/google/cloud/essentialcontacts/v1/OrganizationName.java
index f84dae3ccaa3..73adf5a51a4d 100644
--- a/java-essential-contacts/proto-google-cloud-essential-contacts-v1/src/main/java/com/google/cloud/essentialcontacts/v1/OrganizationName.java
+++ b/java-essential-contacts/proto-google-cloud-essential-contacts-v1/src/main/java/com/google/cloud/essentialcontacts/v1/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-essential-contacts/proto-google-cloud-essential-contacts-v1/src/main/java/com/google/cloud/essentialcontacts/v1/ProjectName.java b/java-essential-contacts/proto-google-cloud-essential-contacts-v1/src/main/java/com/google/cloud/essentialcontacts/v1/ProjectName.java
index 1ae132f5f206..0e8288c05e03 100644
--- a/java-essential-contacts/proto-google-cloud-essential-contacts-v1/src/main/java/com/google/cloud/essentialcontacts/v1/ProjectName.java
+++ b/java-essential-contacts/proto-google-cloud-essential-contacts-v1/src/main/java/com/google/cloud/essentialcontacts/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/PublisherClient.java b/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/PublisherClient.java
index 58a4d3c1a45d..16c79183a4b2 100644
--- a/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/PublisherClient.java
+++ b/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/PublisherClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -179,6 +180,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PublisherClient implements BackgroundResource {
   private final PublisherSettings settings;
diff --git a/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/PublisherSettings.java b/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/PublisherSettings.java
index 71ba9f0dfbd8..a8c170ff7723 100644
--- a/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/PublisherSettings.java
+++ b/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/PublisherSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PublisherSettings extends ClientSettings<PublisherSettings> {
 
diff --git a/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/GrpcPublisherCallableFactory.java b/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/GrpcPublisherCallableFactory.java
index 82d8eb888894..be7e93ac812a 100644
--- a/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/GrpcPublisherCallableFactory.java
+++ b/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/GrpcPublisherCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPublisherCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/GrpcPublisherStub.java b/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/GrpcPublisherStub.java
index 73256980aeda..d7ba06e32ba8 100644
--- a/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/GrpcPublisherStub.java
+++ b/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/GrpcPublisherStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPublisherStub extends PublisherStub {
   private static final MethodDescriptor<
diff --git a/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/HttpJsonPublisherCallableFactory.java b/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/HttpJsonPublisherCallableFactory.java
index 134261a6fc0b..ecf958018460 100644
--- a/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/HttpJsonPublisherCallableFactory.java
+++ b/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/HttpJsonPublisherCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPublisherCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/HttpJsonPublisherStub.java b/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/HttpJsonPublisherStub.java
index 7c1e7dd29fcd..7d5550c7e886 100644
--- a/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/HttpJsonPublisherStub.java
+++ b/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/HttpJsonPublisherStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPublisherStub extends PublisherStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/PublisherStub.java b/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/PublisherStub.java
index c1f3a9821163..aa46dc56769e 100644
--- a/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/PublisherStub.java
+++ b/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/PublisherStub.java
@@ -25,6 +25,7 @@
 import com.google.cloud.eventarc.publishing.v1.PublishRequest;
 import com.google.cloud.eventarc.publishing.v1.PublishResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PublisherStub implements BackgroundResource {
 
diff --git a/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/PublisherStubSettings.java b/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/PublisherStubSettings.java
index 760430ca67b6..3490bbf366d5 100644
--- a/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/PublisherStubSettings.java
+++ b/java-eventarc-publishing/google-cloud-eventarc-publishing/src/main/java/com/google/cloud/eventarc/publishing/v1/stub/PublisherStubSettings.java
@@ -50,6 +50,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PublisherStubSettings extends StubSettings<PublisherStubSettings> {
diff --git a/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/EventarcClient.java b/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/EventarcClient.java
index f08c1fbc1a50..1ed78af63302 100644
--- a/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/EventarcClient.java
+++ b/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/EventarcClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -967,6 +968,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EventarcClient implements BackgroundResource {
   private final EventarcSettings settings;
diff --git a/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/EventarcSettings.java b/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/EventarcSettings.java
index 19c38e213713..36d1ed08a80f 100644
--- a/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/EventarcSettings.java
+++ b/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/EventarcSettings.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EventarcSettings extends ClientSettings<EventarcSettings> {
 
diff --git a/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/EventarcStub.java b/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/EventarcStub.java
index 2d02ddcccabf..583729611b3a 100644
--- a/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/EventarcStub.java
+++ b/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/EventarcStub.java
@@ -100,6 +100,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EventarcStub implements BackgroundResource {
 
diff --git a/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/EventarcStubSettings.java b/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/EventarcStubSettings.java
index 62946bf34c0c..a71a1e30c09e 100644
--- a/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/EventarcStubSettings.java
+++ b/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/EventarcStubSettings.java
@@ -134,6 +134,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -209,6 +210,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EventarcStubSettings extends StubSettings<EventarcStubSettings> {
diff --git a/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/GrpcEventarcCallableFactory.java b/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/GrpcEventarcCallableFactory.java
index fe1b3d4bce62..15c6f354248c 100644
--- a/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/GrpcEventarcCallableFactory.java
+++ b/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/GrpcEventarcCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEventarcCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/GrpcEventarcStub.java b/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/GrpcEventarcStub.java
index 28fb9124a3c9..4ce5efe59256 100644
--- a/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/GrpcEventarcStub.java
+++ b/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/GrpcEventarcStub.java
@@ -109,6 +109,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEventarcStub extends EventarcStub {
   private static final MethodDescriptor<GetTriggerRequest, Trigger> getTriggerMethodDescriptor =
diff --git a/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/HttpJsonEventarcCallableFactory.java b/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/HttpJsonEventarcCallableFactory.java
index c7b3f54b8341..22dd9e5d72eb 100644
--- a/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/HttpJsonEventarcCallableFactory.java
+++ b/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/HttpJsonEventarcCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEventarcCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/HttpJsonEventarcStub.java b/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/HttpJsonEventarcStub.java
index 7d209b02372e..7ba53624e02c 100644
--- a/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/HttpJsonEventarcStub.java
+++ b/java-eventarc/google-cloud-eventarc/src/main/java/com/google/cloud/eventarc/v1/stub/HttpJsonEventarcStub.java
@@ -120,6 +120,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEventarcStub extends EventarcStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ChannelConnectionName.java b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ChannelConnectionName.java
index 88a97dd1e0d1..40815c2eff36 100644
--- a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ChannelConnectionName.java
+++ b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ChannelConnectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ChannelConnectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CHANNEL_CONNECTION =
diff --git a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ChannelName.java b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ChannelName.java
index b077bd831400..67227f8fb80a 100644
--- a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ChannelName.java
+++ b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ChannelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ChannelName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CHANNEL =
diff --git a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/EnrollmentName.java b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/EnrollmentName.java
index df737770092d..570f873a0ce3 100644
--- a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/EnrollmentName.java
+++ b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/EnrollmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EnrollmentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENROLLMENT =
diff --git a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/GoogleApiSourceName.java b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/GoogleApiSourceName.java
index 10bddbb08281..c2fccbb90c07 100644
--- a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/GoogleApiSourceName.java
+++ b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/GoogleApiSourceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GoogleApiSourceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GOOGLE_API_SOURCE =
diff --git a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/GoogleChannelConfigName.java b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/GoogleChannelConfigName.java
index 62f2d750b1da..9f74ca804a11 100644
--- a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/GoogleChannelConfigName.java
+++ b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/GoogleChannelConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GoogleChannelConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/LocationName.java b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/LocationName.java
index e5e9c8593cfb..0e97129be315 100644
--- a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/LocationName.java
+++ b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/MessageBusName.java b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/MessageBusName.java
index 510f0f50b6d2..f32a4d6ad89c 100644
--- a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/MessageBusName.java
+++ b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/MessageBusName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MessageBusName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MESSAGE_BUS =
diff --git a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/PipelineName.java b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/PipelineName.java
index 470d84616974..b270bb734391 100644
--- a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/PipelineName.java
+++ b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/PipelineName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PipelineName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PIPELINE =
diff --git a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ProviderName.java b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ProviderName.java
index 10b584762269..61552505fc84 100644
--- a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ProviderName.java
+++ b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ProviderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProviderName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PROVIDER =
diff --git a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/TriggerName.java b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/TriggerName.java
index b06580394d7d..e321428aaf21 100644
--- a/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/TriggerName.java
+++ b/java-eventarc/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/TriggerName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TriggerName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TRIGGER =
diff --git a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/CloudFilestoreManagerClient.java b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/CloudFilestoreManagerClient.java
index 937492b0b650..327ce26be2ae 100644
--- a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/CloudFilestoreManagerClient.java
+++ b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/CloudFilestoreManagerClient.java
@@ -39,6 +39,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -493,6 +494,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudFilestoreManagerClient implements BackgroundResource {
   private final CloudFilestoreManagerSettings settings;
diff --git a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/CloudFilestoreManagerSettings.java b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/CloudFilestoreManagerSettings.java
index 1e1196cb4bbd..38425479fdf4 100644
--- a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/CloudFilestoreManagerSettings.java
+++ b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/CloudFilestoreManagerSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudFilestoreManagerSettings extends ClientSettings<CloudFilestoreManagerSettings> {
 
diff --git a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/CloudFilestoreManagerStub.java b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/CloudFilestoreManagerStub.java
index 2b18941d6535..bd3218c7f801 100644
--- a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/CloudFilestoreManagerStub.java
+++ b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/CloudFilestoreManagerStub.java
@@ -52,6 +52,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CloudFilestoreManagerStub implements BackgroundResource {
 
diff --git a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/CloudFilestoreManagerStubSettings.java b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/CloudFilestoreManagerStubSettings.java
index 4e55b673ce62..8c5010f52c89 100644
--- a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/CloudFilestoreManagerStubSettings.java
+++ b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/CloudFilestoreManagerStubSettings.java
@@ -86,6 +86,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -164,6 +165,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CloudFilestoreManagerStubSettings
diff --git a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/GrpcCloudFilestoreManagerCallableFactory.java b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/GrpcCloudFilestoreManagerCallableFactory.java
index f5e39673b3b7..3c338b3475bc 100644
--- a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/GrpcCloudFilestoreManagerCallableFactory.java
+++ b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/GrpcCloudFilestoreManagerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudFilestoreManagerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/GrpcCloudFilestoreManagerStub.java b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/GrpcCloudFilestoreManagerStub.java
index d8734a5dbabf..c3052b1a4839 100644
--- a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/GrpcCloudFilestoreManagerStub.java
+++ b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/GrpcCloudFilestoreManagerStub.java
@@ -61,6 +61,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudFilestoreManagerStub extends CloudFilestoreManagerStub {
   private static final MethodDescriptor<ListInstancesRequest, ListInstancesResponse>
diff --git a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/HttpJsonCloudFilestoreManagerCallableFactory.java b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/HttpJsonCloudFilestoreManagerCallableFactory.java
index 73a71f282e05..0be7963249f0 100644
--- a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/HttpJsonCloudFilestoreManagerCallableFactory.java
+++ b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/HttpJsonCloudFilestoreManagerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudFilestoreManagerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/HttpJsonCloudFilestoreManagerStub.java b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/HttpJsonCloudFilestoreManagerStub.java
index a50b430ad2e4..d69c2b84988d 100644
--- a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/HttpJsonCloudFilestoreManagerStub.java
+++ b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/HttpJsonCloudFilestoreManagerStub.java
@@ -72,6 +72,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -79,6 +80,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudFilestoreManagerStub extends CloudFilestoreManagerStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/CloudFilestoreManagerClient.java b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/CloudFilestoreManagerClient.java
index 5dafcd0faefe..0077cdd08472 100644
--- a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/CloudFilestoreManagerClient.java
+++ b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/CloudFilestoreManagerClient.java
@@ -39,6 +39,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -591,6 +592,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudFilestoreManagerClient implements BackgroundResource {
diff --git a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/CloudFilestoreManagerSettings.java b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/CloudFilestoreManagerSettings.java
index 618d72f8375a..cafb7c775958 100644
--- a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/CloudFilestoreManagerSettings.java
+++ b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/CloudFilestoreManagerSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudFilestoreManagerSettings extends ClientSettings<CloudFilestoreManagerSettings> {
diff --git a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/CloudFilestoreManagerStub.java b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/CloudFilestoreManagerStub.java
index 896760683c51..af099f4cc996 100644
--- a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/CloudFilestoreManagerStub.java
+++ b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/CloudFilestoreManagerStub.java
@@ -61,6 +61,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CloudFilestoreManagerStub implements BackgroundResource {
diff --git a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/CloudFilestoreManagerStubSettings.java b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/CloudFilestoreManagerStubSettings.java
index 51c1ec5ee810..85427c0816c4 100644
--- a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/CloudFilestoreManagerStubSettings.java
+++ b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/CloudFilestoreManagerStubSettings.java
@@ -94,6 +94,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -172,6 +173,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/GrpcCloudFilestoreManagerCallableFactory.java b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/GrpcCloudFilestoreManagerCallableFactory.java
index 7ba63499b548..2b0775b45d6c 100644
--- a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/GrpcCloudFilestoreManagerCallableFactory.java
+++ b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/GrpcCloudFilestoreManagerCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudFilestoreManagerCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/GrpcCloudFilestoreManagerStub.java b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/GrpcCloudFilestoreManagerStub.java
index cda602e7b947..5f821014d900 100644
--- a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/GrpcCloudFilestoreManagerStub.java
+++ b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/GrpcCloudFilestoreManagerStub.java
@@ -70,6 +70,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudFilestoreManagerStub extends CloudFilestoreManagerStub {
diff --git a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/HttpJsonCloudFilestoreManagerCallableFactory.java b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/HttpJsonCloudFilestoreManagerCallableFactory.java
index 0e98f5026641..bba912f2e481 100644
--- a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/HttpJsonCloudFilestoreManagerCallableFactory.java
+++ b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/HttpJsonCloudFilestoreManagerCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudFilestoreManagerCallableFactory
diff --git a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/HttpJsonCloudFilestoreManagerStub.java b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/HttpJsonCloudFilestoreManagerStub.java
index b506342aa509..f8c78a91a5a6 100644
--- a/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/HttpJsonCloudFilestoreManagerStub.java
+++ b/java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/HttpJsonCloudFilestoreManagerStub.java
@@ -81,6 +81,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudFilestoreManagerStub extends CloudFilestoreManagerStub {
diff --git a/java-filestore/proto-google-cloud-filestore-v1/src/main/java/com/google/cloud/filestore/v1/BackupName.java b/java-filestore/proto-google-cloud-filestore-v1/src/main/java/com/google/cloud/filestore/v1/BackupName.java
index a07c9149c5ab..a4950e31d9e6 100644
--- a/java-filestore/proto-google-cloud-filestore-v1/src/main/java/com/google/cloud/filestore/v1/BackupName.java
+++ b/java-filestore/proto-google-cloud-filestore-v1/src/main/java/com/google/cloud/filestore/v1/BackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP =
diff --git a/java-filestore/proto-google-cloud-filestore-v1/src/main/java/com/google/cloud/filestore/v1/InstanceName.java b/java-filestore/proto-google-cloud-filestore-v1/src/main/java/com/google/cloud/filestore/v1/InstanceName.java
index 8f3aa316fa18..0effb7cdecd5 100644
--- a/java-filestore/proto-google-cloud-filestore-v1/src/main/java/com/google/cloud/filestore/v1/InstanceName.java
+++ b/java-filestore/proto-google-cloud-filestore-v1/src/main/java/com/google/cloud/filestore/v1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-filestore/proto-google-cloud-filestore-v1/src/main/java/com/google/cloud/filestore/v1/LocationName.java b/java-filestore/proto-google-cloud-filestore-v1/src/main/java/com/google/cloud/filestore/v1/LocationName.java
index f4b91b0e989f..5a12f7a391da 100644
--- a/java-filestore/proto-google-cloud-filestore-v1/src/main/java/com/google/cloud/filestore/v1/LocationName.java
+++ b/java-filestore/proto-google-cloud-filestore-v1/src/main/java/com/google/cloud/filestore/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-filestore/proto-google-cloud-filestore-v1/src/main/java/com/google/cloud/filestore/v1/SnapshotName.java b/java-filestore/proto-google-cloud-filestore-v1/src/main/java/com/google/cloud/filestore/v1/SnapshotName.java
index ef6f03d33e07..c84e68301837 100644
--- a/java-filestore/proto-google-cloud-filestore-v1/src/main/java/com/google/cloud/filestore/v1/SnapshotName.java
+++ b/java-filestore/proto-google-cloud-filestore-v1/src/main/java/com/google/cloud/filestore/v1/SnapshotName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SnapshotName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_SNAPSHOT =
diff --git a/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/BackupName.java b/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/BackupName.java
index 7a266110baf7..b11ec4a4b36e 100644
--- a/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/BackupName.java
+++ b/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/BackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP =
diff --git a/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/InstanceName.java b/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/InstanceName.java
index 4ff1e9ee85fe..3f7c3d58a30e 100644
--- a/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/InstanceName.java
+++ b/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/LocationName.java b/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/LocationName.java
index 4a96992e6805..027106f76843 100644
--- a/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/LocationName.java
+++ b/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/ShareName.java b/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/ShareName.java
index eabd21c51dab..e88a7e6b8487 100644
--- a/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/ShareName.java
+++ b/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/ShareName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ShareName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_SHARE =
diff --git a/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/SnapshotName.java b/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/SnapshotName.java
index 3accd5abb87b..cb2450ad2872 100644
--- a/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/SnapshotName.java
+++ b/java-filestore/proto-google-cloud-filestore-v1beta1/src/main/java/com/google/cloud/filestore/v1beta1/SnapshotName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SnapshotName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_SNAPSHOT =
diff --git a/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/AMLClient.java b/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/AMLClient.java
index d13fe5341048..e25c69077561 100644
--- a/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/AMLClient.java
+++ b/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/AMLClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -902,6 +903,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AMLClient implements BackgroundResource {
   private final AMLSettings settings;
diff --git a/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/AMLSettings.java b/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/AMLSettings.java
index 567e25440459..96e866b3a347 100644
--- a/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/AMLSettings.java
+++ b/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/AMLSettings.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AMLSettings extends ClientSettings<AMLSettings> {
 
diff --git a/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/AMLStub.java b/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/AMLStub.java
index 022c819811da..29efed1077e3 100644
--- a/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/AMLStub.java
+++ b/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/AMLStub.java
@@ -95,6 +95,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AMLStub implements BackgroundResource {
 
diff --git a/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/AMLStubSettings.java b/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/AMLStubSettings.java
index cad0b84e2c8b..eef8a60df478 100644
--- a/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/AMLStubSettings.java
+++ b/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/AMLStubSettings.java
@@ -129,6 +129,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -205,6 +206,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AMLStubSettings extends StubSettings<AMLStubSettings> {
diff --git a/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/GrpcAMLCallableFactory.java b/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/GrpcAMLCallableFactory.java
index 68b10ec451c0..e9f4f56135c6 100644
--- a/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/GrpcAMLCallableFactory.java
+++ b/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/GrpcAMLCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAMLCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/GrpcAMLStub.java b/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/GrpcAMLStub.java
index 297e7400e7ff..643f95d1b332 100644
--- a/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/GrpcAMLStub.java
+++ b/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/GrpcAMLStub.java
@@ -104,6 +104,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAMLStub extends AMLStub {
   private static final MethodDescriptor<ListInstancesRequest, ListInstancesResponse>
diff --git a/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/HttpJsonAMLCallableFactory.java b/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/HttpJsonAMLCallableFactory.java
index 89282ca113f2..0a5a7b3999d3 100644
--- a/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/HttpJsonAMLCallableFactory.java
+++ b/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/HttpJsonAMLCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAMLCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/HttpJsonAMLStub.java b/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/HttpJsonAMLStub.java
index 1e35f76cf573..dd5127c716a6 100644
--- a/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/HttpJsonAMLStub.java
+++ b/java-financialservices/google-cloud-financialservices/src/main/java/com/google/cloud/financialservices/v1/stub/HttpJsonAMLStub.java
@@ -115,6 +115,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAMLStub extends AMLStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/BacktestResultName.java b/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/BacktestResultName.java
index 3c581d0c7536..2b0e09087b70 100644
--- a/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/BacktestResultName.java
+++ b/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/BacktestResultName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BacktestResultName implements ResourceName {
   private static final PathTemplate PROJECT_NUM_LOCATION_INSTANCE_BACKTEST_RESULT =
diff --git a/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/DatasetName.java b/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/DatasetName.java
index 1cd32c442d20..c0db8b7fb244 100644
--- a/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/DatasetName.java
+++ b/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/DatasetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatasetName implements ResourceName {
   private static final PathTemplate PROJECT_NUM_LOCATION_INSTANCE_DATASET =
diff --git a/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/EngineConfigName.java b/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/EngineConfigName.java
index 1635fc52d654..d80e703b1e2b 100644
--- a/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/EngineConfigName.java
+++ b/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/EngineConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EngineConfigName implements ResourceName {
   private static final PathTemplate PROJECT_NUM_LOCATION_INSTANCE_ENGINE_CONFIG =
diff --git a/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/EngineVersionName.java b/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/EngineVersionName.java
index 4b5c6a39c36c..cf94d3b4b26a 100644
--- a/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/EngineVersionName.java
+++ b/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/EngineVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EngineVersionName implements ResourceName {
   private static final PathTemplate PROJECT_NUM_LOCATION_INSTANCE_ENGINE_VERSION =
diff --git a/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/InstanceName.java b/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/InstanceName.java
index 5c2d27d5a442..3a5e8217385e 100644
--- a/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/InstanceName.java
+++ b/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/LocationName.java b/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/LocationName.java
index d4257aac052c..e5dee4299c91 100644
--- a/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/LocationName.java
+++ b/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/ModelName.java b/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/ModelName.java
index e001c2a7f58b..ffc3984d756c 100644
--- a/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/ModelName.java
+++ b/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/ModelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelName implements ResourceName {
   private static final PathTemplate PROJECT_NUM_LOCATION_INSTANCE_MODEL =
diff --git a/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/PredictionResultName.java b/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/PredictionResultName.java
index 5dd569641fe2..1f5295984c08 100644
--- a/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/PredictionResultName.java
+++ b/java-financialservices/proto-google-cloud-financialservices-v1/src/main/java/com/google/cloud/financialservices/v1/PredictionResultName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PredictionResultName implements ResourceName {
   private static final PathTemplate PROJECT_NUM_LOCATION_INSTANCE_PREDICTION_RESULT =
diff --git a/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/FirestoreAdminClient.java b/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/FirestoreAdminClient.java
index 276663bce41b..c6e9eb430d53 100644
--- a/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/FirestoreAdminClient.java
+++ b/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/FirestoreAdminClient.java
@@ -103,6 +103,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -829,6 +830,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FirestoreAdminClient implements BackgroundResource {
   private final FirestoreAdminSettings settings;
diff --git a/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/FirestoreAdminSettings.java b/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/FirestoreAdminSettings.java
index 37c6bca6cb83..b2fc81ce2c42 100644
--- a/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/FirestoreAdminSettings.java
+++ b/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/FirestoreAdminSettings.java
@@ -94,6 +94,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -171,6 +172,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FirestoreAdminSettings extends ClientSettings<FirestoreAdminSettings> {
 
diff --git a/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/FirestoreAdminStub.java b/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/FirestoreAdminStub.java
index b332caa5251b..815b293a51f4 100644
--- a/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/FirestoreAdminStub.java
+++ b/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/FirestoreAdminStub.java
@@ -82,6 +82,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FirestoreAdminStub implements BackgroundResource {
 
diff --git a/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/FirestoreAdminStubSettings.java b/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/FirestoreAdminStubSettings.java
index cf29849bce9d..10eb4c484e47 100644
--- a/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/FirestoreAdminStubSettings.java
+++ b/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/FirestoreAdminStubSettings.java
@@ -116,6 +116,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -193,6 +194,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FirestoreAdminStubSettings extends StubSettings<FirestoreAdminStubSettings> {
diff --git a/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/GrpcFirestoreAdminCallableFactory.java b/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/GrpcFirestoreAdminCallableFactory.java
index 692755212d88..dfbb6cb1e11f 100644
--- a/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/GrpcFirestoreAdminCallableFactory.java
+++ b/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/GrpcFirestoreAdminCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFirestoreAdminCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/GrpcFirestoreAdminStub.java b/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/GrpcFirestoreAdminStub.java
index b1efe5693c70..3c9d1435ea0f 100644
--- a/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/GrpcFirestoreAdminStub.java
+++ b/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/GrpcFirestoreAdminStub.java
@@ -92,6 +92,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFirestoreAdminStub extends FirestoreAdminStub {
   private static final MethodDescriptor<CreateIndexRequest, Operation> createIndexMethodDescriptor =
diff --git a/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/HttpJsonFirestoreAdminCallableFactory.java b/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/HttpJsonFirestoreAdminCallableFactory.java
index bcaa17ac474a..afb9bffd2968 100644
--- a/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/HttpJsonFirestoreAdminCallableFactory.java
+++ b/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/HttpJsonFirestoreAdminCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFirestoreAdminCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/HttpJsonFirestoreAdminStub.java b/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/HttpJsonFirestoreAdminStub.java
index 497643df4e47..964e13a8364e 100644
--- a/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/HttpJsonFirestoreAdminStub.java
+++ b/java-firestore/google-cloud-firestore-admin/src/main/java/com/google/cloud/firestore/v1/stub/HttpJsonFirestoreAdminStub.java
@@ -103,6 +103,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFirestoreAdminStub extends FirestoreAdminStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/FirestoreClient.java b/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/FirestoreClient.java
index 7f309ee9819c..3219349bad08 100644
--- a/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/FirestoreClient.java
+++ b/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/FirestoreClient.java
@@ -68,6 +68,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -409,6 +410,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FirestoreClient implements BackgroundResource {
   private final FirestoreSettings settings;
diff --git a/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/FirestoreSettings.java b/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/FirestoreSettings.java
index cfffc9f8857f..bbe14f33a38c 100644
--- a/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/FirestoreSettings.java
+++ b/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/FirestoreSettings.java
@@ -69,6 +69,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FirestoreSettings extends ClientSettings<FirestoreSettings> {
 
diff --git a/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/FirestoreStub.java b/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/FirestoreStub.java
index cda06e152dda..4864f68c65c7 100644
--- a/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/FirestoreStub.java
+++ b/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/FirestoreStub.java
@@ -56,6 +56,7 @@
 import com.google.firestore.v1.WriteResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FirestoreStub implements BackgroundResource {
 
diff --git a/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/FirestoreStubSettings.java b/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/FirestoreStubSettings.java
index e0fcc7b2bca6..5a4e8bc19f28 100644
--- a/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/FirestoreStubSettings.java
+++ b/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/FirestoreStubSettings.java
@@ -89,6 +89,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -139,6 +140,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FirestoreStubSettings extends StubSettings<FirestoreStubSettings> {
diff --git a/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/GrpcFirestoreCallableFactory.java b/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/GrpcFirestoreCallableFactory.java
index e38803cbab68..58ee22ef8ac2 100644
--- a/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/GrpcFirestoreCallableFactory.java
+++ b/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/GrpcFirestoreCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFirestoreCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/GrpcFirestoreStub.java b/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/GrpcFirestoreStub.java
index 3824d24dbdfb..40d3da13c63c 100644
--- a/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/GrpcFirestoreStub.java
+++ b/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/GrpcFirestoreStub.java
@@ -67,6 +67,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFirestoreStub extends FirestoreStub {
   private static final MethodDescriptor<GetDocumentRequest, Document> getDocumentMethodDescriptor =
diff --git a/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/HttpJsonFirestoreCallableFactory.java b/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/HttpJsonFirestoreCallableFactory.java
index c1ee72f3746d..1eaf2292fa99 100644
--- a/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/HttpJsonFirestoreCallableFactory.java
+++ b/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/HttpJsonFirestoreCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFirestoreCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/HttpJsonFirestoreStub.java b/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/HttpJsonFirestoreStub.java
index 148c9c0d5386..9f790594c66c 100644
--- a/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/HttpJsonFirestoreStub.java
+++ b/java-firestore/google-cloud-firestore/src/main/java/com/google/cloud/firestore/v1/stub/HttpJsonFirestoreStub.java
@@ -74,6 +74,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFirestoreStub extends FirestoreStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/BackupName.java b/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/BackupName.java
index d3015ee49412..4f82cb097536 100644
--- a/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/BackupName.java
+++ b/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/BackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP =
diff --git a/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/BackupScheduleName.java b/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/BackupScheduleName.java
index 2408242ef763..b52c1caa1fb8 100644
--- a/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/BackupScheduleName.java
+++ b/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/BackupScheduleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupScheduleName implements ResourceName {
   private static final PathTemplate PROJECT_DATABASE_BACKUP_SCHEDULE =
diff --git a/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/CollectionGroupName.java b/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/CollectionGroupName.java
index 7800401244b1..52175d243962 100644
--- a/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/CollectionGroupName.java
+++ b/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/CollectionGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CollectionGroupName implements ResourceName {
   private static final PathTemplate PROJECT_DATABASE_COLLECTION =
diff --git a/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/DatabaseName.java b/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/DatabaseName.java
index 3e680f233d62..7387fb28c705 100644
--- a/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/DatabaseName.java
+++ b/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/DatabaseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatabaseName implements ResourceName {
   private static final PathTemplate PROJECT_DATABASE =
diff --git a/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/FieldName.java b/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/FieldName.java
index 8458fce1e3ba..cf89592e2082 100644
--- a/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/FieldName.java
+++ b/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/FieldName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FieldName implements ResourceName {
   private static final PathTemplate PROJECT_DATABASE_COLLECTION_FIELD =
diff --git a/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/IndexName.java b/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/IndexName.java
index 4ed08a62b4fd..910691f4d7e2 100644
--- a/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/IndexName.java
+++ b/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/IndexName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IndexName implements ResourceName {
   private static final PathTemplate PROJECT_DATABASE_COLLECTION_INDEX =
diff --git a/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/LocationName.java b/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/LocationName.java
index 6b0e73acfbf1..af175ebf9b53 100644
--- a/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/LocationName.java
+++ b/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/ProjectName.java b/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/ProjectName.java
index d5a9e503c54b..de05606e664b 100644
--- a/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/ProjectName.java
+++ b/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/UserCredsName.java b/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/UserCredsName.java
index fdd08532a0b9..e787c4fe0aa3 100644
--- a/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/UserCredsName.java
+++ b/java-firestore/proto-google-cloud-firestore-admin-v1/src/main/java/com/google/firestore/admin/v1/UserCredsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserCredsName implements ResourceName {
   private static final PathTemplate PROJECT_DATABASE_USER_CREDS =
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/CloudFunctionsServiceClient.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/CloudFunctionsServiceClient.java
index d97056b9b744..ac274451de0d 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/CloudFunctionsServiceClient.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/CloudFunctionsServiceClient.java
@@ -45,6 +45,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -347,6 +348,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudFunctionsServiceClient implements BackgroundResource {
   private final CloudFunctionsServiceSettings settings;
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/CloudFunctionsServiceSettings.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/CloudFunctionsServiceSettings.java
index c16d2d454a7b..3ccc695e2800 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/CloudFunctionsServiceSettings.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/CloudFunctionsServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudFunctionsServiceSettings extends ClientSettings<CloudFunctionsServiceSettings> {
 
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/CloudFunctionsServiceStub.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/CloudFunctionsServiceStub.java
index 40a774a0f40c..ef87077cd20e 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/CloudFunctionsServiceStub.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/CloudFunctionsServiceStub.java
@@ -47,6 +47,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CloudFunctionsServiceStub implements BackgroundResource {
 
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/CloudFunctionsServiceStubSettings.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/CloudFunctionsServiceStubSettings.java
index b2e8068c1f34..038236b4282f 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/CloudFunctionsServiceStubSettings.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/CloudFunctionsServiceStubSettings.java
@@ -82,6 +82,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -161,6 +162,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CloudFunctionsServiceStubSettings
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/GrpcCloudFunctionsServiceCallableFactory.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/GrpcCloudFunctionsServiceCallableFactory.java
index f2b29573a43b..4912c31aae94 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/GrpcCloudFunctionsServiceCallableFactory.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/GrpcCloudFunctionsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudFunctionsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/GrpcCloudFunctionsServiceStub.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/GrpcCloudFunctionsServiceStub.java
index 0c1eeda9ed6a..4d66ae781d9d 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/GrpcCloudFunctionsServiceStub.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/GrpcCloudFunctionsServiceStub.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudFunctionsServiceStub extends CloudFunctionsServiceStub {
   private static final MethodDescriptor<ListFunctionsRequest, ListFunctionsResponse>
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/HttpJsonCloudFunctionsServiceCallableFactory.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/HttpJsonCloudFunctionsServiceCallableFactory.java
index 1ba81ce18d13..6a03ae054521 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/HttpJsonCloudFunctionsServiceCallableFactory.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/HttpJsonCloudFunctionsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudFunctionsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/HttpJsonCloudFunctionsServiceStub.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/HttpJsonCloudFunctionsServiceStub.java
index 0e827005bf41..80688dce4767 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/HttpJsonCloudFunctionsServiceStub.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v1/stub/HttpJsonCloudFunctionsServiceStub.java
@@ -67,6 +67,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudFunctionsServiceStub extends CloudFunctionsServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/FunctionServiceClient.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/FunctionServiceClient.java
index 1651f03cef59..5172e6d36158 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/FunctionServiceClient.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/FunctionServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -357,6 +358,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FunctionServiceClient implements BackgroundResource {
   private final FunctionServiceSettings settings;
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/FunctionServiceSettings.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/FunctionServiceSettings.java
index 0b6a4e18edda..85a972082f8b 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/FunctionServiceSettings.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/FunctionServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FunctionServiceSettings extends ClientSettings<FunctionServiceSettings> {
 
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/FunctionServiceStub.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/FunctionServiceStub.java
index 52436c692331..efba3bf6a0bc 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/FunctionServiceStub.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/FunctionServiceStub.java
@@ -47,6 +47,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FunctionServiceStub implements BackgroundResource {
 
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/FunctionServiceStubSettings.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/FunctionServiceStubSettings.java
index bd49ebbb330b..a5cbc513fddb 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/FunctionServiceStubSettings.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/FunctionServiceStubSettings.java
@@ -82,6 +82,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -160,6 +161,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FunctionServiceStubSettings extends StubSettings<FunctionServiceStubSettings> {
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/GrpcFunctionServiceCallableFactory.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/GrpcFunctionServiceCallableFactory.java
index f88e032ff067..fb460d25de36 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/GrpcFunctionServiceCallableFactory.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/GrpcFunctionServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFunctionServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/GrpcFunctionServiceStub.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/GrpcFunctionServiceStub.java
index 20e2f29e4664..69ba70cc1f78 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/GrpcFunctionServiceStub.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/GrpcFunctionServiceStub.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFunctionServiceStub extends FunctionServiceStub {
   private static final MethodDescriptor<GetFunctionRequest, Function> getFunctionMethodDescriptor =
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/HttpJsonFunctionServiceCallableFactory.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/HttpJsonFunctionServiceCallableFactory.java
index 8e961b20bff6..dd5d6ebffd7c 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/HttpJsonFunctionServiceCallableFactory.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/HttpJsonFunctionServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFunctionServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/HttpJsonFunctionServiceStub.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/HttpJsonFunctionServiceStub.java
index 4f3bbab6b420..a43cc9a5c512 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/HttpJsonFunctionServiceStub.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2/stub/HttpJsonFunctionServiceStub.java
@@ -67,6 +67,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFunctionServiceStub extends FunctionServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/FunctionServiceClient.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/FunctionServiceClient.java
index fe1375a2a4f7..c504480b3349 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/FunctionServiceClient.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/FunctionServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -357,6 +358,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FunctionServiceClient implements BackgroundResource {
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/FunctionServiceSettings.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/FunctionServiceSettings.java
index 09ea53472908..cf7560d8f1f7 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/FunctionServiceSettings.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/FunctionServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FunctionServiceSettings extends ClientSettings<FunctionServiceSettings> {
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/FunctionServiceStub.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/FunctionServiceStub.java
index 142f9f62d3d7..ea26f505841f 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/FunctionServiceStub.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/FunctionServiceStub.java
@@ -48,6 +48,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class FunctionServiceStub implements BackgroundResource {
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/FunctionServiceStubSettings.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/FunctionServiceStubSettings.java
index ba8d218eed9f..60677862a137 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/FunctionServiceStubSettings.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/FunctionServiceStubSettings.java
@@ -82,6 +82,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -160,6 +161,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/GrpcFunctionServiceCallableFactory.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/GrpcFunctionServiceCallableFactory.java
index f8beca9f8762..7f1bc3b3a6ec 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/GrpcFunctionServiceCallableFactory.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/GrpcFunctionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFunctionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/GrpcFunctionServiceStub.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/GrpcFunctionServiceStub.java
index 9c97ccc212e6..31d38cefc685 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/GrpcFunctionServiceStub.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/GrpcFunctionServiceStub.java
@@ -57,6 +57,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFunctionServiceStub extends FunctionServiceStub {
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/HttpJsonFunctionServiceCallableFactory.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/HttpJsonFunctionServiceCallableFactory.java
index 939029b9c527..1b217b945fc3 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/HttpJsonFunctionServiceCallableFactory.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/HttpJsonFunctionServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonFunctionServiceCallableFactory
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/HttpJsonFunctionServiceStub.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/HttpJsonFunctionServiceStub.java
index 69a65771d444..d26312012131 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/HttpJsonFunctionServiceStub.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2alpha/stub/HttpJsonFunctionServiceStub.java
@@ -68,6 +68,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonFunctionServiceStub extends FunctionServiceStub {
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/FunctionServiceClient.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/FunctionServiceClient.java
index c3a3857e4f0e..deaf0b077c9e 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/FunctionServiceClient.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/FunctionServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -357,6 +358,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FunctionServiceClient implements BackgroundResource {
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/FunctionServiceSettings.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/FunctionServiceSettings.java
index 14524c0ec68b..539aa3457a0e 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/FunctionServiceSettings.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/FunctionServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FunctionServiceSettings extends ClientSettings<FunctionServiceSettings> {
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/FunctionServiceStub.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/FunctionServiceStub.java
index e0f1f3c5bd62..204f69ec354e 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/FunctionServiceStub.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/FunctionServiceStub.java
@@ -48,6 +48,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class FunctionServiceStub implements BackgroundResource {
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/FunctionServiceStubSettings.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/FunctionServiceStubSettings.java
index d7835918b9c0..cfc94217b952 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/FunctionServiceStubSettings.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/FunctionServiceStubSettings.java
@@ -82,6 +82,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -160,6 +161,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/GrpcFunctionServiceCallableFactory.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/GrpcFunctionServiceCallableFactory.java
index ef1c207dab5e..11dfddfc4eb0 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/GrpcFunctionServiceCallableFactory.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/GrpcFunctionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFunctionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/GrpcFunctionServiceStub.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/GrpcFunctionServiceStub.java
index e762ab613c26..c751e67637d4 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/GrpcFunctionServiceStub.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/GrpcFunctionServiceStub.java
@@ -57,6 +57,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFunctionServiceStub extends FunctionServiceStub {
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/HttpJsonFunctionServiceCallableFactory.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/HttpJsonFunctionServiceCallableFactory.java
index 655a49634626..6581962e9035 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/HttpJsonFunctionServiceCallableFactory.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/HttpJsonFunctionServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonFunctionServiceCallableFactory
diff --git a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/HttpJsonFunctionServiceStub.java b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/HttpJsonFunctionServiceStub.java
index a49c4a023cb9..48a995151019 100644
--- a/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/HttpJsonFunctionServiceStub.java
+++ b/java-functions/google-cloud-functions/src/main/java/com/google/cloud/functions/v2beta/stub/HttpJsonFunctionServiceStub.java
@@ -68,6 +68,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonFunctionServiceStub extends FunctionServiceStub {
diff --git a/java-functions/proto-google-cloud-functions-v1/src/main/java/com/google/cloud/functions/v1/CloudFunctionName.java b/java-functions/proto-google-cloud-functions-v1/src/main/java/com/google/cloud/functions/v1/CloudFunctionName.java
index fd7a921da41f..bc557c0a0106 100644
--- a/java-functions/proto-google-cloud-functions-v1/src/main/java/com/google/cloud/functions/v1/CloudFunctionName.java
+++ b/java-functions/proto-google-cloud-functions-v1/src/main/java/com/google/cloud/functions/v1/CloudFunctionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudFunctionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FUNCTION =
diff --git a/java-functions/proto-google-cloud-functions-v1/src/main/java/com/google/cloud/functions/v1/CryptoKeyName.java b/java-functions/proto-google-cloud-functions-v1/src/main/java/com/google/cloud/functions/v1/CryptoKeyName.java
index edbde8f181c9..8f3e2a8b8d27 100644
--- a/java-functions/proto-google-cloud-functions-v1/src/main/java/com/google/cloud/functions/v1/CryptoKeyName.java
+++ b/java-functions/proto-google-cloud-functions-v1/src/main/java/com/google/cloud/functions/v1/CryptoKeyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CryptoKeyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_KEY_RING_CRYPTO_KEY =
diff --git a/java-functions/proto-google-cloud-functions-v1/src/main/java/com/google/cloud/functions/v1/LocationName.java b/java-functions/proto-google-cloud-functions-v1/src/main/java/com/google/cloud/functions/v1/LocationName.java
index c3c306ce78da..396ab3ca971b 100644
--- a/java-functions/proto-google-cloud-functions-v1/src/main/java/com/google/cloud/functions/v1/LocationName.java
+++ b/java-functions/proto-google-cloud-functions-v1/src/main/java/com/google/cloud/functions/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-functions/proto-google-cloud-functions-v2/src/main/java/com/google/cloud/functions/v2/CryptoKeyName.java b/java-functions/proto-google-cloud-functions-v2/src/main/java/com/google/cloud/functions/v2/CryptoKeyName.java
index 766b5bdfe32e..2512d68e5a8b 100644
--- a/java-functions/proto-google-cloud-functions-v2/src/main/java/com/google/cloud/functions/v2/CryptoKeyName.java
+++ b/java-functions/proto-google-cloud-functions-v2/src/main/java/com/google/cloud/functions/v2/CryptoKeyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CryptoKeyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_KEY_RING_CRYPTO_KEY =
diff --git a/java-functions/proto-google-cloud-functions-v2/src/main/java/com/google/cloud/functions/v2/FunctionName.java b/java-functions/proto-google-cloud-functions-v2/src/main/java/com/google/cloud/functions/v2/FunctionName.java
index 2897fc91808f..c7e3eea6f60b 100644
--- a/java-functions/proto-google-cloud-functions-v2/src/main/java/com/google/cloud/functions/v2/FunctionName.java
+++ b/java-functions/proto-google-cloud-functions-v2/src/main/java/com/google/cloud/functions/v2/FunctionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FunctionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FUNCTION =
diff --git a/java-functions/proto-google-cloud-functions-v2/src/main/java/com/google/cloud/functions/v2/LocationName.java b/java-functions/proto-google-cloud-functions-v2/src/main/java/com/google/cloud/functions/v2/LocationName.java
index f111199587c1..de9e7a37d6f1 100644
--- a/java-functions/proto-google-cloud-functions-v2/src/main/java/com/google/cloud/functions/v2/LocationName.java
+++ b/java-functions/proto-google-cloud-functions-v2/src/main/java/com/google/cloud/functions/v2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-functions/proto-google-cloud-functions-v2alpha/src/main/java/com/google/cloud/functions/v2alpha/CryptoKeyName.java b/java-functions/proto-google-cloud-functions-v2alpha/src/main/java/com/google/cloud/functions/v2alpha/CryptoKeyName.java
index a3374a0bd222..6cb273879def 100644
--- a/java-functions/proto-google-cloud-functions-v2alpha/src/main/java/com/google/cloud/functions/v2alpha/CryptoKeyName.java
+++ b/java-functions/proto-google-cloud-functions-v2alpha/src/main/java/com/google/cloud/functions/v2alpha/CryptoKeyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CryptoKeyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_KEY_RING_CRYPTO_KEY =
diff --git a/java-functions/proto-google-cloud-functions-v2alpha/src/main/java/com/google/cloud/functions/v2alpha/FunctionName.java b/java-functions/proto-google-cloud-functions-v2alpha/src/main/java/com/google/cloud/functions/v2alpha/FunctionName.java
index 97f0d367467d..3aa40f8c85e6 100644
--- a/java-functions/proto-google-cloud-functions-v2alpha/src/main/java/com/google/cloud/functions/v2alpha/FunctionName.java
+++ b/java-functions/proto-google-cloud-functions-v2alpha/src/main/java/com/google/cloud/functions/v2alpha/FunctionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FunctionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FUNCTION =
diff --git a/java-functions/proto-google-cloud-functions-v2alpha/src/main/java/com/google/cloud/functions/v2alpha/LocationName.java b/java-functions/proto-google-cloud-functions-v2alpha/src/main/java/com/google/cloud/functions/v2alpha/LocationName.java
index a1b5f33c1c4e..14992d8ad585 100644
--- a/java-functions/proto-google-cloud-functions-v2alpha/src/main/java/com/google/cloud/functions/v2alpha/LocationName.java
+++ b/java-functions/proto-google-cloud-functions-v2alpha/src/main/java/com/google/cloud/functions/v2alpha/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-functions/proto-google-cloud-functions-v2beta/src/main/java/com/google/cloud/functions/v2beta/CryptoKeyName.java b/java-functions/proto-google-cloud-functions-v2beta/src/main/java/com/google/cloud/functions/v2beta/CryptoKeyName.java
index 9bf2d4e57cd4..6e48c98b7121 100644
--- a/java-functions/proto-google-cloud-functions-v2beta/src/main/java/com/google/cloud/functions/v2beta/CryptoKeyName.java
+++ b/java-functions/proto-google-cloud-functions-v2beta/src/main/java/com/google/cloud/functions/v2beta/CryptoKeyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CryptoKeyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_KEY_RING_CRYPTO_KEY =
diff --git a/java-functions/proto-google-cloud-functions-v2beta/src/main/java/com/google/cloud/functions/v2beta/FunctionName.java b/java-functions/proto-google-cloud-functions-v2beta/src/main/java/com/google/cloud/functions/v2beta/FunctionName.java
index 30cc619cab50..4bdd376b7974 100644
--- a/java-functions/proto-google-cloud-functions-v2beta/src/main/java/com/google/cloud/functions/v2beta/FunctionName.java
+++ b/java-functions/proto-google-cloud-functions-v2beta/src/main/java/com/google/cloud/functions/v2beta/FunctionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FunctionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FUNCTION =
diff --git a/java-functions/proto-google-cloud-functions-v2beta/src/main/java/com/google/cloud/functions/v2beta/LocationName.java b/java-functions/proto-google-cloud-functions-v2beta/src/main/java/com/google/cloud/functions/v2beta/LocationName.java
index ea6cc2e81387..f91d263d8a76 100644
--- a/java-functions/proto-google-cloud-functions-v2beta/src/main/java/com/google/cloud/functions/v2beta/LocationName.java
+++ b/java-functions/proto-google-cloud-functions-v2beta/src/main/java/com/google/cloud/functions/v2beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/GDCHardwareManagementClient.java b/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/GDCHardwareManagementClient.java
index 5b823a7daa04..ccbb57a7d67a 100644
--- a/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/GDCHardwareManagementClient.java
+++ b/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/GDCHardwareManagementClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -882,6 +883,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GDCHardwareManagementClient implements BackgroundResource {
diff --git a/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/GDCHardwareManagementSettings.java b/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/GDCHardwareManagementSettings.java
index 2daa333f3ce2..2916be006c50 100644
--- a/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/GDCHardwareManagementSettings.java
+++ b/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/GDCHardwareManagementSettings.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -128,6 +129,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GDCHardwareManagementSettings extends ClientSettings<GDCHardwareManagementSettings> {
diff --git a/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/GDCHardwareManagementStub.java b/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/GDCHardwareManagementStub.java
index 76e7e28963dc..698fb56e284b 100644
--- a/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/GDCHardwareManagementStub.java
+++ b/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/GDCHardwareManagementStub.java
@@ -92,6 +92,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class GDCHardwareManagementStub implements BackgroundResource {
diff --git a/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/GDCHardwareManagementStubSettings.java b/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/GDCHardwareManagementStubSettings.java
index ef22a92d7b95..be91f4d333a2 100644
--- a/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/GDCHardwareManagementStubSettings.java
+++ b/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/GDCHardwareManagementStubSettings.java
@@ -125,6 +125,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -204,6 +205,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/GrpcGDCHardwareManagementCallableFactory.java b/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/GrpcGDCHardwareManagementCallableFactory.java
index 6d78d6166f40..bbedd5d318ba 100644
--- a/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/GrpcGDCHardwareManagementCallableFactory.java
+++ b/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/GrpcGDCHardwareManagementCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGDCHardwareManagementCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/GrpcGDCHardwareManagementStub.java b/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/GrpcGDCHardwareManagementStub.java
index f4829e6b20ff..f2dd377464ac 100644
--- a/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/GrpcGDCHardwareManagementStub.java
+++ b/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/GrpcGDCHardwareManagementStub.java
@@ -101,6 +101,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGDCHardwareManagementStub extends GDCHardwareManagementStub {
diff --git a/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/HttpJsonGDCHardwareManagementCallableFactory.java b/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/HttpJsonGDCHardwareManagementCallableFactory.java
index f67e2d7bcc08..300c438424b7 100644
--- a/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/HttpJsonGDCHardwareManagementCallableFactory.java
+++ b/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/HttpJsonGDCHardwareManagementCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGDCHardwareManagementCallableFactory
diff --git a/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/HttpJsonGDCHardwareManagementStub.java b/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/HttpJsonGDCHardwareManagementStub.java
index 39b0c2125f19..ca58f3cffb98 100644
--- a/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/HttpJsonGDCHardwareManagementStub.java
+++ b/java-gdchardwaremanagement/google-cloud-gdchardwaremanagement/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/stub/HttpJsonGDCHardwareManagementStub.java
@@ -112,6 +112,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGDCHardwareManagementStub extends GDCHardwareManagementStub {
diff --git a/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/ChangeLogEntryName.java b/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/ChangeLogEntryName.java
index 3e7f9bbfb667..e9eb8a545df0 100644
--- a/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/ChangeLogEntryName.java
+++ b/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/ChangeLogEntryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ChangeLogEntryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ORDER_CHANGE_LOG_ENTRY =
diff --git a/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/CommentName.java b/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/CommentName.java
index f22d4434119a..529bf304f88e 100644
--- a/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/CommentName.java
+++ b/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/CommentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CommentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ORDER_COMMENT =
diff --git a/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/HardwareGroupName.java b/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/HardwareGroupName.java
index bbda4a7b08b6..1cae9dcebfdc 100644
--- a/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/HardwareGroupName.java
+++ b/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/HardwareGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HardwareGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ORDER_HARDWARE_GROUP =
diff --git a/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/HardwareName.java b/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/HardwareName.java
index b5a068b5b379..8be35faabc07 100644
--- a/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/HardwareName.java
+++ b/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/HardwareName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HardwareName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_HARDWARE =
diff --git a/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/LocationName.java b/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/LocationName.java
index 937b60900489..e9e4521fdb6e 100644
--- a/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/LocationName.java
+++ b/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/OrderName.java b/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/OrderName.java
index ec2c81358849..5a00a05b5563 100644
--- a/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/OrderName.java
+++ b/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/OrderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrderName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ORDER =
diff --git a/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/SiteName.java b/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/SiteName.java
index 00260832a77e..2d58f7667e3b 100644
--- a/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/SiteName.java
+++ b/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/SiteName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SiteName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SITE =
diff --git a/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/SkuName.java b/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/SkuName.java
index 126ad6014586..d0113db4bb66 100644
--- a/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/SkuName.java
+++ b/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/SkuName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SkuName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SKU =
diff --git a/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/ZoneName.java b/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/ZoneName.java
index 971dac11bf23..cc6a767fa5ba 100644
--- a/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/ZoneName.java
+++ b/java-gdchardwaremanagement/proto-google-cloud-gdchardwaremanagement-v1alpha/src/main/java/com/google/cloud/gdchardwaremanagement/v1alpha/ZoneName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ZoneName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ZONE =
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentServiceClient.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentServiceClient.java
index 7f8d1831c14d..c12e8d4b1a09 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentServiceClient.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -378,6 +379,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataAgentServiceClient implements BackgroundResource {
   private final DataAgentServiceSettings settings;
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentServiceSettings.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentServiceSettings.java
index 0465064c0860..64b050b8de44 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentServiceSettings.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataAgentServiceSettings extends ClientSettings<DataAgentServiceSettings> {
 
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataChatServiceClient.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataChatServiceClient.java
index 4d7cf7e22424..6a91ce42c6ff 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataChatServiceClient.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataChatServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -269,6 +270,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataChatServiceClient implements BackgroundResource {
   private final DataChatServiceSettings settings;
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataChatServiceSettings.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataChatServiceSettings.java
index b789b86947f3..fb9947a5c656 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataChatServiceSettings.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/DataChatServiceSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -94,6 +95,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataChatServiceSettings extends ClientSettings<DataChatServiceSettings> {
 
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataAgentServiceStub.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataAgentServiceStub.java
index 45710752c368..dfeb9c56de4d 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataAgentServiceStub.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataAgentServiceStub.java
@@ -44,6 +44,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataAgentServiceStub implements BackgroundResource {
 
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataAgentServiceStubSettings.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataAgentServiceStubSettings.java
index 700b20b60676..11be96e6fd87 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataAgentServiceStubSettings.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataAgentServiceStubSettings.java
@@ -78,6 +78,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataAgentServiceStubSettings extends StubSettings<DataAgentServiceStubSettings> {
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataChatServiceStub.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataChatServiceStub.java
index 1758b2be2ed8..d1e211220f5b 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataChatServiceStub.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataChatServiceStub.java
@@ -39,6 +39,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataChatServiceStub implements BackgroundResource {
 
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataChatServiceStubSettings.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataChatServiceStubSettings.java
index f3983a6ae328..2850ec28d7ac 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataChatServiceStubSettings.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataChatServiceStubSettings.java
@@ -72,6 +72,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataChatServiceStubSettings extends StubSettings<DataChatServiceStubSettings> {
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/GrpcDataAgentServiceCallableFactory.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/GrpcDataAgentServiceCallableFactory.java
index c41bd647b2e8..15cb8579e87a 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/GrpcDataAgentServiceCallableFactory.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/GrpcDataAgentServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataAgentServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/GrpcDataAgentServiceStub.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/GrpcDataAgentServiceStub.java
index 08b3295bd110..f83de27f323e 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/GrpcDataAgentServiceStub.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/GrpcDataAgentServiceStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataAgentServiceStub extends DataAgentServiceStub {
   private static final MethodDescriptor<ListDataAgentsRequest, ListDataAgentsResponse>
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/GrpcDataChatServiceCallableFactory.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/GrpcDataChatServiceCallableFactory.java
index 08f091b06976..51f173599690 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/GrpcDataChatServiceCallableFactory.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/GrpcDataChatServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataChatServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/GrpcDataChatServiceStub.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/GrpcDataChatServiceStub.java
index 6b97bf7d08e6..e834799aa7a6 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/GrpcDataChatServiceStub.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/GrpcDataChatServiceStub.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataChatServiceStub extends DataChatServiceStub {
   private static final MethodDescriptor<ChatRequest, Message> chatMethodDescriptor =
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/HttpJsonDataAgentServiceCallableFactory.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/HttpJsonDataAgentServiceCallableFactory.java
index bc097c14aefc..58307a4422d1 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/HttpJsonDataAgentServiceCallableFactory.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/HttpJsonDataAgentServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataAgentServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/HttpJsonDataAgentServiceStub.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/HttpJsonDataAgentServiceStub.java
index 1993f484d415..1cfc148d0329 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/HttpJsonDataAgentServiceStub.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/HttpJsonDataAgentServiceStub.java
@@ -64,6 +64,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataAgentServiceStub extends DataAgentServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/HttpJsonDataChatServiceCallableFactory.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/HttpJsonDataChatServiceCallableFactory.java
index f3cb11c76165..b0a5604d525a 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/HttpJsonDataChatServiceCallableFactory.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/HttpJsonDataChatServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataChatServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/HttpJsonDataChatServiceStub.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/HttpJsonDataChatServiceStub.java
index 02c4e42196e7..48b9025d1f2a 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/HttpJsonDataChatServiceStub.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/HttpJsonDataChatServiceStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataChatServiceStub extends DataChatServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataAgentServiceClient.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataAgentServiceClient.java
index 0fe4b8fb1105..12fe836aa692 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataAgentServiceClient.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataAgentServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -378,6 +379,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataAgentServiceClient implements BackgroundResource {
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataAgentServiceSettings.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataAgentServiceSettings.java
index b067a5ac7f51..4b1222faac52 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataAgentServiceSettings.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataAgentServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataAgentServiceSettings extends ClientSettings<DataAgentServiceSettings> {
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataChatServiceClient.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataChatServiceClient.java
index f40c6cff7ffc..b72ba03f3a5d 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataChatServiceClient.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataChatServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -284,6 +285,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataChatServiceClient implements BackgroundResource {
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataChatServiceSettings.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataChatServiceSettings.java
index 7cc3da759bee..c0d408ba5935 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataChatServiceSettings.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataChatServiceSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -94,6 +95,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataChatServiceSettings extends ClientSettings<DataChatServiceSettings> {
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/DataAgentServiceStub.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/DataAgentServiceStub.java
index 3e1e7389b7dc..f4eb60b748c3 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/DataAgentServiceStub.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/DataAgentServiceStub.java
@@ -45,6 +45,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DataAgentServiceStub implements BackgroundResource {
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/DataAgentServiceStubSettings.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/DataAgentServiceStubSettings.java
index 7099372e0235..71884b67f7b7 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/DataAgentServiceStubSettings.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/DataAgentServiceStubSettings.java
@@ -78,6 +78,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/DataChatServiceStub.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/DataChatServiceStub.java
index eaac65bc0c6b..2b65b6f9ddfc 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/DataChatServiceStub.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/DataChatServiceStub.java
@@ -42,6 +42,7 @@
 import com.google.cloud.location.Location;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DataChatServiceStub implements BackgroundResource {
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/DataChatServiceStubSettings.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/DataChatServiceStubSettings.java
index 9605e9977dd7..998c0dd92336 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/DataChatServiceStubSettings.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/DataChatServiceStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/GrpcDataAgentServiceCallableFactory.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/GrpcDataAgentServiceCallableFactory.java
index 96977d824145..d75ed7feeede 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/GrpcDataAgentServiceCallableFactory.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/GrpcDataAgentServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataAgentServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/GrpcDataAgentServiceStub.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/GrpcDataAgentServiceStub.java
index d730ed177915..50c6aa65b8c9 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/GrpcDataAgentServiceStub.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/GrpcDataAgentServiceStub.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataAgentServiceStub extends DataAgentServiceStub {
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/GrpcDataChatServiceCallableFactory.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/GrpcDataChatServiceCallableFactory.java
index 4315f50851d1..bd25e32c9258 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/GrpcDataChatServiceCallableFactory.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/GrpcDataChatServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataChatServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/GrpcDataChatServiceStub.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/GrpcDataChatServiceStub.java
index 06934ec075af..3188c5446f18 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/GrpcDataChatServiceStub.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/GrpcDataChatServiceStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataChatServiceStub extends DataChatServiceStub {
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/HttpJsonDataAgentServiceCallableFactory.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/HttpJsonDataAgentServiceCallableFactory.java
index 00a7eaabdbe3..040bca282fe9 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/HttpJsonDataAgentServiceCallableFactory.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/HttpJsonDataAgentServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataAgentServiceCallableFactory
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/HttpJsonDataAgentServiceStub.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/HttpJsonDataAgentServiceStub.java
index a9cec9d83a5b..fe7e93f793a8 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/HttpJsonDataAgentServiceStub.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/HttpJsonDataAgentServiceStub.java
@@ -65,6 +65,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataAgentServiceStub extends DataAgentServiceStub {
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/HttpJsonDataChatServiceCallableFactory.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/HttpJsonDataChatServiceCallableFactory.java
index e77813a2d0ba..b7f4d0f986c6 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/HttpJsonDataChatServiceCallableFactory.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/HttpJsonDataChatServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataChatServiceCallableFactory
diff --git a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/HttpJsonDataChatServiceStub.java b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/HttpJsonDataChatServiceStub.java
index 53d0218b7e56..ef24e40cd12b 100644
--- a/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/HttpJsonDataChatServiceStub.java
+++ b/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1beta/stub/HttpJsonDataChatServiceStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataChatServiceStub extends DataChatServiceStub {
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/ConversationName.java b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/ConversationName.java
index ad7bf6c35308..c42aa0218d4f 100644
--- a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/ConversationName.java
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/ConversationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONVERSATION =
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentName.java b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentName.java
index 1121a95c90a5..ff9b383da77e 100644
--- a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentName.java
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/DataAgentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataAgentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_AGENT =
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/LocationName.java b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/LocationName.java
index bc6392443733..39509a997f33 100644
--- a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/LocationName.java
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1/src/main/java/com/google/cloud/geminidataanalytics/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1beta/src/main/java/com/google/cloud/geminidataanalytics/v1beta/ConversationName.java b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1beta/src/main/java/com/google/cloud/geminidataanalytics/v1beta/ConversationName.java
index 75dfc97c6428..62b81d741c41 100644
--- a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1beta/src/main/java/com/google/cloud/geminidataanalytics/v1beta/ConversationName.java
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1beta/src/main/java/com/google/cloud/geminidataanalytics/v1beta/ConversationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONVERSATION =
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1beta/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataAgentName.java b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1beta/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataAgentName.java
index 7580c83103a6..7c4dbb40e1fa 100644
--- a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1beta/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataAgentName.java
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1beta/src/main/java/com/google/cloud/geminidataanalytics/v1beta/DataAgentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataAgentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATA_AGENT =
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1beta/src/main/java/com/google/cloud/geminidataanalytics/v1beta/LocationName.java b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1beta/src/main/java/com/google/cloud/geminidataanalytics/v1beta/LocationName.java
index f4aeb8c2684d..389e5326f344 100644
--- a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1beta/src/main/java/com/google/cloud/geminidataanalytics/v1beta/LocationName.java
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1beta/src/main/java/com/google/cloud/geminidataanalytics/v1beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1beta/src/main/java/com/google/cloud/geminidataanalytics/v1beta/ProjectName.java b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1beta/src/main/java/com/google/cloud/geminidataanalytics/v1beta/ProjectName.java
index 891026ae8df4..9b4149d8f21a 100644
--- a/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1beta/src/main/java/com/google/cloud/geminidataanalytics/v1beta/ProjectName.java
+++ b/java-geminidataanalytics/proto-google-cloud-geminidataanalytics-v1beta/src/main/java/com/google/cloud/geminidataanalytics/v1beta/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/BackupForGKEClient.java b/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/BackupForGKEClient.java
index 1ca50fa89f27..8988a51edb8e 100644
--- a/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/BackupForGKEClient.java
+++ b/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/BackupForGKEClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -968,6 +969,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupForGKEClient implements BackgroundResource {
   private final BackupForGKESettings settings;
diff --git a/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/BackupForGKESettings.java b/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/BackupForGKESettings.java
index f5507e144aa8..31e97b74cd4d 100644
--- a/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/BackupForGKESettings.java
+++ b/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/BackupForGKESettings.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupForGKESettings extends ClientSettings<BackupForGKESettings> {
 
diff --git a/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/BackupForGKEStub.java b/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/BackupForGKEStub.java
index 5a2abfeb8294..3bbad5afa5cd 100644
--- a/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/BackupForGKEStub.java
+++ b/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/BackupForGKEStub.java
@@ -105,6 +105,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BackupForGKEStub implements BackgroundResource {
 
diff --git a/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/BackupForGKEStubSettings.java b/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/BackupForGKEStubSettings.java
index 75f5eedf373f..e24ab8233ceb 100644
--- a/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/BackupForGKEStubSettings.java
+++ b/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/BackupForGKEStubSettings.java
@@ -139,6 +139,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -216,6 +217,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BackupForGKEStubSettings extends StubSettings<BackupForGKEStubSettings> {
diff --git a/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/GrpcBackupForGKECallableFactory.java b/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/GrpcBackupForGKECallableFactory.java
index 2ddcdb02d624..b919c00ba0eb 100644
--- a/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/GrpcBackupForGKECallableFactory.java
+++ b/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/GrpcBackupForGKECallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBackupForGKECallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/GrpcBackupForGKEStub.java b/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/GrpcBackupForGKEStub.java
index 61660de51619..fe1d06de00db 100644
--- a/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/GrpcBackupForGKEStub.java
+++ b/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/GrpcBackupForGKEStub.java
@@ -114,6 +114,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBackupForGKEStub extends BackupForGKEStub {
   private static final MethodDescriptor<CreateBackupPlanRequest, Operation>
diff --git a/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/HttpJsonBackupForGKECallableFactory.java b/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/HttpJsonBackupForGKECallableFactory.java
index d39fb5ad2ac3..14e6066161b8 100644
--- a/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/HttpJsonBackupForGKECallableFactory.java
+++ b/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/HttpJsonBackupForGKECallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBackupForGKECallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/HttpJsonBackupForGKEStub.java b/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/HttpJsonBackupForGKEStub.java
index 8988d92ba0a7..2778be3d325b 100644
--- a/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/HttpJsonBackupForGKEStub.java
+++ b/java-gke-backup/google-cloud-gke-backup/src/main/java/com/google/cloud/gkebackup/v1/stub/HttpJsonBackupForGKEStub.java
@@ -125,6 +125,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBackupForGKEStub extends BackupForGKEStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/BackupChannelName.java b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/BackupChannelName.java
index 4d58625fd7df..427bcedb7c10 100644
--- a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/BackupChannelName.java
+++ b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/BackupChannelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupChannelName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP_CHANNEL =
diff --git a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/BackupName.java b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/BackupName.java
index 169a90fe579f..3f3d012afde0 100644
--- a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/BackupName.java
+++ b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/BackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP_PLAN_BACKUP =
diff --git a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/BackupPlanBindingName.java b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/BackupPlanBindingName.java
index bc3b0e7fcf65..86b56c80fbfd 100644
--- a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/BackupPlanBindingName.java
+++ b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/BackupPlanBindingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupPlanBindingName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP_CHANNEL_BACKUP_PLAN_BINDING =
diff --git a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/BackupPlanName.java b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/BackupPlanName.java
index 1650a127ff0f..a5c0f6c2f5ce 100644
--- a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/BackupPlanName.java
+++ b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/BackupPlanName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupPlanName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP_PLAN =
diff --git a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/LocationName.java b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/LocationName.java
index e8343a18e41d..22832b65e09a 100644
--- a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/LocationName.java
+++ b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/RestoreChannelName.java b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/RestoreChannelName.java
index 5c8a272c4d85..c8ca39b70420 100644
--- a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/RestoreChannelName.java
+++ b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/RestoreChannelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RestoreChannelName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RESTORE_CHANNEL =
diff --git a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/RestoreName.java b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/RestoreName.java
index c788a2078ae5..a60c4453b5be 100644
--- a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/RestoreName.java
+++ b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/RestoreName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RestoreName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RESTORE_PLAN_RESTORE =
diff --git a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/RestorePlanBindingName.java b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/RestorePlanBindingName.java
index 10ceed8035a1..ba49948214d2 100644
--- a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/RestorePlanBindingName.java
+++ b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/RestorePlanBindingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RestorePlanBindingName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RESTORE_CHANNEL_RESTORE_PLAN_BINDING =
diff --git a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/RestorePlanName.java b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/RestorePlanName.java
index 3c5d9c62f6ff..f0115d3281c0 100644
--- a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/RestorePlanName.java
+++ b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/RestorePlanName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RestorePlanName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RESTORE_PLAN =
diff --git a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/VolumeBackupName.java b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/VolumeBackupName.java
index 72d270263a05..ec61f95082df 100644
--- a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/VolumeBackupName.java
+++ b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/VolumeBackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VolumeBackupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP_PLAN_BACKUP_VOLUME_BACKUP =
diff --git a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/VolumeRestoreName.java b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/VolumeRestoreName.java
index 79ef7313b75f..daf67518a5f0 100644
--- a/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/VolumeRestoreName.java
+++ b/java-gke-backup/proto-google-cloud-gke-backup-v1/src/main/java/com/google/cloud/gkebackup/v1/VolumeRestoreName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VolumeRestoreName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RESTORE_PLAN_RESTORE_VOLUME_RESTORE =
diff --git a/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/GatewayControlClient.java b/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/GatewayControlClient.java
index ca37046bd30d..b6336350d1dc 100644
--- a/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/GatewayControlClient.java
+++ b/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/GatewayControlClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GatewayControlClient implements BackgroundResource {
diff --git a/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/GatewayControlSettings.java b/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/GatewayControlSettings.java
index ca15254eee08..1f33f2fd812e 100644
--- a/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/GatewayControlSettings.java
+++ b/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/GatewayControlSettings.java
@@ -30,6 +30,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GatewayControlSettings extends ClientSettings<GatewayControlSettings> {
diff --git a/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/stub/GatewayControlStub.java b/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/stub/GatewayControlStub.java
index f5a920216428..d5691f401629 100644
--- a/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/stub/GatewayControlStub.java
+++ b/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/stub/GatewayControlStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.gkeconnect.gateway.v1beta1.GenerateCredentialsRequest;
 import com.google.cloud.gkeconnect.gateway.v1beta1.GenerateCredentialsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class GatewayControlStub implements BackgroundResource {
diff --git a/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/stub/GatewayControlStubSettings.java b/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/stub/GatewayControlStubSettings.java
index ac402c51eb3c..780644ba1678 100644
--- a/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/stub/GatewayControlStubSettings.java
+++ b/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/stub/GatewayControlStubSettings.java
@@ -43,6 +43,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -95,6 +96,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/stub/HttpJsonGatewayControlCallableFactory.java b/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/stub/HttpJsonGatewayControlCallableFactory.java
index d1afc5993e84..bbe8c9403abe 100644
--- a/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/stub/HttpJsonGatewayControlCallableFactory.java
+++ b/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/stub/HttpJsonGatewayControlCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGatewayControlCallableFactory
diff --git a/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/stub/HttpJsonGatewayControlStub.java b/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/stub/HttpJsonGatewayControlStub.java
index b2f09d2bae8a..ce38a769eda4 100644
--- a/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/stub/HttpJsonGatewayControlStub.java
+++ b/java-gke-connect-gateway/google-cloud-gke-connect-gateway/src/main/java/com/google/cloud/gkeconnect/gateway/v1beta1/stub/HttpJsonGatewayControlStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGatewayControlStub extends GatewayControlStub {
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AttachedClustersClient.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AttachedClustersClient.java
index 178cba3cd52d..622ad0c45261 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AttachedClustersClient.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AttachedClustersClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -303,6 +304,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AttachedClustersClient implements BackgroundResource {
   private final AttachedClustersSettings settings;
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AttachedClustersSettings.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AttachedClustersSettings.java
index 9456beed04a1..dbf444817825 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AttachedClustersSettings.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AttachedClustersSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AttachedClustersSettings extends ClientSettings<AttachedClustersSettings> {
 
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AwsClustersClient.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AwsClustersClient.java
index bc655cb2c8fe..ea50be72f2b6 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AwsClustersClient.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AwsClustersClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -421,6 +422,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class AwsClustersClient implements BackgroundResource {
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AwsClustersSettings.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AwsClustersSettings.java
index 8a211e371d17..6cbb4bb3a17f 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AwsClustersSettings.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AwsClustersSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class AwsClustersSettings extends ClientSettings<AwsClustersSettings> {
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AzureClustersClient.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AzureClustersClient.java
index af216ded5253..3d0bb7536656 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AzureClustersClient.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AzureClustersClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -495,6 +496,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class AzureClustersClient implements BackgroundResource {
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AzureClustersSettings.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AzureClustersSettings.java
index 1b62a3ff5e96..101ee50024ca 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AzureClustersSettings.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AzureClustersSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class AzureClustersSettings extends ClientSettings<AzureClustersSettings> {
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AttachedClustersStub.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AttachedClustersStub.java
index 1b9d5e7046fa..29b3bbbeb8e8 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AttachedClustersStub.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AttachedClustersStub.java
@@ -40,6 +40,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AttachedClustersStub implements BackgroundResource {
 
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AttachedClustersStubSettings.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AttachedClustersStubSettings.java
index a3e232be96b7..a7d6babce739 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AttachedClustersStubSettings.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AttachedClustersStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AttachedClustersStubSettings extends StubSettings<AttachedClustersStubSettings> {
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AwsClustersStub.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AwsClustersStub.java
index 8f46358cf960..ba2a8e436e60 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AwsClustersStub.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AwsClustersStub.java
@@ -52,6 +52,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public abstract class AwsClustersStub implements BackgroundResource {
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AwsClustersStubSettings.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AwsClustersStubSettings.java
index be1da0a7457b..fee624b9aee0 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AwsClustersStubSettings.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AwsClustersStubSettings.java
@@ -86,6 +86,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -165,6 +166,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AzureClustersStub.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AzureClustersStub.java
index 956c7a45b774..6963206e4150 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AzureClustersStub.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AzureClustersStub.java
@@ -58,6 +58,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public abstract class AzureClustersStub implements BackgroundResource {
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AzureClustersStubSettings.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AzureClustersStubSettings.java
index 7533db914f58..d6ef18b94d90 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AzureClustersStubSettings.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AzureClustersStubSettings.java
@@ -92,6 +92,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -171,6 +172,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAttachedClustersCallableFactory.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAttachedClustersCallableFactory.java
index 26ecb102f6cd..e47fb04d4084 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAttachedClustersCallableFactory.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAttachedClustersCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAttachedClustersCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAttachedClustersStub.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAttachedClustersStub.java
index 3cb23cb1afe6..ca58c606870e 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAttachedClustersStub.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAttachedClustersStub.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAttachedClustersStub extends AttachedClustersStub {
   private static final MethodDescriptor<CreateAttachedClusterRequest, Operation>
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAwsClustersCallableFactory.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAwsClustersCallableFactory.java
index e7ec47613dc9..57bd97f07df2 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAwsClustersCallableFactory.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAwsClustersCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class GrpcAwsClustersCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAwsClustersStub.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAwsClustersStub.java
index 2ed0d4b46b41..26ad7f9859ce 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAwsClustersStub.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAwsClustersStub.java
@@ -61,6 +61,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class GrpcAwsClustersStub extends AwsClustersStub {
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAzureClustersCallableFactory.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAzureClustersCallableFactory.java
index b594215871b9..fceeb556e16f 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAzureClustersCallableFactory.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAzureClustersCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class GrpcAzureClustersCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAzureClustersStub.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAzureClustersStub.java
index ece51cb7fa8b..6be6133d33b9 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAzureClustersStub.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/GrpcAzureClustersStub.java
@@ -67,6 +67,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -76,6 +77,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class GrpcAzureClustersStub extends AzureClustersStub {
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAttachedClustersCallableFactory.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAttachedClustersCallableFactory.java
index 6671d2d8793d..90326e7cdf07 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAttachedClustersCallableFactory.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAttachedClustersCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAttachedClustersCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAttachedClustersStub.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAttachedClustersStub.java
index 29cd66e931fa..918a35c82054 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAttachedClustersStub.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAttachedClustersStub.java
@@ -60,6 +60,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAttachedClustersStub extends AttachedClustersStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAwsClustersCallableFactory.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAwsClustersCallableFactory.java
index 609959d218b9..225522ecc2c4 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAwsClustersCallableFactory.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAwsClustersCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class HttpJsonAwsClustersCallableFactory
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAwsClustersStub.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAwsClustersStub.java
index 287e9ef0abfe..401b9737289f 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAwsClustersStub.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAwsClustersStub.java
@@ -72,6 +72,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class HttpJsonAwsClustersStub extends AwsClustersStub {
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAzureClustersCallableFactory.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAzureClustersCallableFactory.java
index 0894616860b8..58a4a6cec80c 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAzureClustersCallableFactory.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAzureClustersCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class HttpJsonAzureClustersCallableFactory
diff --git a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAzureClustersStub.java b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAzureClustersStub.java
index 1618aacc3b17..e4241f953638 100644
--- a/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAzureClustersStub.java
+++ b/java-gke-multi-cloud/google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/HttpJsonAzureClustersStub.java
@@ -78,6 +78,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  *
  * @deprecated This class is deprecated and will be removed in the next major version update.
  */
+@NullMarked
 @Deprecated
 @Generated("by gapic-generator-java")
 public class HttpJsonAzureClustersStub extends AzureClustersStub {
diff --git a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AttachedClusterName.java b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AttachedClusterName.java
index 9bfbde59fe7e..f2b89cc29df8 100644
--- a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AttachedClusterName.java
+++ b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AttachedClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AttachedClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ATTACHED_CLUSTER =
diff --git a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AttachedServerConfigName.java b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AttachedServerConfigName.java
index 45190e70d4cd..8d002bdbcbf2 100644
--- a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AttachedServerConfigName.java
+++ b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AttachedServerConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AttachedServerConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AwsClusterName.java b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AwsClusterName.java
index 686e88430c61..1af61715f4db 100644
--- a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AwsClusterName.java
+++ b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AwsClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AwsClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AWS_CLUSTER =
diff --git a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AwsNodePoolName.java b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AwsNodePoolName.java
index 3e201a4c7599..26ca65976c1e 100644
--- a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AwsNodePoolName.java
+++ b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AwsNodePoolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AwsNodePoolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AWS_CLUSTER_AWS_NODE_POOL =
diff --git a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AwsServerConfigName.java b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AwsServerConfigName.java
index dd350419402c..71c2c1a05a0f 100644
--- a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AwsServerConfigName.java
+++ b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AwsServerConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AwsServerConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AzureClientName.java b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AzureClientName.java
index 705d2eaa7835..e4ea0945a8fd 100644
--- a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AzureClientName.java
+++ b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AzureClientName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AzureClientName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AZURE_CLIENT =
diff --git a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AzureClusterName.java b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AzureClusterName.java
index 340342ba7c44..b3da70999932 100644
--- a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AzureClusterName.java
+++ b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AzureClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AzureClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AZURE_CLUSTER =
diff --git a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AzureNodePoolName.java b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AzureNodePoolName.java
index 996720a41161..3e6e6d46e758 100644
--- a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AzureNodePoolName.java
+++ b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AzureNodePoolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AzureNodePoolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AZURE_CLUSTER_AZURE_NODE_POOL =
diff --git a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AzureServerConfigName.java b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AzureServerConfigName.java
index 3ee308b47e23..82afbabe1be0 100644
--- a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AzureServerConfigName.java
+++ b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/AzureServerConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AzureServerConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/LocationName.java b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/LocationName.java
index f56ce0ae92ec..b4b011a4e2d8 100644
--- a/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/LocationName.java
+++ b/java-gke-multi-cloud/proto-google-cloud-gke-multi-cloud-v1/src/main/java/com/google/cloud/gkemulticloud/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/GkeHubClient.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/GkeHubClient.java
index 3c40b975a666..508e7c458be9 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/GkeHubClient.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/GkeHubClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -998,6 +999,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GkeHubClient implements BackgroundResource {
   private final GkeHubSettings settings;
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/GkeHubSettings.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/GkeHubSettings.java
index 3cc4c50ddaee..d8375b04cf89 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/GkeHubSettings.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/GkeHubSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GkeHubSettings extends ClientSettings<GkeHubSettings> {
 
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/GkeHubStub.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/GkeHubStub.java
index 9c92b2b7dc8a..05992b6979e7 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/GkeHubStub.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/GkeHubStub.java
@@ -98,6 +98,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -105,6 +106,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GkeHubStub implements BackgroundResource {
 
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/GkeHubStubSettings.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/GkeHubStubSettings.java
index 346d5609cc64..6fea01b13834 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/GkeHubStubSettings.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/GkeHubStubSettings.java
@@ -132,6 +132,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -207,6 +208,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GkeHubStubSettings extends StubSettings<GkeHubStubSettings> {
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/GrpcGkeHubCallableFactory.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/GrpcGkeHubCallableFactory.java
index 0e9db9de1239..810eaa562fab 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/GrpcGkeHubCallableFactory.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/GrpcGkeHubCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGkeHubCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/GrpcGkeHubStub.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/GrpcGkeHubStub.java
index a41794bca709..e177297333eb 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/GrpcGkeHubStub.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/GrpcGkeHubStub.java
@@ -107,6 +107,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGkeHubStub extends GkeHubStub {
   private static final MethodDescriptor<ListMembershipsRequest, ListMembershipsResponse>
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/HttpJsonGkeHubCallableFactory.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/HttpJsonGkeHubCallableFactory.java
index eb7cfd216715..b1a023e646a2 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/HttpJsonGkeHubCallableFactory.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/HttpJsonGkeHubCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGkeHubCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/HttpJsonGkeHubStub.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/HttpJsonGkeHubStub.java
index 413e6d76527b..7ba7acab4926 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/HttpJsonGkeHubStub.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1/stub/HttpJsonGkeHubStub.java
@@ -118,6 +118,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGkeHubStub extends GkeHubStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/GkeHubClient.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/GkeHubClient.java
index 7047e1c9f77d..4d05cfffb5e6 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/GkeHubClient.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/GkeHubClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -229,6 +230,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GkeHubClient implements BackgroundResource {
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/GkeHubSettings.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/GkeHubSettings.java
index 5c477f299fdc..71293ecdf6fa 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/GkeHubSettings.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/GkeHubSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GkeHubSettings extends ClientSettings<GkeHubSettings> {
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/GkeHubStub.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/GkeHubStub.java
index 31bdc130b5f3..7abeb173f0b3 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/GkeHubStub.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/GkeHubStub.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class GkeHubStub implements BackgroundResource {
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/GkeHubStubSettings.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/GkeHubStubSettings.java
index 7a9f8b27ae88..74a4f6f2ac37 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/GkeHubStubSettings.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/GkeHubStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -142,6 +143,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/GrpcGkeHubCallableFactory.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/GrpcGkeHubCallableFactory.java
index 3694a706921d..c1c099efebb2 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/GrpcGkeHubCallableFactory.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/GrpcGkeHubCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGkeHubCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/GrpcGkeHubStub.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/GrpcGkeHubStub.java
index 3e8f971e0f84..5e20ebd5b3e3 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/GrpcGkeHubStub.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/GrpcGkeHubStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGkeHubStub extends GkeHubStub {
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/HttpJsonGkeHubCallableFactory.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/HttpJsonGkeHubCallableFactory.java
index 8779e315cbe6..b2555fec4420 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/HttpJsonGkeHubCallableFactory.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/HttpJsonGkeHubCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGkeHubCallableFactory
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/HttpJsonGkeHubStub.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/HttpJsonGkeHubStub.java
index eed7d8ce8a02..21944877685b 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/HttpJsonGkeHubStub.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1alpha/stub/HttpJsonGkeHubStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGkeHubStub extends GkeHubStub {
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/GkeHubClient.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/GkeHubClient.java
index b8a8c7a9ece9..dfca76bae401 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/GkeHubClient.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/GkeHubClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -229,6 +230,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GkeHubClient implements BackgroundResource {
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/GkeHubSettings.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/GkeHubSettings.java
index 0fbc525718b0..50784696015e 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/GkeHubSettings.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/GkeHubSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GkeHubSettings extends ClientSettings<GkeHubSettings> {
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/GkeHubStub.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/GkeHubStub.java
index 5ef40c949c5f..0676d91f3928 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/GkeHubStub.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/GkeHubStub.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class GkeHubStub implements BackgroundResource {
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/GkeHubStubSettings.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/GkeHubStubSettings.java
index d43f376826b0..14184366c501 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/GkeHubStubSettings.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/GkeHubStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -142,6 +143,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/GrpcGkeHubCallableFactory.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/GrpcGkeHubCallableFactory.java
index cc513174776b..32ebaf972cc5 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/GrpcGkeHubCallableFactory.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/GrpcGkeHubCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGkeHubCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/GrpcGkeHubStub.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/GrpcGkeHubStub.java
index d6e9f602f392..596f26f95e11 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/GrpcGkeHubStub.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/GrpcGkeHubStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGkeHubStub extends GkeHubStub {
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/HttpJsonGkeHubCallableFactory.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/HttpJsonGkeHubCallableFactory.java
index 0315f8aff78e..3c6b800e6e0e 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/HttpJsonGkeHubCallableFactory.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/HttpJsonGkeHubCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGkeHubCallableFactory
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/HttpJsonGkeHubStub.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/HttpJsonGkeHubStub.java
index aa061a9784c7..9b982f9818ed 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/HttpJsonGkeHubStub.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta/stub/HttpJsonGkeHubStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGkeHubStub extends GkeHubStub {
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/GkeHubMembershipServiceClient.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/GkeHubMembershipServiceClient.java
index 3ebe74f5a35f..957185e65588 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/GkeHubMembershipServiceClient.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/GkeHubMembershipServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -365,6 +366,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GkeHubMembershipServiceClient implements BackgroundResource {
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/GkeHubMembershipServiceSettings.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/GkeHubMembershipServiceSettings.java
index d22c9f613186..fee17415cbc0 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/GkeHubMembershipServiceSettings.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/GkeHubMembershipServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GkeHubMembershipServiceSettings
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/GkeHubMembershipServiceStub.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/GkeHubMembershipServiceStub.java
index 2c6cec2ee7ff..7e8a19ae0dfd 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/GkeHubMembershipServiceStub.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/GkeHubMembershipServiceStub.java
@@ -50,6 +50,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class GkeHubMembershipServiceStub implements BackgroundResource {
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/GkeHubMembershipServiceStubSettings.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/GkeHubMembershipServiceStubSettings.java
index a7455c495373..dccdb3fd8915 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/GkeHubMembershipServiceStubSettings.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/GkeHubMembershipServiceStubSettings.java
@@ -83,6 +83,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -161,6 +162,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/GrpcGkeHubMembershipServiceCallableFactory.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/GrpcGkeHubMembershipServiceCallableFactory.java
index ad1ad846d522..9029f6f4c6a0 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/GrpcGkeHubMembershipServiceCallableFactory.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/GrpcGkeHubMembershipServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGkeHubMembershipServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/GrpcGkeHubMembershipServiceStub.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/GrpcGkeHubMembershipServiceStub.java
index a668d7560ab3..80a1ced70238 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/GrpcGkeHubMembershipServiceStub.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/GrpcGkeHubMembershipServiceStub.java
@@ -59,6 +59,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGkeHubMembershipServiceStub extends GkeHubMembershipServiceStub {
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/HttpJsonGkeHubMembershipServiceCallableFactory.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/HttpJsonGkeHubMembershipServiceCallableFactory.java
index 28d97392ca5c..d1c196129a47 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/HttpJsonGkeHubMembershipServiceCallableFactory.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/HttpJsonGkeHubMembershipServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGkeHubMembershipServiceCallableFactory
diff --git a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/HttpJsonGkeHubMembershipServiceStub.java b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/HttpJsonGkeHubMembershipServiceStub.java
index 5444d5949505..43f87c167c44 100644
--- a/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/HttpJsonGkeHubMembershipServiceStub.java
+++ b/java-gkehub/google-cloud-gkehub/src/main/java/com/google/cloud/gkehub/v1beta1/stub/HttpJsonGkeHubMembershipServiceStub.java
@@ -70,6 +70,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGkeHubMembershipServiceStub extends GkeHubMembershipServiceStub {
diff --git a/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/FeatureName.java b/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/FeatureName.java
index 47ef3818eaef..410c5fcd38bc 100644
--- a/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/FeatureName.java
+++ b/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/FeatureName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FeatureName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FEATURE =
diff --git a/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/FleetName.java b/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/FleetName.java
index f47a82a2f136..43f2f7e3e385 100644
--- a/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/FleetName.java
+++ b/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/FleetName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FleetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FLEET =
diff --git a/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/LocationName.java b/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/LocationName.java
index 7f0c154c7dc6..a029d983730a 100644
--- a/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/LocationName.java
+++ b/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/MembershipBindingName.java b/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/MembershipBindingName.java
index 33c646608994..a3d334f442ab 100644
--- a/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/MembershipBindingName.java
+++ b/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/MembershipBindingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MembershipBindingName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MEMBERSHIP_MEMBERSHIPBINDING =
diff --git a/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/MembershipName.java b/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/MembershipName.java
index 54dc7c5455f7..6c0a19bafbab 100644
--- a/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/MembershipName.java
+++ b/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/MembershipName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MembershipName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MEMBERSHIP =
diff --git a/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/NamespaceName.java b/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/NamespaceName.java
index 6969dab0449f..3c856c48fc67 100644
--- a/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/NamespaceName.java
+++ b/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/NamespaceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NamespaceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SCOPE_NAMESPACE =
diff --git a/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/RBACRoleBindingName.java b/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/RBACRoleBindingName.java
index 75da08410a70..f6c0e4792c0d 100644
--- a/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/RBACRoleBindingName.java
+++ b/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/RBACRoleBindingName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RBACRoleBindingName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SCOPE_RBACROLEBINDING =
diff --git a/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/ScopeName.java b/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/ScopeName.java
index 655d026f916a..a0b90845574c 100644
--- a/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/ScopeName.java
+++ b/java-gkehub/proto-google-cloud-gkehub-v1/src/main/java/com/google/cloud/gkehub/v1/ScopeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ScopeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SCOPE =
diff --git a/java-gkehub/proto-google-cloud-gkehub-v1beta1/src/main/java/com/google/cloud/gkehub/v1beta1/LocationName.java b/java-gkehub/proto-google-cloud-gkehub-v1beta1/src/main/java/com/google/cloud/gkehub/v1beta1/LocationName.java
index 2c00b1652be5..d7aecdcd05f9 100644
--- a/java-gkehub/proto-google-cloud-gkehub-v1beta1/src/main/java/com/google/cloud/gkehub/v1beta1/LocationName.java
+++ b/java-gkehub/proto-google-cloud-gkehub-v1beta1/src/main/java/com/google/cloud/gkehub/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-gkehub/proto-google-cloud-gkehub-v1beta1/src/main/java/com/google/cloud/gkehub/v1beta1/MembershipName.java b/java-gkehub/proto-google-cloud-gkehub-v1beta1/src/main/java/com/google/cloud/gkehub/v1beta1/MembershipName.java
index bd42268eda60..5d4f80f0590b 100644
--- a/java-gkehub/proto-google-cloud-gkehub-v1beta1/src/main/java/com/google/cloud/gkehub/v1beta1/MembershipName.java
+++ b/java-gkehub/proto-google-cloud-gkehub-v1beta1/src/main/java/com/google/cloud/gkehub/v1beta1/MembershipName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MembershipName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MEMBERSHIP =
diff --git a/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/GkeInferenceQuickstartClient.java b/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/GkeInferenceQuickstartClient.java
index 273cdaa90f1b..4b6b483601fd 100644
--- a/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/GkeInferenceQuickstartClient.java
+++ b/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/GkeInferenceQuickstartClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -221,6 +222,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GkeInferenceQuickstartClient implements BackgroundResource {
   private final GkeInferenceQuickstartSettings settings;
diff --git a/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/GkeInferenceQuickstartSettings.java b/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/GkeInferenceQuickstartSettings.java
index d0be0f013a72..29196eafa3f5 100644
--- a/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/GkeInferenceQuickstartSettings.java
+++ b/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/GkeInferenceQuickstartSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GkeInferenceQuickstartSettings extends ClientSettings<GkeInferenceQuickstartSettings> {
 
diff --git a/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/GkeInferenceQuickstartStub.java b/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/GkeInferenceQuickstartStub.java
index 9a95fc9b1a70..039c65c3ba6a 100644
--- a/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/GkeInferenceQuickstartStub.java
+++ b/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/GkeInferenceQuickstartStub.java
@@ -36,6 +36,7 @@
 import com.google.cloud.gkerecommender.v1.GenerateOptimizedManifestRequest;
 import com.google.cloud.gkerecommender.v1.GenerateOptimizedManifestResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GkeInferenceQuickstartStub implements BackgroundResource {
 
diff --git a/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/GkeInferenceQuickstartStubSettings.java b/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/GkeInferenceQuickstartStubSettings.java
index 50539866f29f..622c2683708b 100644
--- a/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/GkeInferenceQuickstartStubSettings.java
+++ b/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/GkeInferenceQuickstartStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GkeInferenceQuickstartStubSettings
diff --git a/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/GrpcGkeInferenceQuickstartCallableFactory.java b/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/GrpcGkeInferenceQuickstartCallableFactory.java
index 4d5bf37106cf..eedac64d0c30 100644
--- a/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/GrpcGkeInferenceQuickstartCallableFactory.java
+++ b/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/GrpcGkeInferenceQuickstartCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGkeInferenceQuickstartCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/GrpcGkeInferenceQuickstartStub.java b/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/GrpcGkeInferenceQuickstartStub.java
index 59b594f63425..d08ee48ffeef 100644
--- a/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/GrpcGkeInferenceQuickstartStub.java
+++ b/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/GrpcGkeInferenceQuickstartStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGkeInferenceQuickstartStub extends GkeInferenceQuickstartStub {
   private static final MethodDescriptor<FetchModelsRequest, FetchModelsResponse>
diff --git a/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/HttpJsonGkeInferenceQuickstartCallableFactory.java b/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/HttpJsonGkeInferenceQuickstartCallableFactory.java
index d29723583e98..226014840c17 100644
--- a/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/HttpJsonGkeInferenceQuickstartCallableFactory.java
+++ b/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/HttpJsonGkeInferenceQuickstartCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGkeInferenceQuickstartCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/HttpJsonGkeInferenceQuickstartStub.java b/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/HttpJsonGkeInferenceQuickstartStub.java
index bfdb0f4ab98c..b24b23432b9b 100644
--- a/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/HttpJsonGkeInferenceQuickstartStub.java
+++ b/java-gkerecommender/google-cloud-gkerecommender/src/main/java/com/google/cloud/gkerecommender/v1/stub/HttpJsonGkeInferenceQuickstartStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGkeInferenceQuickstartStub extends GkeInferenceQuickstartStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-grafeas/src/main/java/io/grafeas/v1/GrafeasClient.java b/java-grafeas/src/main/java/io/grafeas/v1/GrafeasClient.java
index 81efcd266021..f43199362fd0 100644
--- a/java-grafeas/src/main/java/io/grafeas/v1/GrafeasClient.java
+++ b/java-grafeas/src/main/java/io/grafeas/v1/GrafeasClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -384,6 +385,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrafeasClient implements BackgroundResource {
   private final GrafeasSettings settings;
diff --git a/java-grafeas/src/main/java/io/grafeas/v1/GrafeasSettings.java b/java-grafeas/src/main/java/io/grafeas/v1/GrafeasSettings.java
index 8d3b3bf182f8..ba6ea1700f19 100644
--- a/java-grafeas/src/main/java/io/grafeas/v1/GrafeasSettings.java
+++ b/java-grafeas/src/main/java/io/grafeas/v1/GrafeasSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrafeasSettings extends ClientSettings<GrafeasSettings> {
 
diff --git a/java-grafeas/src/main/java/io/grafeas/v1/NoteName.java b/java-grafeas/src/main/java/io/grafeas/v1/NoteName.java
index cbe6430ee1ec..202ce7f50d09 100644
--- a/java-grafeas/src/main/java/io/grafeas/v1/NoteName.java
+++ b/java-grafeas/src/main/java/io/grafeas/v1/NoteName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NoteName implements ResourceName {
   private static final PathTemplate PROJECT_NOTE =
diff --git a/java-grafeas/src/main/java/io/grafeas/v1/OccurrenceName.java b/java-grafeas/src/main/java/io/grafeas/v1/OccurrenceName.java
index 63cf46484bf1..016f1bec3fcf 100644
--- a/java-grafeas/src/main/java/io/grafeas/v1/OccurrenceName.java
+++ b/java-grafeas/src/main/java/io/grafeas/v1/OccurrenceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OccurrenceName implements ResourceName {
   private static final PathTemplate PROJECT_OCCURRENCE =
diff --git a/java-grafeas/src/main/java/io/grafeas/v1/ProjectName.java b/java-grafeas/src/main/java/io/grafeas/v1/ProjectName.java
index 139e4a513187..65a65e40233b 100644
--- a/java-grafeas/src/main/java/io/grafeas/v1/ProjectName.java
+++ b/java-grafeas/src/main/java/io/grafeas/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-grafeas/src/main/java/io/grafeas/v1/stub/GrafeasStub.java b/java-grafeas/src/main/java/io/grafeas/v1/stub/GrafeasStub.java
index 2b77debc507a..a07eca89ca99 100644
--- a/java-grafeas/src/main/java/io/grafeas/v1/stub/GrafeasStub.java
+++ b/java-grafeas/src/main/java/io/grafeas/v1/stub/GrafeasStub.java
@@ -45,6 +45,7 @@
 import io.grafeas.v1.UpdateNoteRequest;
 import io.grafeas.v1.UpdateOccurrenceRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GrafeasStub implements BackgroundResource {
 
diff --git a/java-grafeas/src/main/java/io/grafeas/v1/stub/GrafeasStubSettings.java b/java-grafeas/src/main/java/io/grafeas/v1/stub/GrafeasStubSettings.java
index 2d63f8210ff2..87734f5e5714 100644
--- a/java-grafeas/src/main/java/io/grafeas/v1/stub/GrafeasStubSettings.java
+++ b/java-grafeas/src/main/java/io/grafeas/v1/stub/GrafeasStubSettings.java
@@ -73,6 +73,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GrafeasStubSettings extends StubSettings<GrafeasStubSettings> {
diff --git a/java-grafeas/src/main/java/io/grafeas/v1/stub/GrpcGrafeasCallableFactory.java b/java-grafeas/src/main/java/io/grafeas/v1/stub/GrpcGrafeasCallableFactory.java
index 30240ddb7a74..3422054d94d7 100644
--- a/java-grafeas/src/main/java/io/grafeas/v1/stub/GrpcGrafeasCallableFactory.java
+++ b/java-grafeas/src/main/java/io/grafeas/v1/stub/GrpcGrafeasCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGrafeasCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-grafeas/src/main/java/io/grafeas/v1/stub/GrpcGrafeasStub.java b/java-grafeas/src/main/java/io/grafeas/v1/stub/GrpcGrafeasStub.java
index 2c56aa78f9b5..fec7759eb271 100644
--- a/java-grafeas/src/main/java/io/grafeas/v1/stub/GrpcGrafeasStub.java
+++ b/java-grafeas/src/main/java/io/grafeas/v1/stub/GrpcGrafeasStub.java
@@ -55,6 +55,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGrafeasStub extends GrafeasStub {
   private static final MethodDescriptor<GetOccurrenceRequest, Occurrence>
diff --git a/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/GSuiteAddOnsClient.java b/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/GSuiteAddOnsClient.java
index 166b37fc87ca..c68c1c11835a 100644
--- a/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/GSuiteAddOnsClient.java
+++ b/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/GSuiteAddOnsClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -308,6 +309,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GSuiteAddOnsClient implements BackgroundResource {
   private final GSuiteAddOnsSettings settings;
diff --git a/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/GSuiteAddOnsSettings.java b/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/GSuiteAddOnsSettings.java
index c9f2ddb695b0..3a77a4dd177f 100644
--- a/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/GSuiteAddOnsSettings.java
+++ b/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/GSuiteAddOnsSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GSuiteAddOnsSettings extends ClientSettings<GSuiteAddOnsSettings> {
 
diff --git a/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/GSuiteAddOnsStub.java b/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/GSuiteAddOnsStub.java
index a61592a80795..dd8a6560dad2 100644
--- a/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/GSuiteAddOnsStub.java
+++ b/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/GSuiteAddOnsStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.gsuiteaddons.v1.UninstallDeploymentRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GSuiteAddOnsStub implements BackgroundResource {
 
diff --git a/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/GSuiteAddOnsStubSettings.java b/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/GSuiteAddOnsStubSettings.java
index c126c1b898ad..638f1313a6ad 100644
--- a/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/GSuiteAddOnsStubSettings.java
+++ b/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/GSuiteAddOnsStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GSuiteAddOnsStubSettings extends StubSettings<GSuiteAddOnsStubSettings> {
diff --git a/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/GrpcGSuiteAddOnsCallableFactory.java b/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/GrpcGSuiteAddOnsCallableFactory.java
index af1cf39ecf3d..daf566dd2780 100644
--- a/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/GrpcGSuiteAddOnsCallableFactory.java
+++ b/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/GrpcGSuiteAddOnsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGSuiteAddOnsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/GrpcGSuiteAddOnsStub.java b/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/GrpcGSuiteAddOnsStub.java
index b7ad53f97d55..1619a7cbca96 100644
--- a/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/GrpcGSuiteAddOnsStub.java
+++ b/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/GrpcGSuiteAddOnsStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGSuiteAddOnsStub extends GSuiteAddOnsStub {
   private static final MethodDescriptor<GetAuthorizationRequest, Authorization>
diff --git a/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/HttpJsonGSuiteAddOnsCallableFactory.java b/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/HttpJsonGSuiteAddOnsCallableFactory.java
index 9ca9710798bb..a2952b10b08d 100644
--- a/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/HttpJsonGSuiteAddOnsCallableFactory.java
+++ b/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/HttpJsonGSuiteAddOnsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGSuiteAddOnsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/HttpJsonGSuiteAddOnsStub.java b/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/HttpJsonGSuiteAddOnsStub.java
index be10dcc0056f..b4cf43188474 100644
--- a/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/HttpJsonGSuiteAddOnsStub.java
+++ b/java-gsuite-addons/google-cloud-gsuite-addons/src/main/java/com/google/cloud/gsuiteaddons/v1/stub/HttpJsonGSuiteAddOnsStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGSuiteAddOnsStub extends GSuiteAddOnsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-gsuite-addons/proto-google-cloud-gsuite-addons-v1/src/main/java/com/google/cloud/gsuiteaddons/v1/AuthorizationName.java b/java-gsuite-addons/proto-google-cloud-gsuite-addons-v1/src/main/java/com/google/cloud/gsuiteaddons/v1/AuthorizationName.java
index 0027f8d48a03..27552a07c4be 100644
--- a/java-gsuite-addons/proto-google-cloud-gsuite-addons-v1/src/main/java/com/google/cloud/gsuiteaddons/v1/AuthorizationName.java
+++ b/java-gsuite-addons/proto-google-cloud-gsuite-addons-v1/src/main/java/com/google/cloud/gsuiteaddons/v1/AuthorizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AuthorizationName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-gsuite-addons/proto-google-cloud-gsuite-addons-v1/src/main/java/com/google/cloud/gsuiteaddons/v1/DeploymentName.java b/java-gsuite-addons/proto-google-cloud-gsuite-addons-v1/src/main/java/com/google/cloud/gsuiteaddons/v1/DeploymentName.java
index c7534428a4ea..6ebbbc1eb59b 100644
--- a/java-gsuite-addons/proto-google-cloud-gsuite-addons-v1/src/main/java/com/google/cloud/gsuiteaddons/v1/DeploymentName.java
+++ b/java-gsuite-addons/proto-google-cloud-gsuite-addons-v1/src/main/java/com/google/cloud/gsuiteaddons/v1/DeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentName implements ResourceName {
   private static final PathTemplate PROJECT_DEPLOYMENT =
diff --git a/java-gsuite-addons/proto-google-cloud-gsuite-addons-v1/src/main/java/com/google/cloud/gsuiteaddons/v1/InstallStatusName.java b/java-gsuite-addons/proto-google-cloud-gsuite-addons-v1/src/main/java/com/google/cloud/gsuiteaddons/v1/InstallStatusName.java
index bac2396a3a38..5f7d09f6f6b7 100644
--- a/java-gsuite-addons/proto-google-cloud-gsuite-addons-v1/src/main/java/com/google/cloud/gsuiteaddons/v1/InstallStatusName.java
+++ b/java-gsuite-addons/proto-google-cloud-gsuite-addons-v1/src/main/java/com/google/cloud/gsuiteaddons/v1/InstallStatusName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstallStatusName implements ResourceName {
   private static final PathTemplate PROJECT_DEPLOYMENT =
diff --git a/java-gsuite-addons/proto-google-cloud-gsuite-addons-v1/src/main/java/com/google/cloud/gsuiteaddons/v1/ProjectName.java b/java-gsuite-addons/proto-google-cloud-gsuite-addons-v1/src/main/java/com/google/cloud/gsuiteaddons/v1/ProjectName.java
index 6129ea8b143f..e15b06ec1a09 100644
--- a/java-gsuite-addons/proto-google-cloud-gsuite-addons-v1/src/main/java/com/google/cloud/gsuiteaddons/v1/ProjectName.java
+++ b/java-gsuite-addons/proto-google-cloud-gsuite-addons-v1/src/main/java/com/google/cloud/gsuiteaddons/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/DataPointsServiceClient.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/DataPointsServiceClient.java
index 1aa4ac34cef2..12757b28f44b 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/DataPointsServiceClient.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/DataPointsServiceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -286,6 +287,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataPointsServiceClient implements BackgroundResource {
   private final DataPointsServiceSettings settings;
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/DataPointsServiceSettings.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/DataPointsServiceSettings.java
index 3a64fc7585fe..bd7f7e3b5167 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/DataPointsServiceSettings.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/DataPointsServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataPointsServiceSettings extends ClientSettings<DataPointsServiceSettings> {
 
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/DataSubscriptionServiceClient.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/DataSubscriptionServiceClient.java
index 957671a2a19c..3a9966b6147a 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/DataSubscriptionServiceClient.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/DataSubscriptionServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -295,6 +296,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataSubscriptionServiceClient implements BackgroundResource {
   private final DataSubscriptionServiceSettings settings;
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/DataSubscriptionServiceSettings.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/DataSubscriptionServiceSettings.java
index abe36384c13f..6464590b5b97 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/DataSubscriptionServiceSettings.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/DataSubscriptionServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataSubscriptionServiceSettings
     extends ClientSettings<DataSubscriptionServiceSettings> {
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/HealthProfileServiceClient.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/HealthProfileServiceClient.java
index 13c47eab316d..677e03fdcb52 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/HealthProfileServiceClient.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/HealthProfileServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -274,6 +275,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HealthProfileServiceClient implements BackgroundResource {
   private final HealthProfileServiceSettings settings;
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/HealthProfileServiceSettings.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/HealthProfileServiceSettings.java
index 8e1ac27aeb90..3675b0e6516c 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/HealthProfileServiceSettings.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/HealthProfileServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HealthProfileServiceSettings extends ClientSettings<HealthProfileServiceSettings> {
 
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/DataPointsServiceStub.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/DataPointsServiceStub.java
index ef530394eaf0..3f93c787ce71 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/DataPointsServiceStub.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/DataPointsServiceStub.java
@@ -45,6 +45,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataPointsServiceStub implements BackgroundResource {
 
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/DataPointsServiceStubSettings.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/DataPointsServiceStubSettings.java
index 0fbfa96c1a6c..f451b5d1bef9 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/DataPointsServiceStubSettings.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/DataPointsServiceStubSettings.java
@@ -81,6 +81,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -159,6 +160,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataPointsServiceStubSettings extends StubSettings<DataPointsServiceStubSettings> {
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/DataSubscriptionServiceStub.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/DataSubscriptionServiceStub.java
index a448dc2ebf46..c61b64698fe9 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/DataSubscriptionServiceStub.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/DataSubscriptionServiceStub.java
@@ -41,6 +41,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataSubscriptionServiceStub implements BackgroundResource {
 
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/DataSubscriptionServiceStubSettings.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/DataSubscriptionServiceStubSettings.java
index 6638d8536a59..bbbbfb0d60c0 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/DataSubscriptionServiceStubSettings.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/DataSubscriptionServiceStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataSubscriptionServiceStubSettings
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcDataPointsServiceCallableFactory.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcDataPointsServiceCallableFactory.java
index dcca95231e56..431287fbb1b0 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcDataPointsServiceCallableFactory.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcDataPointsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataPointsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcDataPointsServiceStub.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcDataPointsServiceStub.java
index dd0d63ddab47..64ce9137d81a 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcDataPointsServiceStub.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcDataPointsServiceStub.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataPointsServiceStub extends DataPointsServiceStub {
   private static final MethodDescriptor<GetDataPointRequest, DataPoint>
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcDataSubscriptionServiceCallableFactory.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcDataSubscriptionServiceCallableFactory.java
index 07ebd90b4c1d..cef18f63639a 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcDataSubscriptionServiceCallableFactory.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcDataSubscriptionServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataSubscriptionServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcDataSubscriptionServiceStub.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcDataSubscriptionServiceStub.java
index b7cc709f2781..8a43c33e86a3 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcDataSubscriptionServiceStub.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcDataSubscriptionServiceStub.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataSubscriptionServiceStub extends DataSubscriptionServiceStub {
   private static final MethodDescriptor<CreateSubscriberRequest, Operation>
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcHealthProfileServiceCallableFactory.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcHealthProfileServiceCallableFactory.java
index fcadf6540d5a..e464063bcd81 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcHealthProfileServiceCallableFactory.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcHealthProfileServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcHealthProfileServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcHealthProfileServiceStub.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcHealthProfileServiceStub.java
index 2ec1942e8a26..8b5c8706767e 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcHealthProfileServiceStub.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/GrpcHealthProfileServiceStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcHealthProfileServiceStub extends HealthProfileServiceStub {
   private static final MethodDescriptor<GetProfileRequest, Profile> getProfileMethodDescriptor =
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HealthProfileServiceStub.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HealthProfileServiceStub.java
index e4e680d591c9..06518a88b397 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HealthProfileServiceStub.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HealthProfileServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.devicesandservices.health.v4.UpdateProfileRequest;
 import com.google.devicesandservices.health.v4.UpdateSettingsRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class HealthProfileServiceStub implements BackgroundResource {
 
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HealthProfileServiceStubSettings.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HealthProfileServiceStubSettings.java
index f5026a6eb7c3..72ac47184425 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HealthProfileServiceStubSettings.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HealthProfileServiceStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class HealthProfileServiceStubSettings
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonDataPointsServiceCallableFactory.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonDataPointsServiceCallableFactory.java
index f1d2a3a57d35..d8be9a78de9d 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonDataPointsServiceCallableFactory.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonDataPointsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataPointsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonDataPointsServiceStub.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonDataPointsServiceStub.java
index ab5a505026e4..289026269a48 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonDataPointsServiceStub.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonDataPointsServiceStub.java
@@ -63,6 +63,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataPointsServiceStub extends DataPointsServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonDataSubscriptionServiceCallableFactory.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonDataSubscriptionServiceCallableFactory.java
index 80bb4c52e8b6..ea40f8e7f328 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonDataSubscriptionServiceCallableFactory.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonDataSubscriptionServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataSubscriptionServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonDataSubscriptionServiceStub.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonDataSubscriptionServiceStub.java
index bf51fe359c97..e6768c2154c6 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonDataSubscriptionServiceStub.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonDataSubscriptionServiceStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataSubscriptionServiceStub extends DataSubscriptionServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonHealthProfileServiceCallableFactory.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonHealthProfileServiceCallableFactory.java
index 969dda7c9ee8..1b8eff72f31e 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonHealthProfileServiceCallableFactory.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonHealthProfileServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonHealthProfileServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonHealthProfileServiceStub.java b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonHealthProfileServiceStub.java
index 910dd51f1427..0250630007b2 100644
--- a/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonHealthProfileServiceStub.java
+++ b/java-health/google-cloud-health/src/main/java/com/google/devicesandservices/health/v4/stub/HttpJsonHealthProfileServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonHealthProfileServiceStub extends HealthProfileServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/DataPointName.java b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/DataPointName.java
index 199c00f2bb78..19b2132c0b6e 100644
--- a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/DataPointName.java
+++ b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/DataPointName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataPointName implements ResourceName {
   private static final PathTemplate USER_DATA_TYPE_DATA_POINT =
diff --git a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/DataTypeName.java b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/DataTypeName.java
index 5e697042d91a..d071f9313ecc 100644
--- a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/DataTypeName.java
+++ b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/DataTypeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataTypeName implements ResourceName {
   private static final PathTemplate USER_DATA_TYPE =
diff --git a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/IdentityName.java b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/IdentityName.java
index 21ce58a5aa1a..8c6f7f8b937d 100644
--- a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/IdentityName.java
+++ b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/IdentityName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IdentityName implements ResourceName {
   private static final PathTemplate USER =
diff --git a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/IrnProfileName.java b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/IrnProfileName.java
index 432e54da847d..81a969e674c9 100644
--- a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/IrnProfileName.java
+++ b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/IrnProfileName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IrnProfileName implements ResourceName {
   private static final PathTemplate USER =
diff --git a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/PairedDeviceName.java b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/PairedDeviceName.java
index 804cb681e29d..02a9e1e4185c 100644
--- a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/PairedDeviceName.java
+++ b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/PairedDeviceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PairedDeviceName implements ResourceName {
   private static final PathTemplate USER_PAIRED_DEVICE =
diff --git a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/ProfileName.java b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/ProfileName.java
index cb7f3e32e524..c3b29f7d6a23 100644
--- a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/ProfileName.java
+++ b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/ProfileName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProfileName implements ResourceName {
   private static final PathTemplate USER =
diff --git a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/ProjectName.java b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/ProjectName.java
index 13fa6242a9f8..8d7e3e33d469 100644
--- a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/ProjectName.java
+++ b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/SettingsName.java b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/SettingsName.java
index ea7815b2139f..7c109ad30471 100644
--- a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/SettingsName.java
+++ b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/SettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SettingsName implements ResourceName {
   private static final PathTemplate USER =
diff --git a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/SubscriberName.java b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/SubscriberName.java
index 40212f28e8db..4518c9ba7ba9 100644
--- a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/SubscriberName.java
+++ b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/SubscriberName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SubscriberName implements ResourceName {
   private static final PathTemplate PROJECT_SUBSCRIBER =
diff --git a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/SubscriptionName.java b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/SubscriptionName.java
index d83277af1b58..0bc13a2277c2 100644
--- a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/SubscriptionName.java
+++ b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/SubscriptionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SubscriptionName implements ResourceName {
   private static final PathTemplate PROJECT_SUBSCRIBER_SUBSCRIPTION =
diff --git a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/UserName.java b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/UserName.java
index 89c0fb6d558e..0ed88ae529fc 100644
--- a/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/UserName.java
+++ b/java-health/proto-google-cloud-health-v4/src/main/java/com/google/devicesandservices/health/v4/UserName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserName implements ResourceName {
   private static final PathTemplate USER = PathTemplate.createWithoutUrlEncoding("users/{user}");
diff --git a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/HypercomputeClusterClient.java b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/HypercomputeClusterClient.java
index 9db0162dfeba..a576de148dd1 100644
--- a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/HypercomputeClusterClient.java
+++ b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/HypercomputeClusterClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -259,6 +260,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HypercomputeClusterClient implements BackgroundResource {
   private final HypercomputeClusterSettings settings;
diff --git a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/HypercomputeClusterSettings.java b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/HypercomputeClusterSettings.java
index 20248788919f..2b41e384ae2e 100644
--- a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/HypercomputeClusterSettings.java
+++ b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/HypercomputeClusterSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HypercomputeClusterSettings extends ClientSettings<HypercomputeClusterSettings> {
 
diff --git a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/GrpcHypercomputeClusterCallableFactory.java b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/GrpcHypercomputeClusterCallableFactory.java
index 6a0b42950f06..cc91b50ec029 100644
--- a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/GrpcHypercomputeClusterCallableFactory.java
+++ b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/GrpcHypercomputeClusterCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcHypercomputeClusterCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/GrpcHypercomputeClusterStub.java b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/GrpcHypercomputeClusterStub.java
index 5321e25d2258..d6d8f109a649 100644
--- a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/GrpcHypercomputeClusterStub.java
+++ b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/GrpcHypercomputeClusterStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcHypercomputeClusterStub extends HypercomputeClusterStub {
   private static final MethodDescriptor<ListClustersRequest, ListClustersResponse>
diff --git a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/HttpJsonHypercomputeClusterCallableFactory.java b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/HttpJsonHypercomputeClusterCallableFactory.java
index 414173ddd556..a875be14f1bf 100644
--- a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/HttpJsonHypercomputeClusterCallableFactory.java
+++ b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/HttpJsonHypercomputeClusterCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonHypercomputeClusterCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/HttpJsonHypercomputeClusterStub.java b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/HttpJsonHypercomputeClusterStub.java
index ea5a8b2dd9ae..4e661c26fe27 100644
--- a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/HttpJsonHypercomputeClusterStub.java
+++ b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/HttpJsonHypercomputeClusterStub.java
@@ -58,6 +58,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonHypercomputeClusterStub extends HypercomputeClusterStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/HypercomputeClusterStub.java b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/HypercomputeClusterStub.java
index 53300ec4f117..b1b8a74c662b 100644
--- a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/HypercomputeClusterStub.java
+++ b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/HypercomputeClusterStub.java
@@ -38,6 +38,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class HypercomputeClusterStub implements BackgroundResource {
 
diff --git a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/HypercomputeClusterStubSettings.java b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/HypercomputeClusterStubSettings.java
index 374a517f6bf3..5a87475b5e74 100644
--- a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/HypercomputeClusterStubSettings.java
+++ b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1/stub/HypercomputeClusterStubSettings.java
@@ -72,6 +72,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class HypercomputeClusterStubSettings extends StubSettings<HypercomputeClusterStubSettings> {
diff --git a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/HypercomputeClusterClient.java b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/HypercomputeClusterClient.java
index 535df672aaea..33a8206c99e8 100644
--- a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/HypercomputeClusterClient.java
+++ b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/HypercomputeClusterClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -258,6 +259,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HypercomputeClusterClient implements BackgroundResource {
diff --git a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/HypercomputeClusterSettings.java b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/HypercomputeClusterSettings.java
index b641a5fcf8a3..2f9afcc879b2 100644
--- a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/HypercomputeClusterSettings.java
+++ b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/HypercomputeClusterSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HypercomputeClusterSettings extends ClientSettings<HypercomputeClusterSettings> {
diff --git a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/GrpcHypercomputeClusterCallableFactory.java b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/GrpcHypercomputeClusterCallableFactory.java
index 4a3172e93751..43ddf2a000b4 100644
--- a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/GrpcHypercomputeClusterCallableFactory.java
+++ b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/GrpcHypercomputeClusterCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcHypercomputeClusterCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/GrpcHypercomputeClusterStub.java b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/GrpcHypercomputeClusterStub.java
index 757f2b995f6c..d5b1a787773f 100644
--- a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/GrpcHypercomputeClusterStub.java
+++ b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/GrpcHypercomputeClusterStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcHypercomputeClusterStub extends HypercomputeClusterStub {
diff --git a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/HttpJsonHypercomputeClusterCallableFactory.java b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/HttpJsonHypercomputeClusterCallableFactory.java
index 293419b820aa..829590402127 100644
--- a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/HttpJsonHypercomputeClusterCallableFactory.java
+++ b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/HttpJsonHypercomputeClusterCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonHypercomputeClusterCallableFactory
diff --git a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/HttpJsonHypercomputeClusterStub.java b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/HttpJsonHypercomputeClusterStub.java
index b75e8ebe9c9f..e36f0ec99199 100644
--- a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/HttpJsonHypercomputeClusterStub.java
+++ b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/HttpJsonHypercomputeClusterStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonHypercomputeClusterStub extends HypercomputeClusterStub {
diff --git a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/HypercomputeClusterStub.java b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/HypercomputeClusterStub.java
index 5122e91a6818..bf19c0acc733 100644
--- a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/HypercomputeClusterStub.java
+++ b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/HypercomputeClusterStub.java
@@ -39,6 +39,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class HypercomputeClusterStub implements BackgroundResource {
diff --git a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/HypercomputeClusterStubSettings.java b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/HypercomputeClusterStubSettings.java
index 2ce56b3b54e6..04c738739aca 100644
--- a/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/HypercomputeClusterStubSettings.java
+++ b/java-hypercomputecluster/google-cloud-hypercomputecluster/src/main/java/com/google/cloud/hypercomputecluster/v1beta/stub/HypercomputeClusterStubSettings.java
@@ -72,6 +72,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-hypercomputecluster/proto-google-cloud-hypercomputecluster-v1/src/main/java/com/google/cloud/hypercomputecluster/v1/ClusterName.java b/java-hypercomputecluster/proto-google-cloud-hypercomputecluster-v1/src/main/java/com/google/cloud/hypercomputecluster/v1/ClusterName.java
index 1722debab62a..210fe24c2d2a 100644
--- a/java-hypercomputecluster/proto-google-cloud-hypercomputecluster-v1/src/main/java/com/google/cloud/hypercomputecluster/v1/ClusterName.java
+++ b/java-hypercomputecluster/proto-google-cloud-hypercomputecluster-v1/src/main/java/com/google/cloud/hypercomputecluster/v1/ClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER =
diff --git a/java-hypercomputecluster/proto-google-cloud-hypercomputecluster-v1/src/main/java/com/google/cloud/hypercomputecluster/v1/LocationName.java b/java-hypercomputecluster/proto-google-cloud-hypercomputecluster-v1/src/main/java/com/google/cloud/hypercomputecluster/v1/LocationName.java
index 6d3106578a42..453594416c7e 100644
--- a/java-hypercomputecluster/proto-google-cloud-hypercomputecluster-v1/src/main/java/com/google/cloud/hypercomputecluster/v1/LocationName.java
+++ b/java-hypercomputecluster/proto-google-cloud-hypercomputecluster-v1/src/main/java/com/google/cloud/hypercomputecluster/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-hypercomputecluster/proto-google-cloud-hypercomputecluster-v1beta/src/main/java/com/google/cloud/hypercomputecluster/v1beta/ClusterName.java b/java-hypercomputecluster/proto-google-cloud-hypercomputecluster-v1beta/src/main/java/com/google/cloud/hypercomputecluster/v1beta/ClusterName.java
index 00193e89a279..95e74500b0ea 100644
--- a/java-hypercomputecluster/proto-google-cloud-hypercomputecluster-v1beta/src/main/java/com/google/cloud/hypercomputecluster/v1beta/ClusterName.java
+++ b/java-hypercomputecluster/proto-google-cloud-hypercomputecluster-v1beta/src/main/java/com/google/cloud/hypercomputecluster/v1beta/ClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER =
diff --git a/java-hypercomputecluster/proto-google-cloud-hypercomputecluster-v1beta/src/main/java/com/google/cloud/hypercomputecluster/v1beta/LocationName.java b/java-hypercomputecluster/proto-google-cloud-hypercomputecluster-v1beta/src/main/java/com/google/cloud/hypercomputecluster/v1beta/LocationName.java
index ed21f944580b..692ffc998bef 100644
--- a/java-hypercomputecluster/proto-google-cloud-hypercomputecluster-v1beta/src/main/java/com/google/cloud/hypercomputecluster/v1beta/LocationName.java
+++ b/java-hypercomputecluster/proto-google-cloud-hypercomputecluster-v1beta/src/main/java/com/google/cloud/hypercomputecluster/v1beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/IAMClient.java b/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/IAMClient.java
index c7bc480216ae..3ee61ec51f4d 100644
--- a/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/IAMClient.java
+++ b/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/IAMClient.java
@@ -86,6 +86,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -735,6 +736,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IAMClient implements BackgroundResource {
   private final IAMSettings settings;
diff --git a/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/IAMSettings.java b/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/IAMSettings.java
index bfb92a085cb2..5e3f790b83f4 100644
--- a/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/IAMSettings.java
+++ b/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/IAMSettings.java
@@ -81,6 +81,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IAMSettings extends ClientSettings<IAMSettings> {
 
diff --git a/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/stub/GrpcIAMCallableFactory.java b/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/stub/GrpcIAMCallableFactory.java
index 453a7bbaf937..6f0ec194f157 100644
--- a/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/stub/GrpcIAMCallableFactory.java
+++ b/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/stub/GrpcIAMCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIAMCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/stub/GrpcIAMStub.java b/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/stub/GrpcIAMStub.java
index 067821eea298..586d92a03f01 100644
--- a/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/stub/GrpcIAMStub.java
+++ b/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/stub/GrpcIAMStub.java
@@ -80,6 +80,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIAMStub extends IAMStub {
   private static final MethodDescriptor<ListServiceAccountsRequest, ListServiceAccountsResponse>
diff --git a/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/stub/IAMStub.java b/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/stub/IAMStub.java
index a9fc20f22b65..d96c56c8bc80 100644
--- a/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/stub/IAMStub.java
+++ b/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/stub/IAMStub.java
@@ -70,6 +70,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class IAMStub implements BackgroundResource {
 
diff --git a/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/stub/IAMStubSettings.java b/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/stub/IAMStubSettings.java
index c3281a26b069..1877bcecea68 100644
--- a/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/stub/IAMStubSettings.java
+++ b/java-iam-admin/google-iam-admin/src/main/java/com/google/cloud/iam/admin/v1/stub/IAMStubSettings.java
@@ -99,6 +99,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -149,6 +150,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class IAMStubSettings extends StubSettings<IAMStubSettings> {
diff --git a/java-iam-admin/proto-google-iam-admin-v1/src/main/java/com/google/iam/admin/v1/KeyName.java b/java-iam-admin/proto-google-iam-admin-v1/src/main/java/com/google/iam/admin/v1/KeyName.java
index 34c01536232d..938270be42d2 100644
--- a/java-iam-admin/proto-google-iam-admin-v1/src/main/java/com/google/iam/admin/v1/KeyName.java
+++ b/java-iam-admin/proto-google-iam-admin-v1/src/main/java/com/google/iam/admin/v1/KeyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class KeyName implements ResourceName {
   private static final PathTemplate PROJECT_SERVICE_ACCOUNT_KEY =
diff --git a/java-iam-admin/proto-google-iam-admin-v1/src/main/java/com/google/iam/admin/v1/ProjectName.java b/java-iam-admin/proto-google-iam-admin-v1/src/main/java/com/google/iam/admin/v1/ProjectName.java
index e66d8cea5805..ea20c21d9133 100644
--- a/java-iam-admin/proto-google-iam-admin-v1/src/main/java/com/google/iam/admin/v1/ProjectName.java
+++ b/java-iam-admin/proto-google-iam-admin-v1/src/main/java/com/google/iam/admin/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-iam-admin/proto-google-iam-admin-v1/src/main/java/com/google/iam/admin/v1/ServiceAccountName.java b/java-iam-admin/proto-google-iam-admin-v1/src/main/java/com/google/iam/admin/v1/ServiceAccountName.java
index eff8f851c6de..ae71b2f21a43 100644
--- a/java-iam-admin/proto-google-iam-admin-v1/src/main/java/com/google/iam/admin/v1/ServiceAccountName.java
+++ b/java-iam-admin/proto-google-iam-admin-v1/src/main/java/com/google/iam/admin/v1/ServiceAccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceAccountName implements ResourceName {
   private static final PathTemplate PROJECT_SERVICE_ACCOUNT =
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/PoliciesClient.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/PoliciesClient.java
index b0a621c066ad..8b5753bef2f0 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/PoliciesClient.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/PoliciesClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -215,6 +216,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PoliciesClient implements BackgroundResource {
   private final PoliciesSettings settings;
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/PoliciesSettings.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/PoliciesSettings.java
index 3370fde3c445..3cbcf033d481 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/PoliciesSettings.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/PoliciesSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PoliciesSettings extends ClientSettings<PoliciesSettings> {
 
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/GrpcPoliciesCallableFactory.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/GrpcPoliciesCallableFactory.java
index 0e26dc4b9c6a..fbc1f6dcad6b 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/GrpcPoliciesCallableFactory.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/GrpcPoliciesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPoliciesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/GrpcPoliciesStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/GrpcPoliciesStub.java
index 076e54c7ebce..bdacd3756920 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/GrpcPoliciesStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/GrpcPoliciesStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPoliciesStub extends PoliciesStub {
   private static final MethodDescriptor<ListPoliciesRequest, ListPoliciesResponse>
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/HttpJsonPoliciesCallableFactory.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/HttpJsonPoliciesCallableFactory.java
index bfbc07907bc3..7d0effa8af22 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/HttpJsonPoliciesCallableFactory.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/HttpJsonPoliciesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPoliciesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/HttpJsonPoliciesStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/HttpJsonPoliciesStub.java
index fdd64661ab6b..ede5dda9a0ae 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/HttpJsonPoliciesStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/HttpJsonPoliciesStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPoliciesStub extends PoliciesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/PoliciesStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/PoliciesStub.java
index 213a718b3427..e6cf998040d6 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/PoliciesStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/PoliciesStub.java
@@ -32,6 +32,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PoliciesStub implements BackgroundResource {
 
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/PoliciesStubSettings.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/PoliciesStubSettings.java
index bc06946bfd82..5fd04d2c60b2 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/PoliciesStubSettings.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2/stub/PoliciesStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PoliciesStubSettings extends StubSettings<PoliciesStubSettings> {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/PoliciesClient.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/PoliciesClient.java
index 2d5f5ea986e2..2de253b558e3 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/PoliciesClient.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/PoliciesClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -215,6 +216,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PoliciesClient implements BackgroundResource {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/PoliciesSettings.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/PoliciesSettings.java
index 7ea2d4a3f288..bea6e4d502d5 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/PoliciesSettings.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/PoliciesSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PoliciesSettings extends ClientSettings<PoliciesSettings> {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/GrpcPoliciesCallableFactory.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/GrpcPoliciesCallableFactory.java
index 1ebd5683e9bd..0d1350f54f06 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/GrpcPoliciesCallableFactory.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/GrpcPoliciesCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPoliciesCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/GrpcPoliciesStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/GrpcPoliciesStub.java
index 4aa1906e1ef6..ff5c89844404 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/GrpcPoliciesStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/GrpcPoliciesStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPoliciesStub extends PoliciesStub {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/HttpJsonPoliciesCallableFactory.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/HttpJsonPoliciesCallableFactory.java
index 291c6f1cd462..9c5b0f9002bc 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/HttpJsonPoliciesCallableFactory.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/HttpJsonPoliciesCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPoliciesCallableFactory
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/HttpJsonPoliciesStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/HttpJsonPoliciesStub.java
index 2f9c4b32fc08..03b6ac8e5959 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/HttpJsonPoliciesStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/HttpJsonPoliciesStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPoliciesStub extends PoliciesStub {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/PoliciesStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/PoliciesStub.java
index 33cb024ed778..a86ff14cf350 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/PoliciesStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/PoliciesStub.java
@@ -33,6 +33,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PoliciesStub implements BackgroundResource {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/PoliciesStubSettings.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/PoliciesStubSettings.java
index b268bd4f11b8..750eec7ba571 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/PoliciesStubSettings.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v2beta/stub/PoliciesStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/PolicyBindingsClient.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/PolicyBindingsClient.java
index 3698883d934b..9b8bcfd42017 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/PolicyBindingsClient.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/PolicyBindingsClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -250,6 +251,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyBindingsClient implements BackgroundResource {
   private final PolicyBindingsSettings settings;
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/PolicyBindingsSettings.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/PolicyBindingsSettings.java
index c906bf2e7d94..d72b4378ae53 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/PolicyBindingsSettings.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/PolicyBindingsSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyBindingsSettings extends ClientSettings<PolicyBindingsSettings> {
 
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/PrincipalAccessBoundaryPoliciesClient.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/PrincipalAccessBoundaryPoliciesClient.java
index f2fedfe57573..161f66aa7aea 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/PrincipalAccessBoundaryPoliciesClient.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/PrincipalAccessBoundaryPoliciesClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -250,6 +251,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PrincipalAccessBoundaryPoliciesClient implements BackgroundResource {
   private final PrincipalAccessBoundaryPoliciesSettings settings;
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/PrincipalAccessBoundaryPoliciesSettings.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/PrincipalAccessBoundaryPoliciesSettings.java
index 0155296265fb..de436b6ecc66 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/PrincipalAccessBoundaryPoliciesSettings.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/PrincipalAccessBoundaryPoliciesSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PrincipalAccessBoundaryPoliciesSettings
     extends ClientSettings<PrincipalAccessBoundaryPoliciesSettings> {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/GrpcPolicyBindingsCallableFactory.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/GrpcPolicyBindingsCallableFactory.java
index 35e716541277..e13a98484368 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/GrpcPolicyBindingsCallableFactory.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/GrpcPolicyBindingsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPolicyBindingsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/GrpcPolicyBindingsStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/GrpcPolicyBindingsStub.java
index 009deac57c2d..7860467c4265 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/GrpcPolicyBindingsStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/GrpcPolicyBindingsStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPolicyBindingsStub extends PolicyBindingsStub {
   private static final MethodDescriptor<CreatePolicyBindingRequest, Operation>
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/GrpcPrincipalAccessBoundaryPoliciesCallableFactory.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/GrpcPrincipalAccessBoundaryPoliciesCallableFactory.java
index 97442bac46bb..f2714fbfd4f4 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/GrpcPrincipalAccessBoundaryPoliciesCallableFactory.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/GrpcPrincipalAccessBoundaryPoliciesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPrincipalAccessBoundaryPoliciesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/GrpcPrincipalAccessBoundaryPoliciesStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/GrpcPrincipalAccessBoundaryPoliciesStub.java
index 9795fb580dc9..3303206a03ba 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/GrpcPrincipalAccessBoundaryPoliciesStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/GrpcPrincipalAccessBoundaryPoliciesStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPrincipalAccessBoundaryPoliciesStub extends PrincipalAccessBoundaryPoliciesStub {
   private static final MethodDescriptor<CreatePrincipalAccessBoundaryPolicyRequest, Operation>
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/HttpJsonPolicyBindingsCallableFactory.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/HttpJsonPolicyBindingsCallableFactory.java
index 4036c8ef212d..9bc0b8de7777 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/HttpJsonPolicyBindingsCallableFactory.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/HttpJsonPolicyBindingsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPolicyBindingsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/HttpJsonPolicyBindingsStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/HttpJsonPolicyBindingsStub.java
index 8f9610a50dc9..3d1de06fc63c 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/HttpJsonPolicyBindingsStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/HttpJsonPolicyBindingsStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPolicyBindingsStub extends PolicyBindingsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/HttpJsonPrincipalAccessBoundaryPoliciesCallableFactory.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/HttpJsonPrincipalAccessBoundaryPoliciesCallableFactory.java
index 4f13e16dd0f0..857923c529f8 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/HttpJsonPrincipalAccessBoundaryPoliciesCallableFactory.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/HttpJsonPrincipalAccessBoundaryPoliciesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPrincipalAccessBoundaryPoliciesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/HttpJsonPrincipalAccessBoundaryPoliciesStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/HttpJsonPrincipalAccessBoundaryPoliciesStub.java
index d872adbf00fb..5b4972bf7b4c 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/HttpJsonPrincipalAccessBoundaryPoliciesStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/HttpJsonPrincipalAccessBoundaryPoliciesStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPrincipalAccessBoundaryPoliciesStub
     extends PrincipalAccessBoundaryPoliciesStub {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/PolicyBindingsStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/PolicyBindingsStub.java
index f3125d573d5c..90947138c71d 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/PolicyBindingsStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/PolicyBindingsStub.java
@@ -36,6 +36,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PolicyBindingsStub implements BackgroundResource {
 
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/PolicyBindingsStubSettings.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/PolicyBindingsStubSettings.java
index e9bd4a7254f4..2495f161a0e2 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/PolicyBindingsStubSettings.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/PolicyBindingsStubSettings.java
@@ -70,6 +70,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PolicyBindingsStubSettings extends StubSettings<PolicyBindingsStubSettings> {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/PrincipalAccessBoundaryPoliciesStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/PrincipalAccessBoundaryPoliciesStub.java
index e2b023d6b35a..14a4be05da05 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/PrincipalAccessBoundaryPoliciesStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/PrincipalAccessBoundaryPoliciesStub.java
@@ -36,6 +36,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PrincipalAccessBoundaryPoliciesStub implements BackgroundResource {
 
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/PrincipalAccessBoundaryPoliciesStubSettings.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/PrincipalAccessBoundaryPoliciesStubSettings.java
index f02e4e7217f6..060e55f8c890 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/PrincipalAccessBoundaryPoliciesStubSettings.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3/stub/PrincipalAccessBoundaryPoliciesStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PrincipalAccessBoundaryPoliciesStubSettings
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/AccessPoliciesClient.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/AccessPoliciesClient.java
index 1282ba1ee63e..cc67b197c9ca 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/AccessPoliciesClient.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/AccessPoliciesClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -242,6 +243,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AccessPoliciesClient implements BackgroundResource {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/AccessPoliciesSettings.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/AccessPoliciesSettings.java
index 9c507387ae43..012bdc2b2e82 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/AccessPoliciesSettings.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/AccessPoliciesSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AccessPoliciesSettings extends ClientSettings<AccessPoliciesSettings> {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/PolicyBindingsClient.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/PolicyBindingsClient.java
index bdbb193f30ed..f947390a1e87 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/PolicyBindingsClient.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/PolicyBindingsClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -250,6 +251,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PolicyBindingsClient implements BackgroundResource {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/PolicyBindingsSettings.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/PolicyBindingsSettings.java
index e6a1e7078a32..391b2ec884a0 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/PolicyBindingsSettings.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/PolicyBindingsSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PolicyBindingsSettings extends ClientSettings<PolicyBindingsSettings> {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/PrincipalAccessBoundaryPoliciesClient.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/PrincipalAccessBoundaryPoliciesClient.java
index c4d396cd789e..3157fe0baad5 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/PrincipalAccessBoundaryPoliciesClient.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/PrincipalAccessBoundaryPoliciesClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -250,6 +251,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PrincipalAccessBoundaryPoliciesClient implements BackgroundResource {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/PrincipalAccessBoundaryPoliciesSettings.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/PrincipalAccessBoundaryPoliciesSettings.java
index c02c51a815c9..a22a3fc5fbd1 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/PrincipalAccessBoundaryPoliciesSettings.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/PrincipalAccessBoundaryPoliciesSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PrincipalAccessBoundaryPoliciesSettings
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/AccessPoliciesStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/AccessPoliciesStub.java
index d35b59bf7ec0..bfa96df1e281 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/AccessPoliciesStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/AccessPoliciesStub.java
@@ -37,6 +37,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AccessPoliciesStub implements BackgroundResource {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/AccessPoliciesStubSettings.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/AccessPoliciesStubSettings.java
index 97fb29f36578..a1a5a24989f6 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/AccessPoliciesStubSettings.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/AccessPoliciesStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcAccessPoliciesCallableFactory.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcAccessPoliciesCallableFactory.java
index db77a15c6496..5a89ef739ef3 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcAccessPoliciesCallableFactory.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcAccessPoliciesCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAccessPoliciesCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcAccessPoliciesStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcAccessPoliciesStub.java
index 14bc950176aa..7eb9826796f6 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcAccessPoliciesStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcAccessPoliciesStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAccessPoliciesStub extends AccessPoliciesStub {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcPolicyBindingsCallableFactory.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcPolicyBindingsCallableFactory.java
index 4fac37756265..2eec325f7bc1 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcPolicyBindingsCallableFactory.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcPolicyBindingsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPolicyBindingsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcPolicyBindingsStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcPolicyBindingsStub.java
index 67e9842d2dc2..641c0f4d5545 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcPolicyBindingsStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcPolicyBindingsStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPolicyBindingsStub extends PolicyBindingsStub {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcPrincipalAccessBoundaryPoliciesCallableFactory.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcPrincipalAccessBoundaryPoliciesCallableFactory.java
index 3d1853d5a8c0..51da719dedf8 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcPrincipalAccessBoundaryPoliciesCallableFactory.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcPrincipalAccessBoundaryPoliciesCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPrincipalAccessBoundaryPoliciesCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcPrincipalAccessBoundaryPoliciesStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcPrincipalAccessBoundaryPoliciesStub.java
index 0aeb5c727b47..ead4c6009ab9 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcPrincipalAccessBoundaryPoliciesStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/GrpcPrincipalAccessBoundaryPoliciesStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPrincipalAccessBoundaryPoliciesStub extends PrincipalAccessBoundaryPoliciesStub {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonAccessPoliciesCallableFactory.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonAccessPoliciesCallableFactory.java
index 303e258c811d..3a02e126a8ad 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonAccessPoliciesCallableFactory.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonAccessPoliciesCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAccessPoliciesCallableFactory
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonAccessPoliciesStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonAccessPoliciesStub.java
index f5b434b1a910..1d4e657aa17c 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonAccessPoliciesStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonAccessPoliciesStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAccessPoliciesStub extends AccessPoliciesStub {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonPolicyBindingsCallableFactory.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonPolicyBindingsCallableFactory.java
index 23da209d3db7..5c3af13faf26 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonPolicyBindingsCallableFactory.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonPolicyBindingsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPolicyBindingsCallableFactory
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonPolicyBindingsStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonPolicyBindingsStub.java
index 98243b2994e8..4df82603a6f7 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonPolicyBindingsStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonPolicyBindingsStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPolicyBindingsStub extends PolicyBindingsStub {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonPrincipalAccessBoundaryPoliciesCallableFactory.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonPrincipalAccessBoundaryPoliciesCallableFactory.java
index 64fd6a370b37..72928fe530ac 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonPrincipalAccessBoundaryPoliciesCallableFactory.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonPrincipalAccessBoundaryPoliciesCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPrincipalAccessBoundaryPoliciesCallableFactory
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonPrincipalAccessBoundaryPoliciesStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonPrincipalAccessBoundaryPoliciesStub.java
index 59b0e60fb9ee..4e16bd777754 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonPrincipalAccessBoundaryPoliciesStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/HttpJsonPrincipalAccessBoundaryPoliciesStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPrincipalAccessBoundaryPoliciesStub
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/PolicyBindingsStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/PolicyBindingsStub.java
index 1ab8d32e541c..c0b7ba812156 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/PolicyBindingsStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/PolicyBindingsStub.java
@@ -37,6 +37,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PolicyBindingsStub implements BackgroundResource {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/PolicyBindingsStubSettings.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/PolicyBindingsStubSettings.java
index 3953bfc85def..73ca2b1587f2 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/PolicyBindingsStubSettings.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/PolicyBindingsStubSettings.java
@@ -70,6 +70,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/PrincipalAccessBoundaryPoliciesStub.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/PrincipalAccessBoundaryPoliciesStub.java
index 5cf2decd6741..3d822e81b4d2 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/PrincipalAccessBoundaryPoliciesStub.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/PrincipalAccessBoundaryPoliciesStub.java
@@ -37,6 +37,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PrincipalAccessBoundaryPoliciesStub implements BackgroundResource {
diff --git a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/PrincipalAccessBoundaryPoliciesStubSettings.java b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/PrincipalAccessBoundaryPoliciesStubSettings.java
index 60fe9fa7aa92..a0a9f4adf064 100644
--- a/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/PrincipalAccessBoundaryPoliciesStubSettings.java
+++ b/java-iam-policy/google-iam-policy/src/main/java/com/google/iam/v3beta/stub/PrincipalAccessBoundaryPoliciesStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/FolderLocationName.java b/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/FolderLocationName.java
index 6d7ef2b63973..bfdf6315d2a7 100644
--- a/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/FolderLocationName.java
+++ b/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/FolderLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderLocationName implements ResourceName {
   private static final PathTemplate FOLDER_LOCATION =
diff --git a/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/LocationName.java b/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/LocationName.java
index bdd37004f088..2c47b7d74541 100644
--- a/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/LocationName.java
+++ b/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/OrganizationLocationName.java b/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/OrganizationLocationName.java
index a0cdbb6aa0e6..abb160bc7e2e 100644
--- a/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/OrganizationLocationName.java
+++ b/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/OrganizationLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationLocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/PolicyBindingName.java b/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/PolicyBindingName.java
index 6bd5c89a0b30..e24f379b80c2 100644
--- a/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/PolicyBindingName.java
+++ b/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/PolicyBindingName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyBindingName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_POLICY_BINDING =
diff --git a/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/PrincipalAccessBoundaryPolicyName.java b/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/PrincipalAccessBoundaryPolicyName.java
index ef07cb8b17ec..1bed80304348 100644
--- a/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/PrincipalAccessBoundaryPolicyName.java
+++ b/java-iam/proto-google-iam-v3/src/main/java/com/google/iam/v3/PrincipalAccessBoundaryPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PrincipalAccessBoundaryPolicyName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_PRINCIPAL_ACCESS_BOUNDARY_POLICY =
diff --git a/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/AccessPolicyName.java b/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/AccessPolicyName.java
index 0a531712f829..1abbea5386ba 100644
--- a/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/AccessPolicyName.java
+++ b/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/AccessPolicyName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccessPolicyName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_ACCESS_POLICY =
diff --git a/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/FolderLocationName.java b/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/FolderLocationName.java
index 052e3ef04376..850e3816f944 100644
--- a/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/FolderLocationName.java
+++ b/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/FolderLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderLocationName implements ResourceName {
   private static final PathTemplate FOLDER_LOCATION =
diff --git a/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/LocationName.java b/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/LocationName.java
index 19a5b6f85a09..bc2327b88e71 100644
--- a/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/LocationName.java
+++ b/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/OrganizationLocationName.java b/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/OrganizationLocationName.java
index 8a521b39bd02..2a34aab86581 100644
--- a/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/OrganizationLocationName.java
+++ b/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/OrganizationLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationLocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/PolicyBindingName.java b/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/PolicyBindingName.java
index e8e733b99898..292b124f1738 100644
--- a/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/PolicyBindingName.java
+++ b/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/PolicyBindingName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyBindingName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_POLICY_BINDING =
diff --git a/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/PrincipalAccessBoundaryPolicyName.java b/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/PrincipalAccessBoundaryPolicyName.java
index 313e6422fabb..8cc1fa2d2f1d 100644
--- a/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/PrincipalAccessBoundaryPolicyName.java
+++ b/java-iam/proto-google-iam-v3beta/src/main/java/com/google/iam/v3beta/PrincipalAccessBoundaryPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PrincipalAccessBoundaryPolicyName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_PRINCIPAL_ACCESS_BOUNDARY_POLICY =
diff --git a/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/IamCredentialsClient.java b/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/IamCredentialsClient.java
index 9480ea267ada..809d9f7bc606 100644
--- a/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/IamCredentialsClient.java
+++ b/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/IamCredentialsClient.java
@@ -26,6 +26,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -198,6 +199,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IamCredentialsClient implements BackgroundResource {
   private final IamCredentialsSettings settings;
diff --git a/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/IamCredentialsSettings.java b/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/IamCredentialsSettings.java
index 3e1e3a5c1dd9..a7752beb220f 100644
--- a/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/IamCredentialsSettings.java
+++ b/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/IamCredentialsSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IamCredentialsSettings extends ClientSettings<IamCredentialsSettings> {
 
diff --git a/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/GrpcIamCredentialsCallableFactory.java b/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/GrpcIamCredentialsCallableFactory.java
index 719369a4a764..37097115994c 100644
--- a/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/GrpcIamCredentialsCallableFactory.java
+++ b/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/GrpcIamCredentialsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIamCredentialsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/GrpcIamCredentialsStub.java b/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/GrpcIamCredentialsStub.java
index d2285cbc5f4c..9439dab8acef 100644
--- a/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/GrpcIamCredentialsStub.java
+++ b/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/GrpcIamCredentialsStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIamCredentialsStub extends IamCredentialsStub {
   private static final MethodDescriptor<GenerateAccessTokenRequest, GenerateAccessTokenResponse>
diff --git a/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/HttpJsonIamCredentialsCallableFactory.java b/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/HttpJsonIamCredentialsCallableFactory.java
index fcd9f51b7a58..9de801ce60a8 100644
--- a/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/HttpJsonIamCredentialsCallableFactory.java
+++ b/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/HttpJsonIamCredentialsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIamCredentialsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/HttpJsonIamCredentialsStub.java b/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/HttpJsonIamCredentialsStub.java
index 979fd23d1103..5acc718825c6 100644
--- a/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/HttpJsonIamCredentialsStub.java
+++ b/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/HttpJsonIamCredentialsStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIamCredentialsStub extends IamCredentialsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/IamCredentialsStub.java b/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/IamCredentialsStub.java
index e7a22e224f0e..3558f1c6f5e0 100644
--- a/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/IamCredentialsStub.java
+++ b/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/IamCredentialsStub.java
@@ -27,6 +27,7 @@
 import com.google.cloud.iam.credentials.v1.SignJwtRequest;
 import com.google.cloud.iam.credentials.v1.SignJwtResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class IamCredentialsStub implements BackgroundResource {
 
diff --git a/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/IamCredentialsStubSettings.java b/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/IamCredentialsStubSettings.java
index 705b68057442..1984c39278c8 100644
--- a/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/IamCredentialsStubSettings.java
+++ b/java-iamcredentials/google-cloud-iamcredentials/src/main/java/com/google/cloud/iam/credentials/v1/stub/IamCredentialsStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class IamCredentialsStubSettings extends StubSettings<IamCredentialsStubSettings> {
diff --git a/java-iamcredentials/proto-google-cloud-iamcredentials-v1/src/main/java/com/google/cloud/iam/credentials/v1/ServiceAccountName.java b/java-iamcredentials/proto-google-cloud-iamcredentials-v1/src/main/java/com/google/cloud/iam/credentials/v1/ServiceAccountName.java
index d538857c2abd..29071fff8871 100644
--- a/java-iamcredentials/proto-google-cloud-iamcredentials-v1/src/main/java/com/google/cloud/iam/credentials/v1/ServiceAccountName.java
+++ b/java-iamcredentials/proto-google-cloud-iamcredentials-v1/src/main/java/com/google/cloud/iam/credentials/v1/ServiceAccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceAccountName implements ResourceName {
   private static final PathTemplate PROJECT_SERVICE_ACCOUNT =
diff --git a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/IdentityAwareProxyAdminServiceClient.java b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/IdentityAwareProxyAdminServiceClient.java
index 0f503dca4ec8..fabd76f1da6a 100644
--- a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/IdentityAwareProxyAdminServiceClient.java
+++ b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/IdentityAwareProxyAdminServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -313,6 +314,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IdentityAwareProxyAdminServiceClient implements BackgroundResource {
   private final IdentityAwareProxyAdminServiceSettings settings;
diff --git a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/IdentityAwareProxyAdminServiceSettings.java b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/IdentityAwareProxyAdminServiceSettings.java
index 75f890195515..b87b0888cf5f 100644
--- a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/IdentityAwareProxyAdminServiceSettings.java
+++ b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/IdentityAwareProxyAdminServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IdentityAwareProxyAdminServiceSettings
     extends ClientSettings<IdentityAwareProxyAdminServiceSettings> {
diff --git a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/IdentityAwareProxyOAuthServiceClient.java b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/IdentityAwareProxyOAuthServiceClient.java
index ed778dae6e1e..f06fd5f8a962 100644
--- a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/IdentityAwareProxyOAuthServiceClient.java
+++ b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/IdentityAwareProxyOAuthServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -237,6 +238,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IdentityAwareProxyOAuthServiceClient implements BackgroundResource {
   private final IdentityAwareProxyOAuthServiceSettings settings;
diff --git a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/IdentityAwareProxyOAuthServiceSettings.java b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/IdentityAwareProxyOAuthServiceSettings.java
index aa2529518a17..00c5115ec3cd 100644
--- a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/IdentityAwareProxyOAuthServiceSettings.java
+++ b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/IdentityAwareProxyOAuthServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IdentityAwareProxyOAuthServiceSettings
     extends ClientSettings<IdentityAwareProxyOAuthServiceSettings> {
diff --git a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/GrpcIdentityAwareProxyAdminServiceCallableFactory.java b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/GrpcIdentityAwareProxyAdminServiceCallableFactory.java
index 0dac26c603d1..e3b5cbc6d41a 100644
--- a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/GrpcIdentityAwareProxyAdminServiceCallableFactory.java
+++ b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/GrpcIdentityAwareProxyAdminServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIdentityAwareProxyAdminServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/GrpcIdentityAwareProxyAdminServiceStub.java b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/GrpcIdentityAwareProxyAdminServiceStub.java
index da29ef8af38a..b99031f1fe29 100644
--- a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/GrpcIdentityAwareProxyAdminServiceStub.java
+++ b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/GrpcIdentityAwareProxyAdminServiceStub.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIdentityAwareProxyAdminServiceStub extends IdentityAwareProxyAdminServiceStub {
   private static final MethodDescriptor<SetIamPolicyRequest, Policy> setIamPolicyMethodDescriptor =
diff --git a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/GrpcIdentityAwareProxyOAuthServiceCallableFactory.java b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/GrpcIdentityAwareProxyOAuthServiceCallableFactory.java
index 5b93590b6c3e..cec44b1e759b 100644
--- a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/GrpcIdentityAwareProxyOAuthServiceCallableFactory.java
+++ b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/GrpcIdentityAwareProxyOAuthServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIdentityAwareProxyOAuthServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/GrpcIdentityAwareProxyOAuthServiceStub.java b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/GrpcIdentityAwareProxyOAuthServiceStub.java
index c5b0017ba178..6f4a96b26977 100644
--- a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/GrpcIdentityAwareProxyOAuthServiceStub.java
+++ b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/GrpcIdentityAwareProxyOAuthServiceStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIdentityAwareProxyOAuthServiceStub extends IdentityAwareProxyOAuthServiceStub {
   private static final MethodDescriptor<ListBrandsRequest, ListBrandsResponse>
diff --git a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/HttpJsonIdentityAwareProxyAdminServiceCallableFactory.java b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/HttpJsonIdentityAwareProxyAdminServiceCallableFactory.java
index 3fe40b7d8457..f9e53511b25d 100644
--- a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/HttpJsonIdentityAwareProxyAdminServiceCallableFactory.java
+++ b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/HttpJsonIdentityAwareProxyAdminServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIdentityAwareProxyAdminServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/HttpJsonIdentityAwareProxyAdminServiceStub.java b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/HttpJsonIdentityAwareProxyAdminServiceStub.java
index efbe1c3b1df6..15ba9cad2de8 100644
--- a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/HttpJsonIdentityAwareProxyAdminServiceStub.java
+++ b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/HttpJsonIdentityAwareProxyAdminServiceStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIdentityAwareProxyAdminServiceStub extends IdentityAwareProxyAdminServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/HttpJsonIdentityAwareProxyOAuthServiceCallableFactory.java b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/HttpJsonIdentityAwareProxyOAuthServiceCallableFactory.java
index 1a13d56c2d8c..6e86fe927449 100644
--- a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/HttpJsonIdentityAwareProxyOAuthServiceCallableFactory.java
+++ b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/HttpJsonIdentityAwareProxyOAuthServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIdentityAwareProxyOAuthServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/HttpJsonIdentityAwareProxyOAuthServiceStub.java b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/HttpJsonIdentityAwareProxyOAuthServiceStub.java
index 282f1b42dcfe..46a4dda20937 100644
--- a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/HttpJsonIdentityAwareProxyOAuthServiceStub.java
+++ b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/HttpJsonIdentityAwareProxyOAuthServiceStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIdentityAwareProxyOAuthServiceStub extends IdentityAwareProxyOAuthServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/IdentityAwareProxyAdminServiceStub.java b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/IdentityAwareProxyAdminServiceStub.java
index d4a86dedf66b..16c999d71871 100644
--- a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/IdentityAwareProxyAdminServiceStub.java
+++ b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/IdentityAwareProxyAdminServiceStub.java
@@ -39,6 +39,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class IdentityAwareProxyAdminServiceStub implements BackgroundResource {
 
diff --git a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/IdentityAwareProxyAdminServiceStubSettings.java b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/IdentityAwareProxyAdminServiceStubSettings.java
index 3ad6ad885b7c..eec7bb420d3d 100644
--- a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/IdentityAwareProxyAdminServiceStubSettings.java
+++ b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/IdentityAwareProxyAdminServiceStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class IdentityAwareProxyAdminServiceStubSettings
diff --git a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/IdentityAwareProxyOAuthServiceStub.java b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/IdentityAwareProxyOAuthServiceStub.java
index 35699cd566d6..bb8857bc34c5 100644
--- a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/IdentityAwareProxyOAuthServiceStub.java
+++ b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/IdentityAwareProxyOAuthServiceStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.iap.v1.ResetIdentityAwareProxyClientSecretRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class IdentityAwareProxyOAuthServiceStub implements BackgroundResource {
 
diff --git a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/IdentityAwareProxyOAuthServiceStubSettings.java b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/IdentityAwareProxyOAuthServiceStubSettings.java
index 1b0db00a705c..938e4cfb19b4 100644
--- a/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/IdentityAwareProxyOAuthServiceStubSettings.java
+++ b/java-iap/google-cloud-iap/src/main/java/com/google/cloud/iap/v1/stub/IdentityAwareProxyOAuthServiceStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class IdentityAwareProxyOAuthServiceStubSettings
diff --git a/java-iap/proto-google-cloud-iap-v1/src/main/java/com/google/cloud/iap/v1/TunnelDestGroupName.java b/java-iap/proto-google-cloud-iap-v1/src/main/java/com/google/cloud/iap/v1/TunnelDestGroupName.java
index 82c8423842d8..90f3c25428b7 100644
--- a/java-iap/proto-google-cloud-iap-v1/src/main/java/com/google/cloud/iap/v1/TunnelDestGroupName.java
+++ b/java-iap/proto-google-cloud-iap-v1/src/main/java/com/google/cloud/iap/v1/TunnelDestGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TunnelDestGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DEST_GROUP =
diff --git a/java-iap/proto-google-cloud-iap-v1/src/main/java/com/google/cloud/iap/v1/TunnelLocationName.java b/java-iap/proto-google-cloud-iap-v1/src/main/java/com/google/cloud/iap/v1/TunnelLocationName.java
index 10294161764d..d74e18132164 100644
--- a/java-iap/proto-google-cloud-iap-v1/src/main/java/com/google/cloud/iap/v1/TunnelLocationName.java
+++ b/java-iap/proto-google-cloud-iap-v1/src/main/java/com/google/cloud/iap/v1/TunnelLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TunnelLocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/IDSClient.java b/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/IDSClient.java
index 0f536fd7dc5b..e287a057bae1 100644
--- a/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/IDSClient.java
+++ b/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/IDSClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -199,6 +200,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IDSClient implements BackgroundResource {
   private final IDSSettings settings;
diff --git a/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/IDSSettings.java b/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/IDSSettings.java
index 511ef850a44f..567427ab69df 100644
--- a/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/IDSSettings.java
+++ b/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/IDSSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IDSSettings extends ClientSettings<IDSSettings> {
 
diff --git a/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/GrpcIDSCallableFactory.java b/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/GrpcIDSCallableFactory.java
index 1073b1a43630..222615646412 100644
--- a/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/GrpcIDSCallableFactory.java
+++ b/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/GrpcIDSCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIDSCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/GrpcIDSStub.java b/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/GrpcIDSStub.java
index 6b7946aa1cca..2e26d669cf6e 100644
--- a/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/GrpcIDSStub.java
+++ b/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/GrpcIDSStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIDSStub extends IDSStub {
   private static final MethodDescriptor<ListEndpointsRequest, ListEndpointsResponse>
diff --git a/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/HttpJsonIDSCallableFactory.java b/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/HttpJsonIDSCallableFactory.java
index e038a1392839..1e67050099e6 100644
--- a/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/HttpJsonIDSCallableFactory.java
+++ b/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/HttpJsonIDSCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIDSCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/HttpJsonIDSStub.java b/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/HttpJsonIDSStub.java
index ed39077620d9..d71d266e144b 100644
--- a/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/HttpJsonIDSStub.java
+++ b/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/HttpJsonIDSStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIDSStub extends IDSStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/IDSStub.java b/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/IDSStub.java
index a0d7c304d0da..f9e20532fa7f 100644
--- a/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/IDSStub.java
+++ b/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/IDSStub.java
@@ -32,6 +32,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class IDSStub implements BackgroundResource {
 
diff --git a/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/IDSStubSettings.java b/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/IDSStubSettings.java
index 6501b34bbe89..7ac5cbf8d294 100644
--- a/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/IDSStubSettings.java
+++ b/java-ids/google-cloud-ids/src/main/java/com/google/cloud/ids/v1/stub/IDSStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class IDSStubSettings extends StubSettings<IDSStubSettings> {
diff --git a/java-ids/proto-google-cloud-ids-v1/src/main/java/com/google/cloud/ids/v1/EndpointName.java b/java-ids/proto-google-cloud-ids-v1/src/main/java/com/google/cloud/ids/v1/EndpointName.java
index 9424b64cdee3..34dd3dcd8845 100644
--- a/java-ids/proto-google-cloud-ids-v1/src/main/java/com/google/cloud/ids/v1/EndpointName.java
+++ b/java-ids/proto-google-cloud-ids-v1/src/main/java/com/google/cloud/ids/v1/EndpointName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EndpointName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENDPOINT =
diff --git a/java-ids/proto-google-cloud-ids-v1/src/main/java/com/google/cloud/ids/v1/LocationName.java b/java-ids/proto-google-cloud-ids-v1/src/main/java/com/google/cloud/ids/v1/LocationName.java
index 0a6a9f8182ae..ce0d11051832 100644
--- a/java-ids/proto-google-cloud-ids-v1/src/main/java/com/google/cloud/ids/v1/LocationName.java
+++ b/java-ids/proto-google-cloud-ids-v1/src/main/java/com/google/cloud/ids/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/ConfigClient.java b/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/ConfigClient.java
index 9122e6122393..2089aca2e9cf 100644
--- a/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/ConfigClient.java
+++ b/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/ConfigClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -941,6 +942,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConfigClient implements BackgroundResource {
   private final ConfigSettings settings;
diff --git a/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/ConfigSettings.java b/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/ConfigSettings.java
index d785aa9410b6..4a08793f8298 100644
--- a/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/ConfigSettings.java
+++ b/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/ConfigSettings.java
@@ -55,6 +55,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -130,6 +131,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConfigSettings extends ClientSettings<ConfigSettings> {
 
diff --git a/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/ConfigStub.java b/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/ConfigStub.java
index ebb3b208f579..03d1493a1ba7 100644
--- a/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/ConfigStub.java
+++ b/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/ConfigStub.java
@@ -104,6 +104,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ConfigStub implements BackgroundResource {
 
diff --git a/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/ConfigStubSettings.java b/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/ConfigStubSettings.java
index d567935ab772..17080077dbb6 100644
--- a/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/ConfigStubSettings.java
+++ b/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/ConfigStubSettings.java
@@ -138,6 +138,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -213,6 +214,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ConfigStubSettings extends StubSettings<ConfigStubSettings> {
diff --git a/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/GrpcConfigCallableFactory.java b/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/GrpcConfigCallableFactory.java
index 84ce283b180d..604f0142271b 100644
--- a/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/GrpcConfigCallableFactory.java
+++ b/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/GrpcConfigCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConfigCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/GrpcConfigStub.java b/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/GrpcConfigStub.java
index 8b6bc79d7407..b9103b679c5a 100644
--- a/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/GrpcConfigStub.java
+++ b/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/GrpcConfigStub.java
@@ -113,6 +113,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConfigStub extends ConfigStub {
   private static final MethodDescriptor<ListDeploymentsRequest, ListDeploymentsResponse>
diff --git a/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/HttpJsonConfigCallableFactory.java b/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/HttpJsonConfigCallableFactory.java
index 57383becbfe4..3f98da078c8a 100644
--- a/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/HttpJsonConfigCallableFactory.java
+++ b/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/HttpJsonConfigCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConfigCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/HttpJsonConfigStub.java b/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/HttpJsonConfigStub.java
index c6976153534d..b815a782f1fd 100644
--- a/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/HttpJsonConfigStub.java
+++ b/java-infra-manager/google-cloud-infra-manager/src/main/java/com/google/cloud/config/v1/stub/HttpJsonConfigStub.java
@@ -124,6 +124,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConfigStub extends ConfigStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/AutoMigrationConfigName.java b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/AutoMigrationConfigName.java
index f6acc1c7234e..211c8fb93431 100644
--- a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/AutoMigrationConfigName.java
+++ b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/AutoMigrationConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutoMigrationConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/DeploymentGroupName.java b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/DeploymentGroupName.java
index 4ea6f2485801..062b206e5ddc 100644
--- a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/DeploymentGroupName.java
+++ b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/DeploymentGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DEPLOYMENT_GROUP =
diff --git a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/DeploymentGroupRevisionName.java b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/DeploymentGroupRevisionName.java
index 50a5cacf8405..3e7e9724f05f 100644
--- a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/DeploymentGroupRevisionName.java
+++ b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/DeploymentGroupRevisionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentGroupRevisionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DEPLOYMENT_GROUP_REVISION =
diff --git a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/DeploymentName.java b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/DeploymentName.java
index e05bfefc7d3d..74c65ad870ae 100644
--- a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/DeploymentName.java
+++ b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/DeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DEPLOYMENT =
diff --git a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/LocationName.java b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/LocationName.java
index 9ba9a5cc9fa7..950c67a02942 100644
--- a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/LocationName.java
+++ b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/PreviewName.java b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/PreviewName.java
index 81ac1553fe73..98b9c9da7e4c 100644
--- a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/PreviewName.java
+++ b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/PreviewName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PreviewName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PREVIEW =
diff --git a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/ResourceChangeName.java b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/ResourceChangeName.java
index 4a893b394747..40e33a0d92a3 100644
--- a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/ResourceChangeName.java
+++ b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/ResourceChangeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ResourceChangeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PREVIEW_RESOURCE_CHANGE =
diff --git a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/ResourceDriftName.java b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/ResourceDriftName.java
index 71c0f7b4d6a1..e223ac74a511 100644
--- a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/ResourceDriftName.java
+++ b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/ResourceDriftName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ResourceDriftName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PREVIEW_RESOURCE_DRIFT =
diff --git a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/ResourceName.java b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/ResourceName.java
index bfe1cd16c486..b86d2dc17d0c 100644
--- a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/ResourceName.java
+++ b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/ResourceName.java
@@ -24,8 +24,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ResourceName implements com.google.api.resourcenames.ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DEPLOYMENT_REVISION_RESOURCE =
diff --git a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/RevisionName.java b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/RevisionName.java
index 2cebe89f8806..ce54b10367b5 100644
--- a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/RevisionName.java
+++ b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/RevisionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RevisionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DEPLOYMENT_REVISION =
diff --git a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/TerraformVersionName.java b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/TerraformVersionName.java
index 5666913909ad..6c7abd8aa565 100644
--- a/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/TerraformVersionName.java
+++ b/java-infra-manager/proto-google-cloud-infra-manager-v1/src/main/java/com/google/cloud/config/v1/TerraformVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TerraformVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TERRAFORM_VERSION =
diff --git a/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/DeviceManagerClient.java b/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/DeviceManagerClient.java
index 8244ff8354db..da6b4141ed89 100644
--- a/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/DeviceManagerClient.java
+++ b/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/DeviceManagerClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -489,6 +490,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeviceManagerClient implements BackgroundResource {
   private final DeviceManagerSettings settings;
diff --git a/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/DeviceManagerSettings.java b/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/DeviceManagerSettings.java
index 24ee892b6a52..676659a03704 100644
--- a/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/DeviceManagerSettings.java
+++ b/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/DeviceManagerSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeviceManagerSettings extends ClientSettings<DeviceManagerSettings> {
 
diff --git a/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/DeviceManagerStub.java b/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/DeviceManagerStub.java
index dcf453197d2e..4d0b251a221f 100644
--- a/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/DeviceManagerStub.java
+++ b/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/DeviceManagerStub.java
@@ -54,6 +54,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DeviceManagerStub implements BackgroundResource {
 
diff --git a/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/DeviceManagerStubSettings.java b/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/DeviceManagerStubSettings.java
index cf90fa4495c6..b1f80b7f8c99 100644
--- a/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/DeviceManagerStubSettings.java
+++ b/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/DeviceManagerStubSettings.java
@@ -86,6 +86,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DeviceManagerStubSettings extends StubSettings<DeviceManagerStubSettings> {
diff --git a/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/GrpcDeviceManagerCallableFactory.java b/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/GrpcDeviceManagerCallableFactory.java
index 22a8eee41e05..b824c4ae98f8 100644
--- a/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/GrpcDeviceManagerCallableFactory.java
+++ b/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/GrpcDeviceManagerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDeviceManagerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/GrpcDeviceManagerStub.java b/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/GrpcDeviceManagerStub.java
index 517577a80f3c..7238083f8c5b 100644
--- a/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/GrpcDeviceManagerStub.java
+++ b/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/GrpcDeviceManagerStub.java
@@ -64,6 +64,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDeviceManagerStub extends DeviceManagerStub {
   private static final MethodDescriptor<CreateDeviceRegistryRequest, DeviceRegistry>
diff --git a/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/HttpJsonDeviceManagerCallableFactory.java b/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/HttpJsonDeviceManagerCallableFactory.java
index 1136e6965e05..c9e53e5ba211 100644
--- a/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/HttpJsonDeviceManagerCallableFactory.java
+++ b/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/HttpJsonDeviceManagerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeviceManagerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/HttpJsonDeviceManagerStub.java b/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/HttpJsonDeviceManagerStub.java
index 131f4e2a2f06..0f47d830c610 100644
--- a/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/HttpJsonDeviceManagerStub.java
+++ b/java-iot/google-cloud-iot/src/main/java/com/google/cloud/iot/v1/stub/HttpJsonDeviceManagerStub.java
@@ -71,6 +71,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -78,6 +79,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeviceManagerStub extends DeviceManagerStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-iot/proto-google-cloud-iot-v1/src/main/java/com/google/cloud/iot/v1/DeviceName.java b/java-iot/proto-google-cloud-iot-v1/src/main/java/com/google/cloud/iot/v1/DeviceName.java
index 20b180fe3705..88926c5b6ed9 100644
--- a/java-iot/proto-google-cloud-iot-v1/src/main/java/com/google/cloud/iot/v1/DeviceName.java
+++ b/java-iot/proto-google-cloud-iot-v1/src/main/java/com/google/cloud/iot/v1/DeviceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeviceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REGISTRY_DEVICE =
diff --git a/java-iot/proto-google-cloud-iot-v1/src/main/java/com/google/cloud/iot/v1/LocationName.java b/java-iot/proto-google-cloud-iot-v1/src/main/java/com/google/cloud/iot/v1/LocationName.java
index 67f01eafa77c..14f06c48b716 100644
--- a/java-iot/proto-google-cloud-iot-v1/src/main/java/com/google/cloud/iot/v1/LocationName.java
+++ b/java-iot/proto-google-cloud-iot-v1/src/main/java/com/google/cloud/iot/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-iot/proto-google-cloud-iot-v1/src/main/java/com/google/cloud/iot/v1/RegistryName.java b/java-iot/proto-google-cloud-iot-v1/src/main/java/com/google/cloud/iot/v1/RegistryName.java
index b0f6dab358a6..4a5f6ff74cbc 100644
--- a/java-iot/proto-google-cloud-iot-v1/src/main/java/com/google/cloud/iot/v1/RegistryName.java
+++ b/java-iot/proto-google-cloud-iot-v1/src/main/java/com/google/cloud/iot/v1/RegistryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegistryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REGISTRY =
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/AggregateProductStatusesServiceClient.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/AggregateProductStatusesServiceClient.java
index f50ae7cd956f..d4761ce744ab 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/AggregateProductStatusesServiceClient.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/AggregateProductStatusesServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AggregateProductStatusesServiceClient implements BackgroundResource {
   private final AggregateProductStatusesServiceSettings settings;
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/AggregateProductStatusesServiceSettings.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/AggregateProductStatusesServiceSettings.java
index 380674910095..908a8a1aa8cc 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/AggregateProductStatusesServiceSettings.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/AggregateProductStatusesServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AggregateProductStatusesServiceSettings
     extends ClientSettings<AggregateProductStatusesServiceSettings> {
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/IssueResolutionServiceClient.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/IssueResolutionServiceClient.java
index c7cf057f4fe5..cad9ccdb6a59 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/IssueResolutionServiceClient.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/IssueResolutionServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -172,6 +173,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IssueResolutionServiceClient implements BackgroundResource {
   private final IssueResolutionServiceSettings settings;
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/IssueResolutionServiceSettings.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/IssueResolutionServiceSettings.java
index cd87cd9db628..09ce1dee5b3b 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/IssueResolutionServiceSettings.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/IssueResolutionServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IssueResolutionServiceSettings extends ClientSettings<IssueResolutionServiceSettings> {
 
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/AggregateProductStatusesServiceStub.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/AggregateProductStatusesServiceStub.java
index d6adf2fdc20b..155e2a636d31 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/AggregateProductStatusesServiceStub.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/AggregateProductStatusesServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.shopping.merchant.issueresolution.v1.ListAggregateProductStatusesRequest;
 import com.google.shopping.merchant.issueresolution.v1.ListAggregateProductStatusesResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AggregateProductStatusesServiceStub implements BackgroundResource {
 
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/AggregateProductStatusesServiceStubSettings.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/AggregateProductStatusesServiceStubSettings.java
index 992d2c005195..f5ae8f1770e7 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/AggregateProductStatusesServiceStubSettings.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/AggregateProductStatusesServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AggregateProductStatusesServiceStubSettings
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/GrpcAggregateProductStatusesServiceCallableFactory.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/GrpcAggregateProductStatusesServiceCallableFactory.java
index 8792d75e96d2..6c8d04fce269 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/GrpcAggregateProductStatusesServiceCallableFactory.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/GrpcAggregateProductStatusesServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAggregateProductStatusesServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/GrpcAggregateProductStatusesServiceStub.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/GrpcAggregateProductStatusesServiceStub.java
index e042c155a13e..a2984f3546f9 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/GrpcAggregateProductStatusesServiceStub.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/GrpcAggregateProductStatusesServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAggregateProductStatusesServiceStub extends AggregateProductStatusesServiceStub {
   private static final MethodDescriptor<
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/GrpcIssueResolutionServiceCallableFactory.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/GrpcIssueResolutionServiceCallableFactory.java
index 9772697f8b94..e7b026a73fb0 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/GrpcIssueResolutionServiceCallableFactory.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/GrpcIssueResolutionServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIssueResolutionServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/GrpcIssueResolutionServiceStub.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/GrpcIssueResolutionServiceStub.java
index a99edf271092..1d637cc94c3b 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/GrpcIssueResolutionServiceStub.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/GrpcIssueResolutionServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIssueResolutionServiceStub extends IssueResolutionServiceStub {
   private static final MethodDescriptor<RenderAccountIssuesRequest, RenderAccountIssuesResponse>
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/HttpJsonAggregateProductStatusesServiceCallableFactory.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/HttpJsonAggregateProductStatusesServiceCallableFactory.java
index 3911bc1deea6..b23a3014b5ac 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/HttpJsonAggregateProductStatusesServiceCallableFactory.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/HttpJsonAggregateProductStatusesServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAggregateProductStatusesServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/HttpJsonAggregateProductStatusesServiceStub.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/HttpJsonAggregateProductStatusesServiceStub.java
index e6b7d15979e0..e13895b53133 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/HttpJsonAggregateProductStatusesServiceStub.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/HttpJsonAggregateProductStatusesServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAggregateProductStatusesServiceStub
     extends AggregateProductStatusesServiceStub {
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/HttpJsonIssueResolutionServiceCallableFactory.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/HttpJsonIssueResolutionServiceCallableFactory.java
index 8c4f7511dfb8..cb59f394d6bd 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/HttpJsonIssueResolutionServiceCallableFactory.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/HttpJsonIssueResolutionServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIssueResolutionServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/HttpJsonIssueResolutionServiceStub.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/HttpJsonIssueResolutionServiceStub.java
index c1e210bcad0a..088c7136c32e 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/HttpJsonIssueResolutionServiceStub.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/HttpJsonIssueResolutionServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIssueResolutionServiceStub extends IssueResolutionServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/IssueResolutionServiceStub.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/IssueResolutionServiceStub.java
index 5bfa9bf0724c..60cd16ea66e8 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/IssueResolutionServiceStub.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/IssueResolutionServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.shopping.merchant.issueresolution.v1.TriggerActionRequest;
 import com.google.shopping.merchant.issueresolution.v1.TriggerActionResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class IssueResolutionServiceStub implements BackgroundResource {
 
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/IssueResolutionServiceStubSettings.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/IssueResolutionServiceStubSettings.java
index 6667860ef917..3b059e27828e 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/IssueResolutionServiceStubSettings.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1/stub/IssueResolutionServiceStubSettings.java
@@ -50,6 +50,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class IssueResolutionServiceStubSettings
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/AggregateProductStatusesServiceClient.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/AggregateProductStatusesServiceClient.java
index 1061825bdee3..df67a1c9d632 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/AggregateProductStatusesServiceClient.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/AggregateProductStatusesServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AggregateProductStatusesServiceClient implements BackgroundResource {
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/AggregateProductStatusesServiceSettings.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/AggregateProductStatusesServiceSettings.java
index 0228a7388b9a..4a1b88d176c4 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/AggregateProductStatusesServiceSettings.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/AggregateProductStatusesServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AggregateProductStatusesServiceSettings
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/IssueResolutionServiceClient.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/IssueResolutionServiceClient.java
index f273adf57830..bef636ca966c 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/IssueResolutionServiceClient.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/IssueResolutionServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -173,6 +174,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class IssueResolutionServiceClient implements BackgroundResource {
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/IssueResolutionServiceSettings.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/IssueResolutionServiceSettings.java
index 40c5db2a15df..cb7753a16bdd 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/IssueResolutionServiceSettings.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/IssueResolutionServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class IssueResolutionServiceSettings extends ClientSettings<IssueResolutionServiceSettings> {
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/AggregateProductStatusesServiceStub.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/AggregateProductStatusesServiceStub.java
index d68c45e3e2e3..a27a3633cd40 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/AggregateProductStatusesServiceStub.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/AggregateProductStatusesServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.shopping.merchant.issueresolution.v1beta.ListAggregateProductStatusesRequest;
 import com.google.shopping.merchant.issueresolution.v1beta.ListAggregateProductStatusesResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AggregateProductStatusesServiceStub implements BackgroundResource {
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/AggregateProductStatusesServiceStubSettings.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/AggregateProductStatusesServiceStubSettings.java
index fa295e01f623..3309fe04dc96 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/AggregateProductStatusesServiceStubSettings.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/AggregateProductStatusesServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/GrpcAggregateProductStatusesServiceCallableFactory.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/GrpcAggregateProductStatusesServiceCallableFactory.java
index 0b67798d52fd..a8d32fa00286 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/GrpcAggregateProductStatusesServiceCallableFactory.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/GrpcAggregateProductStatusesServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAggregateProductStatusesServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/GrpcAggregateProductStatusesServiceStub.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/GrpcAggregateProductStatusesServiceStub.java
index 73c6e418dd7e..c42cb7a0aa73 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/GrpcAggregateProductStatusesServiceStub.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/GrpcAggregateProductStatusesServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAggregateProductStatusesServiceStub extends AggregateProductStatusesServiceStub {
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/GrpcIssueResolutionServiceCallableFactory.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/GrpcIssueResolutionServiceCallableFactory.java
index 38caa2f78b3c..f4dedde35b52 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/GrpcIssueResolutionServiceCallableFactory.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/GrpcIssueResolutionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcIssueResolutionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/GrpcIssueResolutionServiceStub.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/GrpcIssueResolutionServiceStub.java
index 46abea312c55..d1ef220cbc53 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/GrpcIssueResolutionServiceStub.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/GrpcIssueResolutionServiceStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcIssueResolutionServiceStub extends IssueResolutionServiceStub {
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/HttpJsonAggregateProductStatusesServiceCallableFactory.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/HttpJsonAggregateProductStatusesServiceCallableFactory.java
index 9744ef9b9fee..44bd89bb9c92 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/HttpJsonAggregateProductStatusesServiceCallableFactory.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/HttpJsonAggregateProductStatusesServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAggregateProductStatusesServiceCallableFactory
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/HttpJsonAggregateProductStatusesServiceStub.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/HttpJsonAggregateProductStatusesServiceStub.java
index 8185b64af997..69258f65583b 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/HttpJsonAggregateProductStatusesServiceStub.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/HttpJsonAggregateProductStatusesServiceStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAggregateProductStatusesServiceStub
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/HttpJsonIssueResolutionServiceCallableFactory.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/HttpJsonIssueResolutionServiceCallableFactory.java
index a679412658c4..478c0484cb84 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/HttpJsonIssueResolutionServiceCallableFactory.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/HttpJsonIssueResolutionServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonIssueResolutionServiceCallableFactory
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/HttpJsonIssueResolutionServiceStub.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/HttpJsonIssueResolutionServiceStub.java
index 7321b7bf365c..42d3360324af 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/HttpJsonIssueResolutionServiceStub.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/HttpJsonIssueResolutionServiceStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonIssueResolutionServiceStub extends IssueResolutionServiceStub {
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/IssueResolutionServiceStub.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/IssueResolutionServiceStub.java
index ae8495d49fd4..d115be7732db 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/IssueResolutionServiceStub.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/IssueResolutionServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.shopping.merchant.issueresolution.v1beta.TriggerActionRequest;
 import com.google.shopping.merchant.issueresolution.v1beta.TriggerActionResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class IssueResolutionServiceStub implements BackgroundResource {
diff --git a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/IssueResolutionServiceStubSettings.java b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/IssueResolutionServiceStubSettings.java
index 1e62643180f6..3db5c45496f2 100644
--- a/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/IssueResolutionServiceStubSettings.java
+++ b/java-java-shopping-merchant-issue-resolution/google-shopping-merchant-issue-resolution/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/stub/IssueResolutionServiceStubSettings.java
@@ -50,6 +50,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1/src/main/java/com/google/shopping/merchant/issueresolution/v1/AccountName.java b/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1/src/main/java/com/google/shopping/merchant/issueresolution/v1/AccountName.java
index c695bc3fed4b..2a729ec0e8a1 100644
--- a/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1/src/main/java/com/google/shopping/merchant/issueresolution/v1/AccountName.java
+++ b/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1/src/main/java/com/google/shopping/merchant/issueresolution/v1/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1/src/main/java/com/google/shopping/merchant/issueresolution/v1/AggregateProductStatusName.java b/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1/src/main/java/com/google/shopping/merchant/issueresolution/v1/AggregateProductStatusName.java
index 313c70e4db45..5c3c7b22c57f 100644
--- a/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1/src/main/java/com/google/shopping/merchant/issueresolution/v1/AggregateProductStatusName.java
+++ b/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1/src/main/java/com/google/shopping/merchant/issueresolution/v1/AggregateProductStatusName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AggregateProductStatusName implements ResourceName {
   private static final PathTemplate ACCOUNT_AGGREGATE_PRODUCT_STATUS =
diff --git a/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1/src/main/java/com/google/shopping/merchant/issueresolution/v1/ProductName.java b/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1/src/main/java/com/google/shopping/merchant/issueresolution/v1/ProductName.java
index 008a344b1a6f..61d9f9076cda 100644
--- a/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1/src/main/java/com/google/shopping/merchant/issueresolution/v1/ProductName.java
+++ b/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1/src/main/java/com/google/shopping/merchant/issueresolution/v1/ProductName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductName implements ResourceName {
   private static final PathTemplate ACCOUNT_PRODUCT =
diff --git a/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1beta/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/AccountName.java b/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1beta/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/AccountName.java
index 4809c1caa7c3..1ca1ef09aba1 100644
--- a/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1beta/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/AccountName.java
+++ b/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1beta/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1beta/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/AggregateProductStatusName.java b/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1beta/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/AggregateProductStatusName.java
index a38c401cc224..1495f88f4bf9 100644
--- a/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1beta/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/AggregateProductStatusName.java
+++ b/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1beta/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/AggregateProductStatusName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AggregateProductStatusName implements ResourceName {
   private static final PathTemplate ACCOUNT_AGGREGATE_PRODUCT_STATUS =
diff --git a/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1beta/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/ProductName.java b/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1beta/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/ProductName.java
index 290cef0d6ec3..7ded21187f7b 100644
--- a/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1beta/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/ProductName.java
+++ b/java-java-shopping-merchant-issue-resolution/proto-google-shopping-merchant-issue-resolution-v1beta/src/main/java/com/google/shopping/merchant/issueresolution/v1beta/ProductName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductName implements ResourceName {
   private static final PathTemplate ACCOUNT_PRODUCT =
diff --git a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/OrderTrackingSignalsServiceClient.java b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/OrderTrackingSignalsServiceClient.java
index f40fac8f47cf..8f716d4e8e6f 100644
--- a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/OrderTrackingSignalsServiceClient.java
+++ b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/OrderTrackingSignalsServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -135,6 +136,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrderTrackingSignalsServiceClient implements BackgroundResource {
   private final OrderTrackingSignalsServiceSettings settings;
diff --git a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/OrderTrackingSignalsServiceSettings.java b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/OrderTrackingSignalsServiceSettings.java
index 7e90fb4c984b..c2c2d350ab5d 100644
--- a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/OrderTrackingSignalsServiceSettings.java
+++ b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/OrderTrackingSignalsServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrderTrackingSignalsServiceSettings
     extends ClientSettings<OrderTrackingSignalsServiceSettings> {
diff --git a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/GrpcOrderTrackingSignalsServiceCallableFactory.java b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/GrpcOrderTrackingSignalsServiceCallableFactory.java
index b116320ae3fb..0c7c5e1e5bb1 100644
--- a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/GrpcOrderTrackingSignalsServiceCallableFactory.java
+++ b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/GrpcOrderTrackingSignalsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOrderTrackingSignalsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/GrpcOrderTrackingSignalsServiceStub.java b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/GrpcOrderTrackingSignalsServiceStub.java
index 0ed4669d0225..a78ac0fb8e5d 100644
--- a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/GrpcOrderTrackingSignalsServiceStub.java
+++ b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/GrpcOrderTrackingSignalsServiceStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOrderTrackingSignalsServiceStub extends OrderTrackingSignalsServiceStub {
   private static final MethodDescriptor<CreateOrderTrackingSignalRequest, OrderTrackingSignal>
diff --git a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/HttpJsonOrderTrackingSignalsServiceCallableFactory.java b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/HttpJsonOrderTrackingSignalsServiceCallableFactory.java
index 2bdd313fe38e..354c4d2bc53e 100644
--- a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/HttpJsonOrderTrackingSignalsServiceCallableFactory.java
+++ b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/HttpJsonOrderTrackingSignalsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOrderTrackingSignalsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/HttpJsonOrderTrackingSignalsServiceStub.java b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/HttpJsonOrderTrackingSignalsServiceStub.java
index b3eb09f7cae9..f4a6f6abe15b 100644
--- a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/HttpJsonOrderTrackingSignalsServiceStub.java
+++ b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/HttpJsonOrderTrackingSignalsServiceStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOrderTrackingSignalsServiceStub extends OrderTrackingSignalsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/OrderTrackingSignalsServiceStub.java b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/OrderTrackingSignalsServiceStub.java
index f56714001250..dd0d780e85d7 100644
--- a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/OrderTrackingSignalsServiceStub.java
+++ b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/OrderTrackingSignalsServiceStub.java
@@ -21,6 +21,7 @@
 import com.google.shopping.merchant.ordertracking.v1.CreateOrderTrackingSignalRequest;
 import com.google.shopping.merchant.ordertracking.v1.OrderTrackingSignal;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class OrderTrackingSignalsServiceStub implements BackgroundResource {
 
diff --git a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/OrderTrackingSignalsServiceStubSettings.java b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/OrderTrackingSignalsServiceStubSettings.java
index f11692b891e0..6acf190b4bb5 100644
--- a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/OrderTrackingSignalsServiceStubSettings.java
+++ b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1/stub/OrderTrackingSignalsServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class OrderTrackingSignalsServiceStubSettings
diff --git a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/OrderTrackingSignalsServiceClient.java b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/OrderTrackingSignalsServiceClient.java
index 5eb91fb1b5a8..7f901fefabe0 100644
--- a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/OrderTrackingSignalsServiceClient.java
+++ b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/OrderTrackingSignalsServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -136,6 +137,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class OrderTrackingSignalsServiceClient implements BackgroundResource {
diff --git a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/OrderTrackingSignalsServiceSettings.java b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/OrderTrackingSignalsServiceSettings.java
index 9c3b7d67c778..fec3b6355e7d 100644
--- a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/OrderTrackingSignalsServiceSettings.java
+++ b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/OrderTrackingSignalsServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class OrderTrackingSignalsServiceSettings
diff --git a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/GrpcOrderTrackingSignalsServiceCallableFactory.java b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/GrpcOrderTrackingSignalsServiceCallableFactory.java
index eabad0d0bb1c..56ff9cbedf3b 100644
--- a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/GrpcOrderTrackingSignalsServiceCallableFactory.java
+++ b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/GrpcOrderTrackingSignalsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcOrderTrackingSignalsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/GrpcOrderTrackingSignalsServiceStub.java b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/GrpcOrderTrackingSignalsServiceStub.java
index b24962fd3922..22089453d682 100644
--- a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/GrpcOrderTrackingSignalsServiceStub.java
+++ b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/GrpcOrderTrackingSignalsServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcOrderTrackingSignalsServiceStub extends OrderTrackingSignalsServiceStub {
diff --git a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/HttpJsonOrderTrackingSignalsServiceCallableFactory.java b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/HttpJsonOrderTrackingSignalsServiceCallableFactory.java
index a3651a50b462..40b8c9c9ae22 100644
--- a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/HttpJsonOrderTrackingSignalsServiceCallableFactory.java
+++ b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/HttpJsonOrderTrackingSignalsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonOrderTrackingSignalsServiceCallableFactory
diff --git a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/HttpJsonOrderTrackingSignalsServiceStub.java b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/HttpJsonOrderTrackingSignalsServiceStub.java
index 98c515c7ac4b..55ab7f21257b 100644
--- a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/HttpJsonOrderTrackingSignalsServiceStub.java
+++ b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/HttpJsonOrderTrackingSignalsServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonOrderTrackingSignalsServiceStub extends OrderTrackingSignalsServiceStub {
diff --git a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/OrderTrackingSignalsServiceStub.java b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/OrderTrackingSignalsServiceStub.java
index 587841235b29..8c70868110d8 100644
--- a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/OrderTrackingSignalsServiceStub.java
+++ b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/OrderTrackingSignalsServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.shopping.merchant.ordertracking.v1beta.CreateOrderTrackingSignalRequest;
 import com.google.shopping.merchant.ordertracking.v1beta.OrderTrackingSignal;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class OrderTrackingSignalsServiceStub implements BackgroundResource {
diff --git a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/OrderTrackingSignalsServiceStubSettings.java b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/OrderTrackingSignalsServiceStubSettings.java
index e44a0dab5e63..816e4fe4dd13 100644
--- a/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/OrderTrackingSignalsServiceStubSettings.java
+++ b/java-java-shopping-merchant-order-tracking/google-shopping-merchant-order-tracking/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/stub/OrderTrackingSignalsServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-java-shopping-merchant-order-tracking/proto-google-shopping-merchant-order-tracking-v1/src/main/java/com/google/shopping/merchant/ordertracking/v1/AccountName.java b/java-java-shopping-merchant-order-tracking/proto-google-shopping-merchant-order-tracking-v1/src/main/java/com/google/shopping/merchant/ordertracking/v1/AccountName.java
index e04e6bfe77bd..dd1c9d11358d 100644
--- a/java-java-shopping-merchant-order-tracking/proto-google-shopping-merchant-order-tracking-v1/src/main/java/com/google/shopping/merchant/ordertracking/v1/AccountName.java
+++ b/java-java-shopping-merchant-order-tracking/proto-google-shopping-merchant-order-tracking-v1/src/main/java/com/google/shopping/merchant/ordertracking/v1/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-java-shopping-merchant-order-tracking/proto-google-shopping-merchant-order-tracking-v1beta/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/AccountName.java b/java-java-shopping-merchant-order-tracking/proto-google-shopping-merchant-order-tracking-v1beta/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/AccountName.java
index 2ee8689a0e61..0c9c8f6599cc 100644
--- a/java-java-shopping-merchant-order-tracking/proto-google-shopping-merchant-order-tracking-v1beta/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/AccountName.java
+++ b/java-java-shopping-merchant-order-tracking/proto-google-shopping-merchant-order-tracking-v1beta/src/main/java/com/google/shopping/merchant/ordertracking/v1beta/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/AutokeyAdminClient.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/AutokeyAdminClient.java
index 4a725ad9223d..5389837b18f1 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/AutokeyAdminClient.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/AutokeyAdminClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -265,6 +266,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutokeyAdminClient implements BackgroundResource {
   private final AutokeyAdminSettings settings;
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/AutokeyAdminSettings.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/AutokeyAdminSettings.java
index 428594a4be11..b56627951d35 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/AutokeyAdminSettings.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/AutokeyAdminSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -93,6 +94,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutokeyAdminSettings extends ClientSettings<AutokeyAdminSettings> {
 
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/AutokeyClient.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/AutokeyClient.java
index 6dc91122d7f7..a1916c40c36e 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/AutokeyClient.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/AutokeyClient.java
@@ -45,6 +45,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -277,6 +278,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutokeyClient implements BackgroundResource {
   private final AutokeySettings settings;
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/AutokeySettings.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/AutokeySettings.java
index 146b37165c57..3cef2dee36ec 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/AutokeySettings.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/AutokeySettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutokeySettings extends ClientSettings<AutokeySettings> {
 
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/EkmServiceClient.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/EkmServiceClient.java
index 34ca64bf4d33..f19bc77e48af 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/EkmServiceClient.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/EkmServiceClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -340,6 +341,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EkmServiceClient implements BackgroundResource {
   private final EkmServiceSettings settings;
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/EkmServiceSettings.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/EkmServiceSettings.java
index 7b917344098f..331a213cb41e 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/EkmServiceSettings.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/EkmServiceSettings.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -94,6 +95,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EkmServiceSettings extends ClientSettings<EkmServiceSettings> {
 
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/HsmManagementClient.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/HsmManagementClient.java
index 4de01d9fedf8..f08ff6a40693 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/HsmManagementClient.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/HsmManagementClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -393,6 +394,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HsmManagementClient implements BackgroundResource {
   private final HsmManagementSettings settings;
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/HsmManagementSettings.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/HsmManagementSettings.java
index 9d61ad5aba21..3e57a111a4a8 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/HsmManagementSettings.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/HsmManagementSettings.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HsmManagementSettings extends ClientSettings<HsmManagementSettings> {
 
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/KeyManagementServiceClient.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/KeyManagementServiceClient.java
index ac1c4de2caef..19ad8c261381 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/KeyManagementServiceClient.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/KeyManagementServiceClient.java
@@ -49,6 +49,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -848,6 +849,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class KeyManagementServiceClient implements BackgroundResource {
   private final KeyManagementServiceSettings settings;
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/KeyManagementServiceSettings.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/KeyManagementServiceSettings.java
index 1669729e04a4..ae9fddae8974 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/KeyManagementServiceSettings.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/KeyManagementServiceSettings.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class KeyManagementServiceSettings extends ClientSettings<KeyManagementServiceSettings> {
 
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/AutokeyAdminStub.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/AutokeyAdminStub.java
index f74a2b3059fa..0addbd5829df 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/AutokeyAdminStub.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/AutokeyAdminStub.java
@@ -35,6 +35,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AutokeyAdminStub implements BackgroundResource {
 
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/AutokeyAdminStubSettings.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/AutokeyAdminStubSettings.java
index 9ca8bce65f38..f9edb589fc13 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/AutokeyAdminStubSettings.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/AutokeyAdminStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AutokeyAdminStubSettings extends StubSettings<AutokeyAdminStubSettings> {
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/AutokeyStub.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/AutokeyStub.java
index 6c95f031b51c..94c66bd4797e 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/AutokeyStub.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/AutokeyStub.java
@@ -40,6 +40,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AutokeyStub implements BackgroundResource {
 
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/AutokeyStubSettings.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/AutokeyStubSettings.java
index af3db58bd3fa..f76249d17806 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/AutokeyStubSettings.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/AutokeyStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -149,6 +150,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AutokeyStubSettings extends StubSettings<AutokeyStubSettings> {
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/EkmServiceStub.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/EkmServiceStub.java
index 20395bf6c577..ce6758985284 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/EkmServiceStub.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/EkmServiceStub.java
@@ -42,6 +42,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EkmServiceStub implements BackgroundResource {
 
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/EkmServiceStubSettings.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/EkmServiceStubSettings.java
index 43f8731acec1..c774e5d7236c 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/EkmServiceStubSettings.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/EkmServiceStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EkmServiceStubSettings extends StubSettings<EkmServiceStubSettings> {
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcAutokeyAdminCallableFactory.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcAutokeyAdminCallableFactory.java
index 7b526467f301..998985b65f2c 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcAutokeyAdminCallableFactory.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcAutokeyAdminCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAutokeyAdminCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcAutokeyAdminStub.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcAutokeyAdminStub.java
index 9dc410cf5f00..60bbdeb39f07 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcAutokeyAdminStub.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcAutokeyAdminStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAutokeyAdminStub extends AutokeyAdminStub {
   private static final MethodDescriptor<UpdateAutokeyConfigRequest, AutokeyConfig>
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcAutokeyCallableFactory.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcAutokeyCallableFactory.java
index efe6e5e4cd65..51e941a2cef0 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcAutokeyCallableFactory.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcAutokeyCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAutokeyCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcAutokeyStub.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcAutokeyStub.java
index 6a47ae86fcf0..fadf385dc107 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcAutokeyStub.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcAutokeyStub.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAutokeyStub extends AutokeyStub {
   private static final MethodDescriptor<CreateKeyHandleRequest, Operation>
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcEkmServiceCallableFactory.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcEkmServiceCallableFactory.java
index c93f202e6087..45014161f34a 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcEkmServiceCallableFactory.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcEkmServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEkmServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcEkmServiceStub.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcEkmServiceStub.java
index 4feff07e10c7..739d1b973686 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcEkmServiceStub.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcEkmServiceStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEkmServiceStub extends EkmServiceStub {
   private static final MethodDescriptor<ListEkmConnectionsRequest, ListEkmConnectionsResponse>
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcHsmManagementCallableFactory.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcHsmManagementCallableFactory.java
index 29ae4aeebacb..e40c8a6b99b6 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcHsmManagementCallableFactory.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcHsmManagementCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcHsmManagementCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcHsmManagementStub.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcHsmManagementStub.java
index aad465ad0058..58d4a7e16722 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcHsmManagementStub.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcHsmManagementStub.java
@@ -63,6 +63,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcHsmManagementStub extends HsmManagementStub {
   private static final MethodDescriptor<
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcKeyManagementServiceCallableFactory.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcKeyManagementServiceCallableFactory.java
index fe3fa2622bb0..546f05449d9e 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcKeyManagementServiceCallableFactory.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcKeyManagementServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcKeyManagementServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcKeyManagementServiceStub.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcKeyManagementServiceStub.java
index 5f01a6009974..508d9f616566 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcKeyManagementServiceStub.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/GrpcKeyManagementServiceStub.java
@@ -104,6 +104,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcKeyManagementServiceStub extends KeyManagementServiceStub {
   private static final MethodDescriptor<ListKeyRingsRequest, ListKeyRingsResponse>
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HsmManagementStub.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HsmManagementStub.java
index c1119eff207e..4a2bfec21eda 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HsmManagementStub.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HsmManagementStub.java
@@ -54,6 +54,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class HsmManagementStub implements BackgroundResource {
 
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HsmManagementStubSettings.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HsmManagementStubSettings.java
index a9922752a1ee..584c7d133ac1 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HsmManagementStubSettings.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HsmManagementStubSettings.java
@@ -88,6 +88,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -165,6 +166,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class HsmManagementStubSettings extends StubSettings<HsmManagementStubSettings> {
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonAutokeyAdminCallableFactory.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonAutokeyAdminCallableFactory.java
index 14eddd5b1d21..97266d3dacaf 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonAutokeyAdminCallableFactory.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonAutokeyAdminCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAutokeyAdminCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonAutokeyAdminStub.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonAutokeyAdminStub.java
index a3f3d10d8b43..1a5823584fd2 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonAutokeyAdminStub.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonAutokeyAdminStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAutokeyAdminStub extends AutokeyAdminStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonAutokeyCallableFactory.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonAutokeyCallableFactory.java
index 3e186284426d..d836df2f3504 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonAutokeyCallableFactory.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonAutokeyCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAutokeyCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonAutokeyStub.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonAutokeyStub.java
index d3880d96ae6b..590f0d14f616 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonAutokeyStub.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonAutokeyStub.java
@@ -60,6 +60,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAutokeyStub extends AutokeyStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonEkmServiceCallableFactory.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonEkmServiceCallableFactory.java
index 9c60822a0aa3..0962208707ac 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonEkmServiceCallableFactory.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonEkmServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEkmServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonEkmServiceStub.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonEkmServiceStub.java
index bc822d25b3cf..bc4d1c6ed4db 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonEkmServiceStub.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonEkmServiceStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEkmServiceStub extends EkmServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonHsmManagementCallableFactory.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonHsmManagementCallableFactory.java
index 0f1086e53086..0114304287c3 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonHsmManagementCallableFactory.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonHsmManagementCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonHsmManagementCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonHsmManagementStub.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonHsmManagementStub.java
index 126ebd7cbd81..8b7fc7b7e3f5 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonHsmManagementStub.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonHsmManagementStub.java
@@ -74,6 +74,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonHsmManagementStub extends HsmManagementStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonKeyManagementServiceCallableFactory.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonKeyManagementServiceCallableFactory.java
index 3a5f7407bde5..78297e8e3e5b 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonKeyManagementServiceCallableFactory.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonKeyManagementServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonKeyManagementServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonKeyManagementServiceStub.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonKeyManagementServiceStub.java
index 75a57272b226..c2b31dfefbfc 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonKeyManagementServiceStub.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/HttpJsonKeyManagementServiceStub.java
@@ -115,6 +115,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonKeyManagementServiceStub extends KeyManagementServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/KeyManagementServiceStub.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/KeyManagementServiceStub.java
index 0b18b46681ce..412f8fa7a9cc 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/KeyManagementServiceStub.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/KeyManagementServiceStub.java
@@ -95,6 +95,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class KeyManagementServiceStub implements BackgroundResource {
 
diff --git a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/KeyManagementServiceStubSettings.java b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/KeyManagementServiceStubSettings.java
index 040aae42b7d1..6747a083655f 100644
--- a/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/KeyManagementServiceStubSettings.java
+++ b/java-kms/google-cloud-kms/src/main/java/com/google/cloud/kms/v1/stub/KeyManagementServiceStubSettings.java
@@ -129,6 +129,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -207,6 +208,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class KeyManagementServiceStubSettings
diff --git a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/AutokeyConfigName.java b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/AutokeyConfigName.java
index 8883d910f827..16eaee2f3d73 100644
--- a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/AutokeyConfigName.java
+++ b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/AutokeyConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutokeyConfigName implements ResourceName {
   private static final PathTemplate FOLDER =
diff --git a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/CryptoKeyName.java b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/CryptoKeyName.java
index 73cfdc3988a2..bd0052b559b0 100644
--- a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/CryptoKeyName.java
+++ b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/CryptoKeyName.java
@@ -24,8 +24,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CryptoKeyName extends KeyName {
   private static final PathTemplate PROJECT_LOCATION_KEY_RING_CRYPTO_KEY =
diff --git a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/CryptoKeyVersionName.java b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/CryptoKeyVersionName.java
index 94c1acf7d3b3..c874db01eba9 100644
--- a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/CryptoKeyVersionName.java
+++ b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/CryptoKeyVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CryptoKeyVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_KEY_RING_CRYPTO_KEY_CRYPTO_KEY_VERSION =
diff --git a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/EkmConfigName.java b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/EkmConfigName.java
index dee47678dda6..605a5effe045 100644
--- a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/EkmConfigName.java
+++ b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/EkmConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EkmConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/EkmConnectionName.java b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/EkmConnectionName.java
index 8b130a7723e4..917ea3cf717f 100644
--- a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/EkmConnectionName.java
+++ b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/EkmConnectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EkmConnectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_EKM_CONNECTION =
diff --git a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/ImportJobName.java b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/ImportJobName.java
index 38d3595e2e1f..11769b9fcaec 100644
--- a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/ImportJobName.java
+++ b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/ImportJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ImportJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_KEY_RING_IMPORT_JOB =
diff --git a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/KeyHandleName.java b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/KeyHandleName.java
index 17552148b4e7..ffd652354429 100644
--- a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/KeyHandleName.java
+++ b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/KeyHandleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class KeyHandleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_KEY_HANDLE =
diff --git a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/KeyRingName.java b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/KeyRingName.java
index 34f0bc79fa6e..a6e4ea9a12bd 100644
--- a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/KeyRingName.java
+++ b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/KeyRingName.java
@@ -24,8 +24,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class KeyRingName extends KeyName {
   private static final PathTemplate PROJECT_LOCATION_KEY_RING =
diff --git a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/LocationName.java b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/LocationName.java
index 7c0935ae37dc..8d115370779b 100644
--- a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/LocationName.java
+++ b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/ProjectName.java b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/ProjectName.java
index 86219853832f..c7a8c3d405b6 100644
--- a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/ProjectName.java
+++ b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/RetiredResourceName.java b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/RetiredResourceName.java
index f72d2fc468f4..c46b49750b7c 100644
--- a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/RetiredResourceName.java
+++ b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/RetiredResourceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RetiredResourceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RETIRED_RESOURCE =
diff --git a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/SingleTenantHsmInstanceName.java b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/SingleTenantHsmInstanceName.java
index d68a84a032f1..1c30e0a85889 100644
--- a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/SingleTenantHsmInstanceName.java
+++ b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/SingleTenantHsmInstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SingleTenantHsmInstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SINGLE_TENANT_HSM_INSTANCE =
diff --git a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/SingleTenantHsmInstanceProposalName.java b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/SingleTenantHsmInstanceProposalName.java
index 787cc70a6eec..c604a3ea1a5d 100644
--- a/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/SingleTenantHsmInstanceProposalName.java
+++ b/java-kms/proto-google-cloud-kms-v1/src/main/java/com/google/cloud/kms/v1/SingleTenantHsmInstanceProposalName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SingleTenantHsmInstanceProposalName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SINGLE_TENANT_HSM_INSTANCE_PROPOSAL =
diff --git a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/KeyDashboardServiceClient.java b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/KeyDashboardServiceClient.java
index da89a088b45c..6f418169e476 100644
--- a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/KeyDashboardServiceClient.java
+++ b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/KeyDashboardServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -143,6 +144,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class KeyDashboardServiceClient implements BackgroundResource {
   private final KeyDashboardServiceSettings settings;
diff --git a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/KeyDashboardServiceSettings.java b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/KeyDashboardServiceSettings.java
index 7d47b1772e0f..db51b12b949f 100644
--- a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/KeyDashboardServiceSettings.java
+++ b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/KeyDashboardServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class KeyDashboardServiceSettings extends ClientSettings<KeyDashboardServiceSettings> {
 
diff --git a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/KeyTrackingServiceClient.java b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/KeyTrackingServiceClient.java
index aef4e8f03696..2c3d138705bc 100644
--- a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/KeyTrackingServiceClient.java
+++ b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/KeyTrackingServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -168,6 +169,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class KeyTrackingServiceClient implements BackgroundResource {
   private final KeyTrackingServiceSettings settings;
diff --git a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/KeyTrackingServiceSettings.java b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/KeyTrackingServiceSettings.java
index aabceab0e5ff..97fbdb043d6f 100644
--- a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/KeyTrackingServiceSettings.java
+++ b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/KeyTrackingServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class KeyTrackingServiceSettings extends ClientSettings<KeyTrackingServiceSettings> {
 
diff --git a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/GrpcKeyDashboardServiceCallableFactory.java b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/GrpcKeyDashboardServiceCallableFactory.java
index bc4f2356b035..07c7a482b2a6 100644
--- a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/GrpcKeyDashboardServiceCallableFactory.java
+++ b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/GrpcKeyDashboardServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcKeyDashboardServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/GrpcKeyDashboardServiceStub.java b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/GrpcKeyDashboardServiceStub.java
index eba75e7004d9..74989a2d2f84 100644
--- a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/GrpcKeyDashboardServiceStub.java
+++ b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/GrpcKeyDashboardServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcKeyDashboardServiceStub extends KeyDashboardServiceStub {
   private static final MethodDescriptor<ListCryptoKeysRequest, ListCryptoKeysResponse>
diff --git a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/GrpcKeyTrackingServiceCallableFactory.java b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/GrpcKeyTrackingServiceCallableFactory.java
index 7ae3f751871f..b4672e6ee12c 100644
--- a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/GrpcKeyTrackingServiceCallableFactory.java
+++ b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/GrpcKeyTrackingServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcKeyTrackingServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/GrpcKeyTrackingServiceStub.java b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/GrpcKeyTrackingServiceStub.java
index 603b157d00c7..450d67888194 100644
--- a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/GrpcKeyTrackingServiceStub.java
+++ b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/GrpcKeyTrackingServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcKeyTrackingServiceStub extends KeyTrackingServiceStub {
   private static final MethodDescriptor<
diff --git a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/HttpJsonKeyDashboardServiceCallableFactory.java b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/HttpJsonKeyDashboardServiceCallableFactory.java
index 7f870146e41d..b28b28281a9c 100644
--- a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/HttpJsonKeyDashboardServiceCallableFactory.java
+++ b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/HttpJsonKeyDashboardServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonKeyDashboardServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/HttpJsonKeyDashboardServiceStub.java b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/HttpJsonKeyDashboardServiceStub.java
index 007a1480d89e..5695da3e6f02 100644
--- a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/HttpJsonKeyDashboardServiceStub.java
+++ b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/HttpJsonKeyDashboardServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonKeyDashboardServiceStub extends KeyDashboardServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/HttpJsonKeyTrackingServiceCallableFactory.java b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/HttpJsonKeyTrackingServiceCallableFactory.java
index 3564af2e2598..21379fa4c29b 100644
--- a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/HttpJsonKeyTrackingServiceCallableFactory.java
+++ b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/HttpJsonKeyTrackingServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonKeyTrackingServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/HttpJsonKeyTrackingServiceStub.java b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/HttpJsonKeyTrackingServiceStub.java
index 0ef244053249..0ca8a3662e9b 100644
--- a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/HttpJsonKeyTrackingServiceStub.java
+++ b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/HttpJsonKeyTrackingServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonKeyTrackingServiceStub extends KeyTrackingServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/KeyDashboardServiceStub.java b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/KeyDashboardServiceStub.java
index 564668c44e2d..9a62ea81f8e3 100644
--- a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/KeyDashboardServiceStub.java
+++ b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/KeyDashboardServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.cloud.kms.inventory.v1.ListCryptoKeysRequest;
 import com.google.cloud.kms.inventory.v1.ListCryptoKeysResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class KeyDashboardServiceStub implements BackgroundResource {
 
diff --git a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/KeyDashboardServiceStubSettings.java b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/KeyDashboardServiceStubSettings.java
index ddde57c765da..cb9e0c729cd7 100644
--- a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/KeyDashboardServiceStubSettings.java
+++ b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/KeyDashboardServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class KeyDashboardServiceStubSettings extends StubSettings<KeyDashboardServiceStubSettings> {
diff --git a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/KeyTrackingServiceStub.java b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/KeyTrackingServiceStub.java
index e84ed0052844..f72633d058ac 100644
--- a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/KeyTrackingServiceStub.java
+++ b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/KeyTrackingServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.cloud.kms.inventory.v1.SearchProtectedResourcesRequest;
 import com.google.cloud.kms.inventory.v1.SearchProtectedResourcesResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class KeyTrackingServiceStub implements BackgroundResource {
 
diff --git a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/KeyTrackingServiceStubSettings.java b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/KeyTrackingServiceStubSettings.java
index 22156676ae3b..2323f29bc115 100644
--- a/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/KeyTrackingServiceStubSettings.java
+++ b/java-kmsinventory/google-cloud-kmsinventory/src/main/java/com/google/cloud/kms/inventory/v1/stub/KeyTrackingServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class KeyTrackingServiceStubSettings extends StubSettings<KeyTrackingServiceStubSettings> {
diff --git a/java-kmsinventory/proto-google-cloud-kmsinventory-v1/src/main/java/com/google/cloud/kms/inventory/v1/OrganizationName.java b/java-kmsinventory/proto-google-cloud-kmsinventory-v1/src/main/java/com/google/cloud/kms/inventory/v1/OrganizationName.java
index 92be036f4372..16c597fb2410 100644
--- a/java-kmsinventory/proto-google-cloud-kmsinventory-v1/src/main/java/com/google/cloud/kms/inventory/v1/OrganizationName.java
+++ b/java-kmsinventory/proto-google-cloud-kmsinventory-v1/src/main/java/com/google/cloud/kms/inventory/v1/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-kmsinventory/proto-google-cloud-kmsinventory-v1/src/main/java/com/google/cloud/kms/inventory/v1/ProjectName.java b/java-kmsinventory/proto-google-cloud-kmsinventory-v1/src/main/java/com/google/cloud/kms/inventory/v1/ProjectName.java
index 610a82a66f4b..362b03082896 100644
--- a/java-kmsinventory/proto-google-cloud-kmsinventory-v1/src/main/java/com/google/cloud/kms/inventory/v1/ProjectName.java
+++ b/java-kmsinventory/proto-google-cloud-kmsinventory-v1/src/main/java/com/google/cloud/kms/inventory/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-kmsinventory/proto-google-cloud-kmsinventory-v1/src/main/java/com/google/cloud/kms/inventory/v1/ProtectedResourceScopeName.java b/java-kmsinventory/proto-google-cloud-kmsinventory-v1/src/main/java/com/google/cloud/kms/inventory/v1/ProtectedResourceScopeName.java
index 9c3f3d4890c4..bb35cc38cbf2 100644
--- a/java-kmsinventory/proto-google-cloud-kmsinventory-v1/src/main/java/com/google/cloud/kms/inventory/v1/ProtectedResourceScopeName.java
+++ b/java-kmsinventory/proto-google-cloud-kmsinventory-v1/src/main/java/com/google/cloud/kms/inventory/v1/ProtectedResourceScopeName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProtectedResourceScopeName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-kmsinventory/proto-google-cloud-kmsinventory-v1/src/main/java/com/google/cloud/kms/inventory/v1/ProtectedResourcesSummaryName.java b/java-kmsinventory/proto-google-cloud-kmsinventory-v1/src/main/java/com/google/cloud/kms/inventory/v1/ProtectedResourcesSummaryName.java
index 881e8d4c2505..126cfb038bcc 100644
--- a/java-kmsinventory/proto-google-cloud-kmsinventory-v1/src/main/java/com/google/cloud/kms/inventory/v1/ProtectedResourcesSummaryName.java
+++ b/java-kmsinventory/proto-google-cloud-kmsinventory-v1/src/main/java/com/google/cloud/kms/inventory/v1/ProtectedResourcesSummaryName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProtectedResourcesSummaryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_KEY_RING_CRYPTO_KEY =
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/LanguageServiceClient.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/LanguageServiceClient.java
index 5184c5149218..8452a04d746c 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/LanguageServiceClient.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/LanguageServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -244,6 +245,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LanguageServiceClient implements BackgroundResource {
   private final LanguageServiceSettings settings;
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/LanguageServiceSettings.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/LanguageServiceSettings.java
index a62fb1602913..51d9fa12e5a9 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/LanguageServiceSettings.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/LanguageServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LanguageServiceSettings extends ClientSettings<LanguageServiceSettings> {
 
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/GrpcLanguageServiceCallableFactory.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/GrpcLanguageServiceCallableFactory.java
index 7e873a105c29..f9a7ef961161 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/GrpcLanguageServiceCallableFactory.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/GrpcLanguageServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLanguageServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/GrpcLanguageServiceStub.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/GrpcLanguageServiceStub.java
index f720905fe7bf..dd0ca1d040e6 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/GrpcLanguageServiceStub.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/GrpcLanguageServiceStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLanguageServiceStub extends LanguageServiceStub {
   private static final MethodDescriptor<AnalyzeSentimentRequest, AnalyzeSentimentResponse>
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/HttpJsonLanguageServiceCallableFactory.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/HttpJsonLanguageServiceCallableFactory.java
index 6b2b9ac6b561..3ded4321fadd 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/HttpJsonLanguageServiceCallableFactory.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/HttpJsonLanguageServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLanguageServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/HttpJsonLanguageServiceStub.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/HttpJsonLanguageServiceStub.java
index 41af2db94986..473ac583257d 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/HttpJsonLanguageServiceStub.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/HttpJsonLanguageServiceStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLanguageServiceStub extends LanguageServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/LanguageServiceStub.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/LanguageServiceStub.java
index 9529a3514a29..f8b64014dadf 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/LanguageServiceStub.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/LanguageServiceStub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.language.v1.ModerateTextRequest;
 import com.google.cloud.language.v1.ModerateTextResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LanguageServiceStub implements BackgroundResource {
 
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/LanguageServiceStubSettings.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/LanguageServiceStubSettings.java
index 84af56be0f07..9ab1a086f7bd 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/LanguageServiceStubSettings.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1/stub/LanguageServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LanguageServiceStubSettings extends StubSettings<LanguageServiceStubSettings> {
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/LanguageServiceClient.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/LanguageServiceClient.java
index aefc3c8b5b62..fc7a3cfdbce3 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/LanguageServiceClient.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/LanguageServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -245,6 +246,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LanguageServiceClient implements BackgroundResource {
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/LanguageServiceSettings.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/LanguageServiceSettings.java
index 4f6683753bcd..1abebfeb7588 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/LanguageServiceSettings.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/LanguageServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LanguageServiceSettings extends ClientSettings<LanguageServiceSettings> {
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/GrpcLanguageServiceCallableFactory.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/GrpcLanguageServiceCallableFactory.java
index 966a1e97148c..30c2ccb1ea32 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/GrpcLanguageServiceCallableFactory.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/GrpcLanguageServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLanguageServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/GrpcLanguageServiceStub.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/GrpcLanguageServiceStub.java
index 8a075772bde5..c3061cbaffd7 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/GrpcLanguageServiceStub.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/GrpcLanguageServiceStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLanguageServiceStub extends LanguageServiceStub {
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/HttpJsonLanguageServiceCallableFactory.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/HttpJsonLanguageServiceCallableFactory.java
index 609da31b82cb..10d76e6f433b 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/HttpJsonLanguageServiceCallableFactory.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/HttpJsonLanguageServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonLanguageServiceCallableFactory
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/HttpJsonLanguageServiceStub.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/HttpJsonLanguageServiceStub.java
index cb9b8b5f32a0..aea9185db45e 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/HttpJsonLanguageServiceStub.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/HttpJsonLanguageServiceStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonLanguageServiceStub extends LanguageServiceStub {
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/LanguageServiceStub.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/LanguageServiceStub.java
index af3b894d206f..df60de86f0d3 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/LanguageServiceStub.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/LanguageServiceStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.language.v1beta2.ModerateTextRequest;
 import com.google.cloud.language.v1beta2.ModerateTextResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class LanguageServiceStub implements BackgroundResource {
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/LanguageServiceStubSettings.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/LanguageServiceStubSettings.java
index 1a8538dd6479..268d36541827 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/LanguageServiceStubSettings.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v1beta2/stub/LanguageServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/LanguageServiceClient.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/LanguageServiceClient.java
index 7ea31f837f06..a772f94631b7 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/LanguageServiceClient.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/LanguageServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -206,6 +207,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LanguageServiceClient implements BackgroundResource {
   private final LanguageServiceSettings settings;
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/LanguageServiceSettings.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/LanguageServiceSettings.java
index 0ffc1ea523f0..f1c4d8f5fa87 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/LanguageServiceSettings.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/LanguageServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LanguageServiceSettings extends ClientSettings<LanguageServiceSettings> {
 
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/GrpcLanguageServiceCallableFactory.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/GrpcLanguageServiceCallableFactory.java
index baa4fc5ff8d7..bdd8e6bf2a13 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/GrpcLanguageServiceCallableFactory.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/GrpcLanguageServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLanguageServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/GrpcLanguageServiceStub.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/GrpcLanguageServiceStub.java
index c6bf005d0132..4773427e1311 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/GrpcLanguageServiceStub.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/GrpcLanguageServiceStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLanguageServiceStub extends LanguageServiceStub {
   private static final MethodDescriptor<AnalyzeSentimentRequest, AnalyzeSentimentResponse>
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/HttpJsonLanguageServiceCallableFactory.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/HttpJsonLanguageServiceCallableFactory.java
index 0a026e047be0..9e82a4ac979a 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/HttpJsonLanguageServiceCallableFactory.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/HttpJsonLanguageServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLanguageServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/HttpJsonLanguageServiceStub.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/HttpJsonLanguageServiceStub.java
index 49cf5b5ec53d..c2bdd3ce5c83 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/HttpJsonLanguageServiceStub.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/HttpJsonLanguageServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLanguageServiceStub extends LanguageServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/LanguageServiceStub.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/LanguageServiceStub.java
index 45ff831717dd..7a76689a582d 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/LanguageServiceStub.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/LanguageServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.language.v2.ModerateTextRequest;
 import com.google.cloud.language.v2.ModerateTextResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LanguageServiceStub implements BackgroundResource {
 
diff --git a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/LanguageServiceStubSettings.java b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/LanguageServiceStubSettings.java
index 8e0858ae4d77..59947699655e 100644
--- a/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/LanguageServiceStubSettings.java
+++ b/java-language/google-cloud-language/src/main/java/com/google/cloud/language/v2/stub/LanguageServiceStubSettings.java
@@ -54,6 +54,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -105,6 +106,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LanguageServiceStubSettings extends StubSettings<LanguageServiceStubSettings> {
diff --git a/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/LicenseManagerClient.java b/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/LicenseManagerClient.java
index 491c28c1f5ac..64681c35bdd7 100644
--- a/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/LicenseManagerClient.java
+++ b/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/LicenseManagerClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -412,6 +413,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LicenseManagerClient implements BackgroundResource {
   private final LicenseManagerSettings settings;
diff --git a/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/LicenseManagerSettings.java b/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/LicenseManagerSettings.java
index 1c94b6953bd7..a527d0046b90 100644
--- a/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/LicenseManagerSettings.java
+++ b/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/LicenseManagerSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LicenseManagerSettings extends ClientSettings<LicenseManagerSettings> {
 
diff --git a/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/GrpcLicenseManagerCallableFactory.java b/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/GrpcLicenseManagerCallableFactory.java
index 24b0eda26130..9d6598ebc19c 100644
--- a/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/GrpcLicenseManagerCallableFactory.java
+++ b/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/GrpcLicenseManagerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLicenseManagerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/GrpcLicenseManagerStub.java b/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/GrpcLicenseManagerStub.java
index af823cdfe4a4..0284818a0481 100644
--- a/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/GrpcLicenseManagerStub.java
+++ b/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/GrpcLicenseManagerStub.java
@@ -64,6 +64,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLicenseManagerStub extends LicenseManagerStub {
   private static final MethodDescriptor<ListConfigurationsRequest, ListConfigurationsResponse>
diff --git a/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/HttpJsonLicenseManagerCallableFactory.java b/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/HttpJsonLicenseManagerCallableFactory.java
index 76746b73385f..60d8d5fb7719 100644
--- a/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/HttpJsonLicenseManagerCallableFactory.java
+++ b/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/HttpJsonLicenseManagerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLicenseManagerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/HttpJsonLicenseManagerStub.java b/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/HttpJsonLicenseManagerStub.java
index c0778ffb8c74..7e6b0a61c102 100644
--- a/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/HttpJsonLicenseManagerStub.java
+++ b/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/HttpJsonLicenseManagerStub.java
@@ -75,6 +75,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLicenseManagerStub extends LicenseManagerStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/LicenseManagerStub.java b/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/LicenseManagerStub.java
index 3aa3d455e456..ee088f6d770e 100644
--- a/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/LicenseManagerStub.java
+++ b/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/LicenseManagerStub.java
@@ -55,6 +55,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LicenseManagerStub implements BackgroundResource {
 
diff --git a/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/LicenseManagerStubSettings.java b/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/LicenseManagerStubSettings.java
index 8486b26880f8..d59425f7f692 100644
--- a/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/LicenseManagerStubSettings.java
+++ b/java-licensemanager/google-cloud-licensemanager/src/main/java/com/google/cloud/licensemanager/v1/stub/LicenseManagerStubSettings.java
@@ -90,6 +90,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -168,6 +169,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LicenseManagerStubSettings extends StubSettings<LicenseManagerStubSettings> {
diff --git a/java-licensemanager/proto-google-cloud-licensemanager-v1/src/main/java/com/google/cloud/licensemanager/v1/ConfigurationName.java b/java-licensemanager/proto-google-cloud-licensemanager-v1/src/main/java/com/google/cloud/licensemanager/v1/ConfigurationName.java
index cb3994a313fe..b0fd857bc4fa 100644
--- a/java-licensemanager/proto-google-cloud-licensemanager-v1/src/main/java/com/google/cloud/licensemanager/v1/ConfigurationName.java
+++ b/java-licensemanager/proto-google-cloud-licensemanager-v1/src/main/java/com/google/cloud/licensemanager/v1/ConfigurationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConfigurationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONFIGURATION =
diff --git a/java-licensemanager/proto-google-cloud-licensemanager-v1/src/main/java/com/google/cloud/licensemanager/v1/InstanceName.java b/java-licensemanager/proto-google-cloud-licensemanager-v1/src/main/java/com/google/cloud/licensemanager/v1/InstanceName.java
index cdfd20e5ddee..7463a7f2ba8d 100644
--- a/java-licensemanager/proto-google-cloud-licensemanager-v1/src/main/java/com/google/cloud/licensemanager/v1/InstanceName.java
+++ b/java-licensemanager/proto-google-cloud-licensemanager-v1/src/main/java/com/google/cloud/licensemanager/v1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-licensemanager/proto-google-cloud-licensemanager-v1/src/main/java/com/google/cloud/licensemanager/v1/LocationName.java b/java-licensemanager/proto-google-cloud-licensemanager-v1/src/main/java/com/google/cloud/licensemanager/v1/LocationName.java
index eaef8ab337e2..2de58df7b457 100644
--- a/java-licensemanager/proto-google-cloud-licensemanager-v1/src/main/java/com/google/cloud/licensemanager/v1/LocationName.java
+++ b/java-licensemanager/proto-google-cloud-licensemanager-v1/src/main/java/com/google/cloud/licensemanager/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-licensemanager/proto-google-cloud-licensemanager-v1/src/main/java/com/google/cloud/licensemanager/v1/ProductName.java b/java-licensemanager/proto-google-cloud-licensemanager-v1/src/main/java/com/google/cloud/licensemanager/v1/ProductName.java
index 1cae5a7eefbc..6d03cce03565 100644
--- a/java-licensemanager/proto-google-cloud-licensemanager-v1/src/main/java/com/google/cloud/licensemanager/v1/ProductName.java
+++ b/java-licensemanager/proto-google-cloud-licensemanager-v1/src/main/java/com/google/cloud/licensemanager/v1/ProductName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRODUCT =
diff --git a/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/WorkflowsServiceV2BetaClient.java b/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/WorkflowsServiceV2BetaClient.java
index cb94035c362d..0760ca86ee36 100644
--- a/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/WorkflowsServiceV2BetaClient.java
+++ b/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/WorkflowsServiceV2BetaClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -179,6 +180,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class WorkflowsServiceV2BetaClient implements BackgroundResource {
diff --git a/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/WorkflowsServiceV2BetaSettings.java b/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/WorkflowsServiceV2BetaSettings.java
index 78742b610502..ed581d4fb12e 100644
--- a/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/WorkflowsServiceV2BetaSettings.java
+++ b/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/WorkflowsServiceV2BetaSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class WorkflowsServiceV2BetaSettings extends ClientSettings<WorkflowsServiceV2BetaSettings> {
diff --git a/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/GrpcWorkflowsServiceV2BetaCallableFactory.java b/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/GrpcWorkflowsServiceV2BetaCallableFactory.java
index d6b62b5d2088..bfba68fa2448 100644
--- a/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/GrpcWorkflowsServiceV2BetaCallableFactory.java
+++ b/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/GrpcWorkflowsServiceV2BetaCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcWorkflowsServiceV2BetaCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/GrpcWorkflowsServiceV2BetaStub.java b/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/GrpcWorkflowsServiceV2BetaStub.java
index 315276a885aa..008d0791e623 100644
--- a/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/GrpcWorkflowsServiceV2BetaStub.java
+++ b/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/GrpcWorkflowsServiceV2BetaStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcWorkflowsServiceV2BetaStub extends WorkflowsServiceV2BetaStub {
diff --git a/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/HttpJsonWorkflowsServiceV2BetaCallableFactory.java b/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/HttpJsonWorkflowsServiceV2BetaCallableFactory.java
index 263175472314..4d9d3c82af58 100644
--- a/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/HttpJsonWorkflowsServiceV2BetaCallableFactory.java
+++ b/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/HttpJsonWorkflowsServiceV2BetaCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonWorkflowsServiceV2BetaCallableFactory
diff --git a/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/HttpJsonWorkflowsServiceV2BetaStub.java b/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/HttpJsonWorkflowsServiceV2BetaStub.java
index b5dbd62a7c7f..61834b7db791 100644
--- a/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/HttpJsonWorkflowsServiceV2BetaStub.java
+++ b/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/HttpJsonWorkflowsServiceV2BetaStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonWorkflowsServiceV2BetaStub extends WorkflowsServiceV2BetaStub {
diff --git a/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/WorkflowsServiceV2BetaStub.java b/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/WorkflowsServiceV2BetaStub.java
index 98e9e879a8ac..d31741c70433 100644
--- a/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/WorkflowsServiceV2BetaStub.java
+++ b/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/WorkflowsServiceV2BetaStub.java
@@ -32,6 +32,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class WorkflowsServiceV2BetaStub implements BackgroundResource {
diff --git a/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/WorkflowsServiceV2BetaStubSettings.java b/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/WorkflowsServiceV2BetaStubSettings.java
index 4d5669086508..f7d0ebb2a74d 100644
--- a/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/WorkflowsServiceV2BetaStubSettings.java
+++ b/java-life-sciences/google-cloud-life-sciences/src/main/java/com/google/cloud/lifesciences/v2beta/stub/WorkflowsServiceV2BetaStubSettings.java
@@ -65,6 +65,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -143,6 +144,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/CloudLocationFinderClient.java b/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/CloudLocationFinderClient.java
index 15c0e384c8bb..b6ee12e54bad 100644
--- a/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/CloudLocationFinderClient.java
+++ b/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/CloudLocationFinderClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -181,6 +182,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudLocationFinderClient implements BackgroundResource {
   private final CloudLocationFinderSettings settings;
diff --git a/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/CloudLocationFinderSettings.java b/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/CloudLocationFinderSettings.java
index 90b7f2e9e56c..044d2edb85e7 100644
--- a/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/CloudLocationFinderSettings.java
+++ b/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/CloudLocationFinderSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudLocationFinderSettings extends ClientSettings<CloudLocationFinderSettings> {
 
diff --git a/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/CloudLocationFinderStub.java b/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/CloudLocationFinderStub.java
index de4c0be2fd5e..9f5a7b269b10 100644
--- a/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/CloudLocationFinderStub.java
+++ b/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/CloudLocationFinderStub.java
@@ -28,6 +28,7 @@
 import com.google.cloud.locationfinder.v1.SearchCloudLocationsRequest;
 import com.google.cloud.locationfinder.v1.SearchCloudLocationsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CloudLocationFinderStub implements BackgroundResource {
 
diff --git a/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/CloudLocationFinderStubSettings.java b/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/CloudLocationFinderStubSettings.java
index 6e0f8b1ad4f1..8d49b9e87cc5 100644
--- a/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/CloudLocationFinderStubSettings.java
+++ b/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/CloudLocationFinderStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CloudLocationFinderStubSettings extends StubSettings<CloudLocationFinderStubSettings> {
diff --git a/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/GrpcCloudLocationFinderCallableFactory.java b/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/GrpcCloudLocationFinderCallableFactory.java
index a7fe6a57abda..d4f2ab2e29a1 100644
--- a/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/GrpcCloudLocationFinderCallableFactory.java
+++ b/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/GrpcCloudLocationFinderCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudLocationFinderCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/GrpcCloudLocationFinderStub.java b/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/GrpcCloudLocationFinderStub.java
index 4ef6c33004c4..fb3156f3552f 100644
--- a/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/GrpcCloudLocationFinderStub.java
+++ b/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/GrpcCloudLocationFinderStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudLocationFinderStub extends CloudLocationFinderStub {
   private static final MethodDescriptor<ListCloudLocationsRequest, ListCloudLocationsResponse>
diff --git a/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/HttpJsonCloudLocationFinderCallableFactory.java b/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/HttpJsonCloudLocationFinderCallableFactory.java
index ed9ee94d8388..3a4f3dbac1f4 100644
--- a/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/HttpJsonCloudLocationFinderCallableFactory.java
+++ b/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/HttpJsonCloudLocationFinderCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudLocationFinderCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/HttpJsonCloudLocationFinderStub.java b/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/HttpJsonCloudLocationFinderStub.java
index f7ba31ce997d..322d6cf68244 100644
--- a/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/HttpJsonCloudLocationFinderStub.java
+++ b/java-locationfinder/google-cloud-locationfinder/src/main/java/com/google/cloud/locationfinder/v1/stub/HttpJsonCloudLocationFinderStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudLocationFinderStub extends CloudLocationFinderStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-locationfinder/proto-google-cloud-locationfinder-v1/src/main/java/com/google/cloud/locationfinder/v1/CloudLocationName.java b/java-locationfinder/proto-google-cloud-locationfinder-v1/src/main/java/com/google/cloud/locationfinder/v1/CloudLocationName.java
index 5f414c9bdc91..afe22a480310 100644
--- a/java-locationfinder/proto-google-cloud-locationfinder-v1/src/main/java/com/google/cloud/locationfinder/v1/CloudLocationName.java
+++ b/java-locationfinder/proto-google-cloud-locationfinder-v1/src/main/java/com/google/cloud/locationfinder/v1/CloudLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudLocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLOUD_LOCATION =
diff --git a/java-locationfinder/proto-google-cloud-locationfinder-v1/src/main/java/com/google/cloud/locationfinder/v1/LocationName.java b/java-locationfinder/proto-google-cloud-locationfinder-v1/src/main/java/com/google/cloud/locationfinder/v1/LocationName.java
index 8053c73aa30a..02fa2b4a9966 100644
--- a/java-locationfinder/proto-google-cloud-locationfinder-v1/src/main/java/com/google/cloud/locationfinder/v1/LocationName.java
+++ b/java-locationfinder/proto-google-cloud-locationfinder-v1/src/main/java/com/google/cloud/locationfinder/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/ConfigClient.java b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/ConfigClient.java
index d25b884912d0..023b7836d0e4 100644
--- a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/ConfigClient.java
+++ b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/ConfigClient.java
@@ -96,6 +96,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -751,6 +752,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConfigClient implements BackgroundResource {
   private final ConfigSettings settings;
diff --git a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/ConfigSettings.java b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/ConfigSettings.java
index 9271cadd4a92..bfbee5899272 100644
--- a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/ConfigSettings.java
+++ b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/ConfigSettings.java
@@ -85,6 +85,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -160,6 +161,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConfigSettings extends ClientSettings<ConfigSettings> {
 
diff --git a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/LoggingClient.java b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/LoggingClient.java
index a8a708078412..03f5ae310809 100644
--- a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/LoggingClient.java
+++ b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/LoggingClient.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -228,6 +229,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LoggingClient implements BackgroundResource {
   private final LoggingSettings settings;
diff --git a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/LoggingSettings.java b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/LoggingSettings.java
index 075c50372611..f5586807e30b 100644
--- a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/LoggingSettings.java
+++ b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/LoggingSettings.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LoggingSettings extends ClientSettings<LoggingSettings> {
 
diff --git a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/MetricsClient.java b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/MetricsClient.java
index 8ee3f62074e8..298de5923a4d 100644
--- a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/MetricsClient.java
+++ b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/MetricsClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -207,6 +208,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetricsClient implements BackgroundResource {
   private final MetricsSettings settings;
diff --git a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/MetricsSettings.java b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/MetricsSettings.java
index ab6816ecdaf4..89db1c653f4d 100644
--- a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/MetricsSettings.java
+++ b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/MetricsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetricsSettings extends ClientSettings<MetricsSettings> {
 
diff --git a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/ConfigServiceV2Stub.java b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/ConfigServiceV2Stub.java
index ba40b213bde3..361610f53074 100644
--- a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/ConfigServiceV2Stub.java
+++ b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/ConfigServiceV2Stub.java
@@ -75,6 +75,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ConfigServiceV2Stub implements BackgroundResource {
 
diff --git a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/ConfigServiceV2StubSettings.java b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/ConfigServiceV2StubSettings.java
index c0e12f11c851..6cf934ed1fa6 100644
--- a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/ConfigServiceV2StubSettings.java
+++ b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/ConfigServiceV2StubSettings.java
@@ -105,6 +105,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -182,6 +183,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ConfigServiceV2StubSettings extends StubSettings<ConfigServiceV2StubSettings> {
diff --git a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcConfigServiceV2CallableFactory.java b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcConfigServiceV2CallableFactory.java
index e37c3746ba55..7848f2f91655 100644
--- a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcConfigServiceV2CallableFactory.java
+++ b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcConfigServiceV2CallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConfigServiceV2CallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcConfigServiceV2Stub.java b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcConfigServiceV2Stub.java
index cba2e58cd866..94d86047edf0 100644
--- a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcConfigServiceV2Stub.java
+++ b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcConfigServiceV2Stub.java
@@ -84,6 +84,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConfigServiceV2Stub extends ConfigServiceV2Stub {
   private static final MethodDescriptor<ListBucketsRequest, ListBucketsResponse>
diff --git a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcLoggingServiceV2CallableFactory.java b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcLoggingServiceV2CallableFactory.java
index 2ea721e819a5..0e603e59e1f7 100644
--- a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcLoggingServiceV2CallableFactory.java
+++ b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcLoggingServiceV2CallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLoggingServiceV2CallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcLoggingServiceV2Stub.java b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcLoggingServiceV2Stub.java
index 433e8a476ac4..12f9c5cc3e64 100644
--- a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcLoggingServiceV2Stub.java
+++ b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcLoggingServiceV2Stub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLoggingServiceV2Stub extends LoggingServiceV2Stub {
   private static final MethodDescriptor<DeleteLogRequest, Empty> deleteLogMethodDescriptor =
diff --git a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcMetricsServiceV2CallableFactory.java b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcMetricsServiceV2CallableFactory.java
index d64bb1b3fb61..b86840e0dd06 100644
--- a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcMetricsServiceV2CallableFactory.java
+++ b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcMetricsServiceV2CallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMetricsServiceV2CallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcMetricsServiceV2Stub.java b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcMetricsServiceV2Stub.java
index e3291e656a45..cece306268c2 100644
--- a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcMetricsServiceV2Stub.java
+++ b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/GrpcMetricsServiceV2Stub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMetricsServiceV2Stub extends MetricsServiceV2Stub {
   private static final MethodDescriptor<ListLogMetricsRequest, ListLogMetricsResponse>
diff --git a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/LoggingServiceV2Stub.java b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/LoggingServiceV2Stub.java
index 5e2830d0e3e0..09084951ee4c 100644
--- a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/LoggingServiceV2Stub.java
+++ b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/LoggingServiceV2Stub.java
@@ -36,6 +36,7 @@
 import com.google.logging.v2.WriteLogEntriesResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LoggingServiceV2Stub implements BackgroundResource {
 
diff --git a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/LoggingServiceV2StubSettings.java b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/LoggingServiceV2StubSettings.java
index ff902eb301bc..4adba30cfdbc 100644
--- a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/LoggingServiceV2StubSettings.java
+++ b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/LoggingServiceV2StubSettings.java
@@ -75,6 +75,7 @@
 import java.util.Collection;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LoggingServiceV2StubSettings extends StubSettings<LoggingServiceV2StubSettings> {
diff --git a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/MetricsServiceV2Stub.java b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/MetricsServiceV2Stub.java
index f546d2c26860..afbfe7d34893 100644
--- a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/MetricsServiceV2Stub.java
+++ b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/MetricsServiceV2Stub.java
@@ -29,6 +29,7 @@
 import com.google.logging.v2.UpdateLogMetricRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MetricsServiceV2Stub implements BackgroundResource {
 
diff --git a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/MetricsServiceV2StubSettings.java b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/MetricsServiceV2StubSettings.java
index 4820ac4aeb6f..84009acad51e 100644
--- a/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/MetricsServiceV2StubSettings.java
+++ b/java-logging/google-cloud-logging/src/main/java/com/google/cloud/logging/v2/stub/MetricsServiceV2StubSettings.java
@@ -57,6 +57,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MetricsServiceV2StubSettings extends StubSettings<MetricsServiceV2StubSettings> {
diff --git a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/BillingAccountLocationName.java b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/BillingAccountLocationName.java
index 1a5aa5c8de05..178a8e99bf96 100644
--- a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/BillingAccountLocationName.java
+++ b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/BillingAccountLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BillingAccountLocationName implements ResourceName {
   private static final PathTemplate BILLING_ACCOUNT_LOCATION =
diff --git a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/BillingAccountName.java b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/BillingAccountName.java
index 681a8031f749..7a0fcf839421 100644
--- a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/BillingAccountName.java
+++ b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/BillingAccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BillingAccountName implements ResourceName {
   private static final PathTemplate BILLING_ACCOUNT =
diff --git a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/CmekSettingsName.java b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/CmekSettingsName.java
index dc03c46f57de..322d31849d48 100644
--- a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/CmekSettingsName.java
+++ b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/CmekSettingsName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CmekSettingsName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/FolderLocationName.java b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/FolderLocationName.java
index 4860a1eb4424..4676ef17d701 100644
--- a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/FolderLocationName.java
+++ b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/FolderLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderLocationName implements ResourceName {
   private static final PathTemplate FOLDER_LOCATION =
diff --git a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/FolderName.java b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/FolderName.java
index 2cb041189a60..ad975e6564ff 100644
--- a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/FolderName.java
+++ b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/FolderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderName implements ResourceName {
   private static final PathTemplate FOLDER =
diff --git a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LinkName.java b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LinkName.java
index cbf131ca4b39..ab07edb52275 100644
--- a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LinkName.java
+++ b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LinkName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LinkName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BUCKET_LINK =
diff --git a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LocationName.java b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LocationName.java
index 6f29f3fd7e21..e869cb57f633 100644
--- a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LocationName.java
+++ b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogBucketName.java b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogBucketName.java
index 640a055a1f09..d99362e3017c 100644
--- a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogBucketName.java
+++ b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogBucketName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LogBucketName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BUCKET =
diff --git a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogExclusionName.java b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogExclusionName.java
index 89de682b0dd6..cd76608933f8 100644
--- a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogExclusionName.java
+++ b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogExclusionName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LogExclusionName implements ResourceName {
   private static final PathTemplate PROJECT_EXCLUSION =
diff --git a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogMetricName.java b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogMetricName.java
index 019696eea596..4ed25f0ecaf5 100644
--- a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogMetricName.java
+++ b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogMetricName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LogMetricName implements ResourceName {
   private static final PathTemplate PROJECT_METRIC =
diff --git a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogName.java b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogName.java
index d98759efcd06..82c52e01b39f 100644
--- a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogName.java
+++ b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LogName implements ResourceName {
   private static final PathTemplate PROJECT_LOG =
diff --git a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogSinkName.java b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogSinkName.java
index 7e6959ac6df2..1013e78a94be 100644
--- a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogSinkName.java
+++ b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogSinkName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LogSinkName implements ResourceName {
   private static final PathTemplate PROJECT_SINK =
diff --git a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogViewName.java b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogViewName.java
index ddf118ff196b..3654b06beb3a 100644
--- a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogViewName.java
+++ b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogViewName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LogViewName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BUCKET_VIEW =
diff --git a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/OrganizationLocationName.java b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/OrganizationLocationName.java
index a747d117eceb..63390df42c17 100644
--- a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/OrganizationLocationName.java
+++ b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/OrganizationLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationLocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/OrganizationName.java b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/OrganizationName.java
index 44d1cb28d139..d90f4ff73657 100644
--- a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/OrganizationName.java
+++ b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/ProjectName.java b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/ProjectName.java
index aa708f472427..2cc797351ff5 100644
--- a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/ProjectName.java
+++ b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/SettingsName.java b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/SettingsName.java
index 388e29d871c3..c3cbf592dab3 100644
--- a/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/SettingsName.java
+++ b/java-logging/proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/SettingsName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SettingsName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/LustreClient.java b/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/LustreClient.java
index 57e68f8d74fc..5e86516dd6be 100644
--- a/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/LustreClient.java
+++ b/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/LustreClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -287,6 +288,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LustreClient implements BackgroundResource {
   private final LustreSettings settings;
diff --git a/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/LustreSettings.java b/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/LustreSettings.java
index 3a4bd9e10a51..d7a5174b7209 100644
--- a/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/LustreSettings.java
+++ b/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/LustreSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LustreSettings extends ClientSettings<LustreSettings> {
 
diff --git a/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/GrpcLustreCallableFactory.java b/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/GrpcLustreCallableFactory.java
index 246d0b617440..75f50381f045 100644
--- a/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/GrpcLustreCallableFactory.java
+++ b/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/GrpcLustreCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLustreCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/GrpcLustreStub.java b/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/GrpcLustreStub.java
index 4122879d97cb..00610c58a993 100644
--- a/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/GrpcLustreStub.java
+++ b/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/GrpcLustreStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLustreStub extends LustreStub {
   private static final MethodDescriptor<ListInstancesRequest, ListInstancesResponse>
diff --git a/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/HttpJsonLustreCallableFactory.java b/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/HttpJsonLustreCallableFactory.java
index 45cd36090d4f..a872c79ffdaa 100644
--- a/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/HttpJsonLustreCallableFactory.java
+++ b/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/HttpJsonLustreCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLustreCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/HttpJsonLustreStub.java b/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/HttpJsonLustreStub.java
index d6f9b3d990f2..651a505dc46f 100644
--- a/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/HttpJsonLustreStub.java
+++ b/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/HttpJsonLustreStub.java
@@ -64,6 +64,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLustreStub extends LustreStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/LustreStub.java b/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/LustreStub.java
index 8843d029fbcb..ac6feb05173e 100644
--- a/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/LustreStub.java
+++ b/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/LustreStub.java
@@ -44,6 +44,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LustreStub implements BackgroundResource {
 
diff --git a/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/LustreStubSettings.java b/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/LustreStubSettings.java
index 18868f48ca06..8d9a6d347c9c 100644
--- a/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/LustreStubSettings.java
+++ b/java-lustre/google-cloud-lustre/src/main/java/com/google/cloud/lustre/v1/stub/LustreStubSettings.java
@@ -78,6 +78,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LustreStubSettings extends StubSettings<LustreStubSettings> {
diff --git a/java-lustre/proto-google-cloud-lustre-v1/src/main/java/com/google/cloud/lustre/v1/InstanceName.java b/java-lustre/proto-google-cloud-lustre-v1/src/main/java/com/google/cloud/lustre/v1/InstanceName.java
index 2d25628ab53f..484ef1205a63 100644
--- a/java-lustre/proto-google-cloud-lustre-v1/src/main/java/com/google/cloud/lustre/v1/InstanceName.java
+++ b/java-lustre/proto-google-cloud-lustre-v1/src/main/java/com/google/cloud/lustre/v1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-lustre/proto-google-cloud-lustre-v1/src/main/java/com/google/cloud/lustre/v1/LocationName.java b/java-lustre/proto-google-cloud-lustre-v1/src/main/java/com/google/cloud/lustre/v1/LocationName.java
index 8bd7e669738d..0728a414cb4c 100644
--- a/java-lustre/proto-google-cloud-lustre-v1/src/main/java/com/google/cloud/lustre/v1/LocationName.java
+++ b/java-lustre/proto-google-cloud-lustre-v1/src/main/java/com/google/cloud/lustre/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-lustre/proto-google-cloud-lustre-v1/src/main/java/com/google/cloud/lustre/v1/ServiceAccountName.java b/java-lustre/proto-google-cloud-lustre-v1/src/main/java/com/google/cloud/lustre/v1/ServiceAccountName.java
index 90e41855a251..3cce4c5afeed 100644
--- a/java-lustre/proto-google-cloud-lustre-v1/src/main/java/com/google/cloud/lustre/v1/ServiceAccountName.java
+++ b/java-lustre/proto-google-cloud-lustre-v1/src/main/java/com/google/cloud/lustre/v1/ServiceAccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceAccountName implements ResourceName {
   private static final PathTemplate PROJECT_SERVICE_ACCOUNT =
diff --git a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/MaintenanceClient.java b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/MaintenanceClient.java
index 43b493d9f388..0925f16504a0 100644
--- a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/MaintenanceClient.java
+++ b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/MaintenanceClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -208,6 +209,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MaintenanceClient implements BackgroundResource {
   private final MaintenanceSettings settings;
diff --git a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/MaintenanceSettings.java b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/MaintenanceSettings.java
index d3456e4d1f54..b1932c17d4f8 100644
--- a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/MaintenanceSettings.java
+++ b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/MaintenanceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MaintenanceSettings extends ClientSettings<MaintenanceSettings> {
 
diff --git a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/GrpcMaintenanceCallableFactory.java b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/GrpcMaintenanceCallableFactory.java
index 76cc9e999976..b8431c3335c1 100644
--- a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/GrpcMaintenanceCallableFactory.java
+++ b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/GrpcMaintenanceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMaintenanceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/GrpcMaintenanceStub.java b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/GrpcMaintenanceStub.java
index d46fb66d9516..c76cb8bcf680 100644
--- a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/GrpcMaintenanceStub.java
+++ b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/GrpcMaintenanceStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMaintenanceStub extends MaintenanceStub {
   private static final MethodDescriptor<SummarizeMaintenancesRequest, SummarizeMaintenancesResponse>
diff --git a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/HttpJsonMaintenanceCallableFactory.java b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/HttpJsonMaintenanceCallableFactory.java
index ed99af44fe72..0abf7f859924 100644
--- a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/HttpJsonMaintenanceCallableFactory.java
+++ b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/HttpJsonMaintenanceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMaintenanceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/HttpJsonMaintenanceStub.java b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/HttpJsonMaintenanceStub.java
index 46d0d78ab277..2bed6ad77e7c 100644
--- a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/HttpJsonMaintenanceStub.java
+++ b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/HttpJsonMaintenanceStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMaintenanceStub extends MaintenanceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/MaintenanceStub.java b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/MaintenanceStub.java
index 0d6ac2748da7..e8f72d43b7d8 100644
--- a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/MaintenanceStub.java
+++ b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/MaintenanceStub.java
@@ -33,6 +33,7 @@
 import com.google.cloud.maintenance.api.v1.SummarizeMaintenancesRequest;
 import com.google.cloud.maintenance.api.v1.SummarizeMaintenancesResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MaintenanceStub implements BackgroundResource {
 
diff --git a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/MaintenanceStubSettings.java b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/MaintenanceStubSettings.java
index 1ad2c9d0ea9d..10b6b86e9a84 100644
--- a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/MaintenanceStubSettings.java
+++ b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1/stub/MaintenanceStubSettings.java
@@ -65,6 +65,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MaintenanceStubSettings extends StubSettings<MaintenanceStubSettings> {
diff --git a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/MaintenanceClient.java b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/MaintenanceClient.java
index 49a1073180fb..2a28578e70dd 100644
--- a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/MaintenanceClient.java
+++ b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/MaintenanceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -209,6 +210,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MaintenanceClient implements BackgroundResource {
diff --git a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/MaintenanceSettings.java b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/MaintenanceSettings.java
index b06fc3d8e2b5..70b248ecaa17 100644
--- a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/MaintenanceSettings.java
+++ b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/MaintenanceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MaintenanceSettings extends ClientSettings<MaintenanceSettings> {
diff --git a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/GrpcMaintenanceCallableFactory.java b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/GrpcMaintenanceCallableFactory.java
index a856e6b2cf97..68e53e07f4f7 100644
--- a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/GrpcMaintenanceCallableFactory.java
+++ b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/GrpcMaintenanceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMaintenanceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/GrpcMaintenanceStub.java b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/GrpcMaintenanceStub.java
index 303b7f914c34..67c90bec5abc 100644
--- a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/GrpcMaintenanceStub.java
+++ b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/GrpcMaintenanceStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMaintenanceStub extends MaintenanceStub {
diff --git a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/HttpJsonMaintenanceCallableFactory.java b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/HttpJsonMaintenanceCallableFactory.java
index 03e44966c952..cdea346bd0ca 100644
--- a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/HttpJsonMaintenanceCallableFactory.java
+++ b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/HttpJsonMaintenanceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMaintenanceCallableFactory
diff --git a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/HttpJsonMaintenanceStub.java b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/HttpJsonMaintenanceStub.java
index aa56a8dacacd..e04391bf68e1 100644
--- a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/HttpJsonMaintenanceStub.java
+++ b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/HttpJsonMaintenanceStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMaintenanceStub extends MaintenanceStub {
diff --git a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/MaintenanceStub.java b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/MaintenanceStub.java
index 721e2d4fa26a..73c133e9566e 100644
--- a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/MaintenanceStub.java
+++ b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/MaintenanceStub.java
@@ -34,6 +34,7 @@
 import com.google.cloud.maintenance.api.v1beta.SummarizeMaintenancesRequest;
 import com.google.cloud.maintenance.api.v1beta.SummarizeMaintenancesResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class MaintenanceStub implements BackgroundResource {
diff --git a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/MaintenanceStubSettings.java b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/MaintenanceStubSettings.java
index 3e64b62e3c5a..dab8e3147afd 100644
--- a/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/MaintenanceStubSettings.java
+++ b/java-maintenance/google-cloud-maintenance/src/main/java/com/google/cloud/maintenance/api/v1beta/stub/MaintenanceStubSettings.java
@@ -65,6 +65,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-maintenance/proto-google-cloud-maintenance-v1/src/main/java/com/google/cloud/maintenance/api/v1/LocationName.java b/java-maintenance/proto-google-cloud-maintenance-v1/src/main/java/com/google/cloud/maintenance/api/v1/LocationName.java
index 108cc74ba8a6..e3b4cde7c49e 100644
--- a/java-maintenance/proto-google-cloud-maintenance-v1/src/main/java/com/google/cloud/maintenance/api/v1/LocationName.java
+++ b/java-maintenance/proto-google-cloud-maintenance-v1/src/main/java/com/google/cloud/maintenance/api/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-maintenance/proto-google-cloud-maintenance-v1/src/main/java/com/google/cloud/maintenance/api/v1/ResourceMaintenanceName.java b/java-maintenance/proto-google-cloud-maintenance-v1/src/main/java/com/google/cloud/maintenance/api/v1/ResourceMaintenanceName.java
index a5740f2c8494..0a82530247b5 100644
--- a/java-maintenance/proto-google-cloud-maintenance-v1/src/main/java/com/google/cloud/maintenance/api/v1/ResourceMaintenanceName.java
+++ b/java-maintenance/proto-google-cloud-maintenance-v1/src/main/java/com/google/cloud/maintenance/api/v1/ResourceMaintenanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ResourceMaintenanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RESOURCE_MAINTENANCE =
diff --git a/java-maintenance/proto-google-cloud-maintenance-v1beta/src/main/java/com/google/cloud/maintenance/api/v1beta/LocationName.java b/java-maintenance/proto-google-cloud-maintenance-v1beta/src/main/java/com/google/cloud/maintenance/api/v1beta/LocationName.java
index e1cf68372f3c..9d792a8296a4 100644
--- a/java-maintenance/proto-google-cloud-maintenance-v1beta/src/main/java/com/google/cloud/maintenance/api/v1beta/LocationName.java
+++ b/java-maintenance/proto-google-cloud-maintenance-v1beta/src/main/java/com/google/cloud/maintenance/api/v1beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-maintenance/proto-google-cloud-maintenance-v1beta/src/main/java/com/google/cloud/maintenance/api/v1beta/ResourceMaintenanceName.java b/java-maintenance/proto-google-cloud-maintenance-v1beta/src/main/java/com/google/cloud/maintenance/api/v1beta/ResourceMaintenanceName.java
index 5779f0a8525a..8a2af5e0dea5 100644
--- a/java-maintenance/proto-google-cloud-maintenance-v1beta/src/main/java/com/google/cloud/maintenance/api/v1beta/ResourceMaintenanceName.java
+++ b/java-maintenance/proto-google-cloud-maintenance-v1beta/src/main/java/com/google/cloud/maintenance/api/v1beta/ResourceMaintenanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ResourceMaintenanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RESOURCE_MAINTENANCE =
diff --git a/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/ManagedIdentitiesServiceClient.java b/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/ManagedIdentitiesServiceClient.java
index abcc32f2fecb..42dc828ed587 100644
--- a/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/ManagedIdentitiesServiceClient.java
+++ b/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/ManagedIdentitiesServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -337,6 +338,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ManagedIdentitiesServiceClient implements BackgroundResource {
   private final ManagedIdentitiesServiceSettings settings;
diff --git a/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/ManagedIdentitiesServiceSettings.java b/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/ManagedIdentitiesServiceSettings.java
index b8add9bd3095..bad025664efc 100644
--- a/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/ManagedIdentitiesServiceSettings.java
+++ b/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/ManagedIdentitiesServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ManagedIdentitiesServiceSettings
     extends ClientSettings<ManagedIdentitiesServiceSettings> {
diff --git a/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/stub/GrpcManagedIdentitiesServiceCallableFactory.java b/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/stub/GrpcManagedIdentitiesServiceCallableFactory.java
index fb86f59b10b1..0ce965230c66 100644
--- a/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/stub/GrpcManagedIdentitiesServiceCallableFactory.java
+++ b/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/stub/GrpcManagedIdentitiesServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcManagedIdentitiesServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/stub/GrpcManagedIdentitiesServiceStub.java b/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/stub/GrpcManagedIdentitiesServiceStub.java
index 0b677f522db0..d3d0226b6bf7 100644
--- a/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/stub/GrpcManagedIdentitiesServiceStub.java
+++ b/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/stub/GrpcManagedIdentitiesServiceStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcManagedIdentitiesServiceStub extends ManagedIdentitiesServiceStub {
   private static final MethodDescriptor<CreateMicrosoftAdDomainRequest, Operation>
diff --git a/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/stub/ManagedIdentitiesServiceStub.java b/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/stub/ManagedIdentitiesServiceStub.java
index 3d45225cd912..9a4d823bd520 100644
--- a/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/stub/ManagedIdentitiesServiceStub.java
+++ b/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/stub/ManagedIdentitiesServiceStub.java
@@ -39,6 +39,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ManagedIdentitiesServiceStub implements BackgroundResource {
 
diff --git a/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/stub/ManagedIdentitiesServiceStubSettings.java b/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/stub/ManagedIdentitiesServiceStubSettings.java
index 2e6a89e9676d..afc15354215f 100644
--- a/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/stub/ManagedIdentitiesServiceStubSettings.java
+++ b/java-managed-identities/google-cloud-managed-identities/src/main/java/com/google/cloud/managedidentities/v1/stub/ManagedIdentitiesServiceStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ManagedIdentitiesServiceStubSettings
diff --git a/java-managed-identities/proto-google-cloud-managed-identities-v1/src/main/java/com/google/cloud/managedidentities/v1/DomainName.java b/java-managed-identities/proto-google-cloud-managed-identities-v1/src/main/java/com/google/cloud/managedidentities/v1/DomainName.java
index 12ae28f41ec5..8d81e6a7c90d 100644
--- a/java-managed-identities/proto-google-cloud-managed-identities-v1/src/main/java/com/google/cloud/managedidentities/v1/DomainName.java
+++ b/java-managed-identities/proto-google-cloud-managed-identities-v1/src/main/java/com/google/cloud/managedidentities/v1/DomainName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DomainName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DOMAIN =
diff --git a/java-managed-identities/proto-google-cloud-managed-identities-v1/src/main/java/com/google/cloud/managedidentities/v1/LocationName.java b/java-managed-identities/proto-google-cloud-managed-identities-v1/src/main/java/com/google/cloud/managedidentities/v1/LocationName.java
index b4ab05278685..dc4118a9040a 100644
--- a/java-managed-identities/proto-google-cloud-managed-identities-v1/src/main/java/com/google/cloud/managedidentities/v1/LocationName.java
+++ b/java-managed-identities/proto-google-cloud-managed-identities-v1/src/main/java/com/google/cloud/managedidentities/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/ManagedKafkaClient.java b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/ManagedKafkaClient.java
index a39edb9f8355..07d928f58390 100644
--- a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/ManagedKafkaClient.java
+++ b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/ManagedKafkaClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -558,6 +559,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ManagedKafkaClient implements BackgroundResource {
   private final ManagedKafkaSettings settings;
diff --git a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/ManagedKafkaConnectClient.java b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/ManagedKafkaConnectClient.java
index eee083f05311..e52d82b0dffb 100644
--- a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/ManagedKafkaConnectClient.java
+++ b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/ManagedKafkaConnectClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -431,6 +432,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ManagedKafkaConnectClient implements BackgroundResource {
   private final ManagedKafkaConnectSettings settings;
diff --git a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/ManagedKafkaConnectSettings.java b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/ManagedKafkaConnectSettings.java
index 1279e6fafafa..b8628a625160 100644
--- a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/ManagedKafkaConnectSettings.java
+++ b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/ManagedKafkaConnectSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ManagedKafkaConnectSettings extends ClientSettings<ManagedKafkaConnectSettings> {
 
diff --git a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/ManagedKafkaSettings.java b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/ManagedKafkaSettings.java
index 41518fe4cdca..a06a52de3f46 100644
--- a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/ManagedKafkaSettings.java
+++ b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/ManagedKafkaSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ManagedKafkaSettings extends ClientSettings<ManagedKafkaSettings> {
 
diff --git a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/GrpcManagedKafkaCallableFactory.java b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/GrpcManagedKafkaCallableFactory.java
index 54953b6e7e3a..3f7b762c6ebd 100644
--- a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/GrpcManagedKafkaCallableFactory.java
+++ b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/GrpcManagedKafkaCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcManagedKafkaCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/GrpcManagedKafkaConnectCallableFactory.java b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/GrpcManagedKafkaConnectCallableFactory.java
index 4703437e3036..6c7f3ea73264 100644
--- a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/GrpcManagedKafkaConnectCallableFactory.java
+++ b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/GrpcManagedKafkaConnectCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcManagedKafkaConnectCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/GrpcManagedKafkaConnectStub.java b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/GrpcManagedKafkaConnectStub.java
index 6854632811d1..e3247d47d604 100644
--- a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/GrpcManagedKafkaConnectStub.java
+++ b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/GrpcManagedKafkaConnectStub.java
@@ -63,6 +63,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcManagedKafkaConnectStub extends ManagedKafkaConnectStub {
   private static final MethodDescriptor<ListConnectClustersRequest, ListConnectClustersResponse>
diff --git a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/GrpcManagedKafkaStub.java b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/GrpcManagedKafkaStub.java
index a760a1541ffa..1c8bb7141699 100644
--- a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/GrpcManagedKafkaStub.java
+++ b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/GrpcManagedKafkaStub.java
@@ -74,6 +74,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcManagedKafkaStub extends ManagedKafkaStub {
   private static final MethodDescriptor<ListClustersRequest, ListClustersResponse>
diff --git a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/HttpJsonManagedKafkaCallableFactory.java b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/HttpJsonManagedKafkaCallableFactory.java
index 003f01d8a1f7..efbe4938f0fa 100644
--- a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/HttpJsonManagedKafkaCallableFactory.java
+++ b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/HttpJsonManagedKafkaCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonManagedKafkaCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/HttpJsonManagedKafkaConnectCallableFactory.java b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/HttpJsonManagedKafkaConnectCallableFactory.java
index 6ed5ac97c592..828af4cc81b6 100644
--- a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/HttpJsonManagedKafkaConnectCallableFactory.java
+++ b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/HttpJsonManagedKafkaConnectCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonManagedKafkaConnectCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/HttpJsonManagedKafkaConnectStub.java b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/HttpJsonManagedKafkaConnectStub.java
index 4f1e7308a8d3..d83290ecb3f0 100644
--- a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/HttpJsonManagedKafkaConnectStub.java
+++ b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/HttpJsonManagedKafkaConnectStub.java
@@ -74,6 +74,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonManagedKafkaConnectStub extends ManagedKafkaConnectStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/HttpJsonManagedKafkaStub.java b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/HttpJsonManagedKafkaStub.java
index c8160e62a39b..e0d14f79e074 100644
--- a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/HttpJsonManagedKafkaStub.java
+++ b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/HttpJsonManagedKafkaStub.java
@@ -85,6 +85,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonManagedKafkaStub extends ManagedKafkaStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/ManagedKafkaConnectStub.java b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/ManagedKafkaConnectStub.java
index 36f459ac8a54..168640e3156d 100644
--- a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/ManagedKafkaConnectStub.java
+++ b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/ManagedKafkaConnectStub.java
@@ -54,6 +54,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ManagedKafkaConnectStub implements BackgroundResource {
 
diff --git a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/ManagedKafkaConnectStubSettings.java b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/ManagedKafkaConnectStubSettings.java
index 2a89a5a2904d..81d8c8dad15c 100644
--- a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/ManagedKafkaConnectStubSettings.java
+++ b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/ManagedKafkaConnectStubSettings.java
@@ -88,6 +88,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -166,6 +167,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ManagedKafkaConnectStubSettings extends StubSettings<ManagedKafkaConnectStubSettings> {
diff --git a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/ManagedKafkaStub.java b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/ManagedKafkaStub.java
index 3fdfd091b6b9..953b2a2ae20a 100644
--- a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/ManagedKafkaStub.java
+++ b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/ManagedKafkaStub.java
@@ -65,6 +65,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ManagedKafkaStub implements BackgroundResource {
 
diff --git a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/ManagedKafkaStubSettings.java b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/ManagedKafkaStubSettings.java
index 1c7bf506b607..dc65414f22ea 100644
--- a/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/ManagedKafkaStubSettings.java
+++ b/java-managedkafka/google-cloud-managedkafka/src/main/java/com/google/cloud/managedkafka/v1/stub/ManagedKafkaStubSettings.java
@@ -99,6 +99,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -176,6 +177,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ManagedKafkaStubSettings extends StubSettings<ManagedKafkaStubSettings> {
diff --git a/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/AclName.java b/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/AclName.java
index 55a32402b4fd..2ee840a23ebf 100644
--- a/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/AclName.java
+++ b/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/AclName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AclName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER_ACL =
diff --git a/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/ClusterName.java b/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/ClusterName.java
index 96efc67ad66e..6c78cd0da925 100644
--- a/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/ClusterName.java
+++ b/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/ClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER =
diff --git a/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/ConnectClusterName.java b/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/ConnectClusterName.java
index a3cc262e7aef..d687493323e3 100644
--- a/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/ConnectClusterName.java
+++ b/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/ConnectClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConnectClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONNECT_CLUSTER =
diff --git a/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/ConnectorName.java b/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/ConnectorName.java
index 46999dc084fd..3afc9640cc71 100644
--- a/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/ConnectorName.java
+++ b/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/ConnectorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConnectorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONNECT_CLUSTER_CONNECTOR =
diff --git a/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/ConsumerGroupName.java b/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/ConsumerGroupName.java
index f8424ae7b4e6..6c7128f980c2 100644
--- a/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/ConsumerGroupName.java
+++ b/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/ConsumerGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConsumerGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER_CONSUMER_GROUP =
diff --git a/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/LocationName.java b/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/LocationName.java
index 85a6163349c5..f4d5aac7676a 100644
--- a/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/LocationName.java
+++ b/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/TopicName.java b/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/TopicName.java
index 84dd32c7ef0a..81c4c97cfb63 100644
--- a/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/TopicName.java
+++ b/java-managedkafka/proto-google-cloud-managedkafka-v1/src/main/java/com/google/cloud/managedkafka/v1/TopicName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TopicName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER_TOPIC =
diff --git a/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/AddressValidationClient.java b/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/AddressValidationClient.java
index 52c3e73f1129..4cf4c41c5bb5 100644
--- a/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/AddressValidationClient.java
+++ b/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/AddressValidationClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AddressValidationClient implements BackgroundResource {
   private final AddressValidationSettings settings;
diff --git a/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/AddressValidationSettings.java b/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/AddressValidationSettings.java
index d24544ff45a9..e2b47f65c7a6 100644
--- a/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/AddressValidationSettings.java
+++ b/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/AddressValidationSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AddressValidationSettings extends ClientSettings<AddressValidationSettings> {
 
diff --git a/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/AddressValidationStub.java b/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/AddressValidationStub.java
index cfd8ecfd938c..e52d099effec 100644
--- a/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/AddressValidationStub.java
+++ b/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/AddressValidationStub.java
@@ -23,6 +23,7 @@
 import com.google.maps.addressvalidation.v1.ValidateAddressRequest;
 import com.google.maps.addressvalidation.v1.ValidateAddressResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AddressValidationStub implements BackgroundResource {
 
diff --git a/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/AddressValidationStubSettings.java b/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/AddressValidationStubSettings.java
index 3c0cf48b31a2..14a94aac872a 100644
--- a/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/AddressValidationStubSettings.java
+++ b/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/AddressValidationStubSettings.java
@@ -48,6 +48,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AddressValidationStubSettings extends StubSettings<AddressValidationStubSettings> {
diff --git a/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/GrpcAddressValidationCallableFactory.java b/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/GrpcAddressValidationCallableFactory.java
index f136eb3e2252..6cc02ea4e3f1 100644
--- a/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/GrpcAddressValidationCallableFactory.java
+++ b/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/GrpcAddressValidationCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAddressValidationCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/GrpcAddressValidationStub.java b/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/GrpcAddressValidationStub.java
index b99db31128df..a3b0e0aa1bea 100644
--- a/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/GrpcAddressValidationStub.java
+++ b/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/GrpcAddressValidationStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAddressValidationStub extends AddressValidationStub {
   private static final MethodDescriptor<ValidateAddressRequest, ValidateAddressResponse>
diff --git a/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/HttpJsonAddressValidationCallableFactory.java b/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/HttpJsonAddressValidationCallableFactory.java
index 4fa28cedfb18..6ea43d56ec50 100644
--- a/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/HttpJsonAddressValidationCallableFactory.java
+++ b/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/HttpJsonAddressValidationCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAddressValidationCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/HttpJsonAddressValidationStub.java b/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/HttpJsonAddressValidationStub.java
index f868c49d06cc..f8c0a69d4706 100644
--- a/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/HttpJsonAddressValidationStub.java
+++ b/java-maps-addressvalidation/google-maps-addressvalidation/src/main/java/com/google/maps/addressvalidation/v1/stub/HttpJsonAddressValidationStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAddressValidationStub extends AddressValidationStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/AreaInsightsClient.java b/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/AreaInsightsClient.java
index 2e8e4503e2ab..a497d6317557 100644
--- a/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/AreaInsightsClient.java
+++ b/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/AreaInsightsClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AreaInsightsClient implements BackgroundResource {
   private final AreaInsightsSettings settings;
diff --git a/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/AreaInsightsSettings.java b/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/AreaInsightsSettings.java
index c9e281b70685..956efd0e8743 100644
--- a/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/AreaInsightsSettings.java
+++ b/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/AreaInsightsSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AreaInsightsSettings extends ClientSettings<AreaInsightsSettings> {
 
diff --git a/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/AreaInsightsStub.java b/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/AreaInsightsStub.java
index f684f77f149f..dc06e85efe54 100644
--- a/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/AreaInsightsStub.java
+++ b/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/AreaInsightsStub.java
@@ -21,6 +21,7 @@
 import com.google.maps.areainsights.v1.ComputeInsightsRequest;
 import com.google.maps.areainsights.v1.ComputeInsightsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AreaInsightsStub implements BackgroundResource {
 
diff --git a/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/AreaInsightsStubSettings.java b/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/AreaInsightsStubSettings.java
index 1e1f5471e009..2432c758d737 100644
--- a/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/AreaInsightsStubSettings.java
+++ b/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/AreaInsightsStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AreaInsightsStubSettings extends StubSettings<AreaInsightsStubSettings> {
diff --git a/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/GrpcAreaInsightsCallableFactory.java b/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/GrpcAreaInsightsCallableFactory.java
index f05e36d48ed0..d61d93e558f4 100644
--- a/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/GrpcAreaInsightsCallableFactory.java
+++ b/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/GrpcAreaInsightsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAreaInsightsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/GrpcAreaInsightsStub.java b/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/GrpcAreaInsightsStub.java
index 67c4bfcbe0a3..49bae51fd9fd 100644
--- a/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/GrpcAreaInsightsStub.java
+++ b/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/GrpcAreaInsightsStub.java
@@ -30,6 +30,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAreaInsightsStub extends AreaInsightsStub {
   private static final MethodDescriptor<ComputeInsightsRequest, ComputeInsightsResponse>
diff --git a/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/HttpJsonAreaInsightsCallableFactory.java b/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/HttpJsonAreaInsightsCallableFactory.java
index 4aeab5ae9aba..1129aa8b6cb7 100644
--- a/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/HttpJsonAreaInsightsCallableFactory.java
+++ b/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/HttpJsonAreaInsightsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAreaInsightsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/HttpJsonAreaInsightsStub.java b/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/HttpJsonAreaInsightsStub.java
index d02d0397e938..87063cc7de4c 100644
--- a/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/HttpJsonAreaInsightsStub.java
+++ b/java-maps-area-insights/google-maps-area-insights/src/main/java/com/google/maps/areainsights/v1/stub/HttpJsonAreaInsightsStub.java
@@ -37,6 +37,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAreaInsightsStub extends AreaInsightsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/DeliveryServiceClient.java b/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/DeliveryServiceClient.java
index 5ac8577b91af..82b0520ac0da 100644
--- a/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/DeliveryServiceClient.java
+++ b/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/DeliveryServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -348,6 +349,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeliveryServiceClient implements BackgroundResource {
   private final DeliveryServiceSettings settings;
diff --git a/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/DeliveryServiceSettings.java b/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/DeliveryServiceSettings.java
index ee0541206615..d3449fa1ee99 100644
--- a/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/DeliveryServiceSettings.java
+++ b/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/DeliveryServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeliveryServiceSettings extends ClientSettings<DeliveryServiceSettings> {
 
diff --git a/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/DeliveryServiceStub.java b/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/DeliveryServiceStub.java
index 2d9e428687fe..855083b3d777 100644
--- a/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/DeliveryServiceStub.java
+++ b/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/DeliveryServiceStub.java
@@ -41,6 +41,7 @@
 import com.google.maps.fleetengine.delivery.v1.UpdateTaskRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DeliveryServiceStub implements BackgroundResource {
 
diff --git a/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/DeliveryServiceStubSettings.java b/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/DeliveryServiceStubSettings.java
index e5e2b408cc49..9bc87ad72aad 100644
--- a/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/DeliveryServiceStubSettings.java
+++ b/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/DeliveryServiceStubSettings.java
@@ -73,6 +73,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DeliveryServiceStubSettings extends StubSettings<DeliveryServiceStubSettings> {
diff --git a/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/GrpcDeliveryServiceCallableFactory.java b/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/GrpcDeliveryServiceCallableFactory.java
index db3785c15322..9ab18ffc0772 100644
--- a/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/GrpcDeliveryServiceCallableFactory.java
+++ b/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/GrpcDeliveryServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDeliveryServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/GrpcDeliveryServiceStub.java b/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/GrpcDeliveryServiceStub.java
index 1d520d635a36..a8daa36db4da 100644
--- a/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/GrpcDeliveryServiceStub.java
+++ b/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/GrpcDeliveryServiceStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDeliveryServiceStub extends DeliveryServiceStub {
   private static final MethodDescriptor<CreateDeliveryVehicleRequest, DeliveryVehicle>
diff --git a/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/HttpJsonDeliveryServiceCallableFactory.java b/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/HttpJsonDeliveryServiceCallableFactory.java
index 9ae1f8675e51..ae75d23e6761 100644
--- a/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/HttpJsonDeliveryServiceCallableFactory.java
+++ b/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/HttpJsonDeliveryServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeliveryServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/HttpJsonDeliveryServiceStub.java b/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/HttpJsonDeliveryServiceStub.java
index 838481809fe8..9246fc8c45ca 100644
--- a/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/HttpJsonDeliveryServiceStub.java
+++ b/java-maps-fleetengine-delivery/google-maps-fleetengine-delivery/src/main/java/com/google/maps/fleetengine/delivery/v1/stub/HttpJsonDeliveryServiceStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeliveryServiceStub extends DeliveryServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-maps-fleetengine-delivery/proto-google-maps-fleetengine-delivery-v1/src/main/java/com/google/maps/fleetengine/delivery/v1/DeliveryVehicleName.java b/java-maps-fleetengine-delivery/proto-google-maps-fleetengine-delivery-v1/src/main/java/com/google/maps/fleetengine/delivery/v1/DeliveryVehicleName.java
index 06677409c8cc..fdb382ab2fee 100644
--- a/java-maps-fleetengine-delivery/proto-google-maps-fleetengine-delivery-v1/src/main/java/com/google/maps/fleetengine/delivery/v1/DeliveryVehicleName.java
+++ b/java-maps-fleetengine-delivery/proto-google-maps-fleetengine-delivery-v1/src/main/java/com/google/maps/fleetengine/delivery/v1/DeliveryVehicleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeliveryVehicleName implements ResourceName {
   private static final PathTemplate PROVIDER_VEHICLE =
diff --git a/java-maps-fleetengine-delivery/proto-google-maps-fleetengine-delivery-v1/src/main/java/com/google/maps/fleetengine/delivery/v1/ProviderName.java b/java-maps-fleetengine-delivery/proto-google-maps-fleetengine-delivery-v1/src/main/java/com/google/maps/fleetengine/delivery/v1/ProviderName.java
index dd600759a47b..f8338a86a16c 100644
--- a/java-maps-fleetengine-delivery/proto-google-maps-fleetengine-delivery-v1/src/main/java/com/google/maps/fleetengine/delivery/v1/ProviderName.java
+++ b/java-maps-fleetengine-delivery/proto-google-maps-fleetengine-delivery-v1/src/main/java/com/google/maps/fleetengine/delivery/v1/ProviderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProviderName implements ResourceName {
   private static final PathTemplate PROVIDER =
diff --git a/java-maps-fleetengine-delivery/proto-google-maps-fleetengine-delivery-v1/src/main/java/com/google/maps/fleetengine/delivery/v1/TaskName.java b/java-maps-fleetengine-delivery/proto-google-maps-fleetengine-delivery-v1/src/main/java/com/google/maps/fleetengine/delivery/v1/TaskName.java
index 25e00ac37353..705e9635092e 100644
--- a/java-maps-fleetengine-delivery/proto-google-maps-fleetengine-delivery-v1/src/main/java/com/google/maps/fleetengine/delivery/v1/TaskName.java
+++ b/java-maps-fleetengine-delivery/proto-google-maps-fleetengine-delivery-v1/src/main/java/com/google/maps/fleetengine/delivery/v1/TaskName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TaskName implements ResourceName {
   private static final PathTemplate PROVIDER_TASK =
diff --git a/java-maps-fleetengine-delivery/proto-google-maps-fleetengine-delivery-v1/src/main/java/com/google/maps/fleetengine/delivery/v1/TaskTrackingInfoName.java b/java-maps-fleetengine-delivery/proto-google-maps-fleetengine-delivery-v1/src/main/java/com/google/maps/fleetengine/delivery/v1/TaskTrackingInfoName.java
index 1addc0036669..f21656a56011 100644
--- a/java-maps-fleetengine-delivery/proto-google-maps-fleetengine-delivery-v1/src/main/java/com/google/maps/fleetengine/delivery/v1/TaskTrackingInfoName.java
+++ b/java-maps-fleetengine-delivery/proto-google-maps-fleetengine-delivery-v1/src/main/java/com/google/maps/fleetengine/delivery/v1/TaskTrackingInfoName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TaskTrackingInfoName implements ResourceName {
   private static final PathTemplate PROVIDER_TRACKING =
diff --git a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/TripServiceClient.java b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/TripServiceClient.java
index 4304d285d38e..1236fddc8372 100644
--- a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/TripServiceClient.java
+++ b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/TripServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -200,6 +201,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TripServiceClient implements BackgroundResource {
   private final TripServiceSettings settings;
diff --git a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/TripServiceSettings.java b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/TripServiceSettings.java
index ec6b2c445eb1..b0768db34bfe 100644
--- a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/TripServiceSettings.java
+++ b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/TripServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TripServiceSettings extends ClientSettings<TripServiceSettings> {
 
diff --git a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/VehicleServiceClient.java b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/VehicleServiceClient.java
index 5ef5726a9486..adf30229235d 100644
--- a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/VehicleServiceClient.java
+++ b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/VehicleServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -248,6 +249,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VehicleServiceClient implements BackgroundResource {
   private final VehicleServiceSettings settings;
diff --git a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/VehicleServiceSettings.java b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/VehicleServiceSettings.java
index 738d05df2d56..0278982967b4 100644
--- a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/VehicleServiceSettings.java
+++ b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/VehicleServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VehicleServiceSettings extends ClientSettings<VehicleServiceSettings> {
 
diff --git a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/GrpcTripServiceCallableFactory.java b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/GrpcTripServiceCallableFactory.java
index f0d1142bce69..f828f044fb7f 100644
--- a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/GrpcTripServiceCallableFactory.java
+++ b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/GrpcTripServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTripServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/GrpcTripServiceStub.java b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/GrpcTripServiceStub.java
index 1fa50a9153c3..d8a9d3fc1505 100644
--- a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/GrpcTripServiceStub.java
+++ b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/GrpcTripServiceStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTripServiceStub extends TripServiceStub {
   private static final MethodDescriptor<CreateTripRequest, Trip> createTripMethodDescriptor =
diff --git a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/GrpcVehicleServiceCallableFactory.java b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/GrpcVehicleServiceCallableFactory.java
index 1880403d1bab..34a560033557 100644
--- a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/GrpcVehicleServiceCallableFactory.java
+++ b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/GrpcVehicleServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVehicleServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/GrpcVehicleServiceStub.java b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/GrpcVehicleServiceStub.java
index e31f92e7d255..2a6cd98c6ec7 100644
--- a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/GrpcVehicleServiceStub.java
+++ b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/GrpcVehicleServiceStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVehicleServiceStub extends VehicleServiceStub {
   private static final MethodDescriptor<CreateVehicleRequest, Vehicle>
diff --git a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/TripServiceStub.java b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/TripServiceStub.java
index cc10769b860f..f50bc21dde73 100644
--- a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/TripServiceStub.java
+++ b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/TripServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.maps.fleetengine.v1.UpdateTripRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TripServiceStub implements BackgroundResource {
 
diff --git a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/TripServiceStubSettings.java b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/TripServiceStubSettings.java
index 2879e45ce7ab..16a70b72c1e8 100644
--- a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/TripServiceStubSettings.java
+++ b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/TripServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TripServiceStubSettings extends StubSettings<TripServiceStubSettings> {
diff --git a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/VehicleServiceStub.java b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/VehicleServiceStub.java
index 92a5e7b134bd..acc0d72670fe 100644
--- a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/VehicleServiceStub.java
+++ b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/VehicleServiceStub.java
@@ -33,6 +33,7 @@
 import com.google.maps.fleetengine.v1.Vehicle;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class VehicleServiceStub implements BackgroundResource {
 
diff --git a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/VehicleServiceStubSettings.java b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/VehicleServiceStubSettings.java
index fe9fb1ab07d9..2c7c83e3a30f 100644
--- a/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/VehicleServiceStubSettings.java
+++ b/java-maps-fleetengine/google-maps-fleetengine/src/main/java/com/google/maps/fleetengine/v1/stub/VehicleServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class VehicleServiceStubSettings extends StubSettings<VehicleServiceStubSettings> {
diff --git a/java-maps-fleetengine/proto-google-maps-fleetengine-v1/src/main/java/com/google/maps/fleetengine/v1/TripName.java b/java-maps-fleetengine/proto-google-maps-fleetengine-v1/src/main/java/com/google/maps/fleetengine/v1/TripName.java
index aa7dd06e8a09..3f5241b41c40 100644
--- a/java-maps-fleetengine/proto-google-maps-fleetengine-v1/src/main/java/com/google/maps/fleetengine/v1/TripName.java
+++ b/java-maps-fleetengine/proto-google-maps-fleetengine-v1/src/main/java/com/google/maps/fleetengine/v1/TripName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TripName implements ResourceName {
   private static final PathTemplate PROVIDER_TRIP =
diff --git a/java-maps-fleetengine/proto-google-maps-fleetengine-v1/src/main/java/com/google/maps/fleetengine/v1/VehicleName.java b/java-maps-fleetengine/proto-google-maps-fleetengine-v1/src/main/java/com/google/maps/fleetengine/v1/VehicleName.java
index f8a1d159b194..9fb1d41bfa70 100644
--- a/java-maps-fleetengine/proto-google-maps-fleetengine-v1/src/main/java/com/google/maps/fleetengine/v1/VehicleName.java
+++ b/java-maps-fleetengine/proto-google-maps-fleetengine-v1/src/main/java/com/google/maps/fleetengine/v1/VehicleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VehicleName implements ResourceName {
   private static final PathTemplate PROVIDER_VEHICLE =
diff --git a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/DestinationServiceClient.java b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/DestinationServiceClient.java
index f8c0fa8d9046..f61e2e4d03e7 100644
--- a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/DestinationServiceClient.java
+++ b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/DestinationServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -135,6 +136,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DestinationServiceClient implements BackgroundResource {
   private final DestinationServiceSettings settings;
diff --git a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/DestinationServiceSettings.java b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/DestinationServiceSettings.java
index 0e0eb0d1c982..21d7b9ac3a4c 100644
--- a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/DestinationServiceSettings.java
+++ b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/DestinationServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DestinationServiceSettings extends ClientSettings<DestinationServiceSettings> {
 
diff --git a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/GeocodeServiceClient.java b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/GeocodeServiceClient.java
index b9ff7094115e..869c948b5f70 100644
--- a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/GeocodeServiceClient.java
+++ b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/GeocodeServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GeocodeServiceClient implements BackgroundResource {
   private final GeocodeServiceSettings settings;
diff --git a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/GeocodeServiceSettings.java b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/GeocodeServiceSettings.java
index e7ea63fdda73..a8b385f8291d 100644
--- a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/GeocodeServiceSettings.java
+++ b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/GeocodeServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GeocodeServiceSettings extends ClientSettings<GeocodeServiceSettings> {
 
diff --git a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/DestinationServiceStub.java b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/DestinationServiceStub.java
index 0af21e975da7..dbfeaa1b2ccf 100644
--- a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/DestinationServiceStub.java
+++ b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/DestinationServiceStub.java
@@ -21,6 +21,7 @@
 import com.google.maps.geocode.v4.SearchDestinationsRequest;
 import com.google.maps.geocode.v4.SearchDestinationsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DestinationServiceStub implements BackgroundResource {
 
diff --git a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/DestinationServiceStubSettings.java b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/DestinationServiceStubSettings.java
index dc03e8793772..9ab291b92a7f 100644
--- a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/DestinationServiceStubSettings.java
+++ b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/DestinationServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DestinationServiceStubSettings extends StubSettings<DestinationServiceStubSettings> {
diff --git a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GeocodeServiceStub.java b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GeocodeServiceStub.java
index 9aae1f9cdbd9..bd8847889038 100644
--- a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GeocodeServiceStub.java
+++ b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GeocodeServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.maps.geocode.v4.GeocodePlaceRequest;
 import com.google.maps.geocode.v4.GeocodeResult;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GeocodeServiceStub implements BackgroundResource {
 
diff --git a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GeocodeServiceStubSettings.java b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GeocodeServiceStubSettings.java
index 24a33383247e..4017fe9cc764 100644
--- a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GeocodeServiceStubSettings.java
+++ b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GeocodeServiceStubSettings.java
@@ -50,6 +50,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GeocodeServiceStubSettings extends StubSettings<GeocodeServiceStubSettings> {
diff --git a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GrpcDestinationServiceCallableFactory.java b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GrpcDestinationServiceCallableFactory.java
index 5a7fd81bd059..a3959e22962f 100644
--- a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GrpcDestinationServiceCallableFactory.java
+++ b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GrpcDestinationServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDestinationServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GrpcDestinationServiceStub.java b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GrpcDestinationServiceStub.java
index a802a81ce3cd..ffeb95275686 100644
--- a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GrpcDestinationServiceStub.java
+++ b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GrpcDestinationServiceStub.java
@@ -30,6 +30,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDestinationServiceStub extends DestinationServiceStub {
   private static final MethodDescriptor<SearchDestinationsRequest, SearchDestinationsResponse>
diff --git a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GrpcGeocodeServiceCallableFactory.java b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GrpcGeocodeServiceCallableFactory.java
index d3353b6c2b85..527bdd9b4f4b 100644
--- a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GrpcGeocodeServiceCallableFactory.java
+++ b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GrpcGeocodeServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGeocodeServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GrpcGeocodeServiceStub.java b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GrpcGeocodeServiceStub.java
index 43a344cacfe9..8529c3325238 100644
--- a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GrpcGeocodeServiceStub.java
+++ b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/GrpcGeocodeServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGeocodeServiceStub extends GeocodeServiceStub {
   private static final MethodDescriptor<GeocodeAddressRequest, GeocodeAddressResponse>
diff --git a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/HttpJsonDestinationServiceCallableFactory.java b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/HttpJsonDestinationServiceCallableFactory.java
index c31372cfe6b4..f7af6ff5b597 100644
--- a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/HttpJsonDestinationServiceCallableFactory.java
+++ b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/HttpJsonDestinationServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDestinationServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/HttpJsonDestinationServiceStub.java b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/HttpJsonDestinationServiceStub.java
index 873640bf3891..25a3e0f3fa1f 100644
--- a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/HttpJsonDestinationServiceStub.java
+++ b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/HttpJsonDestinationServiceStub.java
@@ -37,6 +37,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDestinationServiceStub extends DestinationServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/HttpJsonGeocodeServiceCallableFactory.java b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/HttpJsonGeocodeServiceCallableFactory.java
index a43f64f14be2..e47f05dddc8e 100644
--- a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/HttpJsonGeocodeServiceCallableFactory.java
+++ b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/HttpJsonGeocodeServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGeocodeServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/HttpJsonGeocodeServiceStub.java b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/HttpJsonGeocodeServiceStub.java
index 0eea3b5609bd..6bea5e8512cb 100644
--- a/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/HttpJsonGeocodeServiceStub.java
+++ b/java-maps-geocode/google-maps-geocode/src/main/java/com/google/maps/geocode/v4/stub/HttpJsonGeocodeServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGeocodeServiceStub extends GeocodeServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/MapManagementClient.java b/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/MapManagementClient.java
index f4a7eb46bb02..138d926cdf19 100644
--- a/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/MapManagementClient.java
+++ b/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/MapManagementClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -420,6 +421,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MapManagementClient implements BackgroundResource {
diff --git a/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/MapManagementSettings.java b/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/MapManagementSettings.java
index e44911cbffad..a04a51eb79c3 100644
--- a/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/MapManagementSettings.java
+++ b/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/MapManagementSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MapManagementSettings extends ClientSettings<MapManagementSettings> {
diff --git a/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/GrpcMapManagementCallableFactory.java b/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/GrpcMapManagementCallableFactory.java
index f21e27527ba3..cb7e87f91a4f 100644
--- a/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/GrpcMapManagementCallableFactory.java
+++ b/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/GrpcMapManagementCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMapManagementCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/GrpcMapManagementStub.java b/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/GrpcMapManagementStub.java
index 71e0f4b6c77c..7b69542db8fd 100644
--- a/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/GrpcMapManagementStub.java
+++ b/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/GrpcMapManagementStub.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMapManagementStub extends MapManagementStub {
diff --git a/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/HttpJsonMapManagementCallableFactory.java b/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/HttpJsonMapManagementCallableFactory.java
index af2b164248e1..e8aca2115ee3 100644
--- a/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/HttpJsonMapManagementCallableFactory.java
+++ b/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/HttpJsonMapManagementCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMapManagementCallableFactory
diff --git a/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/HttpJsonMapManagementStub.java b/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/HttpJsonMapManagementStub.java
index 76463797d358..83d558122abe 100644
--- a/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/HttpJsonMapManagementStub.java
+++ b/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/HttpJsonMapManagementStub.java
@@ -63,6 +63,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMapManagementStub extends MapManagementStub {
diff --git a/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/MapManagementStub.java b/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/MapManagementStub.java
index c2b328a2e974..0f1c0da4c970 100644
--- a/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/MapManagementStub.java
+++ b/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/MapManagementStub.java
@@ -46,6 +46,7 @@
 import com.google.maps.mapmanagement.v2beta.UpdateStyleConfigRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class MapManagementStub implements BackgroundResource {
diff --git a/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/MapManagementStubSettings.java b/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/MapManagementStubSettings.java
index 0ce607cd2e35..8c9d484b0118 100644
--- a/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/MapManagementStubSettings.java
+++ b/java-maps-mapmanagement/google-maps-mapmanagement/src/main/java/com/google/maps/mapmanagement/v2beta/stub/MapManagementStubSettings.java
@@ -76,6 +76,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-maps-mapmanagement/proto-google-maps-mapmanagement-v2beta/src/main/java/com/google/maps/mapmanagement/v2beta/MapConfigName.java b/java-maps-mapmanagement/proto-google-maps-mapmanagement-v2beta/src/main/java/com/google/maps/mapmanagement/v2beta/MapConfigName.java
index d2a1eb24af46..0fc246e4d38e 100644
--- a/java-maps-mapmanagement/proto-google-maps-mapmanagement-v2beta/src/main/java/com/google/maps/mapmanagement/v2beta/MapConfigName.java
+++ b/java-maps-mapmanagement/proto-google-maps-mapmanagement-v2beta/src/main/java/com/google/maps/mapmanagement/v2beta/MapConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MapConfigName implements ResourceName {
   private static final PathTemplate PROJECT_MAP_CONFIG =
diff --git a/java-maps-mapmanagement/proto-google-maps-mapmanagement-v2beta/src/main/java/com/google/maps/mapmanagement/v2beta/MapContextConfigName.java b/java-maps-mapmanagement/proto-google-maps-mapmanagement-v2beta/src/main/java/com/google/maps/mapmanagement/v2beta/MapContextConfigName.java
index 4108e8b8fbe9..52268c43ed9f 100644
--- a/java-maps-mapmanagement/proto-google-maps-mapmanagement-v2beta/src/main/java/com/google/maps/mapmanagement/v2beta/MapContextConfigName.java
+++ b/java-maps-mapmanagement/proto-google-maps-mapmanagement-v2beta/src/main/java/com/google/maps/mapmanagement/v2beta/MapContextConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MapContextConfigName implements ResourceName {
   private static final PathTemplate PROJECT_MAP_CONFIG_MAP_CONTEXT_CONFIG =
diff --git a/java-maps-mapmanagement/proto-google-maps-mapmanagement-v2beta/src/main/java/com/google/maps/mapmanagement/v2beta/ProjectName.java b/java-maps-mapmanagement/proto-google-maps-mapmanagement-v2beta/src/main/java/com/google/maps/mapmanagement/v2beta/ProjectName.java
index 13c552056c5b..0d6fe50c6544 100644
--- a/java-maps-mapmanagement/proto-google-maps-mapmanagement-v2beta/src/main/java/com/google/maps/mapmanagement/v2beta/ProjectName.java
+++ b/java-maps-mapmanagement/proto-google-maps-mapmanagement-v2beta/src/main/java/com/google/maps/mapmanagement/v2beta/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-maps-mapmanagement/proto-google-maps-mapmanagement-v2beta/src/main/java/com/google/maps/mapmanagement/v2beta/StyleConfigName.java b/java-maps-mapmanagement/proto-google-maps-mapmanagement-v2beta/src/main/java/com/google/maps/mapmanagement/v2beta/StyleConfigName.java
index 0ec0219d289d..2ec4df0c6a70 100644
--- a/java-maps-mapmanagement/proto-google-maps-mapmanagement-v2beta/src/main/java/com/google/maps/mapmanagement/v2beta/StyleConfigName.java
+++ b/java-maps-mapmanagement/proto-google-maps-mapmanagement-v2beta/src/main/java/com/google/maps/mapmanagement/v2beta/StyleConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StyleConfigName implements ResourceName {
   private static final PathTemplate PROJECT_STYLE_CONFIG =
diff --git a/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/MapsPlatformDatasetsClient.java b/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/MapsPlatformDatasetsClient.java
index c0c17431d506..e2d72a5ddaeb 100644
--- a/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/MapsPlatformDatasetsClient.java
+++ b/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/MapsPlatformDatasetsClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -240,6 +241,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MapsPlatformDatasetsClient implements BackgroundResource {
   private final MapsPlatformDatasetsSettings settings;
diff --git a/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/MapsPlatformDatasetsSettings.java b/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/MapsPlatformDatasetsSettings.java
index 2c1ffc1b4b48..e9eb7a032ea5 100644
--- a/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/MapsPlatformDatasetsSettings.java
+++ b/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/MapsPlatformDatasetsSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MapsPlatformDatasetsSettings extends ClientSettings<MapsPlatformDatasetsSettings> {
 
diff --git a/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/GrpcMapsPlatformDatasetsCallableFactory.java b/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/GrpcMapsPlatformDatasetsCallableFactory.java
index c8f8ed5dc506..d750bb449d9a 100644
--- a/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/GrpcMapsPlatformDatasetsCallableFactory.java
+++ b/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/GrpcMapsPlatformDatasetsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMapsPlatformDatasetsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/GrpcMapsPlatformDatasetsStub.java b/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/GrpcMapsPlatformDatasetsStub.java
index 9d5350f74295..c7474862040e 100644
--- a/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/GrpcMapsPlatformDatasetsStub.java
+++ b/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/GrpcMapsPlatformDatasetsStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMapsPlatformDatasetsStub extends MapsPlatformDatasetsStub {
   private static final MethodDescriptor<CreateDatasetRequest, Dataset>
diff --git a/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/HttpJsonMapsPlatformDatasetsCallableFactory.java b/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/HttpJsonMapsPlatformDatasetsCallableFactory.java
index f915d28e41b9..f4ac4eed0add 100644
--- a/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/HttpJsonMapsPlatformDatasetsCallableFactory.java
+++ b/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/HttpJsonMapsPlatformDatasetsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMapsPlatformDatasetsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/HttpJsonMapsPlatformDatasetsStub.java b/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/HttpJsonMapsPlatformDatasetsStub.java
index a9f6f579a2fc..963cae595d16 100644
--- a/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/HttpJsonMapsPlatformDatasetsStub.java
+++ b/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/HttpJsonMapsPlatformDatasetsStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMapsPlatformDatasetsStub extends MapsPlatformDatasetsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/MapsPlatformDatasetsStub.java b/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/MapsPlatformDatasetsStub.java
index acce64dac517..83f57d78c384 100644
--- a/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/MapsPlatformDatasetsStub.java
+++ b/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/MapsPlatformDatasetsStub.java
@@ -32,6 +32,7 @@
 import com.google.maps.mapsplatformdatasets.v1.UpdateDatasetMetadataRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MapsPlatformDatasetsStub implements BackgroundResource {
 
diff --git a/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/MapsPlatformDatasetsStubSettings.java b/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/MapsPlatformDatasetsStubSettings.java
index a592d1bfdb79..1460d429b991 100644
--- a/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/MapsPlatformDatasetsStubSettings.java
+++ b/java-maps-mapsplatformdatasets/google-maps-mapsplatformdatasets/src/main/java/com/google/maps/mapsplatformdatasets/v1/stub/MapsPlatformDatasetsStubSettings.java
@@ -65,6 +65,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MapsPlatformDatasetsStubSettings
diff --git a/java-maps-mapsplatformdatasets/proto-google-maps-mapsplatformdatasets-v1/src/main/java/com/google/maps/mapsplatformdatasets/v1/DatasetName.java b/java-maps-mapsplatformdatasets/proto-google-maps-mapsplatformdatasets-v1/src/main/java/com/google/maps/mapsplatformdatasets/v1/DatasetName.java
index dab9d0af8548..e8b55b66b5ce 100644
--- a/java-maps-mapsplatformdatasets/proto-google-maps-mapsplatformdatasets-v1/src/main/java/com/google/maps/mapsplatformdatasets/v1/DatasetName.java
+++ b/java-maps-mapsplatformdatasets/proto-google-maps-mapsplatformdatasets-v1/src/main/java/com/google/maps/mapsplatformdatasets/v1/DatasetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatasetName implements ResourceName {
   private static final PathTemplate PROJECT_DATASET =
diff --git a/java-maps-mapsplatformdatasets/proto-google-maps-mapsplatformdatasets-v1/src/main/java/com/google/maps/mapsplatformdatasets/v1/ProjectName.java b/java-maps-mapsplatformdatasets/proto-google-maps-mapsplatformdatasets-v1/src/main/java/com/google/maps/mapsplatformdatasets/v1/ProjectName.java
index 8ac3e58bd444..69efeb667f2a 100644
--- a/java-maps-mapsplatformdatasets/proto-google-maps-mapsplatformdatasets-v1/src/main/java/com/google/maps/mapsplatformdatasets/v1/ProjectName.java
+++ b/java-maps-mapsplatformdatasets/proto-google-maps-mapsplatformdatasets-v1/src/main/java/com/google/maps/mapsplatformdatasets/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/PlacesClient.java b/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/PlacesClient.java
index 06ff256bcf5b..3872b3c8c2de 100644
--- a/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/PlacesClient.java
+++ b/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/PlacesClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -201,6 +202,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PlacesClient implements BackgroundResource {
   private final PlacesSettings settings;
diff --git a/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/PlacesSettings.java b/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/PlacesSettings.java
index 2b0bd20cf3da..d7c91e4e6311 100644
--- a/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/PlacesSettings.java
+++ b/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/PlacesSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PlacesSettings extends ClientSettings<PlacesSettings> {
 
diff --git a/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/GrpcPlacesCallableFactory.java b/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/GrpcPlacesCallableFactory.java
index 09175ab8eccd..9c5b557ab75b 100644
--- a/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/GrpcPlacesCallableFactory.java
+++ b/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/GrpcPlacesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPlacesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/GrpcPlacesStub.java b/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/GrpcPlacesStub.java
index 856d262f0c95..37f0fcace0b6 100644
--- a/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/GrpcPlacesStub.java
+++ b/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/GrpcPlacesStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPlacesStub extends PlacesStub {
   private static final MethodDescriptor<SearchNearbyRequest, SearchNearbyResponse>
diff --git a/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/HttpJsonPlacesCallableFactory.java b/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/HttpJsonPlacesCallableFactory.java
index fdebbd2ab5dc..fac7450db08d 100644
--- a/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/HttpJsonPlacesCallableFactory.java
+++ b/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/HttpJsonPlacesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPlacesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/HttpJsonPlacesStub.java b/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/HttpJsonPlacesStub.java
index 107c1849ed43..2c88d0d4192d 100644
--- a/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/HttpJsonPlacesStub.java
+++ b/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/HttpJsonPlacesStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPlacesStub extends PlacesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/PlacesStub.java b/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/PlacesStub.java
index ceaba442379a..01aed11152dd 100644
--- a/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/PlacesStub.java
+++ b/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/PlacesStub.java
@@ -29,6 +29,7 @@
 import com.google.maps.places.v1.SearchTextRequest;
 import com.google.maps.places.v1.SearchTextResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PlacesStub implements BackgroundResource {
 
diff --git a/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/PlacesStubSettings.java b/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/PlacesStubSettings.java
index b08f810706a4..d293bc8a7a37 100644
--- a/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/PlacesStubSettings.java
+++ b/java-maps-places/google-maps-places/src/main/java/com/google/maps/places/v1/stub/PlacesStubSettings.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PlacesStubSettings extends StubSettings<PlacesStubSettings> {
diff --git a/java-maps-places/proto-google-maps-places-v1/src/main/java/com/google/maps/places/v1/PhotoMediaName.java b/java-maps-places/proto-google-maps-places-v1/src/main/java/com/google/maps/places/v1/PhotoMediaName.java
index 26b400bb32b6..5a9624bec2b4 100644
--- a/java-maps-places/proto-google-maps-places-v1/src/main/java/com/google/maps/places/v1/PhotoMediaName.java
+++ b/java-maps-places/proto-google-maps-places-v1/src/main/java/com/google/maps/places/v1/PhotoMediaName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PhotoMediaName implements ResourceName {
   private static final PathTemplate PLACE_ID_PHOTO_REFERENCE =
diff --git a/java-maps-places/proto-google-maps-places-v1/src/main/java/com/google/maps/places/v1/PlaceName.java b/java-maps-places/proto-google-maps-places-v1/src/main/java/com/google/maps/places/v1/PlaceName.java
index cd49661c407a..e653324d38c0 100644
--- a/java-maps-places/proto-google-maps-places-v1/src/main/java/com/google/maps/places/v1/PlaceName.java
+++ b/java-maps-places/proto-google-maps-places-v1/src/main/java/com/google/maps/places/v1/PlaceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PlaceName implements ResourceName {
   private static final PathTemplate PLACE_ID =
diff --git a/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/RouteOptimizationClient.java b/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/RouteOptimizationClient.java
index 017729810f99..f127e5fecdbf 100644
--- a/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/RouteOptimizationClient.java
+++ b/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/RouteOptimizationClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -215,6 +216,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RouteOptimizationClient implements BackgroundResource {
   private final RouteOptimizationSettings settings;
diff --git a/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/RouteOptimizationSettings.java b/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/RouteOptimizationSettings.java
index a5cc08015b82..abab1b39f820 100644
--- a/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/RouteOptimizationSettings.java
+++ b/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/RouteOptimizationSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RouteOptimizationSettings extends ClientSettings<RouteOptimizationSettings> {
 
diff --git a/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/GrpcRouteOptimizationCallableFactory.java b/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/GrpcRouteOptimizationCallableFactory.java
index e90e842c60e8..61ea7b8ffab2 100644
--- a/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/GrpcRouteOptimizationCallableFactory.java
+++ b/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/GrpcRouteOptimizationCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRouteOptimizationCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/GrpcRouteOptimizationStub.java b/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/GrpcRouteOptimizationStub.java
index 0b6fe23ce0e9..44f69400ad36 100644
--- a/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/GrpcRouteOptimizationStub.java
+++ b/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/GrpcRouteOptimizationStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRouteOptimizationStub extends RouteOptimizationStub {
   private static final MethodDescriptor<OptimizeToursRequest, OptimizeToursResponse>
diff --git a/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/HttpJsonRouteOptimizationCallableFactory.java b/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/HttpJsonRouteOptimizationCallableFactory.java
index 9922072bdc11..b63e76756df1 100644
--- a/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/HttpJsonRouteOptimizationCallableFactory.java
+++ b/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/HttpJsonRouteOptimizationCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRouteOptimizationCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/HttpJsonRouteOptimizationStub.java b/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/HttpJsonRouteOptimizationStub.java
index 89c81730dfd0..107b26a78a5a 100644
--- a/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/HttpJsonRouteOptimizationStub.java
+++ b/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/HttpJsonRouteOptimizationStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRouteOptimizationStub extends RouteOptimizationStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/RouteOptimizationStub.java b/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/RouteOptimizationStub.java
index f9e810c74a0d..85a4b196e89a 100644
--- a/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/RouteOptimizationStub.java
+++ b/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/RouteOptimizationStub.java
@@ -31,6 +31,7 @@
 import com.google.maps.routeoptimization.v1.OptimizeToursUriRequest;
 import com.google.maps.routeoptimization.v1.OptimizeToursUriResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RouteOptimizationStub implements BackgroundResource {
 
diff --git a/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/RouteOptimizationStubSettings.java b/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/RouteOptimizationStubSettings.java
index 5cc2f994e0e0..1d301a706337 100644
--- a/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/RouteOptimizationStubSettings.java
+++ b/java-maps-routeoptimization/google-maps-routeoptimization/src/main/java/com/google/maps/routeoptimization/v1/stub/RouteOptimizationStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RouteOptimizationStubSettings extends StubSettings<RouteOptimizationStubSettings> {
diff --git a/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/RoutesClient.java b/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/RoutesClient.java
index 5e021a2b343c..7d2a4ce48563 100644
--- a/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/RoutesClient.java
+++ b/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/RoutesClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -176,6 +177,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RoutesClient implements BackgroundResource {
   private final RoutesSettings settings;
diff --git a/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/RoutesSettings.java b/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/RoutesSettings.java
index 7d5a503235d1..6b8c6c58658c 100644
--- a/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/RoutesSettings.java
+++ b/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/RoutesSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RoutesSettings extends ClientSettings<RoutesSettings> {
 
diff --git a/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/GrpcRoutesCallableFactory.java b/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/GrpcRoutesCallableFactory.java
index 8d79e3a6dc35..22b822df7356 100644
--- a/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/GrpcRoutesCallableFactory.java
+++ b/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/GrpcRoutesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRoutesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/GrpcRoutesStub.java b/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/GrpcRoutesStub.java
index d4bf9728c79c..09f17b21f5dd 100644
--- a/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/GrpcRoutesStub.java
+++ b/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/GrpcRoutesStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRoutesStub extends RoutesStub {
   private static final MethodDescriptor<ComputeRoutesRequest, ComputeRoutesResponse>
diff --git a/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/HttpJsonRoutesCallableFactory.java b/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/HttpJsonRoutesCallableFactory.java
index 1b8c350d106e..f59b3385f29d 100644
--- a/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/HttpJsonRoutesCallableFactory.java
+++ b/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/HttpJsonRoutesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRoutesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/HttpJsonRoutesStub.java b/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/HttpJsonRoutesStub.java
index fde689173327..0ca4e9986181 100644
--- a/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/HttpJsonRoutesStub.java
+++ b/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/HttpJsonRoutesStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRoutesStub extends RoutesStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/RoutesStub.java b/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/RoutesStub.java
index e7d0c603ea9f..65828486b381 100644
--- a/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/RoutesStub.java
+++ b/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/RoutesStub.java
@@ -24,6 +24,7 @@
 import com.google.maps.routing.v2.ComputeRoutesResponse;
 import com.google.maps.routing.v2.RouteMatrixElement;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RoutesStub implements BackgroundResource {
 
diff --git a/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/RoutesStubSettings.java b/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/RoutesStubSettings.java
index ce8c7533f7db..38f5b78554bb 100644
--- a/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/RoutesStubSettings.java
+++ b/java-maps-routing/google-maps-routing/src/main/java/com/google/maps/routing/v2/stub/RoutesStubSettings.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RoutesStubSettings extends StubSettings<RoutesStubSettings> {
diff --git a/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/SolarClient.java b/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/SolarClient.java
index 713d5597bd78..6927893d7589 100644
--- a/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/SolarClient.java
+++ b/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/SolarClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SolarClient implements BackgroundResource {
   private final SolarSettings settings;
diff --git a/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/SolarSettings.java b/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/SolarSettings.java
index ab4c9f7c4371..711802e1d514 100644
--- a/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/SolarSettings.java
+++ b/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/SolarSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SolarSettings extends ClientSettings<SolarSettings> {
 
diff --git a/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/GrpcSolarCallableFactory.java b/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/GrpcSolarCallableFactory.java
index 9f5ea3fff2d5..7dbf50874d6b 100644
--- a/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/GrpcSolarCallableFactory.java
+++ b/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/GrpcSolarCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSolarCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/GrpcSolarStub.java b/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/GrpcSolarStub.java
index 6f15ab5d1740..cf4087e6cf1b 100644
--- a/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/GrpcSolarStub.java
+++ b/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/GrpcSolarStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSolarStub extends SolarStub {
   private static final MethodDescriptor<FindClosestBuildingInsightsRequest, BuildingInsights>
diff --git a/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/HttpJsonSolarCallableFactory.java b/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/HttpJsonSolarCallableFactory.java
index 7c717d8a8364..e0cc3afb254b 100644
--- a/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/HttpJsonSolarCallableFactory.java
+++ b/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/HttpJsonSolarCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSolarCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/HttpJsonSolarStub.java b/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/HttpJsonSolarStub.java
index 1ca5bc0de325..7612942836f8 100644
--- a/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/HttpJsonSolarStub.java
+++ b/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/HttpJsonSolarStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSolarStub extends SolarStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/SolarStub.java b/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/SolarStub.java
index 832077e6127a..da72522acfc3 100644
--- a/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/SolarStub.java
+++ b/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/SolarStub.java
@@ -25,6 +25,7 @@
 import com.google.maps.solar.v1.GetDataLayersRequest;
 import com.google.maps.solar.v1.GetGeoTiffRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SolarStub implements BackgroundResource {
 
diff --git a/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/SolarStubSettings.java b/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/SolarStubSettings.java
index c109e3cfcdd3..79852c4c5681 100644
--- a/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/SolarStubSettings.java
+++ b/java-maps-solar/google-maps-solar/src/main/java/com/google/maps/solar/v1/stub/SolarStubSettings.java
@@ -50,6 +50,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SolarStubSettings extends StubSettings<SolarStubSettings> {
diff --git a/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/MarketingplatformAdminServiceClient.java b/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/MarketingplatformAdminServiceClient.java
index 52c0a5b7c142..fc5d9666f5dc 100644
--- a/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/MarketingplatformAdminServiceClient.java
+++ b/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/MarketingplatformAdminServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -270,6 +271,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MarketingplatformAdminServiceClient implements BackgroundResource {
diff --git a/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/MarketingplatformAdminServiceSettings.java b/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/MarketingplatformAdminServiceSettings.java
index 3a542130a824..0d01f9f25a82 100644
--- a/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/MarketingplatformAdminServiceSettings.java
+++ b/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/MarketingplatformAdminServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MarketingplatformAdminServiceSettings
diff --git a/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/GrpcMarketingplatformAdminServiceCallableFactory.java b/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/GrpcMarketingplatformAdminServiceCallableFactory.java
index c2d310192eb5..ccf5a18228e8 100644
--- a/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/GrpcMarketingplatformAdminServiceCallableFactory.java
+++ b/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/GrpcMarketingplatformAdminServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMarketingplatformAdminServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/GrpcMarketingplatformAdminServiceStub.java b/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/GrpcMarketingplatformAdminServiceStub.java
index a63d8c2b334f..de81457e7799 100644
--- a/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/GrpcMarketingplatformAdminServiceStub.java
+++ b/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/GrpcMarketingplatformAdminServiceStub.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMarketingplatformAdminServiceStub extends MarketingplatformAdminServiceStub {
diff --git a/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/HttpJsonMarketingplatformAdminServiceCallableFactory.java b/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/HttpJsonMarketingplatformAdminServiceCallableFactory.java
index 63818180ddb8..69dc713f737a 100644
--- a/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/HttpJsonMarketingplatformAdminServiceCallableFactory.java
+++ b/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/HttpJsonMarketingplatformAdminServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMarketingplatformAdminServiceCallableFactory
diff --git a/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/HttpJsonMarketingplatformAdminServiceStub.java b/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/HttpJsonMarketingplatformAdminServiceStub.java
index a7ad3b66372c..94da39cb8b95 100644
--- a/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/HttpJsonMarketingplatformAdminServiceStub.java
+++ b/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/HttpJsonMarketingplatformAdminServiceStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMarketingplatformAdminServiceStub extends MarketingplatformAdminServiceStub {
diff --git a/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/MarketingplatformAdminServiceStub.java b/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/MarketingplatformAdminServiceStub.java
index 701e4037cc26..4dcd03a2c2d3 100644
--- a/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/MarketingplatformAdminServiceStub.java
+++ b/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/MarketingplatformAdminServiceStub.java
@@ -39,6 +39,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class MarketingplatformAdminServiceStub implements BackgroundResource {
diff --git a/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/MarketingplatformAdminServiceStubSettings.java b/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/MarketingplatformAdminServiceStubSettings.java
index 33c49f0b6538..2146d96c546e 100644
--- a/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/MarketingplatformAdminServiceStubSettings.java
+++ b/java-marketingplatformadminapi/admin/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/stub/MarketingplatformAdminServiceStubSettings.java
@@ -70,6 +70,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-marketingplatformadminapi/proto-admin-v1alpha/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/AnalyticsAccountLinkName.java b/java-marketingplatformadminapi/proto-admin-v1alpha/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/AnalyticsAccountLinkName.java
index 170e9790a97a..d0c63bcd09af 100644
--- a/java-marketingplatformadminapi/proto-admin-v1alpha/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/AnalyticsAccountLinkName.java
+++ b/java-marketingplatformadminapi/proto-admin-v1alpha/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/AnalyticsAccountLinkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnalyticsAccountLinkName implements ResourceName {
   private static final PathTemplate ORGANIZATION_ANALYTICS_ACCOUNT_LINK =
diff --git a/java-marketingplatformadminapi/proto-admin-v1alpha/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/OrganizationName.java b/java-marketingplatformadminapi/proto-admin-v1alpha/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/OrganizationName.java
index 70b0a8693038..68ae4f762382 100644
--- a/java-marketingplatformadminapi/proto-admin-v1alpha/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/OrganizationName.java
+++ b/java-marketingplatformadminapi/proto-admin-v1alpha/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-marketingplatformadminapi/proto-admin-v1alpha/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/PropertyName.java b/java-marketingplatformadminapi/proto-admin-v1alpha/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/PropertyName.java
index 3ea693fc82be..f0483ebf20cd 100644
--- a/java-marketingplatformadminapi/proto-admin-v1alpha/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/PropertyName.java
+++ b/java-marketingplatformadminapi/proto-admin-v1alpha/src/main/java/com/google/ads/marketingplatform/admin/v1alpha/PropertyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PropertyName implements ResourceName {
   private static final PathTemplate PROPERTY =
diff --git a/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/SpeechTranslationServiceClient.java b/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/SpeechTranslationServiceClient.java
index 40061738fb12..ff51bf8aa68d 100644
--- a/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/SpeechTranslationServiceClient.java
+++ b/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/SpeechTranslationServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SpeechTranslationServiceClient implements BackgroundResource {
diff --git a/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/SpeechTranslationServiceSettings.java b/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/SpeechTranslationServiceSettings.java
index c970265610b6..8d477ecdaf05 100644
--- a/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/SpeechTranslationServiceSettings.java
+++ b/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/SpeechTranslationServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SpeechTranslationServiceSettings
diff --git a/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/stub/GrpcSpeechTranslationServiceCallableFactory.java b/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/stub/GrpcSpeechTranslationServiceCallableFactory.java
index 4ad57d00addc..580d0c0a5ed8 100644
--- a/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/stub/GrpcSpeechTranslationServiceCallableFactory.java
+++ b/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/stub/GrpcSpeechTranslationServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSpeechTranslationServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/stub/GrpcSpeechTranslationServiceStub.java b/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/stub/GrpcSpeechTranslationServiceStub.java
index 4dd6126c86e3..bd536c2675d0 100644
--- a/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/stub/GrpcSpeechTranslationServiceStub.java
+++ b/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/stub/GrpcSpeechTranslationServiceStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSpeechTranslationServiceStub extends SpeechTranslationServiceStub {
diff --git a/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/stub/SpeechTranslationServiceStub.java b/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/stub/SpeechTranslationServiceStub.java
index ac8eeea5a143..b24613166cce 100644
--- a/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/stub/SpeechTranslationServiceStub.java
+++ b/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/stub/SpeechTranslationServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.mediatranslation.v1beta1.StreamingTranslateSpeechRequest;
 import com.google.cloud.mediatranslation.v1beta1.StreamingTranslateSpeechResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SpeechTranslationServiceStub implements BackgroundResource {
diff --git a/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/stub/SpeechTranslationServiceStubSettings.java b/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/stub/SpeechTranslationServiceStubSettings.java
index 95172d847d11..877d9086d24a 100644
--- a/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/stub/SpeechTranslationServiceStubSettings.java
+++ b/java-mediatranslation/google-cloud-mediatranslation/src/main/java/com/google/cloud/mediatranslation/v1beta1/stub/SpeechTranslationServiceStubSettings.java
@@ -44,6 +44,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/ConferenceRecordsServiceClient.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/ConferenceRecordsServiceClient.java
index 93215167ed46..f420a9df5ee2 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/ConferenceRecordsServiceClient.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/ConferenceRecordsServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -352,6 +353,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConferenceRecordsServiceClient implements BackgroundResource {
   private final ConferenceRecordsServiceSettings settings;
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/ConferenceRecordsServiceSettings.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/ConferenceRecordsServiceSettings.java
index 2ba8725ae6c5..81a8d61c4f79 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/ConferenceRecordsServiceSettings.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/ConferenceRecordsServiceSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConferenceRecordsServiceSettings
     extends ClientSettings<ConferenceRecordsServiceSettings> {
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/SpacesServiceClient.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/SpacesServiceClient.java
index 5273248669ee..98bcef796abb 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/SpacesServiceClient.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/SpacesServiceClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -187,6 +188,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpacesServiceClient implements BackgroundResource {
   private final SpacesServiceSettings settings;
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/SpacesServiceSettings.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/SpacesServiceSettings.java
index 385f5829764f..322b492e7dcc 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/SpacesServiceSettings.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/SpacesServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpacesServiceSettings extends ClientSettings<SpacesServiceSettings> {
 
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/ConferenceRecordsServiceStub.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/ConferenceRecordsServiceStub.java
index 86ed788f8ede..2b42173ce9e2 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/ConferenceRecordsServiceStub.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/ConferenceRecordsServiceStub.java
@@ -50,6 +50,7 @@
 import com.google.apps.meet.v2.Transcript;
 import com.google.apps.meet.v2.TranscriptEntry;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ConferenceRecordsServiceStub implements BackgroundResource {
 
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/ConferenceRecordsServiceStubSettings.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/ConferenceRecordsServiceStubSettings.java
index 6c873ac2df05..ccccc7f71306 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/ConferenceRecordsServiceStubSettings.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/ConferenceRecordsServiceStubSettings.java
@@ -82,6 +82,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -134,6 +135,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ConferenceRecordsServiceStubSettings
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/GrpcConferenceRecordsServiceCallableFactory.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/GrpcConferenceRecordsServiceCallableFactory.java
index 3b164706f513..921d805e94a0 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/GrpcConferenceRecordsServiceCallableFactory.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/GrpcConferenceRecordsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConferenceRecordsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/GrpcConferenceRecordsServiceStub.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/GrpcConferenceRecordsServiceStub.java
index 0e1540c59705..1f8700ae01bc 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/GrpcConferenceRecordsServiceStub.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/GrpcConferenceRecordsServiceStub.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConferenceRecordsServiceStub extends ConferenceRecordsServiceStub {
   private static final MethodDescriptor<GetConferenceRecordRequest, ConferenceRecord>
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/GrpcSpacesServiceCallableFactory.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/GrpcSpacesServiceCallableFactory.java
index 7122b2e34c58..8218e4d0dc35 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/GrpcSpacesServiceCallableFactory.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/GrpcSpacesServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSpacesServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/GrpcSpacesServiceStub.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/GrpcSpacesServiceStub.java
index d6fb7a0e6b41..a7b89cbf0b9d 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/GrpcSpacesServiceStub.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/GrpcSpacesServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSpacesServiceStub extends SpacesServiceStub {
   private static final MethodDescriptor<CreateSpaceRequest, Space> createSpaceMethodDescriptor =
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/HttpJsonConferenceRecordsServiceCallableFactory.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/HttpJsonConferenceRecordsServiceCallableFactory.java
index 6eeb5f3e8027..a2ea8c71f276 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/HttpJsonConferenceRecordsServiceCallableFactory.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/HttpJsonConferenceRecordsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConferenceRecordsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/HttpJsonConferenceRecordsServiceStub.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/HttpJsonConferenceRecordsServiceStub.java
index cb7c9d34900e..e9dea4e2da8e 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/HttpJsonConferenceRecordsServiceStub.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/HttpJsonConferenceRecordsServiceStub.java
@@ -67,6 +67,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConferenceRecordsServiceStub extends ConferenceRecordsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/HttpJsonSpacesServiceCallableFactory.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/HttpJsonSpacesServiceCallableFactory.java
index 46c626ed3b24..b9ccd9ef37e3 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/HttpJsonSpacesServiceCallableFactory.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/HttpJsonSpacesServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSpacesServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/HttpJsonSpacesServiceStub.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/HttpJsonSpacesServiceStub.java
index 377ff8dd4959..d4df2c18211f 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/HttpJsonSpacesServiceStub.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/HttpJsonSpacesServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSpacesServiceStub extends SpacesServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/SpacesServiceStub.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/SpacesServiceStub.java
index 0050fa47afee..29719ec95700 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/SpacesServiceStub.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/SpacesServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.apps.meet.v2.UpdateSpaceRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SpacesServiceStub implements BackgroundResource {
 
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/SpacesServiceStubSettings.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/SpacesServiceStubSettings.java
index 972edb3dbe98..dfc401a67f9c 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/SpacesServiceStubSettings.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2/stub/SpacesServiceStubSettings.java
@@ -50,6 +50,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SpacesServiceStubSettings extends StubSettings<SpacesServiceStubSettings> {
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/ConferenceRecordsServiceClient.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/ConferenceRecordsServiceClient.java
index 6ade485fd354..5762c36eecd0 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/ConferenceRecordsServiceClient.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/ConferenceRecordsServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -353,6 +354,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConferenceRecordsServiceClient implements BackgroundResource {
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/ConferenceRecordsServiceSettings.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/ConferenceRecordsServiceSettings.java
index 566b6e5ab7b5..74f5399d0987 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/ConferenceRecordsServiceSettings.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/ConferenceRecordsServiceSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConferenceRecordsServiceSettings
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/SpacesServiceClient.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/SpacesServiceClient.java
index 3ba9d59378a9..663b61168183 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/SpacesServiceClient.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/SpacesServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -297,6 +298,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SpacesServiceClient implements BackgroundResource {
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/SpacesServiceSettings.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/SpacesServiceSettings.java
index 891fbb0a57fb..46d1e8f75643 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/SpacesServiceSettings.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/SpacesServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SpacesServiceSettings extends ClientSettings<SpacesServiceSettings> {
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/ConferenceRecordsServiceStub.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/ConferenceRecordsServiceStub.java
index 51c4203fa65d..bf121df084b6 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/ConferenceRecordsServiceStub.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/ConferenceRecordsServiceStub.java
@@ -51,6 +51,7 @@
 import com.google.apps.meet.v2beta.Transcript;
 import com.google.apps.meet.v2beta.TranscriptEntry;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ConferenceRecordsServiceStub implements BackgroundResource {
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/ConferenceRecordsServiceStubSettings.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/ConferenceRecordsServiceStubSettings.java
index 12963664d283..37ea83fa4672 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/ConferenceRecordsServiceStubSettings.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/ConferenceRecordsServiceStubSettings.java
@@ -82,6 +82,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -134,6 +135,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/GrpcConferenceRecordsServiceCallableFactory.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/GrpcConferenceRecordsServiceCallableFactory.java
index b936b1268c26..456f13732650 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/GrpcConferenceRecordsServiceCallableFactory.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/GrpcConferenceRecordsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConferenceRecordsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/GrpcConferenceRecordsServiceStub.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/GrpcConferenceRecordsServiceStub.java
index 1f54df7051c9..5c3a54c71402 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/GrpcConferenceRecordsServiceStub.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/GrpcConferenceRecordsServiceStub.java
@@ -61,6 +61,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConferenceRecordsServiceStub extends ConferenceRecordsServiceStub {
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/GrpcSpacesServiceCallableFactory.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/GrpcSpacesServiceCallableFactory.java
index 5ccb8f7ca152..21454a0123d7 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/GrpcSpacesServiceCallableFactory.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/GrpcSpacesServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSpacesServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/GrpcSpacesServiceStub.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/GrpcSpacesServiceStub.java
index 78d54e718b8f..9f8a02ba62b2 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/GrpcSpacesServiceStub.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/GrpcSpacesServiceStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSpacesServiceStub extends SpacesServiceStub {
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/HttpJsonConferenceRecordsServiceCallableFactory.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/HttpJsonConferenceRecordsServiceCallableFactory.java
index e37d984d9117..3dc85286d64d 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/HttpJsonConferenceRecordsServiceCallableFactory.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/HttpJsonConferenceRecordsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConferenceRecordsServiceCallableFactory
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/HttpJsonConferenceRecordsServiceStub.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/HttpJsonConferenceRecordsServiceStub.java
index 84ad8b98fc87..4879937785fb 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/HttpJsonConferenceRecordsServiceStub.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/HttpJsonConferenceRecordsServiceStub.java
@@ -68,6 +68,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConferenceRecordsServiceStub extends ConferenceRecordsServiceStub {
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/HttpJsonSpacesServiceCallableFactory.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/HttpJsonSpacesServiceCallableFactory.java
index a96b2ea5df75..f5c057a31fa9 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/HttpJsonSpacesServiceCallableFactory.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/HttpJsonSpacesServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSpacesServiceCallableFactory
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/HttpJsonSpacesServiceStub.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/HttpJsonSpacesServiceStub.java
index 5fd3a56abf2b..d92bed006cc4 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/HttpJsonSpacesServiceStub.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/HttpJsonSpacesServiceStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSpacesServiceStub extends SpacesServiceStub {
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/SpacesServiceStub.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/SpacesServiceStub.java
index 2786a7f2d511..5843877c344c 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/SpacesServiceStub.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/SpacesServiceStub.java
@@ -36,6 +36,7 @@
 import com.google.apps.meet.v2beta.UpdateSpaceRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SpacesServiceStub implements BackgroundResource {
diff --git a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/SpacesServiceStubSettings.java b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/SpacesServiceStubSettings.java
index aecbbc4d8fb9..dacb312e9403 100644
--- a/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/SpacesServiceStubSettings.java
+++ b/java-meet/google-cloud-meet/src/main/java/com/google/apps/meet/v2beta/stub/SpacesServiceStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/ConferenceRecordName.java b/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/ConferenceRecordName.java
index 976bf0db9b67..214efa96c6be 100644
--- a/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/ConferenceRecordName.java
+++ b/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/ConferenceRecordName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConferenceRecordName implements ResourceName {
   private static final PathTemplate CONFERENCE_RECORD =
diff --git a/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/ParticipantName.java b/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/ParticipantName.java
index 6d5fb4d14841..5e6ebc6203a5 100644
--- a/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/ParticipantName.java
+++ b/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/ParticipantName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ParticipantName implements ResourceName {
   private static final PathTemplate CONFERENCE_RECORD_PARTICIPANT =
diff --git a/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/ParticipantSessionName.java b/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/ParticipantSessionName.java
index 5440aecdc130..5f166a943ede 100644
--- a/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/ParticipantSessionName.java
+++ b/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/ParticipantSessionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ParticipantSessionName implements ResourceName {
   private static final PathTemplate CONFERENCE_RECORD_PARTICIPANT_PARTICIPANT_SESSION =
diff --git a/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/RecordingName.java b/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/RecordingName.java
index ef9bfd62301c..f0448e874c78 100644
--- a/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/RecordingName.java
+++ b/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/RecordingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RecordingName implements ResourceName {
   private static final PathTemplate CONFERENCE_RECORD_RECORDING =
diff --git a/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/SpaceName.java b/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/SpaceName.java
index edbe8595c85d..5a0ffd5b6289 100644
--- a/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/SpaceName.java
+++ b/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/SpaceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpaceName implements ResourceName {
   private static final PathTemplate SPACE = PathTemplate.createWithoutUrlEncoding("spaces/{space}");
diff --git a/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/TranscriptEntryName.java b/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/TranscriptEntryName.java
index 87b4a4d00972..90f91bb3afc0 100644
--- a/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/TranscriptEntryName.java
+++ b/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/TranscriptEntryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TranscriptEntryName implements ResourceName {
   private static final PathTemplate CONFERENCE_RECORD_TRANSCRIPT_ENTRY =
diff --git a/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/TranscriptName.java b/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/TranscriptName.java
index cf4916a50053..4edc18e7344d 100644
--- a/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/TranscriptName.java
+++ b/java-meet/proto-google-cloud-meet-v2/src/main/java/com/google/apps/meet/v2/TranscriptName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TranscriptName implements ResourceName {
   private static final PathTemplate CONFERENCE_RECORD_TRANSCRIPT =
diff --git a/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/ConferenceRecordName.java b/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/ConferenceRecordName.java
index 9b12e8807bbd..fe165824d943 100644
--- a/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/ConferenceRecordName.java
+++ b/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/ConferenceRecordName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConferenceRecordName implements ResourceName {
   private static final PathTemplate CONFERENCE_RECORD =
diff --git a/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/MemberName.java b/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/MemberName.java
index 503ee32917c3..9f1ed26d8693 100644
--- a/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/MemberName.java
+++ b/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/MemberName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MemberName implements ResourceName {
   private static final PathTemplate SPACE_MEMBER =
diff --git a/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/ParticipantName.java b/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/ParticipantName.java
index 2e61bc94350c..2ee87fea9436 100644
--- a/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/ParticipantName.java
+++ b/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/ParticipantName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ParticipantName implements ResourceName {
   private static final PathTemplate CONFERENCE_RECORD_PARTICIPANT =
diff --git a/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/ParticipantSessionName.java b/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/ParticipantSessionName.java
index bb04de9fc54d..8e4dfcb35ad1 100644
--- a/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/ParticipantSessionName.java
+++ b/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/ParticipantSessionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ParticipantSessionName implements ResourceName {
   private static final PathTemplate CONFERENCE_RECORD_PARTICIPANT_PARTICIPANT_SESSION =
diff --git a/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/RecordingName.java b/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/RecordingName.java
index a9290f069377..6343f66d79ef 100644
--- a/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/RecordingName.java
+++ b/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/RecordingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RecordingName implements ResourceName {
   private static final PathTemplate CONFERENCE_RECORD_RECORDING =
diff --git a/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/SpaceName.java b/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/SpaceName.java
index 3d6a4c49128f..0ea4a01f3514 100644
--- a/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/SpaceName.java
+++ b/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/SpaceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpaceName implements ResourceName {
   private static final PathTemplate SPACE = PathTemplate.createWithoutUrlEncoding("spaces/{space}");
diff --git a/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/TranscriptEntryName.java b/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/TranscriptEntryName.java
index 01e143669ad2..bfe1fa85018c 100644
--- a/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/TranscriptEntryName.java
+++ b/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/TranscriptEntryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TranscriptEntryName implements ResourceName {
   private static final PathTemplate CONFERENCE_RECORD_TRANSCRIPT_ENTRY =
diff --git a/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/TranscriptName.java b/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/TranscriptName.java
index 2ec1d06c25a2..0053a9958e48 100644
--- a/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/TranscriptName.java
+++ b/java-meet/proto-google-cloud-meet-v2beta/src/main/java/com/google/apps/meet/v2beta/TranscriptName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TranscriptName implements ResourceName {
   private static final PathTemplate CONFERENCE_RECORD_TRANSCRIPT =
diff --git a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/CloudMemcacheClient.java b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/CloudMemcacheClient.java
index 14f08281bc52..0a3ee1860039 100644
--- a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/CloudMemcacheClient.java
+++ b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/CloudMemcacheClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -333,6 +334,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudMemcacheClient implements BackgroundResource {
   private final CloudMemcacheSettings settings;
diff --git a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/CloudMemcacheSettings.java b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/CloudMemcacheSettings.java
index 0120fa0894c0..42d8161a5f7b 100644
--- a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/CloudMemcacheSettings.java
+++ b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/CloudMemcacheSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudMemcacheSettings extends ClientSettings<CloudMemcacheSettings> {
 
diff --git a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/CloudMemcacheStub.java b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/CloudMemcacheStub.java
index 03e02a0826d7..d9c48add721e 100644
--- a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/CloudMemcacheStub.java
+++ b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/CloudMemcacheStub.java
@@ -41,6 +41,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CloudMemcacheStub implements BackgroundResource {
 
diff --git a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/CloudMemcacheStubSettings.java b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/CloudMemcacheStubSettings.java
index e20be145395a..825110b49e90 100644
--- a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/CloudMemcacheStubSettings.java
+++ b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/CloudMemcacheStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CloudMemcacheStubSettings extends StubSettings<CloudMemcacheStubSettings> {
diff --git a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/GrpcCloudMemcacheCallableFactory.java b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/GrpcCloudMemcacheCallableFactory.java
index e272e00e07ff..0f538e480b5d 100644
--- a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/GrpcCloudMemcacheCallableFactory.java
+++ b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/GrpcCloudMemcacheCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudMemcacheCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/GrpcCloudMemcacheStub.java b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/GrpcCloudMemcacheStub.java
index 302d8363240a..98db75557fba 100644
--- a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/GrpcCloudMemcacheStub.java
+++ b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/GrpcCloudMemcacheStub.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudMemcacheStub extends CloudMemcacheStub {
   private static final MethodDescriptor<ListInstancesRequest, ListInstancesResponse>
diff --git a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/HttpJsonCloudMemcacheCallableFactory.java b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/HttpJsonCloudMemcacheCallableFactory.java
index 0b01692fd301..d256398d9caf 100644
--- a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/HttpJsonCloudMemcacheCallableFactory.java
+++ b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/HttpJsonCloudMemcacheCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudMemcacheCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/HttpJsonCloudMemcacheStub.java b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/HttpJsonCloudMemcacheStub.java
index 258f69c04e25..13ec26344429 100644
--- a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/HttpJsonCloudMemcacheStub.java
+++ b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1/stub/HttpJsonCloudMemcacheStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudMemcacheStub extends CloudMemcacheStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/CloudMemcacheClient.java b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/CloudMemcacheClient.java
index 0e18d47e2fc9..0cadbde5836b 100644
--- a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/CloudMemcacheClient.java
+++ b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/CloudMemcacheClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -353,6 +354,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudMemcacheClient implements BackgroundResource {
diff --git a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/CloudMemcacheSettings.java b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/CloudMemcacheSettings.java
index 02f4fdd96d69..c3241a4c6a15 100644
--- a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/CloudMemcacheSettings.java
+++ b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/CloudMemcacheSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudMemcacheSettings extends ClientSettings<CloudMemcacheSettings> {
diff --git a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/CloudMemcacheStub.java b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/CloudMemcacheStub.java
index 4a7135e87184..9148329db2d2 100644
--- a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/CloudMemcacheStub.java
+++ b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/CloudMemcacheStub.java
@@ -43,6 +43,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CloudMemcacheStub implements BackgroundResource {
diff --git a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/CloudMemcacheStubSettings.java b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/CloudMemcacheStubSettings.java
index d367d7c9996b..d3a4cccfb316 100644
--- a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/CloudMemcacheStubSettings.java
+++ b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/CloudMemcacheStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/GrpcCloudMemcacheCallableFactory.java b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/GrpcCloudMemcacheCallableFactory.java
index a4f7debe5900..787f34059c0f 100644
--- a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/GrpcCloudMemcacheCallableFactory.java
+++ b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/GrpcCloudMemcacheCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudMemcacheCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/GrpcCloudMemcacheStub.java b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/GrpcCloudMemcacheStub.java
index c45b8e6c4333..1051606a5a6d 100644
--- a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/GrpcCloudMemcacheStub.java
+++ b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/GrpcCloudMemcacheStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudMemcacheStub extends CloudMemcacheStub {
diff --git a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/HttpJsonCloudMemcacheCallableFactory.java b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/HttpJsonCloudMemcacheCallableFactory.java
index bce7bd7f64a9..d7b56f56c152 100644
--- a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/HttpJsonCloudMemcacheCallableFactory.java
+++ b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/HttpJsonCloudMemcacheCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudMemcacheCallableFactory
diff --git a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/HttpJsonCloudMemcacheStub.java b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/HttpJsonCloudMemcacheStub.java
index 6c1a852de91d..4bb94f213fb7 100644
--- a/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/HttpJsonCloudMemcacheStub.java
+++ b/java-memcache/google-cloud-memcache/src/main/java/com/google/cloud/memcache/v1beta2/stub/HttpJsonCloudMemcacheStub.java
@@ -63,6 +63,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudMemcacheStub extends CloudMemcacheStub {
diff --git a/java-memcache/proto-google-cloud-memcache-v1/src/main/java/com/google/cloud/memcache/v1/InstanceName.java b/java-memcache/proto-google-cloud-memcache-v1/src/main/java/com/google/cloud/memcache/v1/InstanceName.java
index b17115ac72f9..fe1d960199a1 100644
--- a/java-memcache/proto-google-cloud-memcache-v1/src/main/java/com/google/cloud/memcache/v1/InstanceName.java
+++ b/java-memcache/proto-google-cloud-memcache-v1/src/main/java/com/google/cloud/memcache/v1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-memcache/proto-google-cloud-memcache-v1/src/main/java/com/google/cloud/memcache/v1/LocationName.java b/java-memcache/proto-google-cloud-memcache-v1/src/main/java/com/google/cloud/memcache/v1/LocationName.java
index 717333a99104..75808d521ac2 100644
--- a/java-memcache/proto-google-cloud-memcache-v1/src/main/java/com/google/cloud/memcache/v1/LocationName.java
+++ b/java-memcache/proto-google-cloud-memcache-v1/src/main/java/com/google/cloud/memcache/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-memcache/proto-google-cloud-memcache-v1beta2/src/main/java/com/google/cloud/memcache/v1beta2/InstanceName.java b/java-memcache/proto-google-cloud-memcache-v1beta2/src/main/java/com/google/cloud/memcache/v1beta2/InstanceName.java
index 50cc81e4f33a..6f7035afce1c 100644
--- a/java-memcache/proto-google-cloud-memcache-v1beta2/src/main/java/com/google/cloud/memcache/v1beta2/InstanceName.java
+++ b/java-memcache/proto-google-cloud-memcache-v1beta2/src/main/java/com/google/cloud/memcache/v1beta2/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-memcache/proto-google-cloud-memcache-v1beta2/src/main/java/com/google/cloud/memcache/v1beta2/LocationName.java b/java-memcache/proto-google-cloud-memcache-v1beta2/src/main/java/com/google/cloud/memcache/v1beta2/LocationName.java
index 9e300e5f6ced..de112df8d641 100644
--- a/java-memcache/proto-google-cloud-memcache-v1beta2/src/main/java/com/google/cloud/memcache/v1beta2/LocationName.java
+++ b/java-memcache/proto-google-cloud-memcache-v1beta2/src/main/java/com/google/cloud/memcache/v1beta2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/MigrationCenterClient.java b/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/MigrationCenterClient.java
index cbb353b200ce..3e7530ab7701 100644
--- a/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/MigrationCenterClient.java
+++ b/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/MigrationCenterClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1085,6 +1086,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MigrationCenterClient implements BackgroundResource {
   private final MigrationCenterSettings settings;
diff --git a/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/MigrationCenterSettings.java b/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/MigrationCenterSettings.java
index f818d57e3226..ef4fbd5d62ca 100644
--- a/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/MigrationCenterSettings.java
+++ b/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/MigrationCenterSettings.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -128,6 +129,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MigrationCenterSettings extends ClientSettings<MigrationCenterSettings> {
 
diff --git a/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/GrpcMigrationCenterCallableFactory.java b/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/GrpcMigrationCenterCallableFactory.java
index c86cf05953b6..1d93b7d5e67c 100644
--- a/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/GrpcMigrationCenterCallableFactory.java
+++ b/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/GrpcMigrationCenterCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMigrationCenterCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/GrpcMigrationCenterStub.java b/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/GrpcMigrationCenterStub.java
index 5ddca0879c1d..64a51a5cd934 100644
--- a/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/GrpcMigrationCenterStub.java
+++ b/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/GrpcMigrationCenterStub.java
@@ -118,6 +118,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMigrationCenterStub extends MigrationCenterStub {
   private static final MethodDescriptor<ListAssetsRequest, ListAssetsResponse>
diff --git a/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/HttpJsonMigrationCenterCallableFactory.java b/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/HttpJsonMigrationCenterCallableFactory.java
index f5eecaefcbf7..4d8d4c46bd01 100644
--- a/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/HttpJsonMigrationCenterCallableFactory.java
+++ b/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/HttpJsonMigrationCenterCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMigrationCenterCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/HttpJsonMigrationCenterStub.java b/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/HttpJsonMigrationCenterStub.java
index f400c20ebb99..26eec3b7c118 100644
--- a/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/HttpJsonMigrationCenterStub.java
+++ b/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/HttpJsonMigrationCenterStub.java
@@ -129,6 +129,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -136,6 +137,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMigrationCenterStub extends MigrationCenterStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/MigrationCenterStub.java b/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/MigrationCenterStub.java
index 61b377b36619..c823c02d5d20 100644
--- a/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/MigrationCenterStub.java
+++ b/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/MigrationCenterStub.java
@@ -109,6 +109,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MigrationCenterStub implements BackgroundResource {
 
diff --git a/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/MigrationCenterStubSettings.java b/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/MigrationCenterStubSettings.java
index 2bbb77e46299..828b582d79a4 100644
--- a/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/MigrationCenterStubSettings.java
+++ b/java-migrationcenter/google-cloud-migrationcenter/src/main/java/com/google/cloud/migrationcenter/v1/stub/MigrationCenterStubSettings.java
@@ -143,6 +143,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -221,6 +222,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MigrationCenterStubSettings extends StubSettings<MigrationCenterStubSettings> {
diff --git a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/AssetName.java b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/AssetName.java
index d1fa6f0cae11..eb0888f373c5 100644
--- a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/AssetName.java
+++ b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/AssetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AssetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ASSET =
diff --git a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ErrorFrameName.java b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ErrorFrameName.java
index e455602e775a..85306d51de9d 100644
--- a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ErrorFrameName.java
+++ b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ErrorFrameName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ErrorFrameName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SOURCE_ERROR_FRAME =
diff --git a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/GroupName.java b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/GroupName.java
index be3152bbdf46..60d26837b4b3 100644
--- a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/GroupName.java
+++ b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/GroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GROUP =
diff --git a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ImportDataFileName.java b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ImportDataFileName.java
index a9a072f27c0b..479f8001954a 100644
--- a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ImportDataFileName.java
+++ b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ImportDataFileName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ImportDataFileName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_IMPORT_JOB_IMPORT_DATA_FILE =
diff --git a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ImportJobName.java b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ImportJobName.java
index 09a1f8454c0b..5a373e2e3801 100644
--- a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ImportJobName.java
+++ b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ImportJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ImportJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_IMPORT_JOB =
diff --git a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/LocationName.java b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/LocationName.java
index b583333c18cf..6fb1474497c1 100644
--- a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/LocationName.java
+++ b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/PreferenceSetName.java b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/PreferenceSetName.java
index 99f9354983d0..41f464bc906a 100644
--- a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/PreferenceSetName.java
+++ b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/PreferenceSetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PreferenceSetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PREFERENCE_SET =
diff --git a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ReportConfigName.java b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ReportConfigName.java
index a41243190d22..9db2e760a1a8 100644
--- a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ReportConfigName.java
+++ b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ReportConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReportConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPORT_CONFIG =
diff --git a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ReportName.java b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ReportName.java
index 137dccd1962b..102c03a7e45d 100644
--- a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ReportName.java
+++ b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/ReportName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReportName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPORT_CONFIG_REPORT =
diff --git a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/SettingsName.java b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/SettingsName.java
index 903974f57c93..9e6caf64cd7b 100644
--- a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/SettingsName.java
+++ b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/SettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SettingsName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/SourceName.java b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/SourceName.java
index e32c10919f2b..c4f4c33fe909 100644
--- a/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/SourceName.java
+++ b/java-migrationcenter/proto-google-cloud-migrationcenter-v1/src/main/java/com/google/cloud/migrationcenter/v1/SourceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SourceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SOURCE =
diff --git a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/ModelArmorClient.java b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/ModelArmorClient.java
index bc67510e819f..00aee1eac9c1 100644
--- a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/ModelArmorClient.java
+++ b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/ModelArmorClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -331,6 +332,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelArmorClient implements BackgroundResource {
   private final ModelArmorSettings settings;
diff --git a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/ModelArmorSettings.java b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/ModelArmorSettings.java
index baa30110c16e..b5023635fa87 100644
--- a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/ModelArmorSettings.java
+++ b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/ModelArmorSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelArmorSettings extends ClientSettings<ModelArmorSettings> {
 
diff --git a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/GrpcModelArmorCallableFactory.java b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/GrpcModelArmorCallableFactory.java
index 42757c4c2149..490e35470db5 100644
--- a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/GrpcModelArmorCallableFactory.java
+++ b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/GrpcModelArmorCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcModelArmorCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/GrpcModelArmorStub.java b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/GrpcModelArmorStub.java
index 2160b5aff1b9..2c75fab15af4 100644
--- a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/GrpcModelArmorStub.java
+++ b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/GrpcModelArmorStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcModelArmorStub extends ModelArmorStub {
   private static final MethodDescriptor<ListTemplatesRequest, ListTemplatesResponse>
diff --git a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/HttpJsonModelArmorCallableFactory.java b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/HttpJsonModelArmorCallableFactory.java
index 7d4f75117be7..eab82a3ddae9 100644
--- a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/HttpJsonModelArmorCallableFactory.java
+++ b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/HttpJsonModelArmorCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonModelArmorCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/HttpJsonModelArmorStub.java b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/HttpJsonModelArmorStub.java
index b22efdf7f8ca..88ad7dda6912 100644
--- a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/HttpJsonModelArmorStub.java
+++ b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/HttpJsonModelArmorStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonModelArmorStub extends ModelArmorStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/ModelArmorStub.java b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/ModelArmorStub.java
index d4fc8ce7ee46..02ee2180a600 100644
--- a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/ModelArmorStub.java
+++ b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/ModelArmorStub.java
@@ -42,6 +42,7 @@
 import com.google.cloud.modelarmor.v1.UpdateTemplateRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ModelArmorStub implements BackgroundResource {
 
diff --git a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/ModelArmorStubSettings.java b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/ModelArmorStubSettings.java
index 850362fd6be4..3affc8943f2b 100644
--- a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/ModelArmorStubSettings.java
+++ b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1/stub/ModelArmorStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ModelArmorStubSettings extends StubSettings<ModelArmorStubSettings> {
diff --git a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/ModelArmorClient.java b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/ModelArmorClient.java
index 99afcd1956cf..87a829c97c76 100644
--- a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/ModelArmorClient.java
+++ b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/ModelArmorClient.java
@@ -39,6 +39,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -334,6 +335,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ModelArmorClient implements BackgroundResource {
diff --git a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/ModelArmorSettings.java b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/ModelArmorSettings.java
index a09d6203077c..3911eb49bb38 100644
--- a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/ModelArmorSettings.java
+++ b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/ModelArmorSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ModelArmorSettings extends ClientSettings<ModelArmorSettings> {
diff --git a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/GrpcModelArmorCallableFactory.java b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/GrpcModelArmorCallableFactory.java
index 6e9a77185e04..6a8ce1d4b0ac 100644
--- a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/GrpcModelArmorCallableFactory.java
+++ b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/GrpcModelArmorCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcModelArmorCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/GrpcModelArmorStub.java b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/GrpcModelArmorStub.java
index f60fc7fb6d08..dd7a6ef12a4b 100644
--- a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/GrpcModelArmorStub.java
+++ b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/GrpcModelArmorStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcModelArmorStub extends ModelArmorStub {
diff --git a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/HttpJsonModelArmorCallableFactory.java b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/HttpJsonModelArmorCallableFactory.java
index 6062b8c24b9c..9e5dcdaf5088 100644
--- a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/HttpJsonModelArmorCallableFactory.java
+++ b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/HttpJsonModelArmorCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonModelArmorCallableFactory
diff --git a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/HttpJsonModelArmorStub.java b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/HttpJsonModelArmorStub.java
index 2d1861047a6a..36130e0d45a7 100644
--- a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/HttpJsonModelArmorStub.java
+++ b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/HttpJsonModelArmorStub.java
@@ -60,6 +60,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonModelArmorStub extends ModelArmorStub {
diff --git a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/ModelArmorStub.java b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/ModelArmorStub.java
index fa913ef03a4f..86e4d3005bea 100644
--- a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/ModelArmorStub.java
+++ b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/ModelArmorStub.java
@@ -43,6 +43,7 @@
 import com.google.cloud.modelarmor.v1beta.UpdateTemplateRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ModelArmorStub implements BackgroundResource {
diff --git a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/ModelArmorStubSettings.java b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/ModelArmorStubSettings.java
index a609e656c3b6..0732dd636ab6 100644
--- a/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/ModelArmorStubSettings.java
+++ b/java-modelarmor/google-cloud-modelarmor/src/main/java/com/google/cloud/modelarmor/v1beta/stub/ModelArmorStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-modelarmor/proto-google-cloud-modelarmor-v1/src/main/java/com/google/cloud/modelarmor/v1/FloorSettingName.java b/java-modelarmor/proto-google-cloud-modelarmor-v1/src/main/java/com/google/cloud/modelarmor/v1/FloorSettingName.java
index 2d2db060c06d..e101b823c0da 100644
--- a/java-modelarmor/proto-google-cloud-modelarmor-v1/src/main/java/com/google/cloud/modelarmor/v1/FloorSettingName.java
+++ b/java-modelarmor/proto-google-cloud-modelarmor-v1/src/main/java/com/google/cloud/modelarmor/v1/FloorSettingName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FloorSettingName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-modelarmor/proto-google-cloud-modelarmor-v1/src/main/java/com/google/cloud/modelarmor/v1/LocationName.java b/java-modelarmor/proto-google-cloud-modelarmor-v1/src/main/java/com/google/cloud/modelarmor/v1/LocationName.java
index 85775c9215ab..429036e887eb 100644
--- a/java-modelarmor/proto-google-cloud-modelarmor-v1/src/main/java/com/google/cloud/modelarmor/v1/LocationName.java
+++ b/java-modelarmor/proto-google-cloud-modelarmor-v1/src/main/java/com/google/cloud/modelarmor/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-modelarmor/proto-google-cloud-modelarmor-v1/src/main/java/com/google/cloud/modelarmor/v1/TemplateName.java b/java-modelarmor/proto-google-cloud-modelarmor-v1/src/main/java/com/google/cloud/modelarmor/v1/TemplateName.java
index 137867e8f15d..559bec46b3f1 100644
--- a/java-modelarmor/proto-google-cloud-modelarmor-v1/src/main/java/com/google/cloud/modelarmor/v1/TemplateName.java
+++ b/java-modelarmor/proto-google-cloud-modelarmor-v1/src/main/java/com/google/cloud/modelarmor/v1/TemplateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TemplateName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TEMPLATE =
diff --git a/java-modelarmor/proto-google-cloud-modelarmor-v1beta/src/main/java/com/google/cloud/modelarmor/v1beta/FloorSettingName.java b/java-modelarmor/proto-google-cloud-modelarmor-v1beta/src/main/java/com/google/cloud/modelarmor/v1beta/FloorSettingName.java
index 0ba508603275..41c3b719b1f4 100644
--- a/java-modelarmor/proto-google-cloud-modelarmor-v1beta/src/main/java/com/google/cloud/modelarmor/v1beta/FloorSettingName.java
+++ b/java-modelarmor/proto-google-cloud-modelarmor-v1beta/src/main/java/com/google/cloud/modelarmor/v1beta/FloorSettingName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FloorSettingName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-modelarmor/proto-google-cloud-modelarmor-v1beta/src/main/java/com/google/cloud/modelarmor/v1beta/LocationName.java b/java-modelarmor/proto-google-cloud-modelarmor-v1beta/src/main/java/com/google/cloud/modelarmor/v1beta/LocationName.java
index 715769c3c29b..3a267baed759 100644
--- a/java-modelarmor/proto-google-cloud-modelarmor-v1beta/src/main/java/com/google/cloud/modelarmor/v1beta/LocationName.java
+++ b/java-modelarmor/proto-google-cloud-modelarmor-v1beta/src/main/java/com/google/cloud/modelarmor/v1beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-modelarmor/proto-google-cloud-modelarmor-v1beta/src/main/java/com/google/cloud/modelarmor/v1beta/TemplateName.java b/java-modelarmor/proto-google-cloud-modelarmor-v1beta/src/main/java/com/google/cloud/modelarmor/v1beta/TemplateName.java
index 1f6180213e2b..ad5f5b1ffae2 100644
--- a/java-modelarmor/proto-google-cloud-modelarmor-v1beta/src/main/java/com/google/cloud/modelarmor/v1beta/TemplateName.java
+++ b/java-modelarmor/proto-google-cloud-modelarmor-v1beta/src/main/java/com/google/cloud/modelarmor/v1beta/TemplateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TemplateName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TEMPLATE =
diff --git a/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/DashboardsServiceClient.java b/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/DashboardsServiceClient.java
index ae5914d6e4eb..37f0e3d3b487 100644
--- a/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/DashboardsServiceClient.java
+++ b/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/DashboardsServiceClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -227,6 +228,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DashboardsServiceClient implements BackgroundResource {
   private final DashboardsServiceSettings settings;
diff --git a/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/DashboardsServiceSettings.java b/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/DashboardsServiceSettings.java
index d5e7fa501a8d..bf7b382e536f 100644
--- a/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/DashboardsServiceSettings.java
+++ b/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/DashboardsServiceSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -93,6 +94,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DashboardsServiceSettings extends ClientSettings<DashboardsServiceSettings> {
 
diff --git a/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/DashboardsServiceStub.java b/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/DashboardsServiceStub.java
index 29cda40c9b7a..542385644f79 100644
--- a/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/DashboardsServiceStub.java
+++ b/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/DashboardsServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.monitoring.dashboard.v1.UpdateDashboardRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DashboardsServiceStub implements BackgroundResource {
 
diff --git a/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/DashboardsServiceStubSettings.java b/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/DashboardsServiceStubSettings.java
index 3120a0fb207b..7983700bb983 100644
--- a/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/DashboardsServiceStubSettings.java
+++ b/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/DashboardsServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DashboardsServiceStubSettings extends StubSettings<DashboardsServiceStubSettings> {
diff --git a/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/GrpcDashboardsServiceCallableFactory.java b/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/GrpcDashboardsServiceCallableFactory.java
index 6732ffed04a2..e02f1f6e3a5e 100644
--- a/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/GrpcDashboardsServiceCallableFactory.java
+++ b/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/GrpcDashboardsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDashboardsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/GrpcDashboardsServiceStub.java b/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/GrpcDashboardsServiceStub.java
index 23dd875b0991..7d36a54e7c05 100644
--- a/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/GrpcDashboardsServiceStub.java
+++ b/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/GrpcDashboardsServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDashboardsServiceStub extends DashboardsServiceStub {
   private static final MethodDescriptor<CreateDashboardRequest, Dashboard>
diff --git a/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/HttpJsonDashboardsServiceCallableFactory.java b/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/HttpJsonDashboardsServiceCallableFactory.java
index bea29c6cd745..f71758e55cbe 100644
--- a/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/HttpJsonDashboardsServiceCallableFactory.java
+++ b/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/HttpJsonDashboardsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDashboardsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/HttpJsonDashboardsServiceStub.java b/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/HttpJsonDashboardsServiceStub.java
index 5a7382269ddd..f44cca55d102 100644
--- a/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/HttpJsonDashboardsServiceStub.java
+++ b/java-monitoring-dashboards/google-cloud-monitoring-dashboard/src/main/java/com/google/cloud/monitoring/dashboard/v1/stub/HttpJsonDashboardsServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDashboardsServiceStub extends DashboardsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-monitoring-dashboards/proto-google-cloud-monitoring-dashboard-v1/src/main/java/com/google/monitoring/dashboard/v1/DashboardName.java b/java-monitoring-dashboards/proto-google-cloud-monitoring-dashboard-v1/src/main/java/com/google/monitoring/dashboard/v1/DashboardName.java
index 84d789772b76..cfcd0488dfc1 100644
--- a/java-monitoring-dashboards/proto-google-cloud-monitoring-dashboard-v1/src/main/java/com/google/monitoring/dashboard/v1/DashboardName.java
+++ b/java-monitoring-dashboards/proto-google-cloud-monitoring-dashboard-v1/src/main/java/com/google/monitoring/dashboard/v1/DashboardName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DashboardName implements ResourceName {
   private static final PathTemplate PROJECT_DASHBOARD =
diff --git a/java-monitoring-dashboards/proto-google-cloud-monitoring-dashboard-v1/src/main/java/com/google/monitoring/dashboard/v1/ProjectName.java b/java-monitoring-dashboards/proto-google-cloud-monitoring-dashboard-v1/src/main/java/com/google/monitoring/dashboard/v1/ProjectName.java
index 3f0069d7f8d3..9a51ef006b88 100644
--- a/java-monitoring-dashboards/proto-google-cloud-monitoring-dashboard-v1/src/main/java/com/google/monitoring/dashboard/v1/ProjectName.java
+++ b/java-monitoring-dashboards/proto-google-cloud-monitoring-dashboard-v1/src/main/java/com/google/monitoring/dashboard/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/MetricsScopesClient.java b/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/MetricsScopesClient.java
index a31520540b75..19b0c500fcad 100644
--- a/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/MetricsScopesClient.java
+++ b/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/MetricsScopesClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -173,6 +174,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetricsScopesClient implements BackgroundResource {
   private final MetricsScopesSettings settings;
diff --git a/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/MetricsScopesSettings.java b/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/MetricsScopesSettings.java
index 4945b2de98f4..a6f8e2d5eb70 100644
--- a/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/MetricsScopesSettings.java
+++ b/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/MetricsScopesSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetricsScopesSettings extends ClientSettings<MetricsScopesSettings> {
 
diff --git a/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/stub/GrpcMetricsScopesCallableFactory.java b/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/stub/GrpcMetricsScopesCallableFactory.java
index 80489c967fd3..05dd77338299 100644
--- a/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/stub/GrpcMetricsScopesCallableFactory.java
+++ b/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/stub/GrpcMetricsScopesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMetricsScopesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/stub/GrpcMetricsScopesStub.java b/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/stub/GrpcMetricsScopesStub.java
index fa65e76545ca..d3e4486a798d 100644
--- a/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/stub/GrpcMetricsScopesStub.java
+++ b/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/stub/GrpcMetricsScopesStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMetricsScopesStub extends MetricsScopesStub {
   private static final MethodDescriptor<GetMetricsScopeRequest, MetricsScope>
diff --git a/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/stub/MetricsScopesStub.java b/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/stub/MetricsScopesStub.java
index b49b219ddf35..df01b41b105f 100644
--- a/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/stub/MetricsScopesStub.java
+++ b/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/stub/MetricsScopesStub.java
@@ -31,6 +31,7 @@
 import com.google.monitoring.metricsscope.v1.OperationMetadata;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MetricsScopesStub implements BackgroundResource {
 
diff --git a/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/stub/MetricsScopesStubSettings.java b/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/stub/MetricsScopesStubSettings.java
index 7b3aace09a85..3d57d9520ea8 100644
--- a/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/stub/MetricsScopesStubSettings.java
+++ b/java-monitoring-metricsscope/google-cloud-monitoring-metricsscope/src/main/java/com/google/monitoring/metricsscope/v1/stub/MetricsScopesStubSettings.java
@@ -54,6 +54,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MetricsScopesStubSettings extends StubSettings<MetricsScopesStubSettings> {
diff --git a/java-monitoring-metricsscope/proto-google-cloud-monitoring-metricsscope-v1/src/main/java/com/google/monitoring/metricsscope/v1/MetricsScopeName.java b/java-monitoring-metricsscope/proto-google-cloud-monitoring-metricsscope-v1/src/main/java/com/google/monitoring/metricsscope/v1/MetricsScopeName.java
index 75a6d7ac03fd..390fbd1bee14 100644
--- a/java-monitoring-metricsscope/proto-google-cloud-monitoring-metricsscope-v1/src/main/java/com/google/monitoring/metricsscope/v1/MetricsScopeName.java
+++ b/java-monitoring-metricsscope/proto-google-cloud-monitoring-metricsscope-v1/src/main/java/com/google/monitoring/metricsscope/v1/MetricsScopeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetricsScopeName implements ResourceName {
   private static final PathTemplate METRICS_SCOPE =
diff --git a/java-monitoring-metricsscope/proto-google-cloud-monitoring-metricsscope-v1/src/main/java/com/google/monitoring/metricsscope/v1/MonitoredProjectName.java b/java-monitoring-metricsscope/proto-google-cloud-monitoring-metricsscope-v1/src/main/java/com/google/monitoring/metricsscope/v1/MonitoredProjectName.java
index 8b56603ef411..363a24b69a6c 100644
--- a/java-monitoring-metricsscope/proto-google-cloud-monitoring-metricsscope-v1/src/main/java/com/google/monitoring/metricsscope/v1/MonitoredProjectName.java
+++ b/java-monitoring-metricsscope/proto-google-cloud-monitoring-metricsscope-v1/src/main/java/com/google/monitoring/metricsscope/v1/MonitoredProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MonitoredProjectName implements ResourceName {
   private static final PathTemplate METRICS_SCOPE_PROJECT =
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/AlertPolicyServiceClient.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/AlertPolicyServiceClient.java
index 02838163d842..c08a6920efce 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/AlertPolicyServiceClient.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/AlertPolicyServiceClient.java
@@ -44,6 +44,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -226,6 +227,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AlertPolicyServiceClient implements BackgroundResource {
   private final AlertPolicyServiceSettings settings;
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/AlertPolicyServiceSettings.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/AlertPolicyServiceSettings.java
index 0e731f98bc5f..f3dc7ea5e0d6 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/AlertPolicyServiceSettings.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/AlertPolicyServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AlertPolicyServiceSettings extends ClientSettings<AlertPolicyServiceSettings> {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/GroupServiceClient.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/GroupServiceClient.java
index c9a91ae587cc..7740d8ce001e 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/GroupServiceClient.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/GroupServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -244,6 +245,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GroupServiceClient implements BackgroundResource {
   private final GroupServiceSettings settings;
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/GroupServiceSettings.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/GroupServiceSettings.java
index 6e4875d9e7c8..360d3eb7b2e8 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/GroupServiceSettings.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/GroupServiceSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -93,6 +94,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GroupServiceSettings extends ClientSettings<GroupServiceSettings> {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/MetricServiceClient.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/MetricServiceClient.java
index c21cf1119135..aa0f067203bc 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/MetricServiceClient.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/MetricServiceClient.java
@@ -52,6 +52,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -309,6 +310,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetricServiceClient implements BackgroundResource {
   private final MetricServiceSettings settings;
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/MetricServiceSettings.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/MetricServiceSettings.java
index 91b862d747f2..1a782b0c7507 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/MetricServiceSettings.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/MetricServiceSettings.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetricServiceSettings extends ClientSettings<MetricServiceSettings> {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/NotificationChannelServiceClient.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/NotificationChannelServiceClient.java
index 8624b7b9f12e..15c5265f8751 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/NotificationChannelServiceClient.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/NotificationChannelServiceClient.java
@@ -53,6 +53,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -333,6 +334,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotificationChannelServiceClient implements BackgroundResource {
   private final NotificationChannelServiceSettings settings;
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/NotificationChannelServiceSettings.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/NotificationChannelServiceSettings.java
index 892879e85e59..0ba23336f04a 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/NotificationChannelServiceSettings.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/NotificationChannelServiceSettings.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotificationChannelServiceSettings
     extends ClientSettings<NotificationChannelServiceSettings> {
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/QueryServiceClient.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/QueryServiceClient.java
index 620bb0956cce..e456d192cf80 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/QueryServiceClient.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/QueryServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -130,6 +131,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QueryServiceClient implements BackgroundResource {
   private final QueryServiceSettings settings;
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/QueryServiceSettings.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/QueryServiceSettings.java
index 7f9686ec144f..b91c2bc48923 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/QueryServiceSettings.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/QueryServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QueryServiceSettings extends ClientSettings<QueryServiceSettings> {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/ServiceMonitoringServiceClient.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/ServiceMonitoringServiceClient.java
index 96c4e33bacc2..be35cd6a6027 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/ServiceMonitoringServiceClient.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/ServiceMonitoringServiceClient.java
@@ -51,6 +51,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -323,6 +324,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceMonitoringServiceClient implements BackgroundResource {
   private final ServiceMonitoringServiceSettings settings;
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/ServiceMonitoringServiceSettings.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/ServiceMonitoringServiceSettings.java
index 9d9817c61757..8d4afb555c97 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/ServiceMonitoringServiceSettings.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/ServiceMonitoringServiceSettings.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceMonitoringServiceSettings
     extends ClientSettings<ServiceMonitoringServiceSettings> {
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/SnoozeServiceClient.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/SnoozeServiceClient.java
index 344fd7c84502..31f8c835d127 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/SnoozeServiceClient.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/SnoozeServiceClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -190,6 +191,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SnoozeServiceClient implements BackgroundResource {
   private final SnoozeServiceSettings settings;
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/SnoozeServiceSettings.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/SnoozeServiceSettings.java
index 3a7f1c835bac..ea1459b26924 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/SnoozeServiceSettings.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/SnoozeServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SnoozeServiceSettings extends ClientSettings<SnoozeServiceSettings> {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/UptimeCheckServiceClient.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/UptimeCheckServiceClient.java
index 5ea536987fc9..78ece74a367f 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/UptimeCheckServiceClient.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/UptimeCheckServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -241,6 +242,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UptimeCheckServiceClient implements BackgroundResource {
   private final UptimeCheckServiceSettings settings;
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/UptimeCheckServiceSettings.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/UptimeCheckServiceSettings.java
index 9046b07782d1..1d80299607ae 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/UptimeCheckServiceSettings.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/UptimeCheckServiceSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -95,6 +96,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UptimeCheckServiceSettings extends ClientSettings<UptimeCheckServiceSettings> {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/AlertPolicyServiceStub.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/AlertPolicyServiceStub.java
index 3407efc66724..372d85b7775d 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/AlertPolicyServiceStub.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/AlertPolicyServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.monitoring.v3.UpdateAlertPolicyRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AlertPolicyServiceStub implements BackgroundResource {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/AlertPolicyServiceStubSettings.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/AlertPolicyServiceStubSettings.java
index a4f9590a5127..97f3f0a894a7 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/AlertPolicyServiceStubSettings.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/AlertPolicyServiceStubSettings.java
@@ -57,6 +57,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AlertPolicyServiceStubSettings extends StubSettings<AlertPolicyServiceStubSettings> {
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GroupServiceStub.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GroupServiceStub.java
index 8ac196b3c1e2..a41dc97227bd 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GroupServiceStub.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GroupServiceStub.java
@@ -32,6 +32,7 @@
 import com.google.monitoring.v3.UpdateGroupRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GroupServiceStub implements BackgroundResource {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GroupServiceStubSettings.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GroupServiceStubSettings.java
index 070a88438110..1017eea44bc1 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GroupServiceStubSettings.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GroupServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GroupServiceStubSettings extends StubSettings<GroupServiceStubSettings> {
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcAlertPolicyServiceCallableFactory.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcAlertPolicyServiceCallableFactory.java
index da0731bc8ae0..688bdee2d72d 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcAlertPolicyServiceCallableFactory.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcAlertPolicyServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAlertPolicyServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcAlertPolicyServiceStub.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcAlertPolicyServiceStub.java
index 90b5f7da59bc..4e6a72360189 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcAlertPolicyServiceStub.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcAlertPolicyServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAlertPolicyServiceStub extends AlertPolicyServiceStub {
   private static final MethodDescriptor<ListAlertPoliciesRequest, ListAlertPoliciesResponse>
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcGroupServiceCallableFactory.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcGroupServiceCallableFactory.java
index 4027daeb75ff..b19097c36497 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcGroupServiceCallableFactory.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcGroupServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGroupServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcGroupServiceStub.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcGroupServiceStub.java
index 762164808617..0ebab1aed528 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcGroupServiceStub.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcGroupServiceStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGroupServiceStub extends GroupServiceStub {
   private static final MethodDescriptor<ListGroupsRequest, ListGroupsResponse>
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcMetricServiceCallableFactory.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcMetricServiceCallableFactory.java
index fb199598b4b7..8d176960a8f9 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcMetricServiceCallableFactory.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcMetricServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMetricServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcMetricServiceStub.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcMetricServiceStub.java
index 4ed6d2488217..9ba6d0c1dcb2 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcMetricServiceStub.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcMetricServiceStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMetricServiceStub extends MetricServiceStub {
   private static final MethodDescriptor<
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcNotificationChannelServiceCallableFactory.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcNotificationChannelServiceCallableFactory.java
index 631de5fee1b3..f8f8579258ba 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcNotificationChannelServiceCallableFactory.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcNotificationChannelServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNotificationChannelServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcNotificationChannelServiceStub.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcNotificationChannelServiceStub.java
index e876b1677314..f07726b9a315 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcNotificationChannelServiceStub.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcNotificationChannelServiceStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNotificationChannelServiceStub extends NotificationChannelServiceStub {
   private static final MethodDescriptor<
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcQueryServiceCallableFactory.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcQueryServiceCallableFactory.java
index 73561857b7cb..16b27f554773 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcQueryServiceCallableFactory.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcQueryServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcQueryServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcQueryServiceStub.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcQueryServiceStub.java
index acc456f9168e..d8bf3025e32e 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcQueryServiceStub.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcQueryServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcQueryServiceStub extends QueryServiceStub {
   private static final MethodDescriptor<QueryTimeSeriesRequest, QueryTimeSeriesResponse>
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcServiceMonitoringServiceCallableFactory.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcServiceMonitoringServiceCallableFactory.java
index 77446769991a..a69efe4c1061 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcServiceMonitoringServiceCallableFactory.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcServiceMonitoringServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServiceMonitoringServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcServiceMonitoringServiceStub.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcServiceMonitoringServiceStub.java
index e0b574b39fdc..4b65db5e5486 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcServiceMonitoringServiceStub.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcServiceMonitoringServiceStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServiceMonitoringServiceStub extends ServiceMonitoringServiceStub {
   private static final MethodDescriptor<CreateServiceRequest, Service>
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcSnoozeServiceCallableFactory.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcSnoozeServiceCallableFactory.java
index c2d7d3c503b6..6777f507b48f 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcSnoozeServiceCallableFactory.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcSnoozeServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSnoozeServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcSnoozeServiceStub.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcSnoozeServiceStub.java
index 018efd3cac35..2907f5b91110 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcSnoozeServiceStub.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcSnoozeServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSnoozeServiceStub extends SnoozeServiceStub {
   private static final MethodDescriptor<CreateSnoozeRequest, Snooze> createSnoozeMethodDescriptor =
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcUptimeCheckServiceCallableFactory.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcUptimeCheckServiceCallableFactory.java
index 11ed6375eef8..78c333e8da52 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcUptimeCheckServiceCallableFactory.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcUptimeCheckServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcUptimeCheckServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcUptimeCheckServiceStub.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcUptimeCheckServiceStub.java
index e68d4caf8f4f..0f0c8a4ee70e 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcUptimeCheckServiceStub.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/GrpcUptimeCheckServiceStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcUptimeCheckServiceStub extends UptimeCheckServiceStub {
   private static final MethodDescriptor<
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/MetricServiceStub.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/MetricServiceStub.java
index c08205f65043..dba88aa60b72 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/MetricServiceStub.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/MetricServiceStub.java
@@ -37,6 +37,7 @@
 import com.google.monitoring.v3.ListTimeSeriesResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MetricServiceStub implements BackgroundResource {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/MetricServiceStubSettings.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/MetricServiceStubSettings.java
index 1389f56427e1..ea4e4a2d28d0 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/MetricServiceStubSettings.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/MetricServiceStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MetricServiceStubSettings extends StubSettings<MetricServiceStubSettings> {
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/NotificationChannelServiceStub.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/NotificationChannelServiceStub.java
index fdea4d174230..8e1a9ae7885f 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/NotificationChannelServiceStub.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/NotificationChannelServiceStub.java
@@ -38,6 +38,7 @@
 import com.google.monitoring.v3.VerifyNotificationChannelRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NotificationChannelServiceStub implements BackgroundResource {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/NotificationChannelServiceStubSettings.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/NotificationChannelServiceStubSettings.java
index 32ea1d88a577..58e33fb1b76e 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/NotificationChannelServiceStubSettings.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/NotificationChannelServiceStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NotificationChannelServiceStubSettings
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/QueryServiceStub.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/QueryServiceStub.java
index d2c50c7436a3..6f9a70ec6c90 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/QueryServiceStub.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/QueryServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.monitoring.v3.QueryTimeSeriesRequest;
 import com.google.monitoring.v3.QueryTimeSeriesResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class QueryServiceStub implements BackgroundResource {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/QueryServiceStubSettings.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/QueryServiceStubSettings.java
index fa9cbe8eafa7..84068831902c 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/QueryServiceStubSettings.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/QueryServiceStubSettings.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class QueryServiceStubSettings extends StubSettings<QueryServiceStubSettings> {
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/ServiceMonitoringServiceStub.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/ServiceMonitoringServiceStub.java
index a3f221a8cfa4..600fb0f57d63 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/ServiceMonitoringServiceStub.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/ServiceMonitoringServiceStub.java
@@ -37,6 +37,7 @@
 import com.google.monitoring.v3.UpdateServiceRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ServiceMonitoringServiceStub implements BackgroundResource {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/ServiceMonitoringServiceStubSettings.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/ServiceMonitoringServiceStubSettings.java
index ec80f38b6712..8bd8f382c6a4 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/ServiceMonitoringServiceStubSettings.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/ServiceMonitoringServiceStubSettings.java
@@ -65,6 +65,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ServiceMonitoringServiceStubSettings
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/SnoozeServiceStub.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/SnoozeServiceStub.java
index 6af21b1b0b2a..9d367bcdec75 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/SnoozeServiceStub.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/SnoozeServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.monitoring.v3.Snooze;
 import com.google.monitoring.v3.UpdateSnoozeRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SnoozeServiceStub implements BackgroundResource {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/SnoozeServiceStubSettings.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/SnoozeServiceStubSettings.java
index ece65ba5342b..8cab4bebbe6a 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/SnoozeServiceStubSettings.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/SnoozeServiceStubSettings.java
@@ -55,6 +55,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -106,6 +107,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SnoozeServiceStubSettings extends StubSettings<SnoozeServiceStubSettings> {
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/UptimeCheckServiceStub.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/UptimeCheckServiceStub.java
index e862b80b7f25..a9f7c432a130 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/UptimeCheckServiceStub.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/UptimeCheckServiceStub.java
@@ -32,6 +32,7 @@
 import com.google.monitoring.v3.UptimeCheckConfig;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class UptimeCheckServiceStub implements BackgroundResource {
 
diff --git a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/UptimeCheckServiceStubSettings.java b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/UptimeCheckServiceStubSettings.java
index 331379fac9c0..7c4b49726117 100644
--- a/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/UptimeCheckServiceStubSettings.java
+++ b/java-monitoring/google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/UptimeCheckServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class UptimeCheckServiceStubSettings extends StubSettings<UptimeCheckServiceStubSettings> {
diff --git a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/AlertPolicyName.java b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/AlertPolicyName.java
index dfe9788d667f..64e7d7274dc4 100644
--- a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/AlertPolicyName.java
+++ b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/AlertPolicyName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AlertPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_ALERT_POLICY =
diff --git a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/FolderName.java b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/FolderName.java
index cf3ed076b95c..1025f6df8f29 100644
--- a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/FolderName.java
+++ b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/FolderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderName implements ResourceName {
   private static final PathTemplate FOLDER =
diff --git a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/GroupName.java b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/GroupName.java
index 55ab7bb74474..072975308fdb 100644
--- a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/GroupName.java
+++ b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/GroupName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GroupName implements ResourceName {
   private static final PathTemplate PROJECT_GROUP =
diff --git a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/MetricDescriptorName.java b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/MetricDescriptorName.java
index 235667f1d708..b7e230c6acc0 100644
--- a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/MetricDescriptorName.java
+++ b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/MetricDescriptorName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetricDescriptorName implements ResourceName {
   private static final PathTemplate PROJECT_METRIC_DESCRIPTOR =
diff --git a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/MonitoredResourceDescriptorName.java b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/MonitoredResourceDescriptorName.java
index 1e410f6ee029..35e90d7474bd 100644
--- a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/MonitoredResourceDescriptorName.java
+++ b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/MonitoredResourceDescriptorName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MonitoredResourceDescriptorName implements ResourceName {
   private static final PathTemplate PROJECT_MONITORED_RESOURCE_DESCRIPTOR =
diff --git a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/NotificationChannelDescriptorName.java b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/NotificationChannelDescriptorName.java
index 38859c0d4347..6b2fc8b53865 100644
--- a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/NotificationChannelDescriptorName.java
+++ b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/NotificationChannelDescriptorName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotificationChannelDescriptorName implements ResourceName {
   private static final PathTemplate PROJECT_CHANNEL_DESCRIPTOR =
diff --git a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/NotificationChannelName.java b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/NotificationChannelName.java
index 94ccc748a536..194ae281a03c 100644
--- a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/NotificationChannelName.java
+++ b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/NotificationChannelName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotificationChannelName implements ResourceName {
   private static final PathTemplate PROJECT_NOTIFICATION_CHANNEL =
diff --git a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/OrganizationName.java b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/OrganizationName.java
index f79f1ccc062c..76a0efeb409b 100644
--- a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/OrganizationName.java
+++ b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/ProjectName.java b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/ProjectName.java
index fe22fb904428..7d236d591868 100644
--- a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/ProjectName.java
+++ b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/ServiceLevelObjectiveName.java b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/ServiceLevelObjectiveName.java
index bdf66685d6d2..b718f8309c41 100644
--- a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/ServiceLevelObjectiveName.java
+++ b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/ServiceLevelObjectiveName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceLevelObjectiveName implements ResourceName {
   private static final PathTemplate PROJECT_SERVICE_SERVICE_LEVEL_OBJECTIVE =
diff --git a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/ServiceName.java b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/ServiceName.java
index 6736bd6342e9..66ea8f55b3c1 100644
--- a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/ServiceName.java
+++ b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/ServiceName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceName implements ResourceName {
   private static final PathTemplate PROJECT_SERVICE =
diff --git a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/SnoozeName.java b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/SnoozeName.java
index 493417510d43..7750efdad883 100644
--- a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/SnoozeName.java
+++ b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/SnoozeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SnoozeName implements ResourceName {
   private static final PathTemplate PROJECT_SNOOZE =
diff --git a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/TimeSeriesName.java b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/TimeSeriesName.java
index 9f86530c985d..2614268958f6 100644
--- a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/TimeSeriesName.java
+++ b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/TimeSeriesName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TimeSeriesName implements ResourceName {
   private static final PathTemplate PROJECT_TIME_SERIES =
diff --git a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/UptimeCheckConfigName.java b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/UptimeCheckConfigName.java
index 982d707a22bf..3eb7864e6533 100644
--- a/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/UptimeCheckConfigName.java
+++ b/java-monitoring/proto-google-cloud-monitoring-v3/src/main/java/com/google/monitoring/v3/UptimeCheckConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UptimeCheckConfigName implements ResourceName {
   private static final PathTemplate PROJECT_UPTIME_CHECK_CONFIG =
diff --git a/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/NetAppClient.java b/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/NetAppClient.java
index af2dd0f7af96..7b7fa0ef2fdb 100644
--- a/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/NetAppClient.java
+++ b/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/NetAppClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1469,6 +1470,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetAppClient implements BackgroundResource {
   private final NetAppSettings settings;
diff --git a/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/NetAppSettings.java b/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/NetAppSettings.java
index 208bb306fc0c..d32df455f8ca 100644
--- a/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/NetAppSettings.java
+++ b/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/NetAppSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetAppSettings extends ClientSettings<NetAppSettings> {
 
diff --git a/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/GrpcNetAppCallableFactory.java b/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/GrpcNetAppCallableFactory.java
index ed899e29f2d8..7b033668dfad 100644
--- a/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/GrpcNetAppCallableFactory.java
+++ b/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/GrpcNetAppCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNetAppCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/GrpcNetAppStub.java b/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/GrpcNetAppStub.java
index fbdb674e96d3..228125f2ae59 100644
--- a/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/GrpcNetAppStub.java
+++ b/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/GrpcNetAppStub.java
@@ -149,6 +149,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNetAppStub extends NetAppStub {
   private static final MethodDescriptor<ListStoragePoolsRequest, ListStoragePoolsResponse>
diff --git a/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/HttpJsonNetAppCallableFactory.java b/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/HttpJsonNetAppCallableFactory.java
index 20863cbeedbc..0342d4242697 100644
--- a/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/HttpJsonNetAppCallableFactory.java
+++ b/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/HttpJsonNetAppCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNetAppCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/HttpJsonNetAppStub.java b/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/HttpJsonNetAppStub.java
index 761aeb2412a3..fcb08fab7682 100644
--- a/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/HttpJsonNetAppStub.java
+++ b/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/HttpJsonNetAppStub.java
@@ -160,6 +160,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNetAppStub extends NetAppStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/NetAppStub.java b/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/NetAppStub.java
index a0f3e5549dd0..63b90c542aae 100644
--- a/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/NetAppStub.java
+++ b/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/NetAppStub.java
@@ -140,6 +140,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NetAppStub implements BackgroundResource {
 
diff --git a/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/NetAppStubSettings.java b/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/NetAppStubSettings.java
index ca128908f4a8..5ffb409a3a1c 100644
--- a/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/NetAppStubSettings.java
+++ b/java-netapp/google-cloud-netapp/src/main/java/com/google/cloud/netapp/v1/stub/NetAppStubSettings.java
@@ -174,6 +174,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -249,6 +250,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NetAppStubSettings extends StubSettings<NetAppStubSettings> {
diff --git a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/ActiveDirectoryName.java b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/ActiveDirectoryName.java
index a3d91c67c076..fb10b82db81d 100644
--- a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/ActiveDirectoryName.java
+++ b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/ActiveDirectoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ActiveDirectoryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ACTIVE_DIRECTORY =
diff --git a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/BackupName.java b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/BackupName.java
index 175562944308..98002854a883 100644
--- a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/BackupName.java
+++ b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/BackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP_VAULT_BACKUP =
diff --git a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/BackupPolicyName.java b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/BackupPolicyName.java
index 2aab98f93531..e3a02376245a 100644
--- a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/BackupPolicyName.java
+++ b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/BackupPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP_POLICY =
diff --git a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/BackupVaultName.java b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/BackupVaultName.java
index 9285241f6696..9e19b52da8c4 100644
--- a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/BackupVaultName.java
+++ b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/BackupVaultName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupVaultName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP_VAULT =
diff --git a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/HostGroupName.java b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/HostGroupName.java
index b3579d044c19..4203e6191a2e 100644
--- a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/HostGroupName.java
+++ b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/HostGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HostGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_HOST_GROUP =
diff --git a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/KmsConfigName.java b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/KmsConfigName.java
index 17567d95f096..6033dbbac804 100644
--- a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/KmsConfigName.java
+++ b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/KmsConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class KmsConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_KMS_CONFIG =
diff --git a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/LocationName.java b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/LocationName.java
index 18926123d806..d106ff334387 100644
--- a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/LocationName.java
+++ b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/QuotaRuleName.java b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/QuotaRuleName.java
index 116fafaae522..ea5dec9f7468 100644
--- a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/QuotaRuleName.java
+++ b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/QuotaRuleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QuotaRuleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_VOLUME_QUOTA_RULE =
diff --git a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/ReplicationName.java b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/ReplicationName.java
index cc814a5f728d..90b443bc49af 100644
--- a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/ReplicationName.java
+++ b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/ReplicationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReplicationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_VOLUME_REPLICATION =
diff --git a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/SnapshotName.java b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/SnapshotName.java
index 98d03f0e3dba..30e38833d766 100644
--- a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/SnapshotName.java
+++ b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/SnapshotName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SnapshotName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_VOLUME_SNAPSHOT =
diff --git a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/StoragePoolName.java b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/StoragePoolName.java
index 0b60af55f061..92d810376ee7 100644
--- a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/StoragePoolName.java
+++ b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/StoragePoolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StoragePoolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_STORAGE_POOL =
diff --git a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/VolumeName.java b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/VolumeName.java
index f68e7a7b12f7..6557eb7d1aa9 100644
--- a/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/VolumeName.java
+++ b/java-netapp/proto-google-cloud-netapp-v1/src/main/java/com/google/cloud/netapp/v1/VolumeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VolumeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_VOLUME =
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/OrganizationVpcFlowLogsServiceClient.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/OrganizationVpcFlowLogsServiceClient.java
index 1bc05b7b42bb..e4b836fe2f38 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/OrganizationVpcFlowLogsServiceClient.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/OrganizationVpcFlowLogsServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -320,6 +321,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationVpcFlowLogsServiceClient implements BackgroundResource {
   private final OrganizationVpcFlowLogsServiceSettings settings;
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/OrganizationVpcFlowLogsServiceSettings.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/OrganizationVpcFlowLogsServiceSettings.java
index 4ae7581c8c23..35ddc01ddeed 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/OrganizationVpcFlowLogsServiceSettings.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/OrganizationVpcFlowLogsServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationVpcFlowLogsServiceSettings
     extends ClientSettings<OrganizationVpcFlowLogsServiceSettings> {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/ReachabilityServiceClient.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/ReachabilityServiceClient.java
index 08acd2865886..a54596df8146 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/ReachabilityServiceClient.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/ReachabilityServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -336,6 +337,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReachabilityServiceClient implements BackgroundResource {
   private final ReachabilityServiceSettings settings;
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/ReachabilityServiceSettings.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/ReachabilityServiceSettings.java
index 8c4eb32dec40..21ab9e90465c 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/ReachabilityServiceSettings.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/ReachabilityServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReachabilityServiceSettings extends ClientSettings<ReachabilityServiceSettings> {
 
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/VpcFlowLogsServiceClient.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/VpcFlowLogsServiceClient.java
index c9d19a13663f..98f5615995fa 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/VpcFlowLogsServiceClient.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/VpcFlowLogsServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -349,6 +350,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VpcFlowLogsServiceClient implements BackgroundResource {
   private final VpcFlowLogsServiceSettings settings;
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/VpcFlowLogsServiceSettings.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/VpcFlowLogsServiceSettings.java
index 7f925c24e27f..0e35098aed74 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/VpcFlowLogsServiceSettings.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/VpcFlowLogsServiceSettings.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -128,6 +129,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VpcFlowLogsServiceSettings extends ClientSettings<VpcFlowLogsServiceSettings> {
 
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcOrganizationVpcFlowLogsServiceCallableFactory.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcOrganizationVpcFlowLogsServiceCallableFactory.java
index fa09158e702c..203c8397e0d3 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcOrganizationVpcFlowLogsServiceCallableFactory.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcOrganizationVpcFlowLogsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOrganizationVpcFlowLogsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcOrganizationVpcFlowLogsServiceStub.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcOrganizationVpcFlowLogsServiceStub.java
index d522dd4d3f04..c3415ddc8320 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcOrganizationVpcFlowLogsServiceStub.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcOrganizationVpcFlowLogsServiceStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOrganizationVpcFlowLogsServiceStub extends OrganizationVpcFlowLogsServiceStub {
   private static final MethodDescriptor<
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcReachabilityServiceCallableFactory.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcReachabilityServiceCallableFactory.java
index f3e15e04c1a0..eb710a83486b 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcReachabilityServiceCallableFactory.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcReachabilityServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcReachabilityServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcReachabilityServiceStub.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcReachabilityServiceStub.java
index b7c25766c768..547eeb0f445d 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcReachabilityServiceStub.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcReachabilityServiceStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcReachabilityServiceStub extends ReachabilityServiceStub {
   private static final MethodDescriptor<ListConnectivityTestsRequest, ListConnectivityTestsResponse>
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcVpcFlowLogsServiceCallableFactory.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcVpcFlowLogsServiceCallableFactory.java
index 7ed5fed46a6b..22cd6d2ee939 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcVpcFlowLogsServiceCallableFactory.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcVpcFlowLogsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVpcFlowLogsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcVpcFlowLogsServiceStub.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcVpcFlowLogsServiceStub.java
index 175e1d8330bb..27c7973c751d 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcVpcFlowLogsServiceStub.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/GrpcVpcFlowLogsServiceStub.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVpcFlowLogsServiceStub extends VpcFlowLogsServiceStub {
   private static final MethodDescriptor<
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonOrganizationVpcFlowLogsServiceCallableFactory.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonOrganizationVpcFlowLogsServiceCallableFactory.java
index ebd60969facb..b4a175898bb2 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonOrganizationVpcFlowLogsServiceCallableFactory.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonOrganizationVpcFlowLogsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOrganizationVpcFlowLogsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonOrganizationVpcFlowLogsServiceStub.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonOrganizationVpcFlowLogsServiceStub.java
index cb1eeffee234..d14191d8a2d1 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonOrganizationVpcFlowLogsServiceStub.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonOrganizationVpcFlowLogsServiceStub.java
@@ -63,6 +63,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOrganizationVpcFlowLogsServiceStub extends OrganizationVpcFlowLogsServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonReachabilityServiceCallableFactory.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonReachabilityServiceCallableFactory.java
index 07c64b10ba25..f48ce3e6fbd2 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonReachabilityServiceCallableFactory.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonReachabilityServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonReachabilityServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonReachabilityServiceStub.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonReachabilityServiceStub.java
index 38171350d363..8811ca6246af 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonReachabilityServiceStub.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonReachabilityServiceStub.java
@@ -64,6 +64,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonReachabilityServiceStub extends ReachabilityServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonVpcFlowLogsServiceCallableFactory.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonVpcFlowLogsServiceCallableFactory.java
index 42b1d1ca134a..1b8b3221e858 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonVpcFlowLogsServiceCallableFactory.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonVpcFlowLogsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVpcFlowLogsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonVpcFlowLogsServiceStub.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonVpcFlowLogsServiceStub.java
index dc20401add83..8a537d430691 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonVpcFlowLogsServiceStub.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/HttpJsonVpcFlowLogsServiceStub.java
@@ -69,6 +69,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -76,6 +77,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVpcFlowLogsServiceStub extends VpcFlowLogsServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/OrganizationVpcFlowLogsServiceStub.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/OrganizationVpcFlowLogsServiceStub.java
index bc77a73d96c8..f55a210ebfa1 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/OrganizationVpcFlowLogsServiceStub.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/OrganizationVpcFlowLogsServiceStub.java
@@ -43,6 +43,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class OrganizationVpcFlowLogsServiceStub implements BackgroundResource {
 
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/OrganizationVpcFlowLogsServiceStubSettings.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/OrganizationVpcFlowLogsServiceStubSettings.java
index d8cfb893c863..6282ae557b3d 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/OrganizationVpcFlowLogsServiceStubSettings.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/OrganizationVpcFlowLogsServiceStubSettings.java
@@ -77,6 +77,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -158,6 +159,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class OrganizationVpcFlowLogsServiceStubSettings
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/ReachabilityServiceStub.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/ReachabilityServiceStub.java
index 1eb1b4b7fc8e..1b122ff544df 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/ReachabilityServiceStub.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/ReachabilityServiceStub.java
@@ -44,6 +44,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ReachabilityServiceStub implements BackgroundResource {
 
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/ReachabilityServiceStubSettings.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/ReachabilityServiceStubSettings.java
index 7b972fd583cd..145a1db89338 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/ReachabilityServiceStubSettings.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/ReachabilityServiceStubSettings.java
@@ -78,6 +78,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -157,6 +158,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ReachabilityServiceStubSettings extends StubSettings<ReachabilityServiceStubSettings> {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/VpcFlowLogsServiceStub.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/VpcFlowLogsServiceStub.java
index a6e8dd669bd3..a3c12be7880d 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/VpcFlowLogsServiceStub.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/VpcFlowLogsServiceStub.java
@@ -49,6 +49,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class VpcFlowLogsServiceStub implements BackgroundResource {
 
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/VpcFlowLogsServiceStubSettings.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/VpcFlowLogsServiceStubSettings.java
index 045af44b8615..ffbb31ad23a9 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/VpcFlowLogsServiceStubSettings.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1/stub/VpcFlowLogsServiceStubSettings.java
@@ -84,6 +84,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -163,6 +164,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class VpcFlowLogsServiceStubSettings extends StubSettings<VpcFlowLogsServiceStubSettings> {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/OrganizationVpcFlowLogsServiceClient.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/OrganizationVpcFlowLogsServiceClient.java
index 0369ba06f2c2..6faec1437d63 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/OrganizationVpcFlowLogsServiceClient.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/OrganizationVpcFlowLogsServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -320,6 +321,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class OrganizationVpcFlowLogsServiceClient implements BackgroundResource {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/OrganizationVpcFlowLogsServiceSettings.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/OrganizationVpcFlowLogsServiceSettings.java
index b5d67aa17728..e4c84b6d13c8 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/OrganizationVpcFlowLogsServiceSettings.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/OrganizationVpcFlowLogsServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class OrganizationVpcFlowLogsServiceSettings
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/ReachabilityServiceClient.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/ReachabilityServiceClient.java
index 338b33344be0..beb740e42faf 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/ReachabilityServiceClient.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/ReachabilityServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -314,6 +315,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ReachabilityServiceClient implements BackgroundResource {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/ReachabilityServiceSettings.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/ReachabilityServiceSettings.java
index 2c3d05d63843..aacc27cc4a3f 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/ReachabilityServiceSettings.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/ReachabilityServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ReachabilityServiceSettings extends ClientSettings<ReachabilityServiceSettings> {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/VpcFlowLogsServiceClient.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/VpcFlowLogsServiceClient.java
index c96a77e2db23..c49b2325e955 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/VpcFlowLogsServiceClient.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/VpcFlowLogsServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -349,6 +350,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VpcFlowLogsServiceClient implements BackgroundResource {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/VpcFlowLogsServiceSettings.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/VpcFlowLogsServiceSettings.java
index d8999f22178f..75282f15b2af 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/VpcFlowLogsServiceSettings.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/VpcFlowLogsServiceSettings.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -128,6 +129,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VpcFlowLogsServiceSettings extends ClientSettings<VpcFlowLogsServiceSettings> {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcOrganizationVpcFlowLogsServiceCallableFactory.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcOrganizationVpcFlowLogsServiceCallableFactory.java
index e7f5871d511d..a4e9275ef46e 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcOrganizationVpcFlowLogsServiceCallableFactory.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcOrganizationVpcFlowLogsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcOrganizationVpcFlowLogsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcOrganizationVpcFlowLogsServiceStub.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcOrganizationVpcFlowLogsServiceStub.java
index 3cf23c759d7a..e1819b8dbdc5 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcOrganizationVpcFlowLogsServiceStub.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcOrganizationVpcFlowLogsServiceStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcOrganizationVpcFlowLogsServiceStub extends OrganizationVpcFlowLogsServiceStub {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcReachabilityServiceCallableFactory.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcReachabilityServiceCallableFactory.java
index df130b85f396..4426a1ce8f11 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcReachabilityServiceCallableFactory.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcReachabilityServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcReachabilityServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcReachabilityServiceStub.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcReachabilityServiceStub.java
index d2971a6037d8..9efa5f998fd2 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcReachabilityServiceStub.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcReachabilityServiceStub.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcReachabilityServiceStub extends ReachabilityServiceStub {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcVpcFlowLogsServiceCallableFactory.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcVpcFlowLogsServiceCallableFactory.java
index 8ec20a9f924b..28fd56bb41dd 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcVpcFlowLogsServiceCallableFactory.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcVpcFlowLogsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVpcFlowLogsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcVpcFlowLogsServiceStub.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcVpcFlowLogsServiceStub.java
index 59c1ca3cadc5..a903c3f89931 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcVpcFlowLogsServiceStub.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/GrpcVpcFlowLogsServiceStub.java
@@ -59,6 +59,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVpcFlowLogsServiceStub extends VpcFlowLogsServiceStub {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonOrganizationVpcFlowLogsServiceCallableFactory.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonOrganizationVpcFlowLogsServiceCallableFactory.java
index 94404e5cb947..0000a5c34d93 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonOrganizationVpcFlowLogsServiceCallableFactory.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonOrganizationVpcFlowLogsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonOrganizationVpcFlowLogsServiceCallableFactory
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonOrganizationVpcFlowLogsServiceStub.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonOrganizationVpcFlowLogsServiceStub.java
index e8ec677c3452..e4d73e915659 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonOrganizationVpcFlowLogsServiceStub.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonOrganizationVpcFlowLogsServiceStub.java
@@ -64,6 +64,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonOrganizationVpcFlowLogsServiceStub extends OrganizationVpcFlowLogsServiceStub {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonReachabilityServiceCallableFactory.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonReachabilityServiceCallableFactory.java
index 28e25a82cd4c..cbbbdf5afd27 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonReachabilityServiceCallableFactory.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonReachabilityServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonReachabilityServiceCallableFactory
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonReachabilityServiceStub.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonReachabilityServiceStub.java
index 4405af285cba..55e19d110f0d 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonReachabilityServiceStub.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonReachabilityServiceStub.java
@@ -65,6 +65,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonReachabilityServiceStub extends ReachabilityServiceStub {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonVpcFlowLogsServiceCallableFactory.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonVpcFlowLogsServiceCallableFactory.java
index a80cc5fab364..6ba13ec41c2d 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonVpcFlowLogsServiceCallableFactory.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonVpcFlowLogsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonVpcFlowLogsServiceCallableFactory
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonVpcFlowLogsServiceStub.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonVpcFlowLogsServiceStub.java
index bd828379fedb..354932b134da 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonVpcFlowLogsServiceStub.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/HttpJsonVpcFlowLogsServiceStub.java
@@ -70,6 +70,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonVpcFlowLogsServiceStub extends VpcFlowLogsServiceStub {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/OrganizationVpcFlowLogsServiceStub.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/OrganizationVpcFlowLogsServiceStub.java
index c8b39045d4aa..3adb8f26f0a7 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/OrganizationVpcFlowLogsServiceStub.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/OrganizationVpcFlowLogsServiceStub.java
@@ -44,6 +44,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class OrganizationVpcFlowLogsServiceStub implements BackgroundResource {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/OrganizationVpcFlowLogsServiceStubSettings.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/OrganizationVpcFlowLogsServiceStubSettings.java
index 9231e48d1da2..dcb547ee7474 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/OrganizationVpcFlowLogsServiceStubSettings.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/OrganizationVpcFlowLogsServiceStubSettings.java
@@ -77,6 +77,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -158,6 +159,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/ReachabilityServiceStub.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/ReachabilityServiceStub.java
index 94cda5afb3c9..56ec0aa41ce7 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/ReachabilityServiceStub.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/ReachabilityServiceStub.java
@@ -45,6 +45,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ReachabilityServiceStub implements BackgroundResource {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/ReachabilityServiceStubSettings.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/ReachabilityServiceStubSettings.java
index a09ea4f5e1d5..2a42da3f3ec0 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/ReachabilityServiceStubSettings.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/ReachabilityServiceStubSettings.java
@@ -78,6 +78,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -157,6 +158,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/VpcFlowLogsServiceStub.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/VpcFlowLogsServiceStub.java
index 7400ac2b7929..63804af6db58 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/VpcFlowLogsServiceStub.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/VpcFlowLogsServiceStub.java
@@ -50,6 +50,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class VpcFlowLogsServiceStub implements BackgroundResource {
diff --git a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/VpcFlowLogsServiceStubSettings.java b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/VpcFlowLogsServiceStubSettings.java
index 177921dc9f53..506a5deeb1b7 100644
--- a/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/VpcFlowLogsServiceStubSettings.java
+++ b/java-network-management/google-cloud-network-management/src/main/java/com/google/cloud/networkmanagement/v1beta1/stub/VpcFlowLogsServiceStubSettings.java
@@ -84,6 +84,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -163,6 +164,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/ConnectivityTestName.java b/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/ConnectivityTestName.java
index 54689efd6894..3cbe497a60be 100644
--- a/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/ConnectivityTestName.java
+++ b/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/ConnectivityTestName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConnectivityTestName implements ResourceName {
   private static final PathTemplate PROJECT_TEST =
diff --git a/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/LocationName.java b/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/LocationName.java
index 3c605fc172e9..c7ac5d11b0c5 100644
--- a/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/LocationName.java
+++ b/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/OrganizationLocationName.java b/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/OrganizationLocationName.java
index a7a76dbdc5b7..629d44c5dd02 100644
--- a/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/OrganizationLocationName.java
+++ b/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/OrganizationLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationLocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/ProjectName.java b/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/ProjectName.java
index c13901e2c37c..0797251fd450 100644
--- a/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/ProjectName.java
+++ b/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/VpcFlowLogsConfigName.java b/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/VpcFlowLogsConfigName.java
index 4af7da59afbc..28739cd456f2 100644
--- a/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/VpcFlowLogsConfigName.java
+++ b/java-network-management/proto-google-cloud-network-management-v1/src/main/java/com/google/cloud/networkmanagement/v1/VpcFlowLogsConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VpcFlowLogsConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_VPC_FLOW_LOGS_CONFIG =
diff --git a/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/ConnectivityTestName.java b/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/ConnectivityTestName.java
index 674e5a4695e8..9d335261fa01 100644
--- a/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/ConnectivityTestName.java
+++ b/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/ConnectivityTestName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConnectivityTestName implements ResourceName {
   private static final PathTemplate PROJECT_TEST =
diff --git a/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/LocationName.java b/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/LocationName.java
index 2e31dc1e20fa..3b7c03235e97 100644
--- a/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/LocationName.java
+++ b/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/OrganizationLocationName.java b/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/OrganizationLocationName.java
index b8d2d539afd0..8e14ddb39621 100644
--- a/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/OrganizationLocationName.java
+++ b/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/OrganizationLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationLocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/ProjectName.java b/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/ProjectName.java
index ff8d5e501629..d205d02899f1 100644
--- a/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/ProjectName.java
+++ b/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/VpcFlowLogsConfigName.java b/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/VpcFlowLogsConfigName.java
index 37889f625f02..5c2b1ecd0a06 100644
--- a/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/VpcFlowLogsConfigName.java
+++ b/java-network-management/proto-google-cloud-network-management-v1beta1/src/main/java/com/google/cloud/networkmanagement/v1beta1/VpcFlowLogsConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VpcFlowLogsConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_VPC_FLOW_LOGS_CONFIG =
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/AddressGroupServiceClient.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/AddressGroupServiceClient.java
index 85153ffcec04..78627c38f125 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/AddressGroupServiceClient.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/AddressGroupServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -380,6 +381,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AddressGroupServiceClient implements BackgroundResource {
   private final AddressGroupServiceSettings settings;
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/AddressGroupServiceSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/AddressGroupServiceSettings.java
index 41288a900280..2edcdc18ee94 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/AddressGroupServiceSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/AddressGroupServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AddressGroupServiceSettings extends ClientSettings<AddressGroupServiceSettings> {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/DnsThreatDetectorServiceClient.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/DnsThreatDetectorServiceClient.java
index f757c9273b08..745510adb1f1 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/DnsThreatDetectorServiceClient.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/DnsThreatDetectorServiceClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -288,6 +289,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DnsThreatDetectorServiceClient implements BackgroundResource {
   private final DnsThreatDetectorServiceSettings settings;
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/DnsThreatDetectorServiceSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/DnsThreatDetectorServiceSettings.java
index 0c72172c4a53..6cb93dff1735 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/DnsThreatDetectorServiceSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/DnsThreatDetectorServiceSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -96,6 +97,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DnsThreatDetectorServiceSettings
     extends ClientSettings<DnsThreatDetectorServiceSettings> {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/FirewallActivationClient.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/FirewallActivationClient.java
index 1443083bcd5e..92f35bde025f 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/FirewallActivationClient.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/FirewallActivationClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -495,6 +496,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FirewallActivationClient implements BackgroundResource {
   private final FirewallActivationSettings settings;
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/FirewallActivationSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/FirewallActivationSettings.java
index a78945122578..2a58b63a642f 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/FirewallActivationSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/FirewallActivationSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FirewallActivationSettings extends ClientSettings<FirewallActivationSettings> {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/InterceptClient.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/InterceptClient.java
index 90c540988a22..b5400f9fbc05 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/InterceptClient.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/InterceptClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -586,6 +587,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterceptClient implements BackgroundResource {
   private final InterceptSettings settings;
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/InterceptSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/InterceptSettings.java
index 8a06d89ea8a7..00d956342461 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/InterceptSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/InterceptSettings.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterceptSettings extends ClientSettings<InterceptSettings> {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/MirroringClient.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/MirroringClient.java
index 73d6219a2eab..2ee0daedf6d6 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/MirroringClient.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/MirroringClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -586,6 +587,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MirroringClient implements BackgroundResource {
   private final MirroringSettings settings;
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/MirroringSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/MirroringSettings.java
index b93cbd6ece78..6ac3305f5d1a 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/MirroringSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/MirroringSettings.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MirroringSettings extends ClientSettings<MirroringSettings> {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/NetworkSecurityClient.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/NetworkSecurityClient.java
index c4c60a2bf95c..8f60d0ebdcde 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/NetworkSecurityClient.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/NetworkSecurityClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1079,6 +1080,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkSecurityClient implements BackgroundResource {
   private final NetworkSecuritySettings settings;
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/NetworkSecuritySettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/NetworkSecuritySettings.java
index 8a9f4bcd0d23..1f37f5629ff4 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/NetworkSecuritySettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/NetworkSecuritySettings.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkSecuritySettings extends ClientSettings<NetworkSecuritySettings> {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/OrganizationAddressGroupServiceClient.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/OrganizationAddressGroupServiceClient.java
index bc4f32b04245..842b78a086ef 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/OrganizationAddressGroupServiceClient.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/OrganizationAddressGroupServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -381,6 +382,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationAddressGroupServiceClient implements BackgroundResource {
   private final OrganizationAddressGroupServiceSettings settings;
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/OrganizationAddressGroupServiceSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/OrganizationAddressGroupServiceSettings.java
index b5615cb147a5..f864c2fe6709 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/OrganizationAddressGroupServiceSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/OrganizationAddressGroupServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationAddressGroupServiceSettings
     extends ClientSettings<OrganizationAddressGroupServiceSettings> {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/OrganizationSecurityProfileGroupServiceClient.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/OrganizationSecurityProfileGroupServiceClient.java
index 829f63d7bd43..2ba122ff01f1 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/OrganizationSecurityProfileGroupServiceClient.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/OrganizationSecurityProfileGroupServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -406,6 +407,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationSecurityProfileGroupServiceClient implements BackgroundResource {
   private final OrganizationSecurityProfileGroupServiceSettings settings;
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/OrganizationSecurityProfileGroupServiceSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/OrganizationSecurityProfileGroupServiceSettings.java
index 8f5012a45041..c9ffc9c30236 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/OrganizationSecurityProfileGroupServiceSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/OrganizationSecurityProfileGroupServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -128,6 +129,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationSecurityProfileGroupServiceSettings
     extends ClientSettings<OrganizationSecurityProfileGroupServiceSettings> {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/SSERealmServiceClient.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/SSERealmServiceClient.java
index f04e36a34508..15cbdf36ed20 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/SSERealmServiceClient.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/SSERealmServiceClient.java
@@ -45,6 +45,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -352,6 +353,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SSERealmServiceClient implements BackgroundResource {
   private final SSERealmServiceSettings settings;
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/SSERealmServiceSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/SSERealmServiceSettings.java
index 59ee103e338e..6d7f221b6a7d 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/SSERealmServiceSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/SSERealmServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SSERealmServiceSettings extends ClientSettings<SSERealmServiceSettings> {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/SecurityProfileGroupServiceClient.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/SecurityProfileGroupServiceClient.java
index b5f6a25d030c..902916dac5ff 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/SecurityProfileGroupServiceClient.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/SecurityProfileGroupServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -400,6 +401,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecurityProfileGroupServiceClient implements BackgroundResource {
   private final SecurityProfileGroupServiceSettings settings;
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/SecurityProfileGroupServiceSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/SecurityProfileGroupServiceSettings.java
index 1a7a4eea0a88..4b3cc7470a1e 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/SecurityProfileGroupServiceSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/SecurityProfileGroupServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecurityProfileGroupServiceSettings
     extends ClientSettings<SecurityProfileGroupServiceSettings> {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/AddressGroupServiceStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/AddressGroupServiceStub.java
index 478149a1307c..a41615da5de0 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/AddressGroupServiceStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/AddressGroupServiceStub.java
@@ -49,6 +49,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AddressGroupServiceStub implements BackgroundResource {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/AddressGroupServiceStubSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/AddressGroupServiceStubSettings.java
index f710c9bf4f39..e340a1370e0b 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/AddressGroupServiceStubSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/AddressGroupServiceStubSettings.java
@@ -79,6 +79,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -158,6 +159,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AddressGroupServiceStubSettings extends StubSettings<AddressGroupServiceStubSettings> {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/DnsThreatDetectorServiceStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/DnsThreatDetectorServiceStub.java
index bbdf642f39b8..6f3463547273 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/DnsThreatDetectorServiceStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/DnsThreatDetectorServiceStub.java
@@ -39,6 +39,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DnsThreatDetectorServiceStub implements BackgroundResource {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/DnsThreatDetectorServiceStubSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/DnsThreatDetectorServiceStubSettings.java
index 12b3db95cfa3..d60b6c31a4e3 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/DnsThreatDetectorServiceStubSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/DnsThreatDetectorServiceStubSettings.java
@@ -66,6 +66,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DnsThreatDetectorServiceStubSettings
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/FirewallActivationStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/FirewallActivationStub.java
index 07445975910f..bb375bd69b47 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/FirewallActivationStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/FirewallActivationStub.java
@@ -52,6 +52,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FirewallActivationStub implements BackgroundResource {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/FirewallActivationStubSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/FirewallActivationStubSettings.java
index c100319ec71f..3c206eb809a2 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/FirewallActivationStubSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/FirewallActivationStubSettings.java
@@ -82,6 +82,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -161,6 +162,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FirewallActivationStubSettings extends StubSettings<FirewallActivationStubSettings> {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcAddressGroupServiceCallableFactory.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcAddressGroupServiceCallableFactory.java
index 377dea4b1c0e..51712066ff5a 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcAddressGroupServiceCallableFactory.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcAddressGroupServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAddressGroupServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcAddressGroupServiceStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcAddressGroupServiceStub.java
index 4199bf6a6f59..9acc420b6711 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcAddressGroupServiceStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcAddressGroupServiceStub.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAddressGroupServiceStub extends AddressGroupServiceStub {
   private static final MethodDescriptor<ListAddressGroupsRequest, ListAddressGroupsResponse>
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcDnsThreatDetectorServiceCallableFactory.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcDnsThreatDetectorServiceCallableFactory.java
index 77d611b466e3..9b195183bd82 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcDnsThreatDetectorServiceCallableFactory.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcDnsThreatDetectorServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDnsThreatDetectorServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcDnsThreatDetectorServiceStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcDnsThreatDetectorServiceStub.java
index 3a3b103fd63b..3ae5478b53a2 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcDnsThreatDetectorServiceStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcDnsThreatDetectorServiceStub.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDnsThreatDetectorServiceStub extends DnsThreatDetectorServiceStub {
   private static final MethodDescriptor<
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcFirewallActivationCallableFactory.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcFirewallActivationCallableFactory.java
index 286a7e00ca4e..736a2f26d2a3 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcFirewallActivationCallableFactory.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcFirewallActivationCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFirewallActivationCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcFirewallActivationStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcFirewallActivationStub.java
index 5944cc41f9e7..2e1d657f88e8 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcFirewallActivationStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcFirewallActivationStub.java
@@ -61,6 +61,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFirewallActivationStub extends FirewallActivationStub {
   private static final MethodDescriptor<ListFirewallEndpointsRequest, ListFirewallEndpointsResponse>
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcInterceptCallableFactory.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcInterceptCallableFactory.java
index 5ed0c1980ff9..0df2dee20f32 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcInterceptCallableFactory.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcInterceptCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcInterceptCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcInterceptStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcInterceptStub.java
index 5b181854e034..dd5ba32f2041 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcInterceptStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcInterceptStub.java
@@ -76,6 +76,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcInterceptStub extends InterceptStub {
   private static final MethodDescriptor<
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcMirroringCallableFactory.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcMirroringCallableFactory.java
index 07b60489b5bf..962b8c7ae3fc 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcMirroringCallableFactory.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcMirroringCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMirroringCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcMirroringStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcMirroringStub.java
index 7c3433aab8cf..ba024aec3d36 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcMirroringStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcMirroringStub.java
@@ -76,6 +76,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMirroringStub extends MirroringStub {
   private static final MethodDescriptor<
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcNetworkSecurityCallableFactory.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcNetworkSecurityCallableFactory.java
index 207d23852ce3..70df632924c1 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcNetworkSecurityCallableFactory.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcNetworkSecurityCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNetworkSecurityCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcNetworkSecurityStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcNetworkSecurityStub.java
index ab7e53a3051a..c68a37faa521 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcNetworkSecurityStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcNetworkSecurityStub.java
@@ -116,6 +116,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNetworkSecurityStub extends NetworkSecurityStub {
   private static final MethodDescriptor<
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcOrganizationAddressGroupServiceCallableFactory.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcOrganizationAddressGroupServiceCallableFactory.java
index 5f1c00c21672..1b79d489940d 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcOrganizationAddressGroupServiceCallableFactory.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcOrganizationAddressGroupServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOrganizationAddressGroupServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcOrganizationAddressGroupServiceStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcOrganizationAddressGroupServiceStub.java
index 2bc55e18edea..0789748d15b5 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcOrganizationAddressGroupServiceStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcOrganizationAddressGroupServiceStub.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOrganizationAddressGroupServiceStub extends OrganizationAddressGroupServiceStub {
   private static final MethodDescriptor<ListAddressGroupsRequest, ListAddressGroupsResponse>
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcOrganizationSecurityProfileGroupServiceCallableFactory.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcOrganizationSecurityProfileGroupServiceCallableFactory.java
index 9c62ad9335c4..75d6dbb35910 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcOrganizationSecurityProfileGroupServiceCallableFactory.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcOrganizationSecurityProfileGroupServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOrganizationSecurityProfileGroupServiceCallableFactory
     implements GrpcStubCallableFactory {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcOrganizationSecurityProfileGroupServiceStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcOrganizationSecurityProfileGroupServiceStub.java
index 2f13a4ebfc6a..bf72ed08bbc0 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcOrganizationSecurityProfileGroupServiceStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcOrganizationSecurityProfileGroupServiceStub.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOrganizationSecurityProfileGroupServiceStub
     extends OrganizationSecurityProfileGroupServiceStub {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcSSERealmServiceCallableFactory.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcSSERealmServiceCallableFactory.java
index f9df5cad7570..ccb93ad6ea50 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcSSERealmServiceCallableFactory.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcSSERealmServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSSERealmServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcSSERealmServiceStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcSSERealmServiceStub.java
index e373cf100169..544d6da6fcbd 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcSSERealmServiceStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcSSERealmServiceStub.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSSERealmServiceStub extends SSERealmServiceStub {
   private static final MethodDescriptor<ListSACRealmsRequest, ListSACRealmsResponse>
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcSecurityProfileGroupServiceCallableFactory.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcSecurityProfileGroupServiceCallableFactory.java
index c9ecfdff69d3..f32e2a8389e2 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcSecurityProfileGroupServiceCallableFactory.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcSecurityProfileGroupServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSecurityProfileGroupServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcSecurityProfileGroupServiceStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcSecurityProfileGroupServiceStub.java
index 3e6a10a11da0..3bceb9935dac 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcSecurityProfileGroupServiceStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/GrpcSecurityProfileGroupServiceStub.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSecurityProfileGroupServiceStub extends SecurityProfileGroupServiceStub {
   private static final MethodDescriptor<
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/InterceptStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/InterceptStub.java
index 4e5bab04db0b..f686621e2803 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/InterceptStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/InterceptStub.java
@@ -67,6 +67,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InterceptStub implements BackgroundResource {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/InterceptStubSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/InterceptStubSettings.java
index 69bd90007678..8b1f1027d246 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/InterceptStubSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/InterceptStubSettings.java
@@ -97,6 +97,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -173,6 +174,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InterceptStubSettings extends StubSettings<InterceptStubSettings> {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/MirroringStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/MirroringStub.java
index 6d21f2e48465..60b24d3a13fb 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/MirroringStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/MirroringStub.java
@@ -67,6 +67,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MirroringStub implements BackgroundResource {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/MirroringStubSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/MirroringStubSettings.java
index 1f8ea30ef705..cee40f4a4819 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/MirroringStubSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/MirroringStubSettings.java
@@ -97,6 +97,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -173,6 +174,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MirroringStubSettings extends StubSettings<MirroringStubSettings> {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/NetworkSecurityStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/NetworkSecurityStub.java
index 895667d6ff43..7cbba4d78ee7 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/NetworkSecurityStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/NetworkSecurityStub.java
@@ -107,6 +107,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NetworkSecurityStub implements BackgroundResource {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/NetworkSecurityStubSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/NetworkSecurityStubSettings.java
index da95224552aa..2fe561b85987 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/NetworkSecurityStubSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/NetworkSecurityStubSettings.java
@@ -137,6 +137,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -215,6 +216,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NetworkSecurityStubSettings extends StubSettings<NetworkSecurityStubSettings> {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/OrganizationAddressGroupServiceStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/OrganizationAddressGroupServiceStub.java
index 7939ffb18aec..3293a2cf0dd4 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/OrganizationAddressGroupServiceStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/OrganizationAddressGroupServiceStub.java
@@ -49,6 +49,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class OrganizationAddressGroupServiceStub implements BackgroundResource {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/OrganizationAddressGroupServiceStubSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/OrganizationAddressGroupServiceStubSettings.java
index 43bb75a195dd..6b6ca8d8da0f 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/OrganizationAddressGroupServiceStubSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/OrganizationAddressGroupServiceStubSettings.java
@@ -79,6 +79,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -160,6 +161,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class OrganizationAddressGroupServiceStubSettings
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/OrganizationSecurityProfileGroupServiceStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/OrganizationSecurityProfileGroupServiceStub.java
index 56a0b6767ad5..d10ece2cbe08 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/OrganizationSecurityProfileGroupServiceStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/OrganizationSecurityProfileGroupServiceStub.java
@@ -51,6 +51,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class OrganizationSecurityProfileGroupServiceStub implements BackgroundResource {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/OrganizationSecurityProfileGroupServiceStubSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/OrganizationSecurityProfileGroupServiceStubSettings.java
index e77278f040aa..b84289a39cbd 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/OrganizationSecurityProfileGroupServiceStubSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/OrganizationSecurityProfileGroupServiceStubSettings.java
@@ -81,6 +81,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -163,6 +164,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class OrganizationSecurityProfileGroupServiceStubSettings
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/SSERealmServiceStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/SSERealmServiceStub.java
index b32fa97e92dc..033b59a9a5e4 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/SSERealmServiceStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/SSERealmServiceStub.java
@@ -49,6 +49,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SSERealmServiceStub implements BackgroundResource {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/SSERealmServiceStubSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/SSERealmServiceStubSettings.java
index 777768b06f8b..9fd10b342ff2 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/SSERealmServiceStubSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/SSERealmServiceStubSettings.java
@@ -79,6 +79,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -157,6 +158,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SSERealmServiceStubSettings extends StubSettings<SSERealmServiceStubSettings> {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/SecurityProfileGroupServiceStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/SecurityProfileGroupServiceStub.java
index 31c60070392c..98b7eb25fe8c 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/SecurityProfileGroupServiceStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/SecurityProfileGroupServiceStub.java
@@ -51,6 +51,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SecurityProfileGroupServiceStub implements BackgroundResource {
 
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/SecurityProfileGroupServiceStubSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/SecurityProfileGroupServiceStubSettings.java
index e565038e7d29..2382339f6390 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/SecurityProfileGroupServiceStubSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1/stub/SecurityProfileGroupServiceStubSettings.java
@@ -81,6 +81,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -160,6 +161,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SecurityProfileGroupServiceStubSettings
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/DnsThreatDetectorServiceClient.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/DnsThreatDetectorServiceClient.java
index 6b821a7f5b37..7d0dc57fad8f 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/DnsThreatDetectorServiceClient.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/DnsThreatDetectorServiceClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -302,6 +303,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DnsThreatDetectorServiceClient implements BackgroundResource {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/DnsThreatDetectorServiceSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/DnsThreatDetectorServiceSettings.java
index fa375635727b..152f32525068 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/DnsThreatDetectorServiceSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/DnsThreatDetectorServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DnsThreatDetectorServiceSettings
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/NetworkSecurityClient.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/NetworkSecurityClient.java
index 284f2892c9d6..28b7826b265e 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/NetworkSecurityClient.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/NetworkSecurityClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -505,6 +506,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class NetworkSecurityClient implements BackgroundResource {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/NetworkSecuritySettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/NetworkSecuritySettings.java
index 8edb262ba985..7bcbf02ed59d 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/NetworkSecuritySettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/NetworkSecuritySettings.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class NetworkSecuritySettings extends ClientSettings<NetworkSecuritySettings> {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/DnsThreatDetectorServiceStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/DnsThreatDetectorServiceStub.java
index 16cad97a9f99..15f809ec7a82 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/DnsThreatDetectorServiceStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/DnsThreatDetectorServiceStub.java
@@ -40,6 +40,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DnsThreatDetectorServiceStub implements BackgroundResource {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/DnsThreatDetectorServiceStubSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/DnsThreatDetectorServiceStubSettings.java
index 175383cd4190..dbe10a44a3d6 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/DnsThreatDetectorServiceStubSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/DnsThreatDetectorServiceStubSettings.java
@@ -70,6 +70,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/GrpcDnsThreatDetectorServiceCallableFactory.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/GrpcDnsThreatDetectorServiceCallableFactory.java
index 0c0c87c6fdce..819feddb15b9 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/GrpcDnsThreatDetectorServiceCallableFactory.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/GrpcDnsThreatDetectorServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDnsThreatDetectorServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/GrpcDnsThreatDetectorServiceStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/GrpcDnsThreatDetectorServiceStub.java
index 1c99188930f9..2a929e263ff4 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/GrpcDnsThreatDetectorServiceStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/GrpcDnsThreatDetectorServiceStub.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDnsThreatDetectorServiceStub extends DnsThreatDetectorServiceStub {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/GrpcNetworkSecurityCallableFactory.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/GrpcNetworkSecurityCallableFactory.java
index 7792eed9c6c2..3a18d76a3a00 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/GrpcNetworkSecurityCallableFactory.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/GrpcNetworkSecurityCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcNetworkSecurityCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/GrpcNetworkSecurityStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/GrpcNetworkSecurityStub.java
index f8f6eeeb204a..aa8aee58d774 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/GrpcNetworkSecurityStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/GrpcNetworkSecurityStub.java
@@ -69,6 +69,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -76,6 +77,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcNetworkSecurityStub extends NetworkSecurityStub {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/HttpJsonDnsThreatDetectorServiceCallableFactory.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/HttpJsonDnsThreatDetectorServiceCallableFactory.java
index 2a5683e83755..422e76805ae1 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/HttpJsonDnsThreatDetectorServiceCallableFactory.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/HttpJsonDnsThreatDetectorServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDnsThreatDetectorServiceCallableFactory
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/HttpJsonDnsThreatDetectorServiceStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/HttpJsonDnsThreatDetectorServiceStub.java
index 8991eef0ee11..a0dd3cd0877a 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/HttpJsonDnsThreatDetectorServiceStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/HttpJsonDnsThreatDetectorServiceStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDnsThreatDetectorServiceStub extends DnsThreatDetectorServiceStub {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/HttpJsonNetworkSecurityCallableFactory.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/HttpJsonNetworkSecurityCallableFactory.java
index 503b29053259..ce8e2fce7707 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/HttpJsonNetworkSecurityCallableFactory.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/HttpJsonNetworkSecurityCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonNetworkSecurityCallableFactory
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/HttpJsonNetworkSecurityStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/HttpJsonNetworkSecurityStub.java
index 55a7d4b0c225..567ee2b7cb9d 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/HttpJsonNetworkSecurityStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/HttpJsonNetworkSecurityStub.java
@@ -80,6 +80,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonNetworkSecurityStub extends NetworkSecurityStub {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/NetworkSecurityStub.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/NetworkSecurityStub.java
index 2763f429b04a..5225119e11c1 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/NetworkSecurityStub.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/NetworkSecurityStub.java
@@ -60,6 +60,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class NetworkSecurityStub implements BackgroundResource {
diff --git a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/NetworkSecurityStubSettings.java b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/NetworkSecurityStubSettings.java
index e746ada221c5..f18c9508af16 100644
--- a/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/NetworkSecurityStubSettings.java
+++ b/java-network-security/google-cloud-network-security/src/main/java/com/google/cloud/networksecurity/v1beta1/stub/NetworkSecurityStubSettings.java
@@ -93,6 +93,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -171,6 +172,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/AddressGroupName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/AddressGroupName.java
index 3d04f9448936..53403b4f9ad8 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/AddressGroupName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/AddressGroupName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AddressGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ADDRESS_GROUP =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/AuthorizationPolicyName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/AuthorizationPolicyName.java
index cb1ddf5281a9..bfd7896360ae 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/AuthorizationPolicyName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/AuthorizationPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AuthorizationPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AUTHORIZATION_POLICY =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/AuthzPolicyName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/AuthzPolicyName.java
index e53d0934cf2f..710ced6adef9 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/AuthzPolicyName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/AuthzPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AuthzPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AUTHZ_POLICY =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/BackendAuthenticationConfigName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/BackendAuthenticationConfigName.java
index ae3f38b13719..f29060cb3c68 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/BackendAuthenticationConfigName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/BackendAuthenticationConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackendAuthenticationConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKEND_AUTHENTICATION_CONFIG =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/ClientTlsPolicyName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/ClientTlsPolicyName.java
index 5fae689a3cdf..709c889d77c9 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/ClientTlsPolicyName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/ClientTlsPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClientTlsPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLIENT_TLS_POLICY =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/DnsThreatDetectorName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/DnsThreatDetectorName.java
index 30ff882dd7a6..8eebef95b3be 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/DnsThreatDetectorName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/DnsThreatDetectorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DnsThreatDetectorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DNS_THREAT_DETECTOR =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/FirewallEndpointAssociationName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/FirewallEndpointAssociationName.java
index 2c49a0ff268b..34e71a9159ea 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/FirewallEndpointAssociationName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/FirewallEndpointAssociationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FirewallEndpointAssociationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_FIREWALL_ENDPOINT_ASSOCIATION =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/FirewallEndpointName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/FirewallEndpointName.java
index 84c35e0b2f05..2dc7d26ae8f4 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/FirewallEndpointName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/FirewallEndpointName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FirewallEndpointName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_FIREWALL_ENDPOINT =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/GatewaySecurityPolicyName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/GatewaySecurityPolicyName.java
index e89eb6133a1b..960c3b70f07d 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/GatewaySecurityPolicyName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/GatewaySecurityPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GatewaySecurityPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GATEWAY_SECURITY_POLICY =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/GatewaySecurityPolicyRuleName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/GatewaySecurityPolicyRuleName.java
index 6e5d0e7d1dba..3c3cc468b214 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/GatewaySecurityPolicyRuleName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/GatewaySecurityPolicyRuleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GatewaySecurityPolicyRuleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GATEWAY_SECURITY_POLICY_RULE =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/InterceptDeploymentGroupName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/InterceptDeploymentGroupName.java
index 540ee612d69d..3a2cc23a8d71 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/InterceptDeploymentGroupName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/InterceptDeploymentGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterceptDeploymentGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INTERCEPT_DEPLOYMENT_GROUP =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/InterceptDeploymentName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/InterceptDeploymentName.java
index c8796a4a3045..3f36919c9fde 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/InterceptDeploymentName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/InterceptDeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterceptDeploymentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INTERCEPT_DEPLOYMENT =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/InterceptEndpointGroupAssociationName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/InterceptEndpointGroupAssociationName.java
index 29a2bfd98cac..f5bdb610d632 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/InterceptEndpointGroupAssociationName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/InterceptEndpointGroupAssociationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterceptEndpointGroupAssociationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INTERCEPT_ENDPOINT_GROUP_ASSOCIATION =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/InterceptEndpointGroupName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/InterceptEndpointGroupName.java
index 46cecb0d3eed..9142874b19df 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/InterceptEndpointGroupName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/InterceptEndpointGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InterceptEndpointGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INTERCEPT_ENDPOINT_GROUP =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/LocationName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/LocationName.java
index dab63fd25bcb..c07e754914cd 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/LocationName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/MirroringDeploymentGroupName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/MirroringDeploymentGroupName.java
index 39dd86780ae2..0796b510ee55 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/MirroringDeploymentGroupName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/MirroringDeploymentGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MirroringDeploymentGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MIRRORING_DEPLOYMENT_GROUP =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/MirroringDeploymentName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/MirroringDeploymentName.java
index 07c4ae4cb252..9ad1d0f705a6 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/MirroringDeploymentName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/MirroringDeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MirroringDeploymentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MIRRORING_DEPLOYMENT =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/MirroringEndpointGroupAssociationName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/MirroringEndpointGroupAssociationName.java
index 26fbee18b856..6d3a389e6d7d 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/MirroringEndpointGroupAssociationName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/MirroringEndpointGroupAssociationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MirroringEndpointGroupAssociationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MIRRORING_ENDPOINT_GROUP_ASSOCIATION =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/MirroringEndpointGroupName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/MirroringEndpointGroupName.java
index 1cb0d83e1d38..e8029c66aa58 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/MirroringEndpointGroupName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/MirroringEndpointGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MirroringEndpointGroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MIRRORING_ENDPOINT_GROUP =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/OrganizationLocationName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/OrganizationLocationName.java
index 17d665a504d4..c0e21ae06280 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/OrganizationLocationName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/OrganizationLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationLocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/SACAttachmentName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/SACAttachmentName.java
index d881ca1e9ec3..ef7fcd52e96c 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/SACAttachmentName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/SACAttachmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SACAttachmentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SAC_ATTACHMENT =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/SACRealmName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/SACRealmName.java
index 7fabce3bb91e..2e5dadf783e3 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/SACRealmName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/SACRealmName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SACRealmName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SAC_REALM =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/SecurityProfileGroupName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/SecurityProfileGroupName.java
index bae12b0af443..5606b423567f 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/SecurityProfileGroupName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/SecurityProfileGroupName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecurityProfileGroupName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_SECURITY_PROFILE_GROUP =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/SecurityProfileName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/SecurityProfileName.java
index dc8cf2fa8c55..7929b3864dd3 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/SecurityProfileName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/SecurityProfileName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecurityProfileName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_SECURITY_PROFILE =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/ServerTlsPolicyName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/ServerTlsPolicyName.java
index 747e178854bf..f03bee461135 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/ServerTlsPolicyName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/ServerTlsPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServerTlsPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVER_TLS_POLICY =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/TlsInspectionPolicyName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/TlsInspectionPolicyName.java
index 3656878af6f0..7003ac68e5b4 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/TlsInspectionPolicyName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/TlsInspectionPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TlsInspectionPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TLS_INSPECTION_POLICY =
diff --git a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/UrlListName.java b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/UrlListName.java
index feda610d5569..74fb4b661e39 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/UrlListName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1/src/main/java/com/google/cloud/networksecurity/v1/UrlListName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UrlListName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_URL_LIST =
diff --git a/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/AuthorizationPolicyName.java b/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/AuthorizationPolicyName.java
index 5af548279813..38993d76bb4f 100644
--- a/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/AuthorizationPolicyName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/AuthorizationPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AuthorizationPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AUTHORIZATION_POLICY =
diff --git a/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/ClientTlsPolicyName.java b/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/ClientTlsPolicyName.java
index 04ac0c04104e..1d8160082013 100644
--- a/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/ClientTlsPolicyName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/ClientTlsPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClientTlsPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLIENT_TLS_POLICY =
diff --git a/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/DnsThreatDetectorName.java b/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/DnsThreatDetectorName.java
index 097a32368e8d..a51dd23f2199 100644
--- a/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/DnsThreatDetectorName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/DnsThreatDetectorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DnsThreatDetectorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DNS_THREAT_DETECTOR =
diff --git a/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/LocationName.java b/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/LocationName.java
index ecc87332c160..6cc1c49c97fd 100644
--- a/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/LocationName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/ServerTlsPolicyName.java b/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/ServerTlsPolicyName.java
index a8ef740c7667..849b93364a6e 100644
--- a/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/ServerTlsPolicyName.java
+++ b/java-network-security/proto-google-cloud-network-security-v1beta1/src/main/java/com/google/cloud/networksecurity/v1beta1/ServerTlsPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServerTlsPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVER_TLS_POLICY =
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/CrossNetworkAutomationServiceClient.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/CrossNetworkAutomationServiceClient.java
index d3f5bae3be85..19f23e0f8a23 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/CrossNetworkAutomationServiceClient.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/CrossNetworkAutomationServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -549,6 +550,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CrossNetworkAutomationServiceClient implements BackgroundResource {
   private final CrossNetworkAutomationServiceSettings settings;
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/CrossNetworkAutomationServiceSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/CrossNetworkAutomationServiceSettings.java
index 72b496ce9d02..9a1923c4f3f4 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/CrossNetworkAutomationServiceSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/CrossNetworkAutomationServiceSettings.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CrossNetworkAutomationServiceSettings
     extends ClientSettings<CrossNetworkAutomationServiceSettings> {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/DataTransferServiceClient.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/DataTransferServiceClient.java
index 6bef9ca3fc3c..e87ea6dffad3 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/DataTransferServiceClient.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/DataTransferServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -431,6 +432,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataTransferServiceClient implements BackgroundResource {
   private final DataTransferServiceSettings settings;
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/DataTransferServiceSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/DataTransferServiceSettings.java
index defcd8d4f07d..9ddc3b21bcb0 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/DataTransferServiceSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/DataTransferServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataTransferServiceSettings extends ClientSettings<DataTransferServiceSettings> {
 
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/HubServiceClient.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/HubServiceClient.java
index 49859735fbab..821e67f81820 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/HubServiceClient.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/HubServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -652,6 +653,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HubServiceClient implements BackgroundResource {
   private final HubServiceSettings settings;
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/HubServiceSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/HubServiceSettings.java
index 508293a26af9..9e1a15c38b41 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/HubServiceSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/HubServiceSettings.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HubServiceSettings extends ClientSettings<HubServiceSettings> {
 
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/InternalRangeServiceClient.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/InternalRangeServiceClient.java
index 6bd39028b860..c8d5251790ee 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/InternalRangeServiceClient.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/InternalRangeServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -293,6 +294,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InternalRangeServiceClient implements BackgroundResource {
   private final InternalRangeServiceSettings settings;
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/InternalRangeServiceSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/InternalRangeServiceSettings.java
index 5010d1e8896d..241fdb60479f 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/InternalRangeServiceSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/InternalRangeServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InternalRangeServiceSettings extends ClientSettings<InternalRangeServiceSettings> {
 
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/PolicyBasedRoutingServiceClient.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/PolicyBasedRoutingServiceClient.java
index 758374fb29e9..1c295993923f 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/PolicyBasedRoutingServiceClient.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/PolicyBasedRoutingServiceClient.java
@@ -45,6 +45,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -273,6 +274,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyBasedRoutingServiceClient implements BackgroundResource {
   private final PolicyBasedRoutingServiceSettings settings;
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/PolicyBasedRoutingServiceSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/PolicyBasedRoutingServiceSettings.java
index a42be69e27ed..4f6f467741e7 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/PolicyBasedRoutingServiceSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/PolicyBasedRoutingServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyBasedRoutingServiceSettings
     extends ClientSettings<PolicyBasedRoutingServiceSettings> {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/CrossNetworkAutomationServiceStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/CrossNetworkAutomationServiceStub.java
index 1ff93c9a2d60..d265416e5538 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/CrossNetworkAutomationServiceStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/CrossNetworkAutomationServiceStub.java
@@ -65,6 +65,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CrossNetworkAutomationServiceStub implements BackgroundResource {
 
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/CrossNetworkAutomationServiceStubSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/CrossNetworkAutomationServiceStubSettings.java
index f89694af4755..0125f0c414e7 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/CrossNetworkAutomationServiceStubSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/CrossNetworkAutomationServiceStubSettings.java
@@ -95,6 +95,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -174,6 +175,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CrossNetworkAutomationServiceStubSettings
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/DataTransferServiceStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/DataTransferServiceStub.java
index 2748a0c73dc2..801ef2af002a 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/DataTransferServiceStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/DataTransferServiceStub.java
@@ -56,6 +56,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataTransferServiceStub implements BackgroundResource {
 
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/DataTransferServiceStubSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/DataTransferServiceStubSettings.java
index 956df628b805..405e5363fc5c 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/DataTransferServiceStubSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/DataTransferServiceStubSettings.java
@@ -86,6 +86,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -165,6 +166,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataTransferServiceStubSettings extends StubSettings<DataTransferServiceStubSettings> {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcCrossNetworkAutomationServiceCallableFactory.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcCrossNetworkAutomationServiceCallableFactory.java
index 6afae5032874..3dd761a928f1 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcCrossNetworkAutomationServiceCallableFactory.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcCrossNetworkAutomationServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCrossNetworkAutomationServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcCrossNetworkAutomationServiceStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcCrossNetworkAutomationServiceStub.java
index dee2d06a18f9..a3492e67f095 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcCrossNetworkAutomationServiceStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcCrossNetworkAutomationServiceStub.java
@@ -74,6 +74,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCrossNetworkAutomationServiceStub extends CrossNetworkAutomationServiceStub {
   private static final MethodDescriptor<
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcDataTransferServiceCallableFactory.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcDataTransferServiceCallableFactory.java
index 63f9834e4d01..0ce11403e31d 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcDataTransferServiceCallableFactory.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcDataTransferServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataTransferServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcDataTransferServiceStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcDataTransferServiceStub.java
index 163eceebb4ef..fbb453aa4570 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcDataTransferServiceStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcDataTransferServiceStub.java
@@ -65,6 +65,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataTransferServiceStub extends DataTransferServiceStub {
   private static final MethodDescriptor<
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcHubServiceCallableFactory.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcHubServiceCallableFactory.java
index afc46758f508..341e9419bac3 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcHubServiceCallableFactory.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcHubServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcHubServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcHubServiceStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcHubServiceStub.java
index 18492f7392f4..8ab116327fe7 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcHubServiceStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcHubServiceStub.java
@@ -90,6 +90,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcHubServiceStub extends HubServiceStub {
   private static final MethodDescriptor<ListHubsRequest, ListHubsResponse>
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcInternalRangeServiceCallableFactory.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcInternalRangeServiceCallableFactory.java
index 7306cb58835d..20804b6c26c0 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcInternalRangeServiceCallableFactory.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcInternalRangeServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcInternalRangeServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcInternalRangeServiceStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcInternalRangeServiceStub.java
index d9e34f0aab8f..535a6f0e7075 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcInternalRangeServiceStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcInternalRangeServiceStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcInternalRangeServiceStub extends InternalRangeServiceStub {
   private static final MethodDescriptor<ListInternalRangesRequest, ListInternalRangesResponse>
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcPolicyBasedRoutingServiceCallableFactory.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcPolicyBasedRoutingServiceCallableFactory.java
index 5c85c58d423f..f7275e7c6c30 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcPolicyBasedRoutingServiceCallableFactory.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcPolicyBasedRoutingServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPolicyBasedRoutingServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcPolicyBasedRoutingServiceStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcPolicyBasedRoutingServiceStub.java
index 09a68ae9da31..8e7a2314d49c 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcPolicyBasedRoutingServiceStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/GrpcPolicyBasedRoutingServiceStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPolicyBasedRoutingServiceStub extends PolicyBasedRoutingServiceStub {
   private static final MethodDescriptor<ListPolicyBasedRoutesRequest, ListPolicyBasedRoutesResponse>
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/HubServiceStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/HubServiceStub.java
index 3fcac08471f9..711cbf402612 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/HubServiceStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/HubServiceStub.java
@@ -81,6 +81,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class HubServiceStub implements BackgroundResource {
 
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/HubServiceStubSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/HubServiceStubSettings.java
index a56a3e2986fc..f3fa5f532e45 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/HubServiceStubSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/HubServiceStubSettings.java
@@ -112,6 +112,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -188,6 +189,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class HubServiceStubSettings extends StubSettings<HubServiceStubSettings> {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/InternalRangeServiceStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/InternalRangeServiceStub.java
index 24239e0171a6..a479b1355a32 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/InternalRangeServiceStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/InternalRangeServiceStub.java
@@ -43,6 +43,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InternalRangeServiceStub implements BackgroundResource {
 
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/InternalRangeServiceStubSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/InternalRangeServiceStubSettings.java
index 5ef0bc0b358a..170134501783 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/InternalRangeServiceStubSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/InternalRangeServiceStubSettings.java
@@ -73,6 +73,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InternalRangeServiceStubSettings
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/PolicyBasedRoutingServiceStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/PolicyBasedRoutingServiceStub.java
index 905ab0e1d5b0..b60f7a58676a 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/PolicyBasedRoutingServiceStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/PolicyBasedRoutingServiceStub.java
@@ -42,6 +42,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PolicyBasedRoutingServiceStub implements BackgroundResource {
 
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/PolicyBasedRoutingServiceStubSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/PolicyBasedRoutingServiceStubSettings.java
index b85d2564801f..c88abdebd4a2 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/PolicyBasedRoutingServiceStubSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1/stub/PolicyBasedRoutingServiceStubSettings.java
@@ -72,6 +72,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PolicyBasedRoutingServiceStubSettings
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/HubServiceClient.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/HubServiceClient.java
index 0651b82af138..82a5a1d5e6a6 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/HubServiceClient.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/HubServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -307,6 +308,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HubServiceClient implements BackgroundResource {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/HubServiceSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/HubServiceSettings.java
index c8c9dcc505f1..16c90cd5c0b9 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/HubServiceSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/HubServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HubServiceSettings extends ClientSettings<HubServiceSettings> {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/stub/GrpcHubServiceCallableFactory.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/stub/GrpcHubServiceCallableFactory.java
index 6427f25795af..a61ccfb34a12 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/stub/GrpcHubServiceCallableFactory.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/stub/GrpcHubServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcHubServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/stub/GrpcHubServiceStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/stub/GrpcHubServiceStub.java
index efa9c8f56567..f33ccdeb44ae 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/stub/GrpcHubServiceStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/stub/GrpcHubServiceStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcHubServiceStub extends HubServiceStub {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/stub/HubServiceStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/stub/HubServiceStub.java
index 016e80d31388..cc1298fa144d 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/stub/HubServiceStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/stub/HubServiceStub.java
@@ -42,6 +42,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class HubServiceStub implements BackgroundResource {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/stub/HubServiceStubSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/stub/HubServiceStubSettings.java
index cbe65aa63c52..d616f55f87f0 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/stub/HubServiceStubSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/stub/HubServiceStubSettings.java
@@ -72,6 +72,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/DataTransferServiceClient.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/DataTransferServiceClient.java
index fcd99dd0be94..1fc6af562f7b 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/DataTransferServiceClient.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/DataTransferServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -433,6 +434,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataTransferServiceClient implements BackgroundResource {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/DataTransferServiceSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/DataTransferServiceSettings.java
index 856b83b84681..a306dec7911f 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/DataTransferServiceSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/DataTransferServiceSettings.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataTransferServiceSettings extends ClientSettings<DataTransferServiceSettings> {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/HubServiceClient.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/HubServiceClient.java
index a57c16817c36..cbbf27af92d1 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/HubServiceClient.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/HubServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -752,6 +753,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HubServiceClient implements BackgroundResource {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/HubServiceSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/HubServiceSettings.java
index e364aed280e0..313e0bf0278e 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/HubServiceSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/HubServiceSettings.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HubServiceSettings extends ClientSettings<HubServiceSettings> {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/PolicyBasedRoutingServiceClient.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/PolicyBasedRoutingServiceClient.java
index 543351697bbd..68d1cb201848 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/PolicyBasedRoutingServiceClient.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/PolicyBasedRoutingServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -275,6 +276,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PolicyBasedRoutingServiceClient implements BackgroundResource {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/PolicyBasedRoutingServiceSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/PolicyBasedRoutingServiceSettings.java
index c88d0f8d7584..db7e2a1c5a63 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/PolicyBasedRoutingServiceSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/PolicyBasedRoutingServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PolicyBasedRoutingServiceSettings
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/TransportManagerClient.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/TransportManagerClient.java
index d9daa80be4a3..d8b324ffb70b 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/TransportManagerClient.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/TransportManagerClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -352,6 +353,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TransportManagerClient implements BackgroundResource {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/TransportManagerSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/TransportManagerSettings.java
index 33a9f092a65f..ee5a62a0514d 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/TransportManagerSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/TransportManagerSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TransportManagerSettings extends ClientSettings<TransportManagerSettings> {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/DataTransferServiceStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/DataTransferServiceStub.java
index 12519e3786e4..d753c7c479ac 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/DataTransferServiceStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/DataTransferServiceStub.java
@@ -57,6 +57,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DataTransferServiceStub implements BackgroundResource {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/DataTransferServiceStubSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/DataTransferServiceStubSettings.java
index 5d07af695d42..acc5e4466d00 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/DataTransferServiceStubSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/DataTransferServiceStubSettings.java
@@ -87,6 +87,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -166,6 +167,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcDataTransferServiceCallableFactory.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcDataTransferServiceCallableFactory.java
index 6209231b250f..af4c06510198 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcDataTransferServiceCallableFactory.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcDataTransferServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataTransferServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcDataTransferServiceStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcDataTransferServiceStub.java
index bef1a646c61b..ea4096ccf672 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcDataTransferServiceStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcDataTransferServiceStub.java
@@ -66,6 +66,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataTransferServiceStub extends DataTransferServiceStub {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcHubServiceCallableFactory.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcHubServiceCallableFactory.java
index 33d09d141e0e..5c5c6ce460b9 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcHubServiceCallableFactory.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcHubServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcHubServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcHubServiceStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcHubServiceStub.java
index 3705286bdad7..855c1e599a61 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcHubServiceStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcHubServiceStub.java
@@ -99,6 +99,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -106,6 +107,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcHubServiceStub extends HubServiceStub {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcPolicyBasedRoutingServiceCallableFactory.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcPolicyBasedRoutingServiceCallableFactory.java
index dad54f3d6a7d..d871d8f7a28b 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcPolicyBasedRoutingServiceCallableFactory.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcPolicyBasedRoutingServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPolicyBasedRoutingServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcPolicyBasedRoutingServiceStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcPolicyBasedRoutingServiceStub.java
index 2f84458103c6..4a508d7a1511 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcPolicyBasedRoutingServiceStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcPolicyBasedRoutingServiceStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPolicyBasedRoutingServiceStub extends PolicyBasedRoutingServiceStub {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcTransportManagerCallableFactory.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcTransportManagerCallableFactory.java
index d7375e8f0f82..8aa459b5394a 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcTransportManagerCallableFactory.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcTransportManagerCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTransportManagerCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcTransportManagerStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcTransportManagerStub.java
index 11766a180fda..44aeed87ad4e 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcTransportManagerStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/GrpcTransportManagerStub.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTransportManagerStub extends TransportManagerStub {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/HubServiceStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/HubServiceStub.java
index dc1c1631b02e..0736a104f6a4 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/HubServiceStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/HubServiceStub.java
@@ -90,6 +90,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class HubServiceStub implements BackgroundResource {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/HubServiceStubSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/HubServiceStubSettings.java
index f021d2d7dced..1faac583501f 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/HubServiceStubSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/HubServiceStubSettings.java
@@ -121,6 +121,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -197,6 +198,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/PolicyBasedRoutingServiceStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/PolicyBasedRoutingServiceStub.java
index 6a3aa693a4c9..912522a6646d 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/PolicyBasedRoutingServiceStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/PolicyBasedRoutingServiceStub.java
@@ -43,6 +43,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PolicyBasedRoutingServiceStub implements BackgroundResource {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/PolicyBasedRoutingServiceStubSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/PolicyBasedRoutingServiceStubSettings.java
index a8fc384ee007..d003dea4ccd6 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/PolicyBasedRoutingServiceStubSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/PolicyBasedRoutingServiceStubSettings.java
@@ -73,6 +73,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/TransportManagerStub.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/TransportManagerStub.java
index 94f61e0227be..c9facd1daf48 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/TransportManagerStub.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/TransportManagerStub.java
@@ -51,6 +51,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class TransportManagerStub implements BackgroundResource {
diff --git a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/TransportManagerStubSettings.java b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/TransportManagerStubSettings.java
index 4f41554fe55a..ee9307a0f6a5 100644
--- a/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/TransportManagerStubSettings.java
+++ b/java-networkconnectivity/google-cloud-networkconnectivity/src/main/java/com/google/cloud/networkconnectivity/v1beta/stub/TransportManagerStubSettings.java
@@ -81,6 +81,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -159,6 +160,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/DestinationName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/DestinationName.java
index fb5cce2f6b58..12d4ac72769a 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/DestinationName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/DestinationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DestinationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MULTICLOUD_DATA_TRANSFER_CONFIG_DESTINATION =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/GroupName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/GroupName.java
index f92ba62258a8..aae2e6233773 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/GroupName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/GroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GroupName implements ResourceName {
   private static final PathTemplate PROJECT_HUB_GROUP =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/HubName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/HubName.java
index 399a22161717..77ac7264cc1a 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/HubName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/HubName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HubName implements ResourceName {
   private static final PathTemplate PROJECT_HUB =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/HubRouteName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/HubRouteName.java
index e83d5607f743..01a52579bc34 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/HubRouteName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/HubRouteName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HubRouteName implements ResourceName {
   private static final PathTemplate PROJECT_HUB_ROUTE_TABLE_ROUTE =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/InternalRangeName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/InternalRangeName.java
index bda3f653c1d0..a9275c230460 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/InternalRangeName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/InternalRangeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InternalRangeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INTERNAL_RANGE =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/LocationName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/LocationName.java
index 12481ea2a6df..3de0ce9d5ad3 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/LocationName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/MulticloudDataTransferConfigName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/MulticloudDataTransferConfigName.java
index 319ee2e771a8..37b135fc1794 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/MulticloudDataTransferConfigName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/MulticloudDataTransferConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MulticloudDataTransferConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MULTICLOUD_DATA_TRANSFER_CONFIG =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/MulticloudDataTransferSupportedServiceName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/MulticloudDataTransferSupportedServiceName.java
index a545522757fb..6abbfe322331 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/MulticloudDataTransferSupportedServiceName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/MulticloudDataTransferSupportedServiceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MulticloudDataTransferSupportedServiceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MULTICLOUD_DATA_TRANSFER_SUPPORTED_SERVICE =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/PolicyBasedRouteName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/PolicyBasedRouteName.java
index 9d5ca4baa340..bc060fd7abea 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/PolicyBasedRouteName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/PolicyBasedRouteName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyBasedRouteName implements ResourceName {
   private static final PathTemplate PROJECT_POLICY_BASED_ROUTE =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/RouteTableName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/RouteTableName.java
index de9bda9a67bb..48ee26349659 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/RouteTableName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/RouteTableName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RouteTableName implements ResourceName {
   private static final PathTemplate PROJECT_HUB_ROUTE_TABLE =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/ServiceClassName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/ServiceClassName.java
index 91963a1ff4fa..b8578072479d 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/ServiceClassName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/ServiceClassName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceClassName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE_CLASS =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/ServiceConnectionMapName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/ServiceConnectionMapName.java
index 090f5999daaf..abb677bac660 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/ServiceConnectionMapName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/ServiceConnectionMapName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceConnectionMapName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE_CONNECTION_MAP =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/ServiceConnectionPolicyName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/ServiceConnectionPolicyName.java
index d839544de15e..444923db0344 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/ServiceConnectionPolicyName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/ServiceConnectionPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceConnectionPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE_CONNECTION_POLICY =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/ServiceConnectionTokenName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/ServiceConnectionTokenName.java
index 69dfdee6ea4a..31e45173b55f 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/ServiceConnectionTokenName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/ServiceConnectionTokenName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceConnectionTokenName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE_CONNECTION_TOKEN =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/SpokeName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/SpokeName.java
index 558cee3923df..97aa8d20b4e6 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/SpokeName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1/src/main/java/com/google/cloud/networkconnectivity/v1/SpokeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpokeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SPOKE =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1alpha1/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/HubName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1alpha1/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/HubName.java
index dfb5a14ad031..af92dcaa7627 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1alpha1/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/HubName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1alpha1/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/HubName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HubName implements ResourceName {
   private static final PathTemplate PROJECT_HUB =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1alpha1/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/LocationName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1alpha1/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/LocationName.java
index 1c53d6137ca1..0b769c77933e 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1alpha1/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/LocationName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1alpha1/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1alpha1/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/SpokeName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1alpha1/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/SpokeName.java
index ef85d5f5e90f..2f4e011fb013 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1alpha1/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/SpokeName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1alpha1/src/main/java/com/google/cloud/networkconnectivity/v1alpha1/SpokeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpokeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SPOKE =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/DestinationName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/DestinationName.java
index 43278897651d..cc22d86489ae 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/DestinationName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/DestinationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DestinationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MULTICLOUD_DATA_TRANSFER_CONFIG_DESTINATION =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/GatewayAdvertisedRouteName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/GatewayAdvertisedRouteName.java
index 279c29a833b4..9eb55b6eee17 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/GatewayAdvertisedRouteName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/GatewayAdvertisedRouteName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GatewayAdvertisedRouteName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SPOKE_GATEWAY_ADVERTISED_ROUTE =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/GroupName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/GroupName.java
index dc6ed941ed5b..8a5d3391b161 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/GroupName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/GroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GroupName implements ResourceName {
   private static final PathTemplate PROJECT_HUB_GROUP =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/HubName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/HubName.java
index aaaf03fe9cfe..e45c9203880e 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/HubName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/HubName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HubName implements ResourceName {
   private static final PathTemplate PROJECT_HUB =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/HubRouteName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/HubRouteName.java
index 133685058403..8ae5f05a443b 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/HubRouteName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/HubRouteName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HubRouteName implements ResourceName {
   private static final PathTemplate PROJECT_HUB_ROUTE_TABLE_ROUTE =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/LocationName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/LocationName.java
index 7949833587db..a9615f1d8558 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/LocationName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/MulticloudDataTransferConfigName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/MulticloudDataTransferConfigName.java
index eceee78cdcae..e91828fc32fd 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/MulticloudDataTransferConfigName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/MulticloudDataTransferConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MulticloudDataTransferConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MULTICLOUD_DATA_TRANSFER_CONFIG =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/MulticloudDataTransferSupportedServiceName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/MulticloudDataTransferSupportedServiceName.java
index c2ea47ec6e81..86a652b963bc 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/MulticloudDataTransferSupportedServiceName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/MulticloudDataTransferSupportedServiceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MulticloudDataTransferSupportedServiceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MULTICLOUD_DATA_TRANSFER_SUPPORTED_SERVICE =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/PolicyBasedRouteName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/PolicyBasedRouteName.java
index c201d0971ee6..9d5c1a411915 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/PolicyBasedRouteName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/PolicyBasedRouteName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyBasedRouteName implements ResourceName {
   private static final PathTemplate PROJECT_POLICY_BASED_ROUTE =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/RemoteTransportProfileName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/RemoteTransportProfileName.java
index 40438104c74f..8119243cfcb3 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/RemoteTransportProfileName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/RemoteTransportProfileName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RemoteTransportProfileName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REMOTE_TRANSPORT_PROFILE =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/RouteTableName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/RouteTableName.java
index 25fe0e2136b3..4cade4a875af 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/RouteTableName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/RouteTableName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RouteTableName implements ResourceName {
   private static final PathTemplate PROJECT_HUB_ROUTE_TABLE =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/SpokeName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/SpokeName.java
index 2de4338446ea..4d8058c0ff39 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/SpokeName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/SpokeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpokeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SPOKE =
diff --git a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/TransportName.java b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/TransportName.java
index c2a7d6bf9eea..36ea4f1d6bc1 100644
--- a/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/TransportName.java
+++ b/java-networkconnectivity/proto-google-cloud-networkconnectivity-v1beta/src/main/java/com/google/cloud/networkconnectivity/v1beta/TransportName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TransportName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TRANSPORT =
diff --git a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/DepServiceClient.java b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/DepServiceClient.java
index 005b16203a1f..c8ad910f121d 100644
--- a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/DepServiceClient.java
+++ b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/DepServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -597,6 +598,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DepServiceClient implements BackgroundResource {
   private final DepServiceSettings settings;
diff --git a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/DepServiceSettings.java b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/DepServiceSettings.java
index a554606848cf..209944ea4e81 100644
--- a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/DepServiceSettings.java
+++ b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/DepServiceSettings.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DepServiceSettings extends ClientSettings<DepServiceSettings> {
 
diff --git a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/NetworkServicesClient.java b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/NetworkServicesClient.java
index 00a59869cb0b..0c7003613a25 100644
--- a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/NetworkServicesClient.java
+++ b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/NetworkServicesClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1445,6 +1446,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkServicesClient implements BackgroundResource {
   private final NetworkServicesSettings settings;
diff --git a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/NetworkServicesSettings.java b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/NetworkServicesSettings.java
index 27e2743c5d9b..d402ae1059ac 100644
--- a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/NetworkServicesSettings.java
+++ b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/NetworkServicesSettings.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -138,6 +139,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkServicesSettings extends ClientSettings<NetworkServicesSettings> {
 
diff --git a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/DepServiceStub.java b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/DepServiceStub.java
index a013b7dc2cfd..9a4ea7a6c828 100644
--- a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/DepServiceStub.java
+++ b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/DepServiceStub.java
@@ -67,6 +67,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DepServiceStub implements BackgroundResource {
 
diff --git a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/DepServiceStubSettings.java b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/DepServiceStubSettings.java
index d0fd9613c61c..ed17f5bf5cc6 100644
--- a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/DepServiceStubSettings.java
+++ b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/DepServiceStubSettings.java
@@ -101,6 +101,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -177,6 +178,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DepServiceStubSettings extends StubSettings<DepServiceStubSettings> {
diff --git a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/GrpcDepServiceCallableFactory.java b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/GrpcDepServiceCallableFactory.java
index c9750f0bc731..260bd273dd4d 100644
--- a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/GrpcDepServiceCallableFactory.java
+++ b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/GrpcDepServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDepServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/GrpcDepServiceStub.java b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/GrpcDepServiceStub.java
index b4b7d2ccfb85..f34568c5ab61 100644
--- a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/GrpcDepServiceStub.java
+++ b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/GrpcDepServiceStub.java
@@ -76,6 +76,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDepServiceStub extends DepServiceStub {
   private static final MethodDescriptor<
diff --git a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/GrpcNetworkServicesCallableFactory.java b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/GrpcNetworkServicesCallableFactory.java
index 482cb1f8ecae..e7e6824dcd8d 100644
--- a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/GrpcNetworkServicesCallableFactory.java
+++ b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/GrpcNetworkServicesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNetworkServicesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/GrpcNetworkServicesStub.java b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/GrpcNetworkServicesStub.java
index 7b15319ff5fc..dd1646487e5c 100644
--- a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/GrpcNetworkServicesStub.java
+++ b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/GrpcNetworkServicesStub.java
@@ -149,6 +149,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNetworkServicesStub extends NetworkServicesStub {
   private static final MethodDescriptor<ListEndpointPoliciesRequest, ListEndpointPoliciesResponse>
diff --git a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/HttpJsonDepServiceCallableFactory.java b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/HttpJsonDepServiceCallableFactory.java
index d99e2e1929d8..b65a4a0fab39 100644
--- a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/HttpJsonDepServiceCallableFactory.java
+++ b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/HttpJsonDepServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDepServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/HttpJsonDepServiceStub.java b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/HttpJsonDepServiceStub.java
index 2ff430bce316..d5086367260c 100644
--- a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/HttpJsonDepServiceStub.java
+++ b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/HttpJsonDepServiceStub.java
@@ -87,6 +87,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -94,6 +95,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDepServiceStub extends DepServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/HttpJsonNetworkServicesCallableFactory.java b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/HttpJsonNetworkServicesCallableFactory.java
index 0f623fe86e4e..909da9611100 100644
--- a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/HttpJsonNetworkServicesCallableFactory.java
+++ b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/HttpJsonNetworkServicesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNetworkServicesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/HttpJsonNetworkServicesStub.java b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/HttpJsonNetworkServicesStub.java
index 72e58e3add30..163e0a6ce27f 100644
--- a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/HttpJsonNetworkServicesStub.java
+++ b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/HttpJsonNetworkServicesStub.java
@@ -160,6 +160,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNetworkServicesStub extends NetworkServicesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/NetworkServicesStub.java b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/NetworkServicesStub.java
index 2f9db30fa5d3..10a5b8bf4c91 100644
--- a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/NetworkServicesStub.java
+++ b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/NetworkServicesStub.java
@@ -140,6 +140,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NetworkServicesStub implements BackgroundResource {
 
diff --git a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/NetworkServicesStubSettings.java b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/NetworkServicesStubSettings.java
index b7fcf4a19ccf..371d64004911 100644
--- a/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/NetworkServicesStubSettings.java
+++ b/java-networkservices/google-cloud-networkservices/src/main/java/com/google/cloud/networkservices/v1/stub/NetworkServicesStubSettings.java
@@ -174,6 +174,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -252,6 +253,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NetworkServicesStubSettings extends StubSettings<NetworkServicesStubSettings> {
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/AgentGatewayName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/AgentGatewayName.java
index 0b6b363c82e2..6492a057b460 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/AgentGatewayName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/AgentGatewayName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AgentGatewayName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AGENT_GATEWAY =
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/AuthzExtensionName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/AuthzExtensionName.java
index 65ad85d3613e..a68524067fbe 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/AuthzExtensionName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/AuthzExtensionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AuthzExtensionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AUTHZ_EXTENSION =
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/EndpointPolicyName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/EndpointPolicyName.java
index 4d85daaa69fe..171a71b7678b 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/EndpointPolicyName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/EndpointPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EndpointPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENDPOINT_POLICY =
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/GatewayName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/GatewayName.java
index bf19f5c78ef1..6fa9bba603e7 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/GatewayName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/GatewayName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GatewayName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GATEWAY =
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/GatewayRouteViewName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/GatewayRouteViewName.java
index 8f074dc0eac8..12f9b857a018 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/GatewayRouteViewName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/GatewayRouteViewName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GatewayRouteViewName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GATEWAY_ROUTE_VIEW =
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/GrpcRouteName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/GrpcRouteName.java
index 14f89e1fd1b6..3bc5a1aa5c9f 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/GrpcRouteName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/GrpcRouteName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRouteName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GRPC_ROUTE =
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/HttpRouteName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/HttpRouteName.java
index 1cad44cab648..8a28f090501a 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/HttpRouteName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/HttpRouteName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpRouteName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_HTTP_ROUTE =
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/LbEdgeExtensionName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/LbEdgeExtensionName.java
index b0cd65f376a0..5a6c1dd256ef 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/LbEdgeExtensionName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/LbEdgeExtensionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LbEdgeExtensionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_LB_EDGE_EXTENSION =
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/LbRouteExtensionName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/LbRouteExtensionName.java
index 3529e7e22c6a..0514d9560b3d 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/LbRouteExtensionName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/LbRouteExtensionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LbRouteExtensionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_LB_ROUTE_EXTENSION =
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/LbTrafficExtensionName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/LbTrafficExtensionName.java
index 3cc4efdee00e..88bedd72fe37 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/LbTrafficExtensionName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/LbTrafficExtensionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LbTrafficExtensionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_LB_TRAFFIC_EXTENSION =
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/LocationName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/LocationName.java
index 7e213e15ff01..841b20b47b33 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/LocationName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/MeshName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/MeshName.java
index 46d48ea6d18b..36c1d56e40ae 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/MeshName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/MeshName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MeshName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MESH =
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/MeshRouteViewName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/MeshRouteViewName.java
index 31061b780cb2..9c569c03f811 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/MeshRouteViewName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/MeshRouteViewName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MeshRouteViewName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MESH_ROUTE_VIEW =
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/ServiceBindingName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/ServiceBindingName.java
index 40f2b92dbf80..1885acdd698d 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/ServiceBindingName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/ServiceBindingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceBindingName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE_BINDING =
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/ServiceLbPolicyName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/ServiceLbPolicyName.java
index 222ea7cf40d3..ae7513878a6f 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/ServiceLbPolicyName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/ServiceLbPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceLbPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE_LB_POLICY =
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/TcpRouteName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/TcpRouteName.java
index f69b81a545ca..36e371e29894 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/TcpRouteName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/TcpRouteName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TcpRouteName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TCP_ROUTE =
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/TlsRouteName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/TlsRouteName.java
index 9b77db1b035d..6f69b41294bb 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/TlsRouteName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/TlsRouteName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TlsRouteName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TLS_ROUTE =
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/WasmPluginName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/WasmPluginName.java
index c6b18395cea6..3d314bba95e9 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/WasmPluginName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/WasmPluginName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WasmPluginName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WASM_PLUGIN =
diff --git a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/WasmPluginVersionName.java b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/WasmPluginVersionName.java
index dc28eef2a6d6..8e805d5280bb 100644
--- a/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/WasmPluginVersionName.java
+++ b/java-networkservices/proto-google-cloud-networkservices-v1/src/main/java/com/google/cloud/networkservices/v1/WasmPluginVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WasmPluginVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WASM_PLUGIN_WASM_PLUGIN_VERSION =
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/ManagedNotebookServiceClient.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/ManagedNotebookServiceClient.java
index f987df38764c..8e5e71298965 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/ManagedNotebookServiceClient.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/ManagedNotebookServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -446,6 +447,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ManagedNotebookServiceClient implements BackgroundResource {
   private final ManagedNotebookServiceSettings settings;
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/ManagedNotebookServiceSettings.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/ManagedNotebookServiceSettings.java
index f8382fe62802..860a458922e6 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/ManagedNotebookServiceSettings.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/ManagedNotebookServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ManagedNotebookServiceSettings extends ClientSettings<ManagedNotebookServiceSettings> {
 
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/NotebookServiceClient.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/NotebookServiceClient.java
index 7c8a4302cd1b..5c3ad941be8e 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/NotebookServiceClient.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/NotebookServiceClient.java
@@ -45,6 +45,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -777,6 +778,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotebookServiceClient implements BackgroundResource {
   private final NotebookServiceSettings settings;
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/NotebookServiceSettings.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/NotebookServiceSettings.java
index 4136560522b3..ff72d8e22a6e 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/NotebookServiceSettings.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/NotebookServiceSettings.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotebookServiceSettings extends ClientSettings<NotebookServiceSettings> {
 
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/GrpcManagedNotebookServiceCallableFactory.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/GrpcManagedNotebookServiceCallableFactory.java
index ff4e8d82ff0c..3dd4f3ceb450 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/GrpcManagedNotebookServiceCallableFactory.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/GrpcManagedNotebookServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcManagedNotebookServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/GrpcManagedNotebookServiceStub.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/GrpcManagedNotebookServiceStub.java
index 8700428b1cb9..55a583ad4ae9 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/GrpcManagedNotebookServiceStub.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/GrpcManagedNotebookServiceStub.java
@@ -61,6 +61,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcManagedNotebookServiceStub extends ManagedNotebookServiceStub {
   private static final MethodDescriptor<ListRuntimesRequest, ListRuntimesResponse>
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/GrpcNotebookServiceCallableFactory.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/GrpcNotebookServiceCallableFactory.java
index 711977f2d967..32d9a225dd15 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/GrpcNotebookServiceCallableFactory.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/GrpcNotebookServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNotebookServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/GrpcNotebookServiceStub.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/GrpcNotebookServiceStub.java
index 8aafb625070a..a03a07cda478 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/GrpcNotebookServiceStub.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/GrpcNotebookServiceStub.java
@@ -93,6 +93,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNotebookServiceStub extends NotebookServiceStub {
   private static final MethodDescriptor<ListInstancesRequest, ListInstancesResponse>
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/ManagedNotebookServiceStub.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/ManagedNotebookServiceStub.java
index 35575596ee32..dcee3bab0127 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/ManagedNotebookServiceStub.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/ManagedNotebookServiceStub.java
@@ -52,6 +52,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ManagedNotebookServiceStub implements BackgroundResource {
 
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/ManagedNotebookServiceStubSettings.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/ManagedNotebookServiceStubSettings.java
index 9a51cec78fe6..5fdc0c79888e 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/ManagedNotebookServiceStubSettings.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/ManagedNotebookServiceStubSettings.java
@@ -82,6 +82,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -160,6 +161,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ManagedNotebookServiceStubSettings
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/NotebookServiceStub.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/NotebookServiceStub.java
index 36e5186cb1c6..7642cd8dea91 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/NotebookServiceStub.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/NotebookServiceStub.java
@@ -84,6 +84,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NotebookServiceStub implements BackgroundResource {
 
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/NotebookServiceStubSettings.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/NotebookServiceStubSettings.java
index a94874093ddf..fe83e0b00b19 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/NotebookServiceStubSettings.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1/stub/NotebookServiceStubSettings.java
@@ -114,6 +114,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -191,6 +192,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NotebookServiceStubSettings extends StubSettings<NotebookServiceStubSettings> {
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/NotebookServiceClient.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/NotebookServiceClient.java
index c5cc06152508..afc9651d47e6 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/NotebookServiceClient.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/NotebookServiceClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -475,6 +476,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class NotebookServiceClient implements BackgroundResource {
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/NotebookServiceSettings.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/NotebookServiceSettings.java
index 8b10c816c919..62dab36067a1 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/NotebookServiceSettings.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/NotebookServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class NotebookServiceSettings extends ClientSettings<NotebookServiceSettings> {
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/stub/GrpcNotebookServiceCallableFactory.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/stub/GrpcNotebookServiceCallableFactory.java
index 1cd7d79c29bf..0205141670b9 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/stub/GrpcNotebookServiceCallableFactory.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/stub/GrpcNotebookServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcNotebookServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/stub/GrpcNotebookServiceStub.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/stub/GrpcNotebookServiceStub.java
index 99a2c514ed1e..4751eea650fb 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/stub/GrpcNotebookServiceStub.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/stub/GrpcNotebookServiceStub.java
@@ -71,6 +71,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -78,6 +79,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcNotebookServiceStub extends NotebookServiceStub {
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/stub/NotebookServiceStub.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/stub/NotebookServiceStub.java
index 0c4439364233..885b3762f400 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/stub/NotebookServiceStub.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/stub/NotebookServiceStub.java
@@ -62,6 +62,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class NotebookServiceStub implements BackgroundResource {
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/stub/NotebookServiceStubSettings.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/stub/NotebookServiceStubSettings.java
index e763a20c74c4..39962fc97d72 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/stub/NotebookServiceStubSettings.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v1beta1/stub/NotebookServiceStubSettings.java
@@ -92,6 +92,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -169,6 +170,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/NotebookServiceClient.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/NotebookServiceClient.java
index 24836fc9828d..eeb60ece42be 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/NotebookServiceClient.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/NotebookServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -416,6 +417,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotebookServiceClient implements BackgroundResource {
   private final NotebookServiceSettings settings;
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/NotebookServiceSettings.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/NotebookServiceSettings.java
index 9494677c66eb..b810eeced422 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/NotebookServiceSettings.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/NotebookServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotebookServiceSettings extends ClientSettings<NotebookServiceSettings> {
 
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/GrpcNotebookServiceCallableFactory.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/GrpcNotebookServiceCallableFactory.java
index 0f9840fd7331..b14c578d7972 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/GrpcNotebookServiceCallableFactory.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/GrpcNotebookServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNotebookServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/GrpcNotebookServiceStub.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/GrpcNotebookServiceStub.java
index c227486ff60a..bc027ebeafb8 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/GrpcNotebookServiceStub.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/GrpcNotebookServiceStub.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNotebookServiceStub extends NotebookServiceStub {
   private static final MethodDescriptor<ListInstancesRequest, ListInstancesResponse>
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/HttpJsonNotebookServiceCallableFactory.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/HttpJsonNotebookServiceCallableFactory.java
index 081c9e277d33..8bf74b227f60 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/HttpJsonNotebookServiceCallableFactory.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/HttpJsonNotebookServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNotebookServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/HttpJsonNotebookServiceStub.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/HttpJsonNotebookServiceStub.java
index a9acf25c73c1..c1cfbbc0e8c6 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/HttpJsonNotebookServiceStub.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/HttpJsonNotebookServiceStub.java
@@ -71,6 +71,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -78,6 +79,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNotebookServiceStub extends NotebookServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/NotebookServiceStub.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/NotebookServiceStub.java
index ebf7d2bd770c..a9bc175e08e6 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/NotebookServiceStub.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/NotebookServiceStub.java
@@ -51,6 +51,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NotebookServiceStub implements BackgroundResource {
 
diff --git a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/NotebookServiceStubSettings.java b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/NotebookServiceStubSettings.java
index 069df64d5b82..c00f3a98292d 100644
--- a/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/NotebookServiceStubSettings.java
+++ b/java-notebooks/google-cloud-notebooks/src/main/java/com/google/cloud/notebooks/v2/stub/NotebookServiceStubSettings.java
@@ -85,6 +85,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -162,6 +163,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NotebookServiceStubSettings extends StubSettings<NotebookServiceStubSettings> {
diff --git a/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/ExecutionName.java b/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/ExecutionName.java
index 858a6d1299d5..d3da49f49f6a 100644
--- a/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/ExecutionName.java
+++ b/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/ExecutionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExecutionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_EXECUTION =
diff --git a/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/InstanceName.java b/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/InstanceName.java
index 5f6514b3d021..bb06e7432594 100644
--- a/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/InstanceName.java
+++ b/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE =
diff --git a/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/LocationName.java b/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/LocationName.java
index 6a1514618247..5d0a74c86ca6 100644
--- a/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/LocationName.java
+++ b/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/RuntimeName.java b/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/RuntimeName.java
index fafa77f695b3..65b1675d1e0a 100644
--- a/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/RuntimeName.java
+++ b/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/RuntimeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RuntimeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RUNTIME =
diff --git a/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/ScheduleName.java b/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/ScheduleName.java
index c721a12d56de..c0135e131f80 100644
--- a/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/ScheduleName.java
+++ b/java-notebooks/proto-google-cloud-notebooks-v1/src/main/java/com/google/cloud/notebooks/v1/ScheduleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ScheduleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SCHEDULE =
diff --git a/java-notebooks/proto-google-cloud-notebooks-v2/src/main/java/com/google/cloud/notebooks/v2/InstanceName.java b/java-notebooks/proto-google-cloud-notebooks-v2/src/main/java/com/google/cloud/notebooks/v2/InstanceName.java
index 6a672e64b7a2..450077de66ae 100644
--- a/java-notebooks/proto-google-cloud-notebooks-v2/src/main/java/com/google/cloud/notebooks/v2/InstanceName.java
+++ b/java-notebooks/proto-google-cloud-notebooks-v2/src/main/java/com/google/cloud/notebooks/v2/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-notebooks/proto-google-cloud-notebooks-v2/src/main/java/com/google/cloud/notebooks/v2/LocationName.java b/java-notebooks/proto-google-cloud-notebooks-v2/src/main/java/com/google/cloud/notebooks/v2/LocationName.java
index bf9ce9817d06..ee3d5158ba96 100644
--- a/java-notebooks/proto-google-cloud-notebooks-v2/src/main/java/com/google/cloud/notebooks/v2/LocationName.java
+++ b/java-notebooks/proto-google-cloud-notebooks-v2/src/main/java/com/google/cloud/notebooks/v2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/FleetRoutingClient.java b/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/FleetRoutingClient.java
index 82d29e9df99d..7da9423f8a5a 100644
--- a/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/FleetRoutingClient.java
+++ b/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/FleetRoutingClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -172,6 +173,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FleetRoutingClient implements BackgroundResource {
   private final FleetRoutingSettings settings;
diff --git a/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/FleetRoutingSettings.java b/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/FleetRoutingSettings.java
index a843005c3593..ca58918ad55e 100644
--- a/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/FleetRoutingSettings.java
+++ b/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/FleetRoutingSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FleetRoutingSettings extends ClientSettings<FleetRoutingSettings> {
 
diff --git a/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/FleetRoutingStub.java b/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/FleetRoutingStub.java
index c29eecb0ec25..7f63cffa0106 100644
--- a/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/FleetRoutingStub.java
+++ b/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/FleetRoutingStub.java
@@ -27,6 +27,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FleetRoutingStub implements BackgroundResource {
 
diff --git a/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/FleetRoutingStubSettings.java b/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/FleetRoutingStubSettings.java
index a5729915fa78..ab3b478023c9 100644
--- a/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/FleetRoutingStubSettings.java
+++ b/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/FleetRoutingStubSettings.java
@@ -54,6 +54,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FleetRoutingStubSettings extends StubSettings<FleetRoutingStubSettings> {
diff --git a/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/GrpcFleetRoutingCallableFactory.java b/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/GrpcFleetRoutingCallableFactory.java
index c9eec1752f2d..e89ac42a8b7e 100644
--- a/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/GrpcFleetRoutingCallableFactory.java
+++ b/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/GrpcFleetRoutingCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFleetRoutingCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/GrpcFleetRoutingStub.java b/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/GrpcFleetRoutingStub.java
index a211541dec26..b1453383fb5b 100644
--- a/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/GrpcFleetRoutingStub.java
+++ b/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/GrpcFleetRoutingStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFleetRoutingStub extends FleetRoutingStub {
   private static final MethodDescriptor<OptimizeToursRequest, OptimizeToursResponse>
diff --git a/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/HttpJsonFleetRoutingCallableFactory.java b/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/HttpJsonFleetRoutingCallableFactory.java
index 92c453778baf..d1d956e04e2b 100644
--- a/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/HttpJsonFleetRoutingCallableFactory.java
+++ b/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/HttpJsonFleetRoutingCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFleetRoutingCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/HttpJsonFleetRoutingStub.java b/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/HttpJsonFleetRoutingStub.java
index 1acfb262427c..59a13facbb58 100644
--- a/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/HttpJsonFleetRoutingStub.java
+++ b/java-optimization/google-cloud-optimization/src/main/java/com/google/cloud/optimization/v1/stub/HttpJsonFleetRoutingStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFleetRoutingStub extends FleetRoutingStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/OracleDatabaseClient.java b/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/OracleDatabaseClient.java
index d3422c24b82b..036de1a81b2b 100644
--- a/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/OracleDatabaseClient.java
+++ b/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/OracleDatabaseClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1690,6 +1691,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OracleDatabaseClient implements BackgroundResource {
   private final OracleDatabaseSettings settings;
diff --git a/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/OracleDatabaseSettings.java b/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/OracleDatabaseSettings.java
index a9fc48da78e3..4e018f662b70 100644
--- a/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/OracleDatabaseSettings.java
+++ b/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/OracleDatabaseSettings.java
@@ -70,6 +70,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OracleDatabaseSettings extends ClientSettings<OracleDatabaseSettings> {
 
diff --git a/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/GrpcOracleDatabaseCallableFactory.java b/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/GrpcOracleDatabaseCallableFactory.java
index 512b72377037..cb7a28e9ea39 100644
--- a/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/GrpcOracleDatabaseCallableFactory.java
+++ b/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/GrpcOracleDatabaseCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOracleDatabaseCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/GrpcOracleDatabaseStub.java b/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/GrpcOracleDatabaseStub.java
index 7a5c437ec7f2..6657693d546d 100644
--- a/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/GrpcOracleDatabaseStub.java
+++ b/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/GrpcOracleDatabaseStub.java
@@ -189,6 +189,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -196,6 +197,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOracleDatabaseStub extends OracleDatabaseStub {
   private static final MethodDescriptor<
diff --git a/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/HttpJsonOracleDatabaseCallableFactory.java b/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/HttpJsonOracleDatabaseCallableFactory.java
index 77d41e81e278..a8cbbe039a7c 100644
--- a/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/HttpJsonOracleDatabaseCallableFactory.java
+++ b/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/HttpJsonOracleDatabaseCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOracleDatabaseCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/HttpJsonOracleDatabaseStub.java b/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/HttpJsonOracleDatabaseStub.java
index 880d737009ce..b9708d5597d5 100644
--- a/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/HttpJsonOracleDatabaseStub.java
+++ b/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/HttpJsonOracleDatabaseStub.java
@@ -200,6 +200,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -207,6 +208,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOracleDatabaseStub extends OracleDatabaseStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/OracleDatabaseStub.java b/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/OracleDatabaseStub.java
index 0a91648b63ac..d108f86c2a31 100644
--- a/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/OracleDatabaseStub.java
+++ b/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/OracleDatabaseStub.java
@@ -180,6 +180,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -187,6 +188,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class OracleDatabaseStub implements BackgroundResource {
 
diff --git a/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/OracleDatabaseStubSettings.java b/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/OracleDatabaseStubSettings.java
index 463ae4ed964f..f4296b635f5f 100644
--- a/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/OracleDatabaseStubSettings.java
+++ b/java-oracledatabase/google-cloud-oracledatabase/src/main/java/com/google/cloud/oracledatabase/v1/stub/OracleDatabaseStubSettings.java
@@ -230,6 +230,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -308,6 +309,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class OracleDatabaseStubSettings extends StubSettings<OracleDatabaseStubSettings> {
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/AutonomousDatabaseBackupName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/AutonomousDatabaseBackupName.java
index 642892027e41..6405545f0ccc 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/AutonomousDatabaseBackupName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/AutonomousDatabaseBackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutonomousDatabaseBackupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AUTONOMOUS_DATABASE_BACKUP =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/AutonomousDatabaseCharacterSetName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/AutonomousDatabaseCharacterSetName.java
index f1c90ce9b11c..546d78f73436 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/AutonomousDatabaseCharacterSetName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/AutonomousDatabaseCharacterSetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutonomousDatabaseCharacterSetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AUTONOMOUS_DATABASE_CHARACTER_SET =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/AutonomousDatabaseName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/AutonomousDatabaseName.java
index 4b92197a0e07..fb638dc8699f 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/AutonomousDatabaseName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/AutonomousDatabaseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutonomousDatabaseName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AUTONOMOUS_DATABASE =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/AutonomousDbVersionName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/AutonomousDbVersionName.java
index f927d5423c26..544ecc3c75ed 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/AutonomousDbVersionName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/AutonomousDbVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutonomousDbVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_AUTONOMOUS_DB_VERSION =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/CloudExadataInfrastructureName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/CloudExadataInfrastructureName.java
index abe9d4544923..f4572db16f34 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/CloudExadataInfrastructureName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/CloudExadataInfrastructureName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudExadataInfrastructureName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLOUD_EXADATA_INFRASTRUCTURE =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/CloudVmClusterName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/CloudVmClusterName.java
index d79b6806c4bc..31ef8bd405cc 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/CloudVmClusterName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/CloudVmClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudVmClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLOUD_VM_CLUSTER =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DatabaseCharacterSetName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DatabaseCharacterSetName.java
index eda8c7efeb29..78167fe81003 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DatabaseCharacterSetName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DatabaseCharacterSetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatabaseCharacterSetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATABASE_CHARACTER_SET =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DatabaseName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DatabaseName.java
index c9ca8ae7f20b..9d787eab3b39 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DatabaseName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DatabaseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatabaseName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATABASE =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbNodeName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbNodeName.java
index c3686377b79d..68528f18c089 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbNodeName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbNodeName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DbNodeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLOUD_VM_CLUSTER_DB_NODE =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbServerName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbServerName.java
index ffa9010fc49a..516ff63abe74 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbServerName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbServerName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DbServerName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLOUD_EXADATA_INFRASTRUCTURE_DB_SERVER =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbSystemInitialStorageSizeName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbSystemInitialStorageSizeName.java
index bfd85f460230..37c81ce2c43d 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbSystemInitialStorageSizeName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbSystemInitialStorageSizeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DbSystemInitialStorageSizeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DB_SYSTEM_INITIAL_STORAGE_SIZE =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbSystemName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbSystemName.java
index 6235eb167ded..07bc793f49ab 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbSystemName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbSystemName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DbSystemName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DB_SYSTEM =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbSystemShapeName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbSystemShapeName.java
index 8712ee1f997c..acba6b5c8daf 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbSystemShapeName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbSystemShapeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DbSystemShapeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DB_SYSTEM_SHAPE =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbVersionName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbVersionName.java
index 5073f60eed16..8afb27d26104 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbVersionName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/DbVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DbVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DB_VERSION =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/EntitlementName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/EntitlementName.java
index 6096ec52c51d..e4c14be026f0 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/EntitlementName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/EntitlementName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntitlementName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENTITLEMENT =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/ExadbVmClusterName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/ExadbVmClusterName.java
index dc016a262784..1c630440417c 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/ExadbVmClusterName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/ExadbVmClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExadbVmClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_EXADB_VM_CLUSTER =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/ExascaleDbStorageVaultName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/ExascaleDbStorageVaultName.java
index 4aa89e08e238..ed43af3b5c5c 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/ExascaleDbStorageVaultName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/ExascaleDbStorageVaultName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExascaleDbStorageVaultName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_EXASCALE_DB_STORAGE_VAULT =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GiVersionName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GiVersionName.java
index 259330543602..6ab3c6030551 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GiVersionName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GiVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GiVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GI_VERSION =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateConnectionAssignmentName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateConnectionAssignmentName.java
index 7fab6a057ba3..5ade039b559f 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateConnectionAssignmentName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateConnectionAssignmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GoldengateConnectionAssignmentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GOLDENGATE_CONNECTION_ASSIGNMENT =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateConnectionName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateConnectionName.java
index 69f120a7c75a..8ebdeea20b90 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateConnectionName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateConnectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GoldengateConnectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GOLDENGATE_CONNECTION =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateConnectionTypeName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateConnectionTypeName.java
index b4577a3229d6..8d953674e6a8 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateConnectionTypeName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateConnectionTypeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GoldengateConnectionTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GOLDENGATE_CONNECTION_TYPE =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateDeploymentEnvironmentName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateDeploymentEnvironmentName.java
index ea254085daf8..55b4898c340f 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateDeploymentEnvironmentName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateDeploymentEnvironmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GoldengateDeploymentEnvironmentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GOLDENGATE_DEPLOYMENT_ENVIRONMENT =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateDeploymentName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateDeploymentName.java
index d33a9ae796b8..7fed40fa6844 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateDeploymentName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateDeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GoldengateDeploymentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GOLDENGATE_DEPLOYMENT =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateDeploymentTypeName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateDeploymentTypeName.java
index 5f2feabe3fdc..cba51960a3d2 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateDeploymentTypeName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateDeploymentTypeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GoldengateDeploymentTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GOLDENGATE_DEPLOYMENT_TYPE =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateDeploymentVersionName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateDeploymentVersionName.java
index 5289fca14c34..97dd49a8d4ad 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateDeploymentVersionName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/GoldengateDeploymentVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GoldengateDeploymentVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GOLDENGATE_DEPLOYMENT_VERSION =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/LocationName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/LocationName.java
index 44bedca6d411..e9b5d04d077b 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/LocationName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/MinorVersionName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/MinorVersionName.java
index c1d00ea65dee..8f9f6ea615b1 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/MinorVersionName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/MinorVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MinorVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GI_VERSION_MINOR_VERSION =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/OdbNetworkName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/OdbNetworkName.java
index 8452c7ec839d..8140a7e4d538 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/OdbNetworkName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/OdbNetworkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OdbNetworkName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ODB_NETWORK =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/OdbSubnetName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/OdbSubnetName.java
index a1bf6038a57f..11ef7f4071bf 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/OdbSubnetName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/OdbSubnetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OdbSubnetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ODB_NETWORK_ODB_SUBNET =
diff --git a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/PluggableDatabaseName.java b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/PluggableDatabaseName.java
index 18cebd520e2c..b610e52e9af2 100644
--- a/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/PluggableDatabaseName.java
+++ b/java-oracledatabase/proto-google-cloud-oracledatabase-v1/src/main/java/com/google/cloud/oracledatabase/v1/PluggableDatabaseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PluggableDatabaseName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PLUGGABLE_DATABASE =
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/EnvironmentsClient.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/EnvironmentsClient.java
index fb8887b1efd6..fd1210e02dea 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/EnvironmentsClient.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/EnvironmentsClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -556,6 +557,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EnvironmentsClient implements BackgroundResource {
   private final EnvironmentsSettings settings;
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/EnvironmentsSettings.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/EnvironmentsSettings.java
index 2035dabeefb2..fcfe34412a61 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/EnvironmentsSettings.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/EnvironmentsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EnvironmentsSettings extends ClientSettings<EnvironmentsSettings> {
 
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/ImageVersionsClient.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/ImageVersionsClient.java
index d440dbfc3865..5f0030529f7d 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/ImageVersionsClient.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/ImageVersionsClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ImageVersionsClient implements BackgroundResource {
   private final ImageVersionsSettings settings;
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/ImageVersionsSettings.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/ImageVersionsSettings.java
index ffed74f631e1..482d67c171ce 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/ImageVersionsSettings.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/ImageVersionsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ImageVersionsSettings extends ClientSettings<ImageVersionsSettings> {
 
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/EnvironmentsStub.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/EnvironmentsStub.java
index 602e83566aaa..db2e3801c314 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/EnvironmentsStub.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/EnvironmentsStub.java
@@ -68,6 +68,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EnvironmentsStub implements BackgroundResource {
 
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/EnvironmentsStubSettings.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/EnvironmentsStubSettings.java
index 18ce03a08903..0498ed0e9be2 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/EnvironmentsStubSettings.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/EnvironmentsStubSettings.java
@@ -102,6 +102,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -179,6 +180,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EnvironmentsStubSettings extends StubSettings<EnvironmentsStubSettings> {
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/GrpcEnvironmentsCallableFactory.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/GrpcEnvironmentsCallableFactory.java
index d731f5b00d67..1a63c670ba3b 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/GrpcEnvironmentsCallableFactory.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/GrpcEnvironmentsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEnvironmentsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/GrpcEnvironmentsStub.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/GrpcEnvironmentsStub.java
index 65f9d5899166..f5ce9bd2010d 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/GrpcEnvironmentsStub.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/GrpcEnvironmentsStub.java
@@ -77,6 +77,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEnvironmentsStub extends EnvironmentsStub {
   private static final MethodDescriptor<CreateEnvironmentRequest, Operation>
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/GrpcImageVersionsCallableFactory.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/GrpcImageVersionsCallableFactory.java
index 8cbe7f04af1b..323cc54d0735 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/GrpcImageVersionsCallableFactory.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/GrpcImageVersionsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcImageVersionsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/GrpcImageVersionsStub.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/GrpcImageVersionsStub.java
index 1fc5f84a0918..5f8655d4a8af 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/GrpcImageVersionsStub.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/GrpcImageVersionsStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcImageVersionsStub extends ImageVersionsStub {
   private static final MethodDescriptor<ListImageVersionsRequest, ListImageVersionsResponse>
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/HttpJsonEnvironmentsCallableFactory.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/HttpJsonEnvironmentsCallableFactory.java
index aaae643b1b02..a24b7836fb13 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/HttpJsonEnvironmentsCallableFactory.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/HttpJsonEnvironmentsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEnvironmentsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/HttpJsonEnvironmentsStub.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/HttpJsonEnvironmentsStub.java
index f5ebae00627e..e88cca0cbe04 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/HttpJsonEnvironmentsStub.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/HttpJsonEnvironmentsStub.java
@@ -88,6 +88,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -95,6 +96,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEnvironmentsStub extends EnvironmentsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/HttpJsonImageVersionsCallableFactory.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/HttpJsonImageVersionsCallableFactory.java
index 2044c4fca6a8..f27e6eb0dde6 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/HttpJsonImageVersionsCallableFactory.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/HttpJsonImageVersionsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonImageVersionsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/HttpJsonImageVersionsStub.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/HttpJsonImageVersionsStub.java
index 8a060daae21e..6e04658aa908 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/HttpJsonImageVersionsStub.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/HttpJsonImageVersionsStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonImageVersionsStub extends ImageVersionsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/ImageVersionsStub.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/ImageVersionsStub.java
index be7ae9b704e4..81683512e1cd 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/ImageVersionsStub.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/ImageVersionsStub.java
@@ -23,6 +23,7 @@
 import com.google.cloud.orchestration.airflow.service.v1.ListImageVersionsRequest;
 import com.google.cloud.orchestration.airflow.service.v1.ListImageVersionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ImageVersionsStub implements BackgroundResource {
 
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/ImageVersionsStubSettings.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/ImageVersionsStubSettings.java
index cf409f5f7a80..1c7d78407ece 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/ImageVersionsStubSettings.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1/stub/ImageVersionsStubSettings.java
@@ -55,6 +55,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -106,6 +107,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ImageVersionsStubSettings extends StubSettings<ImageVersionsStubSettings> {
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/EnvironmentsClient.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/EnvironmentsClient.java
index 5ed4d5e7e081..a6b8f3f4c82b 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/EnvironmentsClient.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/EnvironmentsClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -571,6 +572,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EnvironmentsClient implements BackgroundResource {
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/EnvironmentsSettings.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/EnvironmentsSettings.java
index 3061d63a499e..b4365d09dc4e 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/EnvironmentsSettings.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/EnvironmentsSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EnvironmentsSettings extends ClientSettings<EnvironmentsSettings> {
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/ImageVersionsClient.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/ImageVersionsClient.java
index 0b74208ce827..194fd281482f 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/ImageVersionsClient.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/ImageVersionsClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -138,6 +139,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ImageVersionsClient implements BackgroundResource {
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/ImageVersionsSettings.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/ImageVersionsSettings.java
index 14acafd1bda6..381df84c2650 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/ImageVersionsSettings.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/ImageVersionsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ImageVersionsSettings extends ClientSettings<ImageVersionsSettings> {
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/EnvironmentsStub.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/EnvironmentsStub.java
index 73c3790e746e..7122a6631a72 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/EnvironmentsStub.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/EnvironmentsStub.java
@@ -70,6 +70,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class EnvironmentsStub implements BackgroundResource {
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/EnvironmentsStubSettings.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/EnvironmentsStubSettings.java
index d4324d9184d2..15b4ebd3374e 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/EnvironmentsStubSettings.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/EnvironmentsStubSettings.java
@@ -103,6 +103,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -180,6 +181,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/GrpcEnvironmentsCallableFactory.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/GrpcEnvironmentsCallableFactory.java
index 4132e931dcb1..03b7e603b727 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/GrpcEnvironmentsCallableFactory.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/GrpcEnvironmentsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEnvironmentsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/GrpcEnvironmentsStub.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/GrpcEnvironmentsStub.java
index 13ae24913e63..18e68c01825b 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/GrpcEnvironmentsStub.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/GrpcEnvironmentsStub.java
@@ -79,6 +79,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEnvironmentsStub extends EnvironmentsStub {
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/GrpcImageVersionsCallableFactory.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/GrpcImageVersionsCallableFactory.java
index 84aa417cdba9..528d357c50b2 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/GrpcImageVersionsCallableFactory.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/GrpcImageVersionsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcImageVersionsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/GrpcImageVersionsStub.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/GrpcImageVersionsStub.java
index 840f08c30c27..8a3cebb3b3a5 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/GrpcImageVersionsStub.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/GrpcImageVersionsStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcImageVersionsStub extends ImageVersionsStub {
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/HttpJsonEnvironmentsCallableFactory.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/HttpJsonEnvironmentsCallableFactory.java
index 451f54dd7118..bd5237d302c6 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/HttpJsonEnvironmentsCallableFactory.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/HttpJsonEnvironmentsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEnvironmentsCallableFactory
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/HttpJsonEnvironmentsStub.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/HttpJsonEnvironmentsStub.java
index 15fce8dc13c6..fd152259e124 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/HttpJsonEnvironmentsStub.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/HttpJsonEnvironmentsStub.java
@@ -90,6 +90,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEnvironmentsStub extends EnvironmentsStub {
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/HttpJsonImageVersionsCallableFactory.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/HttpJsonImageVersionsCallableFactory.java
index 5dff53d316ce..460574ea7025 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/HttpJsonImageVersionsCallableFactory.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/HttpJsonImageVersionsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonImageVersionsCallableFactory
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/HttpJsonImageVersionsStub.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/HttpJsonImageVersionsStub.java
index c5840d8fe6b4..e7c4097fb068 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/HttpJsonImageVersionsStub.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/HttpJsonImageVersionsStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonImageVersionsStub extends ImageVersionsStub {
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/ImageVersionsStub.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/ImageVersionsStub.java
index 4686d935f1d1..5b407db5bd79 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/ImageVersionsStub.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/ImageVersionsStub.java
@@ -24,6 +24,7 @@
 import com.google.cloud.orchestration.airflow.service.v1beta1.ListImageVersionsRequest;
 import com.google.cloud.orchestration.airflow.service.v1beta1.ListImageVersionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ImageVersionsStub implements BackgroundResource {
diff --git a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/ImageVersionsStubSettings.java b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/ImageVersionsStubSettings.java
index b80e77e22255..0815c7e28135 100644
--- a/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/ImageVersionsStubSettings.java
+++ b/java-orchestration-airflow/google-cloud-orchestration-airflow/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/stub/ImageVersionsStubSettings.java
@@ -55,6 +55,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -106,6 +107,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1/src/main/java/com/google/cloud/orchestration/airflow/service/v1/EnvironmentName.java b/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1/src/main/java/com/google/cloud/orchestration/airflow/service/v1/EnvironmentName.java
index 2b4fb0fde9ff..9b02586df638 100644
--- a/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1/src/main/java/com/google/cloud/orchestration/airflow/service/v1/EnvironmentName.java
+++ b/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1/src/main/java/com/google/cloud/orchestration/airflow/service/v1/EnvironmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EnvironmentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENVIRONMENT =
diff --git a/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1/src/main/java/com/google/cloud/orchestration/airflow/service/v1/UserWorkloadsConfigMapName.java b/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1/src/main/java/com/google/cloud/orchestration/airflow/service/v1/UserWorkloadsConfigMapName.java
index 70174ebe933b..e8aa0d0524b4 100644
--- a/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1/src/main/java/com/google/cloud/orchestration/airflow/service/v1/UserWorkloadsConfigMapName.java
+++ b/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1/src/main/java/com/google/cloud/orchestration/airflow/service/v1/UserWorkloadsConfigMapName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserWorkloadsConfigMapName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENVIRONMENT_USER_WORKLOADS_CONFIG_MAP =
diff --git a/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1/src/main/java/com/google/cloud/orchestration/airflow/service/v1/UserWorkloadsSecretName.java b/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1/src/main/java/com/google/cloud/orchestration/airflow/service/v1/UserWorkloadsSecretName.java
index 8bf2cc35be3b..26b74f81cf4e 100644
--- a/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1/src/main/java/com/google/cloud/orchestration/airflow/service/v1/UserWorkloadsSecretName.java
+++ b/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1/src/main/java/com/google/cloud/orchestration/airflow/service/v1/UserWorkloadsSecretName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserWorkloadsSecretName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENVIRONMENT_USER_WORKLOADS_SECRET =
diff --git a/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1beta1/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/EnvironmentName.java b/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1beta1/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/EnvironmentName.java
index 65124d606cab..fd2002559897 100644
--- a/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1beta1/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/EnvironmentName.java
+++ b/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1beta1/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/EnvironmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EnvironmentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENVIRONMENT =
diff --git a/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1beta1/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/UserWorkloadsConfigMapName.java b/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1beta1/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/UserWorkloadsConfigMapName.java
index 5f620ef39f7c..d084fff245fb 100644
--- a/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1beta1/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/UserWorkloadsConfigMapName.java
+++ b/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1beta1/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/UserWorkloadsConfigMapName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserWorkloadsConfigMapName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENVIRONMENT_USER_WORKLOADS_CONFIG_MAP =
diff --git a/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1beta1/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/UserWorkloadsSecretName.java b/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1beta1/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/UserWorkloadsSecretName.java
index 1321087831be..0e3ce69485de 100644
--- a/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1beta1/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/UserWorkloadsSecretName.java
+++ b/java-orchestration-airflow/proto-google-cloud-orchestration-airflow-v1beta1/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/UserWorkloadsSecretName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserWorkloadsSecretName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENVIRONMENT_USER_WORKLOADS_SECRET =
diff --git a/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/OrgPolicyClient.java b/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/OrgPolicyClient.java
index fd93b7c1c631..1536f91029cc 100644
--- a/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/OrgPolicyClient.java
+++ b/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/OrgPolicyClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -376,6 +377,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrgPolicyClient implements BackgroundResource {
   private final OrgPolicySettings settings;
diff --git a/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/OrgPolicySettings.java b/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/OrgPolicySettings.java
index 8fc922e072b8..9484b3ceb6ba 100644
--- a/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/OrgPolicySettings.java
+++ b/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/OrgPolicySettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrgPolicySettings extends ClientSettings<OrgPolicySettings> {
 
diff --git a/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/GrpcOrgPolicyCallableFactory.java b/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/GrpcOrgPolicyCallableFactory.java
index f7089cbf56e0..ed58def058e0 100644
--- a/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/GrpcOrgPolicyCallableFactory.java
+++ b/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/GrpcOrgPolicyCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOrgPolicyCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/GrpcOrgPolicyStub.java b/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/GrpcOrgPolicyStub.java
index ecf40f85ad7a..15ef220a37e1 100644
--- a/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/GrpcOrgPolicyStub.java
+++ b/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/GrpcOrgPolicyStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOrgPolicyStub extends OrgPolicyStub {
   private static final MethodDescriptor<ListConstraintsRequest, ListConstraintsResponse>
diff --git a/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/HttpJsonOrgPolicyCallableFactory.java b/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/HttpJsonOrgPolicyCallableFactory.java
index 329edc4ee11c..d9d5637fa74e 100644
--- a/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/HttpJsonOrgPolicyCallableFactory.java
+++ b/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/HttpJsonOrgPolicyCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOrgPolicyCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/HttpJsonOrgPolicyStub.java b/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/HttpJsonOrgPolicyStub.java
index fc386d5c7dd4..00cc62328464 100644
--- a/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/HttpJsonOrgPolicyStub.java
+++ b/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/HttpJsonOrgPolicyStub.java
@@ -58,6 +58,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOrgPolicyStub extends OrgPolicyStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/OrgPolicyStub.java b/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/OrgPolicyStub.java
index 1da5d700ac05..0ca8b54f7f0b 100644
--- a/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/OrgPolicyStub.java
+++ b/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/OrgPolicyStub.java
@@ -41,6 +41,7 @@
 import com.google.cloud.orgpolicy.v2.UpdatePolicyRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class OrgPolicyStub implements BackgroundResource {
 
diff --git a/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/OrgPolicyStubSettings.java b/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/OrgPolicyStubSettings.java
index 45dfa61d3ac5..56b70646a29f 100644
--- a/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/OrgPolicyStubSettings.java
+++ b/java-orgpolicy/google-cloud-orgpolicy/src/main/java/com/google/cloud/orgpolicy/v2/stub/OrgPolicyStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class OrgPolicyStubSettings extends StubSettings<OrgPolicyStubSettings> {
diff --git a/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/ConstraintName.java b/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/ConstraintName.java
index 7ef6253ff303..a28b55d5574d 100644
--- a/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/ConstraintName.java
+++ b/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/ConstraintName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConstraintName implements ResourceName {
   private static final PathTemplate PROJECT_CONSTRAINT =
diff --git a/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/CustomConstraintName.java b/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/CustomConstraintName.java
index 00f1b3c2bd07..1b577f8afc9d 100644
--- a/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/CustomConstraintName.java
+++ b/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/CustomConstraintName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomConstraintName implements ResourceName {
   private static final PathTemplate ORGANIZATION_CUSTOM_CONSTRAINT =
diff --git a/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/FolderName.java b/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/FolderName.java
index 26bd88c723e2..7d20eb57a4dd 100644
--- a/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/FolderName.java
+++ b/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/FolderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderName implements ResourceName {
   private static final PathTemplate FOLDER =
diff --git a/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/OrganizationName.java b/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/OrganizationName.java
index b1a59e647b5c..0338c8ea2ae9 100644
--- a/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/OrganizationName.java
+++ b/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/PolicyName.java b/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/PolicyName.java
index b260101aa163..7092820d06c6 100644
--- a/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/PolicyName.java
+++ b/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/PolicyName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyName implements ResourceName {
   private static final PathTemplate PROJECT_POLICY =
diff --git a/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/ProjectName.java b/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/ProjectName.java
index 5a78e63f4f7a..27bf5f738fa1 100644
--- a/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/ProjectName.java
+++ b/java-orgpolicy/proto-google-cloud-orgpolicy-v2/src/main/java/com/google/cloud/orgpolicy/v2/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/OsConfigServiceClient.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/OsConfigServiceClient.java
index 1b71769720ac..db8e4b88b221 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/OsConfigServiceClient.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/OsConfigServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -355,6 +356,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OsConfigServiceClient implements BackgroundResource {
   private final OsConfigServiceSettings settings;
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/OsConfigServiceSettings.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/OsConfigServiceSettings.java
index eac00385e85a..b6ec75075779 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/OsConfigServiceSettings.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/OsConfigServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OsConfigServiceSettings extends ClientSettings<OsConfigServiceSettings> {
 
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/OsConfigZonalServiceClient.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/OsConfigZonalServiceClient.java
index 90db8e16cc43..7d77ec5e6686 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/OsConfigZonalServiceClient.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/OsConfigZonalServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -379,6 +380,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OsConfigZonalServiceClient implements BackgroundResource {
   private final OsConfigZonalServiceSettings settings;
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/OsConfigZonalServiceSettings.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/OsConfigZonalServiceSettings.java
index 8a685d41724e..668c08bd6faa 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/OsConfigZonalServiceSettings.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/OsConfigZonalServiceSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OsConfigZonalServiceSettings extends ClientSettings<OsConfigZonalServiceSettings> {
 
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/GrpcOsConfigServiceCallableFactory.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/GrpcOsConfigServiceCallableFactory.java
index 052aa872e6bb..b4d177d291fb 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/GrpcOsConfigServiceCallableFactory.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/GrpcOsConfigServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOsConfigServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/GrpcOsConfigServiceStub.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/GrpcOsConfigServiceStub.java
index da5b0bed7d06..c216a06f0543 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/GrpcOsConfigServiceStub.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/GrpcOsConfigServiceStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOsConfigServiceStub extends OsConfigServiceStub {
   private static final MethodDescriptor<PatchJobs.ExecutePatchJobRequest, PatchJobs.PatchJob>
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/GrpcOsConfigZonalServiceCallableFactory.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/GrpcOsConfigZonalServiceCallableFactory.java
index 2f528f84189d..777bbbf81395 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/GrpcOsConfigZonalServiceCallableFactory.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/GrpcOsConfigZonalServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOsConfigZonalServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/GrpcOsConfigZonalServiceStub.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/GrpcOsConfigZonalServiceStub.java
index 905d05e820e9..23afa6d369cc 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/GrpcOsConfigZonalServiceStub.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/GrpcOsConfigZonalServiceStub.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOsConfigZonalServiceStub extends OsConfigZonalServiceStub {
   private static final MethodDescriptor<CreateOSPolicyAssignmentRequest, Operation>
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/HttpJsonOsConfigServiceCallableFactory.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/HttpJsonOsConfigServiceCallableFactory.java
index 7ce5be6b5fa7..02e98028af9b 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/HttpJsonOsConfigServiceCallableFactory.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/HttpJsonOsConfigServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOsConfigServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/HttpJsonOsConfigServiceStub.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/HttpJsonOsConfigServiceStub.java
index 788f34e12320..26132e99de71 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/HttpJsonOsConfigServiceStub.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/HttpJsonOsConfigServiceStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOsConfigServiceStub extends OsConfigServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/HttpJsonOsConfigZonalServiceCallableFactory.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/HttpJsonOsConfigZonalServiceCallableFactory.java
index b8aeba20c623..a910aed7ed22 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/HttpJsonOsConfigZonalServiceCallableFactory.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/HttpJsonOsConfigZonalServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOsConfigZonalServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/HttpJsonOsConfigZonalServiceStub.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/HttpJsonOsConfigZonalServiceStub.java
index b813731417dd..94fa04a93380 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/HttpJsonOsConfigZonalServiceStub.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/HttpJsonOsConfigZonalServiceStub.java
@@ -71,6 +71,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -78,6 +79,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOsConfigZonalServiceStub extends OsConfigZonalServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/OsConfigServiceStub.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/OsConfigServiceStub.java
index 75230f3dc31a..cdc53e2b520a 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/OsConfigServiceStub.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/OsConfigServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.cloud.osconfig.v1.PatchJobs;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class OsConfigServiceStub implements BackgroundResource {
 
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/OsConfigServiceStubSettings.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/OsConfigServiceStubSettings.java
index ff026bd82578..164d098eae85 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/OsConfigServiceStubSettings.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/OsConfigServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class OsConfigServiceStubSettings extends StubSettings<OsConfigServiceStubSettings> {
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/OsConfigZonalServiceStub.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/OsConfigZonalServiceStub.java
index c5818e33d1b5..538c3d9af582 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/OsConfigZonalServiceStub.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/OsConfigZonalServiceStub.java
@@ -51,6 +51,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class OsConfigZonalServiceStub implements BackgroundResource {
 
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/OsConfigZonalServiceStubSettings.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/OsConfigZonalServiceStubSettings.java
index ea2c23911f56..282582e85699 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/OsConfigZonalServiceStubSettings.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1/stub/OsConfigZonalServiceStubSettings.java
@@ -85,6 +85,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -163,6 +164,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class OsConfigZonalServiceStubSettings
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/OsConfigZonalServiceClient.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/OsConfigZonalServiceClient.java
index 6db40c9c0f83..5a9dc273798a 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/OsConfigZonalServiceClient.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/OsConfigZonalServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -418,6 +419,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class OsConfigZonalServiceClient implements BackgroundResource {
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/OsConfigZonalServiceSettings.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/OsConfigZonalServiceSettings.java
index d58be7b84b1b..bc6e5f90825e 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/OsConfigZonalServiceSettings.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/OsConfigZonalServiceSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class OsConfigZonalServiceSettings extends ClientSettings<OsConfigZonalServiceSettings> {
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/GrpcOsConfigZonalServiceCallableFactory.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/GrpcOsConfigZonalServiceCallableFactory.java
index 9ad9b42c2afa..3faa8e7691a0 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/GrpcOsConfigZonalServiceCallableFactory.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/GrpcOsConfigZonalServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcOsConfigZonalServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/GrpcOsConfigZonalServiceStub.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/GrpcOsConfigZonalServiceStub.java
index 54e6a217b440..035acc2310f1 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/GrpcOsConfigZonalServiceStub.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/GrpcOsConfigZonalServiceStub.java
@@ -66,6 +66,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcOsConfigZonalServiceStub extends OsConfigZonalServiceStub {
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/HttpJsonOsConfigZonalServiceCallableFactory.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/HttpJsonOsConfigZonalServiceCallableFactory.java
index ac8a9903ed18..40210daf124d 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/HttpJsonOsConfigZonalServiceCallableFactory.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/HttpJsonOsConfigZonalServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonOsConfigZonalServiceCallableFactory
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/HttpJsonOsConfigZonalServiceStub.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/HttpJsonOsConfigZonalServiceStub.java
index a440ee059d4b..94648d924ee1 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/HttpJsonOsConfigZonalServiceStub.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/HttpJsonOsConfigZonalServiceStub.java
@@ -77,6 +77,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonOsConfigZonalServiceStub extends OsConfigZonalServiceStub {
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/OsConfigZonalServiceStub.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/OsConfigZonalServiceStub.java
index 3ab82e13fda5..6171584d457f 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/OsConfigZonalServiceStub.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/OsConfigZonalServiceStub.java
@@ -57,6 +57,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class OsConfigZonalServiceStub implements BackgroundResource {
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/OsConfigZonalServiceStubSettings.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/OsConfigZonalServiceStubSettings.java
index 2dac12a59d79..b6aaad4a8776 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/OsConfigZonalServiceStubSettings.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1alpha/stub/OsConfigZonalServiceStubSettings.java
@@ -90,6 +90,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -168,6 +169,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/OsConfigServiceClient.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/OsConfigServiceClient.java
index 0b55eeb86586..00300773a3c1 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/OsConfigServiceClient.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/OsConfigServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -434,6 +435,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class OsConfigServiceClient implements BackgroundResource {
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/OsConfigServiceSettings.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/OsConfigServiceSettings.java
index 1e3d428a830a..e7509711aab7 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/OsConfigServiceSettings.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/OsConfigServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class OsConfigServiceSettings extends ClientSettings<OsConfigServiceSettings> {
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/GrpcOsConfigServiceCallableFactory.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/GrpcOsConfigServiceCallableFactory.java
index 8892111b6583..4123f0761d0b 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/GrpcOsConfigServiceCallableFactory.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/GrpcOsConfigServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcOsConfigServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/GrpcOsConfigServiceStub.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/GrpcOsConfigServiceStub.java
index e922ec0de01e..d428b5d87eca 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/GrpcOsConfigServiceStub.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/GrpcOsConfigServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcOsConfigServiceStub extends OsConfigServiceStub {
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/HttpJsonOsConfigServiceCallableFactory.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/HttpJsonOsConfigServiceCallableFactory.java
index 91a5a429bc70..59c4d618111c 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/HttpJsonOsConfigServiceCallableFactory.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/HttpJsonOsConfigServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonOsConfigServiceCallableFactory
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/HttpJsonOsConfigServiceStub.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/HttpJsonOsConfigServiceStub.java
index 4fab6e607dcd..791f1e57c76e 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/HttpJsonOsConfigServiceStub.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/HttpJsonOsConfigServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonOsConfigServiceStub extends OsConfigServiceStub {
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/OsConfigServiceStub.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/OsConfigServiceStub.java
index 933671f43714..1a457b40a72f 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/OsConfigServiceStub.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/OsConfigServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.osconfig.v1beta.PatchJobs;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class OsConfigServiceStub implements BackgroundResource {
diff --git a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/OsConfigServiceStubSettings.java b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/OsConfigServiceStubSettings.java
index a392bf1aa9c7..9fb24908f8c0 100644
--- a/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/OsConfigServiceStubSettings.java
+++ b/java-os-config/google-cloud-os-config/src/main/java/com/google/cloud/osconfig/v1beta/stub/OsConfigServiceStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/InstanceName.java b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/InstanceName.java
index 0beb6f87fc0f..5d42d998ac72 100644
--- a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/InstanceName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/InstanceName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_ZONE_INSTANCE =
diff --git a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/InstanceOSPolicyAssignmentName.java b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/InstanceOSPolicyAssignmentName.java
index ae891b326c20..16a5076be06a 100644
--- a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/InstanceOSPolicyAssignmentName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/InstanceOSPolicyAssignmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceOSPolicyAssignmentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_ASSIGNMENT =
diff --git a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/InventoryName.java b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/InventoryName.java
index 503639d4d9a4..6c43166132c2 100644
--- a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/InventoryName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/InventoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InventoryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/LocationName.java b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/LocationName.java
index 2251ebfc39b2..9dcf2bedba6e 100644
--- a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/LocationName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/OSPolicyAssignmentName.java b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/OSPolicyAssignmentName.java
index e5699c6d6151..95d9e3568ea7 100644
--- a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/OSPolicyAssignmentName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/OSPolicyAssignmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OSPolicyAssignmentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_OS_POLICY_ASSIGNMENT =
diff --git a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/OSPolicyAssignmentReportName.java b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/OSPolicyAssignmentReportName.java
index 4262516eea4d..7266d14a4370 100644
--- a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/OSPolicyAssignmentReportName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/OSPolicyAssignmentReportName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OSPolicyAssignmentReportName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_ASSIGNMENT =
diff --git a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/PatchDeploymentName.java b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/PatchDeploymentName.java
index 1aa092518fdf..8ac8f1057d0f 100644
--- a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/PatchDeploymentName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/PatchDeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PatchDeploymentName implements ResourceName {
   private static final PathTemplate PROJECT_PATCH_DEPLOYMENT =
diff --git a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/PatchJobName.java b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/PatchJobName.java
index 07a75f9e5342..70bcb7c96f77 100644
--- a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/PatchJobName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/PatchJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PatchJobName implements ResourceName {
   private static final PathTemplate PROJECT_PATCH_JOB =
diff --git a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/ProjectName.java b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/ProjectName.java
index 7d1ed4d95b5d..3ec584308b9d 100644
--- a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/ProjectName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/VulnerabilityReportName.java b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/VulnerabilityReportName.java
index 3471c534336d..196bced62964 100644
--- a/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/VulnerabilityReportName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/VulnerabilityReportName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VulnerabilityReportName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/InstanceName.java b/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/InstanceName.java
index 6ea8764bdbca..bb3dd82365ba 100644
--- a/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/InstanceName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/InstanceOSPoliciesComplianceName.java b/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/InstanceOSPoliciesComplianceName.java
index 27d4893ad679..e75016bff660 100644
--- a/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/InstanceOSPoliciesComplianceName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/InstanceOSPoliciesComplianceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceOSPoliciesComplianceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/InstanceOSPolicyAssignmentName.java b/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/InstanceOSPolicyAssignmentName.java
index 11578090902f..32768d941f12 100644
--- a/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/InstanceOSPolicyAssignmentName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/InstanceOSPolicyAssignmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceOSPolicyAssignmentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_ASSIGNMENT =
diff --git a/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/InventoryName.java b/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/InventoryName.java
index a855a2b5e2e0..3bf90f3303b0 100644
--- a/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/InventoryName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/InventoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InventoryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/LocationName.java b/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/LocationName.java
index 09877700071d..dc2239a38235 100644
--- a/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/LocationName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/OSPolicyAssignmentName.java b/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/OSPolicyAssignmentName.java
index 88f3f6602903..612b5cbc17ed 100644
--- a/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/OSPolicyAssignmentName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/OSPolicyAssignmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OSPolicyAssignmentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_OS_POLICY_ASSIGNMENT =
diff --git a/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/OSPolicyAssignmentReportName.java b/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/OSPolicyAssignmentReportName.java
index 5f3a124b5a22..448f27557583 100644
--- a/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/OSPolicyAssignmentReportName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/OSPolicyAssignmentReportName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OSPolicyAssignmentReportName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE_ASSIGNMENT =
diff --git a/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/VulnerabilityReportName.java b/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/VulnerabilityReportName.java
index 3bc75916dcdd..4ab2bd3d32ff 100644
--- a/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/VulnerabilityReportName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1alpha/src/main/java/com/google/cloud/osconfig/v1alpha/VulnerabilityReportName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VulnerabilityReportName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-os-config/proto-google-cloud-os-config-v1beta/src/main/java/com/google/cloud/osconfig/v1beta/GuestPolicyName.java b/java-os-config/proto-google-cloud-os-config-v1beta/src/main/java/com/google/cloud/osconfig/v1beta/GuestPolicyName.java
index 3c78bda2852e..ad153dcd2eb2 100644
--- a/java-os-config/proto-google-cloud-os-config-v1beta/src/main/java/com/google/cloud/osconfig/v1beta/GuestPolicyName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1beta/src/main/java/com/google/cloud/osconfig/v1beta/GuestPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GuestPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_GUEST_POLICY =
diff --git a/java-os-config/proto-google-cloud-os-config-v1beta/src/main/java/com/google/cloud/osconfig/v1beta/PatchDeploymentName.java b/java-os-config/proto-google-cloud-os-config-v1beta/src/main/java/com/google/cloud/osconfig/v1beta/PatchDeploymentName.java
index 944a6e09fb0e..e087d4383616 100644
--- a/java-os-config/proto-google-cloud-os-config-v1beta/src/main/java/com/google/cloud/osconfig/v1beta/PatchDeploymentName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1beta/src/main/java/com/google/cloud/osconfig/v1beta/PatchDeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PatchDeploymentName implements ResourceName {
   private static final PathTemplate PROJECT_PATCH_DEPLOYMENT =
diff --git a/java-os-config/proto-google-cloud-os-config-v1beta/src/main/java/com/google/cloud/osconfig/v1beta/ProjectName.java b/java-os-config/proto-google-cloud-os-config-v1beta/src/main/java/com/google/cloud/osconfig/v1beta/ProjectName.java
index d3cfa7511e87..369bbfe3cf23 100644
--- a/java-os-config/proto-google-cloud-os-config-v1beta/src/main/java/com/google/cloud/osconfig/v1beta/ProjectName.java
+++ b/java-os-config/proto-google-cloud-os-config-v1beta/src/main/java/com/google/cloud/osconfig/v1beta/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/OsLoginServiceClient.java b/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/OsLoginServiceClient.java
index 12976ddbcb0c..46ff3e4d1ae6 100644
--- a/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/OsLoginServiceClient.java
+++ b/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/OsLoginServiceClient.java
@@ -26,6 +26,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -253,6 +254,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OsLoginServiceClient implements BackgroundResource {
   private final OsLoginServiceSettings settings;
diff --git a/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/OsLoginServiceSettings.java b/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/OsLoginServiceSettings.java
index c415bdc00139..d30416176a43 100644
--- a/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/OsLoginServiceSettings.java
+++ b/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/OsLoginServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OsLoginServiceSettings extends ClientSettings<OsLoginServiceSettings> {
 
diff --git a/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/GrpcOsLoginServiceCallableFactory.java b/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/GrpcOsLoginServiceCallableFactory.java
index a7d9b44c2184..8c74ada32259 100644
--- a/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/GrpcOsLoginServiceCallableFactory.java
+++ b/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/GrpcOsLoginServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOsLoginServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/GrpcOsLoginServiceStub.java b/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/GrpcOsLoginServiceStub.java
index a7684ef033cb..8bc5291eddd8 100644
--- a/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/GrpcOsLoginServiceStub.java
+++ b/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/GrpcOsLoginServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOsLoginServiceStub extends OsLoginServiceStub {
   private static final MethodDescriptor<CreateSshPublicKeyRequest, OsLoginProto.SshPublicKey>
diff --git a/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/HttpJsonOsLoginServiceCallableFactory.java b/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/HttpJsonOsLoginServiceCallableFactory.java
index 20540c596494..1b88474beea8 100644
--- a/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/HttpJsonOsLoginServiceCallableFactory.java
+++ b/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/HttpJsonOsLoginServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOsLoginServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/HttpJsonOsLoginServiceStub.java b/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/HttpJsonOsLoginServiceStub.java
index 0b3eb06d65a5..2c773c73829a 100644
--- a/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/HttpJsonOsLoginServiceStub.java
+++ b/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/HttpJsonOsLoginServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOsLoginServiceStub extends OsLoginServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/OsLoginServiceStub.java b/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/OsLoginServiceStub.java
index 17bdb5ae45c8..bf18a65ad620 100644
--- a/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/OsLoginServiceStub.java
+++ b/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/OsLoginServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.oslogin.v1.UpdateSshPublicKeyRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class OsLoginServiceStub implements BackgroundResource {
 
diff --git a/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/OsLoginServiceStubSettings.java b/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/OsLoginServiceStubSettings.java
index ba28da3b4746..5e8e8387c693 100644
--- a/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/OsLoginServiceStubSettings.java
+++ b/java-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/stub/OsLoginServiceStubSettings.java
@@ -55,6 +55,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -106,6 +107,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class OsLoginServiceStubSettings extends StubSettings<OsLoginServiceStubSettings> {
diff --git a/java-os-login/proto-google-cloud-os-login-v1/src/main/java/com/google/cloud/oslogin/common/PosixAccountName.java b/java-os-login/proto-google-cloud-os-login-v1/src/main/java/com/google/cloud/oslogin/common/PosixAccountName.java
index ba8422596e79..a73fa56037bd 100644
--- a/java-os-login/proto-google-cloud-os-login-v1/src/main/java/com/google/cloud/oslogin/common/PosixAccountName.java
+++ b/java-os-login/proto-google-cloud-os-login-v1/src/main/java/com/google/cloud/oslogin/common/PosixAccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PosixAccountName implements ResourceName {
   private static final PathTemplate USER_PROJECT =
diff --git a/java-os-login/proto-google-cloud-os-login-v1/src/main/java/com/google/cloud/oslogin/common/SshPublicKeyName.java b/java-os-login/proto-google-cloud-os-login-v1/src/main/java/com/google/cloud/oslogin/common/SshPublicKeyName.java
index 89732ee79758..ba02f94e3f6f 100644
--- a/java-os-login/proto-google-cloud-os-login-v1/src/main/java/com/google/cloud/oslogin/common/SshPublicKeyName.java
+++ b/java-os-login/proto-google-cloud-os-login-v1/src/main/java/com/google/cloud/oslogin/common/SshPublicKeyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SshPublicKeyName implements ResourceName {
   private static final PathTemplate USER_FINGERPRINT =
diff --git a/java-os-login/proto-google-cloud-os-login-v1/src/main/java/com/google/cloud/oslogin/common/UserName.java b/java-os-login/proto-google-cloud-os-login-v1/src/main/java/com/google/cloud/oslogin/common/UserName.java
index 6cd3ec8915d6..7e2b65c0e73e 100644
--- a/java-os-login/proto-google-cloud-os-login-v1/src/main/java/com/google/cloud/oslogin/common/UserName.java
+++ b/java-os-login/proto-google-cloud-os-login-v1/src/main/java/com/google/cloud/oslogin/common/UserName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserName implements ResourceName {
   private static final PathTemplate USER = PathTemplate.createWithoutUrlEncoding("users/{user}");
diff --git a/java-os-login/proto-google-cloud-os-login-v1/src/main/java/com/google/cloud/oslogin/v1/UserName.java b/java-os-login/proto-google-cloud-os-login-v1/src/main/java/com/google/cloud/oslogin/v1/UserName.java
index 2907dfe07100..921f8fd16860 100644
--- a/java-os-login/proto-google-cloud-os-login-v1/src/main/java/com/google/cloud/oslogin/v1/UserName.java
+++ b/java-os-login/proto-google-cloud-os-login-v1/src/main/java/com/google/cloud/oslogin/v1/UserName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserName implements ResourceName {
   private static final PathTemplate USER = PathTemplate.createWithoutUrlEncoding("users/{user}");
diff --git a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/ParallelstoreClient.java b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/ParallelstoreClient.java
index 63f7a21291e5..e6e0cb06524f 100644
--- a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/ParallelstoreClient.java
+++ b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/ParallelstoreClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -304,6 +305,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ParallelstoreClient implements BackgroundResource {
   private final ParallelstoreSettings settings;
diff --git a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/ParallelstoreSettings.java b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/ParallelstoreSettings.java
index 5f84a929fe1d..56409e9cf997 100644
--- a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/ParallelstoreSettings.java
+++ b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/ParallelstoreSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ParallelstoreSettings extends ClientSettings<ParallelstoreSettings> {
 
diff --git a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/GrpcParallelstoreCallableFactory.java b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/GrpcParallelstoreCallableFactory.java
index 2717665ee28a..92769b6d39e7 100644
--- a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/GrpcParallelstoreCallableFactory.java
+++ b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/GrpcParallelstoreCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcParallelstoreCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/GrpcParallelstoreStub.java b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/GrpcParallelstoreStub.java
index 2e27c95f2e02..d796eb5602fe 100644
--- a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/GrpcParallelstoreStub.java
+++ b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/GrpcParallelstoreStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcParallelstoreStub extends ParallelstoreStub {
   private static final MethodDescriptor<ListInstancesRequest, ListInstancesResponse>
diff --git a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/HttpJsonParallelstoreCallableFactory.java b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/HttpJsonParallelstoreCallableFactory.java
index e5cd1ad0fdfa..d9c5ce26327d 100644
--- a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/HttpJsonParallelstoreCallableFactory.java
+++ b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/HttpJsonParallelstoreCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonParallelstoreCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/HttpJsonParallelstoreStub.java b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/HttpJsonParallelstoreStub.java
index b858c394e99e..7d76b56ebd03 100644
--- a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/HttpJsonParallelstoreStub.java
+++ b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/HttpJsonParallelstoreStub.java
@@ -64,6 +64,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonParallelstoreStub extends ParallelstoreStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/ParallelstoreStub.java b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/ParallelstoreStub.java
index cdbdf5c74770..58212b17c29f 100644
--- a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/ParallelstoreStub.java
+++ b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/ParallelstoreStub.java
@@ -44,6 +44,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ParallelstoreStub implements BackgroundResource {
 
diff --git a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/ParallelstoreStubSettings.java b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/ParallelstoreStubSettings.java
index 12340bddc0c3..119fc104f57e 100644
--- a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/ParallelstoreStubSettings.java
+++ b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1/stub/ParallelstoreStubSettings.java
@@ -78,6 +78,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ParallelstoreStubSettings extends StubSettings<ParallelstoreStubSettings> {
diff --git a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/ParallelstoreClient.java b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/ParallelstoreClient.java
index 1d5fd7986111..54d5be220cb1 100644
--- a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/ParallelstoreClient.java
+++ b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/ParallelstoreClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -304,6 +305,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ParallelstoreClient implements BackgroundResource {
diff --git a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/ParallelstoreSettings.java b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/ParallelstoreSettings.java
index 33e0855c4c3b..53fb10e42509 100644
--- a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/ParallelstoreSettings.java
+++ b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/ParallelstoreSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ParallelstoreSettings extends ClientSettings<ParallelstoreSettings> {
diff --git a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/GrpcParallelstoreCallableFactory.java b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/GrpcParallelstoreCallableFactory.java
index b33d8642efd5..3af950e7a7bb 100644
--- a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/GrpcParallelstoreCallableFactory.java
+++ b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/GrpcParallelstoreCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcParallelstoreCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/GrpcParallelstoreStub.java b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/GrpcParallelstoreStub.java
index e110a8aff3cd..66027cb283cd 100644
--- a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/GrpcParallelstoreStub.java
+++ b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/GrpcParallelstoreStub.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcParallelstoreStub extends ParallelstoreStub {
diff --git a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/HttpJsonParallelstoreCallableFactory.java b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/HttpJsonParallelstoreCallableFactory.java
index 3eca69566264..a18c1d2eca19 100644
--- a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/HttpJsonParallelstoreCallableFactory.java
+++ b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/HttpJsonParallelstoreCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonParallelstoreCallableFactory
diff --git a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/HttpJsonParallelstoreStub.java b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/HttpJsonParallelstoreStub.java
index 3f3d1c6bfac5..f22a25bb9bfd 100644
--- a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/HttpJsonParallelstoreStub.java
+++ b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/HttpJsonParallelstoreStub.java
@@ -65,6 +65,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonParallelstoreStub extends ParallelstoreStub {
diff --git a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/ParallelstoreStub.java b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/ParallelstoreStub.java
index 34a802ea04d2..d64bb0a1116b 100644
--- a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/ParallelstoreStub.java
+++ b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/ParallelstoreStub.java
@@ -45,6 +45,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ParallelstoreStub implements BackgroundResource {
diff --git a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/ParallelstoreStubSettings.java b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/ParallelstoreStubSettings.java
index c18031487713..6f4442012435 100644
--- a/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/ParallelstoreStubSettings.java
+++ b/java-parallelstore/google-cloud-parallelstore/src/main/java/com/google/cloud/parallelstore/v1beta/stub/ParallelstoreStubSettings.java
@@ -78,6 +78,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-parallelstore/proto-google-cloud-parallelstore-v1/src/main/java/com/google/cloud/parallelstore/v1/InstanceName.java b/java-parallelstore/proto-google-cloud-parallelstore-v1/src/main/java/com/google/cloud/parallelstore/v1/InstanceName.java
index 3a1d5c2efaf8..dfa3ed4b86e6 100644
--- a/java-parallelstore/proto-google-cloud-parallelstore-v1/src/main/java/com/google/cloud/parallelstore/v1/InstanceName.java
+++ b/java-parallelstore/proto-google-cloud-parallelstore-v1/src/main/java/com/google/cloud/parallelstore/v1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-parallelstore/proto-google-cloud-parallelstore-v1/src/main/java/com/google/cloud/parallelstore/v1/LocationName.java b/java-parallelstore/proto-google-cloud-parallelstore-v1/src/main/java/com/google/cloud/parallelstore/v1/LocationName.java
index 47ba3f74a77d..9b522450c1fc 100644
--- a/java-parallelstore/proto-google-cloud-parallelstore-v1/src/main/java/com/google/cloud/parallelstore/v1/LocationName.java
+++ b/java-parallelstore/proto-google-cloud-parallelstore-v1/src/main/java/com/google/cloud/parallelstore/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-parallelstore/proto-google-cloud-parallelstore-v1/src/main/java/com/google/cloud/parallelstore/v1/ServiceAccountName.java b/java-parallelstore/proto-google-cloud-parallelstore-v1/src/main/java/com/google/cloud/parallelstore/v1/ServiceAccountName.java
index 0ef20fdd247c..2430c1c79ed1 100644
--- a/java-parallelstore/proto-google-cloud-parallelstore-v1/src/main/java/com/google/cloud/parallelstore/v1/ServiceAccountName.java
+++ b/java-parallelstore/proto-google-cloud-parallelstore-v1/src/main/java/com/google/cloud/parallelstore/v1/ServiceAccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceAccountName implements ResourceName {
   private static final PathTemplate PROJECT_SERVICE_ACCOUNT =
diff --git a/java-parallelstore/proto-google-cloud-parallelstore-v1beta/src/main/java/com/google/cloud/parallelstore/v1beta/InstanceName.java b/java-parallelstore/proto-google-cloud-parallelstore-v1beta/src/main/java/com/google/cloud/parallelstore/v1beta/InstanceName.java
index aaefd537000e..92a0e50c3be5 100644
--- a/java-parallelstore/proto-google-cloud-parallelstore-v1beta/src/main/java/com/google/cloud/parallelstore/v1beta/InstanceName.java
+++ b/java-parallelstore/proto-google-cloud-parallelstore-v1beta/src/main/java/com/google/cloud/parallelstore/v1beta/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-parallelstore/proto-google-cloud-parallelstore-v1beta/src/main/java/com/google/cloud/parallelstore/v1beta/LocationName.java b/java-parallelstore/proto-google-cloud-parallelstore-v1beta/src/main/java/com/google/cloud/parallelstore/v1beta/LocationName.java
index c91659bbeff4..538bcba82a86 100644
--- a/java-parallelstore/proto-google-cloud-parallelstore-v1beta/src/main/java/com/google/cloud/parallelstore/v1beta/LocationName.java
+++ b/java-parallelstore/proto-google-cloud-parallelstore-v1beta/src/main/java/com/google/cloud/parallelstore/v1beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-parallelstore/proto-google-cloud-parallelstore-v1beta/src/main/java/com/google/cloud/parallelstore/v1beta/ServiceAccountName.java b/java-parallelstore/proto-google-cloud-parallelstore-v1beta/src/main/java/com/google/cloud/parallelstore/v1beta/ServiceAccountName.java
index 81f5e40e8cd8..315feb78e353 100644
--- a/java-parallelstore/proto-google-cloud-parallelstore-v1beta/src/main/java/com/google/cloud/parallelstore/v1beta/ServiceAccountName.java
+++ b/java-parallelstore/proto-google-cloud-parallelstore-v1beta/src/main/java/com/google/cloud/parallelstore/v1beta/ServiceAccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceAccountName implements ResourceName {
   private static final PathTemplate PROJECT_SERVICE_ACCOUNT =
diff --git a/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/ParameterManagerClient.java b/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/ParameterManagerClient.java
index a318fc61c8c8..432680c8d747 100644
--- a/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/ParameterManagerClient.java
+++ b/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/ParameterManagerClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -364,6 +365,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ParameterManagerClient implements BackgroundResource {
   private final ParameterManagerSettings settings;
diff --git a/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/ParameterManagerSettings.java b/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/ParameterManagerSettings.java
index 0906dd36e217..5b8ce5a9eb98 100644
--- a/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/ParameterManagerSettings.java
+++ b/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/ParameterManagerSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -93,6 +94,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ParameterManagerSettings extends ClientSettings<ParameterManagerSettings> {
 
diff --git a/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/GrpcParameterManagerCallableFactory.java b/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/GrpcParameterManagerCallableFactory.java
index 1a5d876e41c9..dc1d6d99addd 100644
--- a/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/GrpcParameterManagerCallableFactory.java
+++ b/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/GrpcParameterManagerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcParameterManagerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/GrpcParameterManagerStub.java b/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/GrpcParameterManagerStub.java
index 0bc4f6137c59..9b6c1e6cca78 100644
--- a/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/GrpcParameterManagerStub.java
+++ b/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/GrpcParameterManagerStub.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcParameterManagerStub extends ParameterManagerStub {
   private static final MethodDescriptor<ListParametersRequest, ListParametersResponse>
diff --git a/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/HttpJsonParameterManagerCallableFactory.java b/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/HttpJsonParameterManagerCallableFactory.java
index b2f4d230d4ad..43c4fa71a67d 100644
--- a/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/HttpJsonParameterManagerCallableFactory.java
+++ b/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/HttpJsonParameterManagerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonParameterManagerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/HttpJsonParameterManagerStub.java b/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/HttpJsonParameterManagerStub.java
index 9ce658db70c1..786581c43212 100644
--- a/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/HttpJsonParameterManagerStub.java
+++ b/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/HttpJsonParameterManagerStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonParameterManagerStub extends ParameterManagerStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/ParameterManagerStub.java b/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/ParameterManagerStub.java
index df4b3c971bce..f16cd51e9276 100644
--- a/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/ParameterManagerStub.java
+++ b/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/ParameterManagerStub.java
@@ -44,6 +44,7 @@
 import com.google.cloud.parametermanager.v1.UpdateParameterVersionRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ParameterManagerStub implements BackgroundResource {
 
diff --git a/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/ParameterManagerStubSettings.java b/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/ParameterManagerStubSettings.java
index 7ccb960ea53e..261db2eb6117 100644
--- a/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/ParameterManagerStubSettings.java
+++ b/java-parametermanager/google-cloud-parametermanager/src/main/java/com/google/cloud/parametermanager/v1/stub/ParameterManagerStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -128,6 +129,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ParameterManagerStubSettings extends StubSettings<ParameterManagerStubSettings> {
diff --git a/java-parametermanager/proto-google-cloud-parametermanager-v1/src/main/java/com/google/cloud/parametermanager/v1/LocationName.java b/java-parametermanager/proto-google-cloud-parametermanager-v1/src/main/java/com/google/cloud/parametermanager/v1/LocationName.java
index aa241c5cd479..9c0790ea8499 100644
--- a/java-parametermanager/proto-google-cloud-parametermanager-v1/src/main/java/com/google/cloud/parametermanager/v1/LocationName.java
+++ b/java-parametermanager/proto-google-cloud-parametermanager-v1/src/main/java/com/google/cloud/parametermanager/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-parametermanager/proto-google-cloud-parametermanager-v1/src/main/java/com/google/cloud/parametermanager/v1/ParameterName.java b/java-parametermanager/proto-google-cloud-parametermanager-v1/src/main/java/com/google/cloud/parametermanager/v1/ParameterName.java
index 4cc3f43b8f0e..85c51ae7c810 100644
--- a/java-parametermanager/proto-google-cloud-parametermanager-v1/src/main/java/com/google/cloud/parametermanager/v1/ParameterName.java
+++ b/java-parametermanager/proto-google-cloud-parametermanager-v1/src/main/java/com/google/cloud/parametermanager/v1/ParameterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ParameterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PARAMETER =
diff --git a/java-parametermanager/proto-google-cloud-parametermanager-v1/src/main/java/com/google/cloud/parametermanager/v1/ParameterVersionName.java b/java-parametermanager/proto-google-cloud-parametermanager-v1/src/main/java/com/google/cloud/parametermanager/v1/ParameterVersionName.java
index 66bad16a5739..6e4855f08250 100644
--- a/java-parametermanager/proto-google-cloud-parametermanager-v1/src/main/java/com/google/cloud/parametermanager/v1/ParameterVersionName.java
+++ b/java-parametermanager/proto-google-cloud-parametermanager-v1/src/main/java/com/google/cloud/parametermanager/v1/ParameterVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ParameterVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PARAMETER_PARAMETER_VERSION =
diff --git a/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/PhishingProtectionServiceV1Beta1Client.java b/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/PhishingProtectionServiceV1Beta1Client.java
index f650ea718d6c..f2db9fd777a4 100644
--- a/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/PhishingProtectionServiceV1Beta1Client.java
+++ b/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/PhishingProtectionServiceV1Beta1Client.java
@@ -27,6 +27,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -138,6 +139,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PhishingProtectionServiceV1Beta1Client implements BackgroundResource {
diff --git a/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/PhishingProtectionServiceV1Beta1Settings.java b/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/PhishingProtectionServiceV1Beta1Settings.java
index f68808289012..1ca2b56be4be 100644
--- a/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/PhishingProtectionServiceV1Beta1Settings.java
+++ b/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/PhishingProtectionServiceV1Beta1Settings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PhishingProtectionServiceV1Beta1Settings
diff --git a/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/GrpcPhishingProtectionServiceV1Beta1CallableFactory.java b/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/GrpcPhishingProtectionServiceV1Beta1CallableFactory.java
index e957e8fcbfdc..5746a7b22110 100644
--- a/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/GrpcPhishingProtectionServiceV1Beta1CallableFactory.java
+++ b/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/GrpcPhishingProtectionServiceV1Beta1CallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPhishingProtectionServiceV1Beta1CallableFactory
diff --git a/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/GrpcPhishingProtectionServiceV1Beta1Stub.java b/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/GrpcPhishingProtectionServiceV1Beta1Stub.java
index e4331de2fd80..a2ce47c0c69d 100644
--- a/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/GrpcPhishingProtectionServiceV1Beta1Stub.java
+++ b/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/GrpcPhishingProtectionServiceV1Beta1Stub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPhishingProtectionServiceV1Beta1Stub extends PhishingProtectionServiceV1Beta1Stub {
diff --git a/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/HttpJsonPhishingProtectionServiceV1Beta1CallableFactory.java b/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/HttpJsonPhishingProtectionServiceV1Beta1CallableFactory.java
index 05a7d37018cd..111631ce4765 100644
--- a/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/HttpJsonPhishingProtectionServiceV1Beta1CallableFactory.java
+++ b/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/HttpJsonPhishingProtectionServiceV1Beta1CallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPhishingProtectionServiceV1Beta1CallableFactory
diff --git a/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/HttpJsonPhishingProtectionServiceV1Beta1Stub.java b/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/HttpJsonPhishingProtectionServiceV1Beta1Stub.java
index 72a5d706cf33..153a52951ecb 100644
--- a/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/HttpJsonPhishingProtectionServiceV1Beta1Stub.java
+++ b/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/HttpJsonPhishingProtectionServiceV1Beta1Stub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPhishingProtectionServiceV1Beta1Stub
diff --git a/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/PhishingProtectionServiceV1Beta1Stub.java b/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/PhishingProtectionServiceV1Beta1Stub.java
index ab161b65739f..897768d8c6d3 100644
--- a/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/PhishingProtectionServiceV1Beta1Stub.java
+++ b/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/PhishingProtectionServiceV1Beta1Stub.java
@@ -22,6 +22,7 @@
 import com.google.phishingprotection.v1beta1.ReportPhishingRequest;
 import com.google.phishingprotection.v1beta1.ReportPhishingResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PhishingProtectionServiceV1Beta1Stub implements BackgroundResource {
diff --git a/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/PhishingProtectionServiceV1Beta1StubSettings.java b/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/PhishingProtectionServiceV1Beta1StubSettings.java
index 606683dc953e..fd13cfd6b43f 100644
--- a/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/PhishingProtectionServiceV1Beta1StubSettings.java
+++ b/java-phishingprotection/google-cloud-phishingprotection/src/main/java/com/google/cloud/phishingprotection/v1beta1/stub/PhishingProtectionServiceV1Beta1StubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-phishingprotection/proto-google-cloud-phishingprotection-v1beta1/src/main/java/com/google/phishingprotection/v1beta1/ProjectName.java b/java-phishingprotection/proto-google-cloud-phishingprotection-v1beta1/src/main/java/com/google/phishingprotection/v1beta1/ProjectName.java
index 3bb796e55aa0..c7ed26e506d6 100644
--- a/java-phishingprotection/proto-google-cloud-phishingprotection-v1beta1/src/main/java/com/google/phishingprotection/v1beta1/ProjectName.java
+++ b/java-phishingprotection/proto-google-cloud-phishingprotection-v1beta1/src/main/java/com/google/phishingprotection/v1beta1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/PolicyTroubleshooterClient.java b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/PolicyTroubleshooterClient.java
index 27c5893fb027..cdfa9a0ebe08 100644
--- a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/PolicyTroubleshooterClient.java
+++ b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/PolicyTroubleshooterClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -133,6 +134,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyTroubleshooterClient implements BackgroundResource {
   private final PolicyTroubleshooterSettings settings;
diff --git a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/PolicyTroubleshooterSettings.java b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/PolicyTroubleshooterSettings.java
index 336cb8212382..466c1f9c14ee 100644
--- a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/PolicyTroubleshooterSettings.java
+++ b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/PolicyTroubleshooterSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PolicyTroubleshooterSettings extends ClientSettings<PolicyTroubleshooterSettings> {
 
diff --git a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/GrpcPolicyTroubleshooterCallableFactory.java b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/GrpcPolicyTroubleshooterCallableFactory.java
index cdc5e3514109..5c652d14aa59 100644
--- a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/GrpcPolicyTroubleshooterCallableFactory.java
+++ b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/GrpcPolicyTroubleshooterCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPolicyTroubleshooterCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/GrpcPolicyTroubleshooterStub.java b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/GrpcPolicyTroubleshooterStub.java
index fabfc91e2bd5..3d5c09d09f74 100644
--- a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/GrpcPolicyTroubleshooterStub.java
+++ b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/GrpcPolicyTroubleshooterStub.java
@@ -30,6 +30,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPolicyTroubleshooterStub extends PolicyTroubleshooterStub {
   private static final MethodDescriptor<TroubleshootIamPolicyRequest, TroubleshootIamPolicyResponse>
diff --git a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/HttpJsonPolicyTroubleshooterCallableFactory.java b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/HttpJsonPolicyTroubleshooterCallableFactory.java
index 707516ad8eb5..358af0cb1fd3 100644
--- a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/HttpJsonPolicyTroubleshooterCallableFactory.java
+++ b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/HttpJsonPolicyTroubleshooterCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPolicyTroubleshooterCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/HttpJsonPolicyTroubleshooterStub.java b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/HttpJsonPolicyTroubleshooterStub.java
index 773ce8de208d..ea874ef9c7b8 100644
--- a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/HttpJsonPolicyTroubleshooterStub.java
+++ b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/HttpJsonPolicyTroubleshooterStub.java
@@ -37,6 +37,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPolicyTroubleshooterStub extends PolicyTroubleshooterStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/PolicyTroubleshooterStub.java b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/PolicyTroubleshooterStub.java
index 5419d6295e4f..2d8bedfb306c 100644
--- a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/PolicyTroubleshooterStub.java
+++ b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/PolicyTroubleshooterStub.java
@@ -21,6 +21,7 @@
 import com.google.cloud.policytroubleshooter.iam.v3.TroubleshootIamPolicyRequest;
 import com.google.cloud.policytroubleshooter.iam.v3.TroubleshootIamPolicyResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PolicyTroubleshooterStub implements BackgroundResource {
 
diff --git a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/PolicyTroubleshooterStubSettings.java b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/PolicyTroubleshooterStubSettings.java
index add9af4254e4..59d4bec53d8a 100644
--- a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/PolicyTroubleshooterStubSettings.java
+++ b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/iam/v3/stub/PolicyTroubleshooterStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PolicyTroubleshooterStubSettings
diff --git a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/IamCheckerClient.java b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/IamCheckerClient.java
index 566c71cd0c25..460bcf6cc51a 100644
--- a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/IamCheckerClient.java
+++ b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/IamCheckerClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IamCheckerClient implements BackgroundResource {
   private final IamCheckerSettings settings;
diff --git a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/IamCheckerSettings.java b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/IamCheckerSettings.java
index 95a68183c0f2..f34058ba13d9 100644
--- a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/IamCheckerSettings.java
+++ b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/IamCheckerSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IamCheckerSettings extends ClientSettings<IamCheckerSettings> {
 
diff --git a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/GrpcIamCheckerCallableFactory.java b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/GrpcIamCheckerCallableFactory.java
index 5f73f98bbea4..6120c530a002 100644
--- a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/GrpcIamCheckerCallableFactory.java
+++ b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/GrpcIamCheckerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIamCheckerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/GrpcIamCheckerStub.java b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/GrpcIamCheckerStub.java
index fe743c4af326..d862e2937524 100644
--- a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/GrpcIamCheckerStub.java
+++ b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/GrpcIamCheckerStub.java
@@ -30,6 +30,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcIamCheckerStub extends IamCheckerStub {
   private static final MethodDescriptor<TroubleshootIamPolicyRequest, TroubleshootIamPolicyResponse>
diff --git a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/HttpJsonIamCheckerCallableFactory.java b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/HttpJsonIamCheckerCallableFactory.java
index f30848ecc1c2..5aea27950df3 100644
--- a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/HttpJsonIamCheckerCallableFactory.java
+++ b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/HttpJsonIamCheckerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIamCheckerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/HttpJsonIamCheckerStub.java b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/HttpJsonIamCheckerStub.java
index 5fea92d7f50b..48137af9cd5f 100644
--- a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/HttpJsonIamCheckerStub.java
+++ b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/HttpJsonIamCheckerStub.java
@@ -37,6 +37,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonIamCheckerStub extends IamCheckerStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/IamCheckerStub.java b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/IamCheckerStub.java
index 1d24918f1404..334b6643fa6e 100644
--- a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/IamCheckerStub.java
+++ b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/IamCheckerStub.java
@@ -21,6 +21,7 @@
 import com.google.cloud.policytroubleshooter.v1.TroubleshootIamPolicyRequest;
 import com.google.cloud.policytroubleshooter.v1.TroubleshootIamPolicyResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class IamCheckerStub implements BackgroundResource {
 
diff --git a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/IamCheckerStubSettings.java b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/IamCheckerStubSettings.java
index 50795a94d84e..be0f19abdb2a 100644
--- a/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/IamCheckerStubSettings.java
+++ b/java-policy-troubleshooter/google-cloud-policy-troubleshooter/src/main/java/com/google/cloud/policytroubleshooter/v1/stub/IamCheckerStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class IamCheckerStubSettings extends StubSettings<IamCheckerStubSettings> {
diff --git a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/OrgPolicyViolationsPreviewServiceClient.java b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/OrgPolicyViolationsPreviewServiceClient.java
index d05da4253956..97b4344a5d51 100644
--- a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/OrgPolicyViolationsPreviewServiceClient.java
+++ b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/OrgPolicyViolationsPreviewServiceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -216,6 +217,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrgPolicyViolationsPreviewServiceClient implements BackgroundResource {
   private final OrgPolicyViolationsPreviewServiceSettings settings;
diff --git a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/OrgPolicyViolationsPreviewServiceSettings.java b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/OrgPolicyViolationsPreviewServiceSettings.java
index 1f4b7228f8b3..2ea48c9a17a5 100644
--- a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/OrgPolicyViolationsPreviewServiceSettings.java
+++ b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/OrgPolicyViolationsPreviewServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrgPolicyViolationsPreviewServiceSettings
     extends ClientSettings<OrgPolicyViolationsPreviewServiceSettings> {
diff --git a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/SimulatorClient.java b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/SimulatorClient.java
index 464248efd7d3..f8a5afa7aed5 100644
--- a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/SimulatorClient.java
+++ b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/SimulatorClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -189,6 +190,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SimulatorClient implements BackgroundResource {
   private final SimulatorSettings settings;
diff --git a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/SimulatorSettings.java b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/SimulatorSettings.java
index 55e5352210f9..885e64c9a202 100644
--- a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/SimulatorSettings.java
+++ b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/SimulatorSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SimulatorSettings extends ClientSettings<SimulatorSettings> {
 
diff --git a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/GrpcOrgPolicyViolationsPreviewServiceCallableFactory.java b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/GrpcOrgPolicyViolationsPreviewServiceCallableFactory.java
index c2435d15ecbf..b8d77d75c8e7 100644
--- a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/GrpcOrgPolicyViolationsPreviewServiceCallableFactory.java
+++ b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/GrpcOrgPolicyViolationsPreviewServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOrgPolicyViolationsPreviewServiceCallableFactory
     implements GrpcStubCallableFactory {
diff --git a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/GrpcOrgPolicyViolationsPreviewServiceStub.java b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/GrpcOrgPolicyViolationsPreviewServiceStub.java
index b277e06f2315..9a1c66a96b7e 100644
--- a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/GrpcOrgPolicyViolationsPreviewServiceStub.java
+++ b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/GrpcOrgPolicyViolationsPreviewServiceStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOrgPolicyViolationsPreviewServiceStub
     extends OrgPolicyViolationsPreviewServiceStub {
diff --git a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/GrpcSimulatorCallableFactory.java b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/GrpcSimulatorCallableFactory.java
index d221ab95ef9d..468e4cc6d77f 100644
--- a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/GrpcSimulatorCallableFactory.java
+++ b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/GrpcSimulatorCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSimulatorCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/GrpcSimulatorStub.java b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/GrpcSimulatorStub.java
index d3c1bd47d35c..a1e67d850881 100644
--- a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/GrpcSimulatorStub.java
+++ b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/GrpcSimulatorStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSimulatorStub extends SimulatorStub {
   private static final MethodDescriptor<GetReplayRequest, Replay> getReplayMethodDescriptor =
diff --git a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/HttpJsonOrgPolicyViolationsPreviewServiceCallableFactory.java b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/HttpJsonOrgPolicyViolationsPreviewServiceCallableFactory.java
index 64044a935c37..a8391a539380 100644
--- a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/HttpJsonOrgPolicyViolationsPreviewServiceCallableFactory.java
+++ b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/HttpJsonOrgPolicyViolationsPreviewServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOrgPolicyViolationsPreviewServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/HttpJsonOrgPolicyViolationsPreviewServiceStub.java b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/HttpJsonOrgPolicyViolationsPreviewServiceStub.java
index aae556ab810a..1151e12e41b2 100644
--- a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/HttpJsonOrgPolicyViolationsPreviewServiceStub.java
+++ b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/HttpJsonOrgPolicyViolationsPreviewServiceStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOrgPolicyViolationsPreviewServiceStub
     extends OrgPolicyViolationsPreviewServiceStub {
diff --git a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/HttpJsonSimulatorCallableFactory.java b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/HttpJsonSimulatorCallableFactory.java
index aca5cc1efdc8..ed329ffc76bc 100644
--- a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/HttpJsonSimulatorCallableFactory.java
+++ b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/HttpJsonSimulatorCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSimulatorCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/HttpJsonSimulatorStub.java b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/HttpJsonSimulatorStub.java
index 148c8c6d3d0b..7092f20da903 100644
--- a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/HttpJsonSimulatorStub.java
+++ b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/HttpJsonSimulatorStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSimulatorStub extends SimulatorStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/OrgPolicyViolationsPreviewServiceStub.java b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/OrgPolicyViolationsPreviewServiceStub.java
index dab173726627..1d781999f3c6 100644
--- a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/OrgPolicyViolationsPreviewServiceStub.java
+++ b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/OrgPolicyViolationsPreviewServiceStub.java
@@ -33,6 +33,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class OrgPolicyViolationsPreviewServiceStub implements BackgroundResource {
 
diff --git a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/OrgPolicyViolationsPreviewServiceStubSettings.java b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/OrgPolicyViolationsPreviewServiceStubSettings.java
index 33bf06977fe5..0638b43235c3 100644
--- a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/OrgPolicyViolationsPreviewServiceStubSettings.java
+++ b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/OrgPolicyViolationsPreviewServiceStubSettings.java
@@ -68,6 +68,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -149,6 +150,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class OrgPolicyViolationsPreviewServiceStubSettings
diff --git a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/SimulatorStub.java b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/SimulatorStub.java
index 235e7cba0448..46bd68834f7e 100644
--- a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/SimulatorStub.java
+++ b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/SimulatorStub.java
@@ -30,6 +30,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SimulatorStub implements BackgroundResource {
 
diff --git a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/SimulatorStubSettings.java b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/SimulatorStubSettings.java
index 157726a75492..9d2e709fe4bf 100644
--- a/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/SimulatorStubSettings.java
+++ b/java-policysimulator/google-cloud-policysimulator/src/main/java/com/google/cloud/policysimulator/v1/stub/SimulatorStubSettings.java
@@ -65,6 +65,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SimulatorStubSettings extends StubSettings<SimulatorStubSettings> {
diff --git a/java-policysimulator/proto-google-cloud-policysimulator-v1/src/main/java/com/google/cloud/policysimulator/v1/OrgPolicyViolationName.java b/java-policysimulator/proto-google-cloud-policysimulator-v1/src/main/java/com/google/cloud/policysimulator/v1/OrgPolicyViolationName.java
index 76156ac8d97e..c8db26e808d0 100644
--- a/java-policysimulator/proto-google-cloud-policysimulator-v1/src/main/java/com/google/cloud/policysimulator/v1/OrgPolicyViolationName.java
+++ b/java-policysimulator/proto-google-cloud-policysimulator-v1/src/main/java/com/google/cloud/policysimulator/v1/OrgPolicyViolationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrgPolicyViolationName implements ResourceName {
   private static final PathTemplate
diff --git a/java-policysimulator/proto-google-cloud-policysimulator-v1/src/main/java/com/google/cloud/policysimulator/v1/OrgPolicyViolationsPreviewName.java b/java-policysimulator/proto-google-cloud-policysimulator-v1/src/main/java/com/google/cloud/policysimulator/v1/OrgPolicyViolationsPreviewName.java
index bf12bc0c94d7..a9065b1790ae 100644
--- a/java-policysimulator/proto-google-cloud-policysimulator-v1/src/main/java/com/google/cloud/policysimulator/v1/OrgPolicyViolationsPreviewName.java
+++ b/java-policysimulator/proto-google-cloud-policysimulator-v1/src/main/java/com/google/cloud/policysimulator/v1/OrgPolicyViolationsPreviewName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrgPolicyViolationsPreviewName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_ORG_POLICY_VIOLATIONS_PREVIEW =
diff --git a/java-policysimulator/proto-google-cloud-policysimulator-v1/src/main/java/com/google/cloud/policysimulator/v1/OrganizationLocationName.java b/java-policysimulator/proto-google-cloud-policysimulator-v1/src/main/java/com/google/cloud/policysimulator/v1/OrganizationLocationName.java
index d04aabd6a2f1..ceb3961c0c64 100644
--- a/java-policysimulator/proto-google-cloud-policysimulator-v1/src/main/java/com/google/cloud/policysimulator/v1/OrganizationLocationName.java
+++ b/java-policysimulator/proto-google-cloud-policysimulator-v1/src/main/java/com/google/cloud/policysimulator/v1/OrganizationLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationLocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-policysimulator/proto-google-cloud-policysimulator-v1/src/main/java/com/google/cloud/policysimulator/v1/ReplayName.java b/java-policysimulator/proto-google-cloud-policysimulator-v1/src/main/java/com/google/cloud/policysimulator/v1/ReplayName.java
index 8e6432366dd6..b353984dee32 100644
--- a/java-policysimulator/proto-google-cloud-policysimulator-v1/src/main/java/com/google/cloud/policysimulator/v1/ReplayName.java
+++ b/java-policysimulator/proto-google-cloud-policysimulator-v1/src/main/java/com/google/cloud/policysimulator/v1/ReplayName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReplayName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPLAY =
diff --git a/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/PrivateCatalogClient.java b/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/PrivateCatalogClient.java
index d2da65ddc8d2..9cf6821654ea 100644
--- a/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/PrivateCatalogClient.java
+++ b/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/PrivateCatalogClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -185,6 +186,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PrivateCatalogClient implements BackgroundResource {
diff --git a/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/PrivateCatalogSettings.java b/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/PrivateCatalogSettings.java
index 615355570db1..65a6f636dda6 100644
--- a/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/PrivateCatalogSettings.java
+++ b/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/PrivateCatalogSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PrivateCatalogSettings extends ClientSettings<PrivateCatalogSettings> {
diff --git a/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/GrpcPrivateCatalogCallableFactory.java b/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/GrpcPrivateCatalogCallableFactory.java
index 2239150bb216..c3168b25c5c5 100644
--- a/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/GrpcPrivateCatalogCallableFactory.java
+++ b/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/GrpcPrivateCatalogCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPrivateCatalogCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/GrpcPrivateCatalogStub.java b/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/GrpcPrivateCatalogStub.java
index 9ad37705829c..ed22fc827ba1 100644
--- a/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/GrpcPrivateCatalogStub.java
+++ b/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/GrpcPrivateCatalogStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPrivateCatalogStub extends PrivateCatalogStub {
diff --git a/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/HttpJsonPrivateCatalogCallableFactory.java b/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/HttpJsonPrivateCatalogCallableFactory.java
index 6d110d2c6aaa..ae049fe571dc 100644
--- a/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/HttpJsonPrivateCatalogCallableFactory.java
+++ b/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/HttpJsonPrivateCatalogCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPrivateCatalogCallableFactory
diff --git a/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/HttpJsonPrivateCatalogStub.java b/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/HttpJsonPrivateCatalogStub.java
index 891752f1a2af..a2b4515b676b 100644
--- a/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/HttpJsonPrivateCatalogStub.java
+++ b/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/HttpJsonPrivateCatalogStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPrivateCatalogStub extends PrivateCatalogStub {
diff --git a/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/PrivateCatalogStub.java b/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/PrivateCatalogStub.java
index 9b5e6ce7a19b..71d767806ea2 100644
--- a/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/PrivateCatalogStub.java
+++ b/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/PrivateCatalogStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.privatecatalog.v1beta1.SearchVersionsRequest;
 import com.google.cloud.privatecatalog.v1beta1.SearchVersionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PrivateCatalogStub implements BackgroundResource {
diff --git a/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/PrivateCatalogStubSettings.java b/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/PrivateCatalogStubSettings.java
index e3189878e606..3cd0268847b9 100644
--- a/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/PrivateCatalogStubSettings.java
+++ b/java-private-catalog/google-cloud-private-catalog/src/main/java/com/google/cloud/privatecatalog/v1beta1/stub/PrivateCatalogStubSettings.java
@@ -63,6 +63,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/PrivilegedAccessManagerClient.java b/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/PrivilegedAccessManagerClient.java
index 858a3f30de3f..b1cf3da8f080 100644
--- a/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/PrivilegedAccessManagerClient.java
+++ b/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/PrivilegedAccessManagerClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -435,6 +436,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PrivilegedAccessManagerClient implements BackgroundResource {
   private final PrivilegedAccessManagerSettings settings;
diff --git a/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/PrivilegedAccessManagerSettings.java b/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/PrivilegedAccessManagerSettings.java
index 6ab67b3e2483..1a2aef9000c3 100644
--- a/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/PrivilegedAccessManagerSettings.java
+++ b/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/PrivilegedAccessManagerSettings.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PrivilegedAccessManagerSettings
     extends ClientSettings<PrivilegedAccessManagerSettings> {
diff --git a/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/GrpcPrivilegedAccessManagerCallableFactory.java b/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/GrpcPrivilegedAccessManagerCallableFactory.java
index 6dc045e90312..0e89ba198827 100644
--- a/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/GrpcPrivilegedAccessManagerCallableFactory.java
+++ b/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/GrpcPrivilegedAccessManagerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPrivilegedAccessManagerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/GrpcPrivilegedAccessManagerStub.java b/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/GrpcPrivilegedAccessManagerStub.java
index 7f78baec9703..10adfdfa32a7 100644
--- a/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/GrpcPrivilegedAccessManagerStub.java
+++ b/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/GrpcPrivilegedAccessManagerStub.java
@@ -63,6 +63,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPrivilegedAccessManagerStub extends PrivilegedAccessManagerStub {
   private static final MethodDescriptor<CheckOnboardingStatusRequest, CheckOnboardingStatusResponse>
diff --git a/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/HttpJsonPrivilegedAccessManagerCallableFactory.java b/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/HttpJsonPrivilegedAccessManagerCallableFactory.java
index d498bdff5458..96c476f53bf2 100644
--- a/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/HttpJsonPrivilegedAccessManagerCallableFactory.java
+++ b/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/HttpJsonPrivilegedAccessManagerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPrivilegedAccessManagerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/HttpJsonPrivilegedAccessManagerStub.java b/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/HttpJsonPrivilegedAccessManagerStub.java
index feb3f179fd12..af4a1808eb52 100644
--- a/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/HttpJsonPrivilegedAccessManagerStub.java
+++ b/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/HttpJsonPrivilegedAccessManagerStub.java
@@ -74,6 +74,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPrivilegedAccessManagerStub extends PrivilegedAccessManagerStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/PrivilegedAccessManagerStub.java b/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/PrivilegedAccessManagerStub.java
index 73c54792546d..5a535dcb9d66 100644
--- a/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/PrivilegedAccessManagerStub.java
+++ b/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/PrivilegedAccessManagerStub.java
@@ -54,6 +54,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PrivilegedAccessManagerStub implements BackgroundResource {
 
diff --git a/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/PrivilegedAccessManagerStubSettings.java b/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/PrivilegedAccessManagerStubSettings.java
index 5da3c52c2510..bcc3fd12ba8e 100644
--- a/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/PrivilegedAccessManagerStubSettings.java
+++ b/java-privilegedaccessmanager/google-cloud-privilegedaccessmanager/src/main/java/com/google/cloud/privilegedaccessmanager/v1/stub/PrivilegedAccessManagerStubSettings.java
@@ -88,6 +88,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PrivilegedAccessManagerStubSettings
diff --git a/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/EntitlementName.java b/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/EntitlementName.java
index 7dbd005fb2a5..e0074994114e 100644
--- a/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/EntitlementName.java
+++ b/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/EntitlementName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EntitlementName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENTITLEMENT =
diff --git a/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/FolderLocationName.java b/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/FolderLocationName.java
index 8282f79dae59..335b189c5660 100644
--- a/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/FolderLocationName.java
+++ b/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/FolderLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderLocationName implements ResourceName {
   private static final PathTemplate FOLDER_LOCATION =
diff --git a/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/GrantName.java b/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/GrantName.java
index fb2fd4c72ffb..401c55b715f5 100644
--- a/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/GrantName.java
+++ b/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/GrantName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrantName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ENTITLEMENT_GRANT =
diff --git a/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/LocationName.java b/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/LocationName.java
index ef3350977ec4..d9b1f61c5686 100644
--- a/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/LocationName.java
+++ b/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/OrganizationLocationName.java b/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/OrganizationLocationName.java
index 272837ecb1f5..fdcf84ec08e9 100644
--- a/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/OrganizationLocationName.java
+++ b/java-privilegedaccessmanager/proto-google-cloud-privilegedaccessmanager-v1/src/main/java/com/google/cloud/privilegedaccessmanager/v1/OrganizationLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationLocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/ExportServiceClient.java b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/ExportServiceClient.java
index 9c0a51de9df5..3e4d05e82366 100644
--- a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/ExportServiceClient.java
+++ b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/ExportServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -139,6 +140,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExportServiceClient implements BackgroundResource {
   private final ExportServiceSettings settings;
diff --git a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/ExportServiceSettings.java b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/ExportServiceSettings.java
index be7007f6a41e..6e716447c59f 100644
--- a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/ExportServiceSettings.java
+++ b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/ExportServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExportServiceSettings extends ClientSettings<ExportServiceSettings> {
 
diff --git a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/ProfilerServiceClient.java b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/ProfilerServiceClient.java
index 6d92688c416b..70384f841a4d 100644
--- a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/ProfilerServiceClient.java
+++ b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/ProfilerServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -177,6 +178,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProfilerServiceClient implements BackgroundResource {
   private final ProfilerServiceSettings settings;
diff --git a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/ProfilerServiceSettings.java b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/ProfilerServiceSettings.java
index 9c6cf661f2e2..56a2bb7ced29 100644
--- a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/ProfilerServiceSettings.java
+++ b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/ProfilerServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProfilerServiceSettings extends ClientSettings<ProfilerServiceSettings> {
 
diff --git a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/ExportServiceStub.java b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/ExportServiceStub.java
index a63f123a92de..fcf76f45c4d7 100644
--- a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/ExportServiceStub.java
+++ b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/ExportServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.devtools.cloudprofiler.v2.ListProfilesRequest;
 import com.google.devtools.cloudprofiler.v2.ListProfilesResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ExportServiceStub implements BackgroundResource {
 
diff --git a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/ExportServiceStubSettings.java b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/ExportServiceStubSettings.java
index 08f48edbef62..5780c9a8d351 100644
--- a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/ExportServiceStubSettings.java
+++ b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/ExportServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ExportServiceStubSettings extends StubSettings<ExportServiceStubSettings> {
diff --git a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/GrpcExportServiceCallableFactory.java b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/GrpcExportServiceCallableFactory.java
index a14557de3a51..d47a7deba47b 100644
--- a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/GrpcExportServiceCallableFactory.java
+++ b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/GrpcExportServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcExportServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/GrpcExportServiceStub.java b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/GrpcExportServiceStub.java
index ecc6ebeaac92..5bb72883dc0c 100644
--- a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/GrpcExportServiceStub.java
+++ b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/GrpcExportServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcExportServiceStub extends ExportServiceStub {
   private static final MethodDescriptor<ListProfilesRequest, ListProfilesResponse>
diff --git a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/GrpcProfilerServiceCallableFactory.java b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/GrpcProfilerServiceCallableFactory.java
index 4f92dd2661d1..823a4d86e469 100644
--- a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/GrpcProfilerServiceCallableFactory.java
+++ b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/GrpcProfilerServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcProfilerServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/GrpcProfilerServiceStub.java b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/GrpcProfilerServiceStub.java
index f3a097a25e08..998959830d77 100644
--- a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/GrpcProfilerServiceStub.java
+++ b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/GrpcProfilerServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcProfilerServiceStub extends ProfilerServiceStub {
   private static final MethodDescriptor<CreateProfileRequest, Profile>
diff --git a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/HttpJsonExportServiceCallableFactory.java b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/HttpJsonExportServiceCallableFactory.java
index 68ddebed16b1..f0b3298f6539 100644
--- a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/HttpJsonExportServiceCallableFactory.java
+++ b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/HttpJsonExportServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonExportServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/HttpJsonExportServiceStub.java b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/HttpJsonExportServiceStub.java
index 64896d652c6a..ad7a30c51028 100644
--- a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/HttpJsonExportServiceStub.java
+++ b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/HttpJsonExportServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonExportServiceStub extends ExportServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/HttpJsonProfilerServiceCallableFactory.java b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/HttpJsonProfilerServiceCallableFactory.java
index f0df66329092..7eeb7cf31f34 100644
--- a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/HttpJsonProfilerServiceCallableFactory.java
+++ b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/HttpJsonProfilerServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProfilerServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/HttpJsonProfilerServiceStub.java b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/HttpJsonProfilerServiceStub.java
index 4d4b01d71144..931479fd9131 100644
--- a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/HttpJsonProfilerServiceStub.java
+++ b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/HttpJsonProfilerServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProfilerServiceStub extends ProfilerServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/ProfilerServiceStub.java b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/ProfilerServiceStub.java
index 03bf71ce6644..ffeefb95e7b3 100644
--- a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/ProfilerServiceStub.java
+++ b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/ProfilerServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.devtools.cloudprofiler.v2.Profile;
 import com.google.devtools.cloudprofiler.v2.UpdateProfileRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ProfilerServiceStub implements BackgroundResource {
 
diff --git a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/ProfilerServiceStubSettings.java b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/ProfilerServiceStubSettings.java
index e009832ad50d..519581bac2ea 100644
--- a/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/ProfilerServiceStubSettings.java
+++ b/java-profiler/google-cloud-profiler/src/main/java/com/google/devtools/cloudprofiler/v2/stub/ProfilerServiceStubSettings.java
@@ -48,6 +48,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ProfilerServiceStubSettings extends StubSettings<ProfilerServiceStubSettings> {
diff --git a/java-profiler/proto-google-cloud-profiler-v2/src/main/java/com/google/devtools/cloudprofiler/v2/ProjectName.java b/java-profiler/proto-google-cloud-profiler-v2/src/main/java/com/google/devtools/cloudprofiler/v2/ProjectName.java
index 212bf9957fda..6774051fcc6d 100644
--- a/java-profiler/proto-google-cloud-profiler-v2/src/main/java/com/google/devtools/cloudprofiler/v2/ProjectName.java
+++ b/java-profiler/proto-google-cloud-profiler-v2/src/main/java/com/google/devtools/cloudprofiler/v2/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/PublicCertificateAuthorityServiceClient.java b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/PublicCertificateAuthorityServiceClient.java
index 5b0bc8cf6101..b32901544d05 100644
--- a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/PublicCertificateAuthorityServiceClient.java
+++ b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/PublicCertificateAuthorityServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PublicCertificateAuthorityServiceClient implements BackgroundResource {
   private final PublicCertificateAuthorityServiceSettings settings;
diff --git a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/PublicCertificateAuthorityServiceSettings.java b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/PublicCertificateAuthorityServiceSettings.java
index 82d49a8f8fee..54f3e8cac8c5 100644
--- a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/PublicCertificateAuthorityServiceSettings.java
+++ b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/PublicCertificateAuthorityServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PublicCertificateAuthorityServiceSettings
     extends ClientSettings<PublicCertificateAuthorityServiceSettings> {
diff --git a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/GrpcPublicCertificateAuthorityServiceCallableFactory.java b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/GrpcPublicCertificateAuthorityServiceCallableFactory.java
index d38520498f80..22b2499368af 100644
--- a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/GrpcPublicCertificateAuthorityServiceCallableFactory.java
+++ b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/GrpcPublicCertificateAuthorityServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPublicCertificateAuthorityServiceCallableFactory
     implements GrpcStubCallableFactory {
diff --git a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/GrpcPublicCertificateAuthorityServiceStub.java b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/GrpcPublicCertificateAuthorityServiceStub.java
index a3ea651f6141..10dfc1aea4bc 100644
--- a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/GrpcPublicCertificateAuthorityServiceStub.java
+++ b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/GrpcPublicCertificateAuthorityServiceStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPublicCertificateAuthorityServiceStub
     extends PublicCertificateAuthorityServiceStub {
diff --git a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/HttpJsonPublicCertificateAuthorityServiceCallableFactory.java b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/HttpJsonPublicCertificateAuthorityServiceCallableFactory.java
index 0d6270f42d53..667b903770ba 100644
--- a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/HttpJsonPublicCertificateAuthorityServiceCallableFactory.java
+++ b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/HttpJsonPublicCertificateAuthorityServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPublicCertificateAuthorityServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/HttpJsonPublicCertificateAuthorityServiceStub.java b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/HttpJsonPublicCertificateAuthorityServiceStub.java
index 33adb7223799..5cfd95ebf161 100644
--- a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/HttpJsonPublicCertificateAuthorityServiceStub.java
+++ b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/HttpJsonPublicCertificateAuthorityServiceStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPublicCertificateAuthorityServiceStub
     extends PublicCertificateAuthorityServiceStub {
diff --git a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/PublicCertificateAuthorityServiceStub.java b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/PublicCertificateAuthorityServiceStub.java
index 422a573e6afb..1ea3521b022a 100644
--- a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/PublicCertificateAuthorityServiceStub.java
+++ b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/PublicCertificateAuthorityServiceStub.java
@@ -21,6 +21,7 @@
 import com.google.cloud.security.publicca.v1.CreateExternalAccountKeyRequest;
 import com.google.cloud.security.publicca.v1.ExternalAccountKey;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PublicCertificateAuthorityServiceStub implements BackgroundResource {
 
diff --git a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/PublicCertificateAuthorityServiceStubSettings.java b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/PublicCertificateAuthorityServiceStubSettings.java
index 288ce4f3862a..68e4ea3ceb59 100644
--- a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/PublicCertificateAuthorityServiceStubSettings.java
+++ b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1/stub/PublicCertificateAuthorityServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PublicCertificateAuthorityServiceStubSettings
diff --git a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/PublicCertificateAuthorityServiceClient.java b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/PublicCertificateAuthorityServiceClient.java
index b793f779e9c8..143273ca4242 100644
--- a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/PublicCertificateAuthorityServiceClient.java
+++ b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/PublicCertificateAuthorityServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -138,6 +139,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PublicCertificateAuthorityServiceClient implements BackgroundResource {
diff --git a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/PublicCertificateAuthorityServiceSettings.java b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/PublicCertificateAuthorityServiceSettings.java
index eb36beda0797..c926e88d22f5 100644
--- a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/PublicCertificateAuthorityServiceSettings.java
+++ b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/PublicCertificateAuthorityServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PublicCertificateAuthorityServiceSettings
diff --git a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/GrpcPublicCertificateAuthorityServiceCallableFactory.java b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/GrpcPublicCertificateAuthorityServiceCallableFactory.java
index fad0578942f4..cf420527bdd8 100644
--- a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/GrpcPublicCertificateAuthorityServiceCallableFactory.java
+++ b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/GrpcPublicCertificateAuthorityServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPublicCertificateAuthorityServiceCallableFactory
diff --git a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/GrpcPublicCertificateAuthorityServiceStub.java b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/GrpcPublicCertificateAuthorityServiceStub.java
index 0c70053ab62b..3697881a9141 100644
--- a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/GrpcPublicCertificateAuthorityServiceStub.java
+++ b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/GrpcPublicCertificateAuthorityServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPublicCertificateAuthorityServiceStub
diff --git a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/HttpJsonPublicCertificateAuthorityServiceCallableFactory.java b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/HttpJsonPublicCertificateAuthorityServiceCallableFactory.java
index 016534b6769d..6efdfed13c32 100644
--- a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/HttpJsonPublicCertificateAuthorityServiceCallableFactory.java
+++ b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/HttpJsonPublicCertificateAuthorityServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPublicCertificateAuthorityServiceCallableFactory
diff --git a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/HttpJsonPublicCertificateAuthorityServiceStub.java b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/HttpJsonPublicCertificateAuthorityServiceStub.java
index 85aed7fc5172..36a3a8904025 100644
--- a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/HttpJsonPublicCertificateAuthorityServiceStub.java
+++ b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/HttpJsonPublicCertificateAuthorityServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPublicCertificateAuthorityServiceStub
diff --git a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/PublicCertificateAuthorityServiceStub.java b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/PublicCertificateAuthorityServiceStub.java
index 0d7b6929d447..b3c22668b1ab 100644
--- a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/PublicCertificateAuthorityServiceStub.java
+++ b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/PublicCertificateAuthorityServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.security.publicca.v1beta1.CreateExternalAccountKeyRequest;
 import com.google.cloud.security.publicca.v1beta1.ExternalAccountKey;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PublicCertificateAuthorityServiceStub implements BackgroundResource {
diff --git a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/PublicCertificateAuthorityServiceStubSettings.java b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/PublicCertificateAuthorityServiceStubSettings.java
index 688f66f121e9..349969aa2787 100644
--- a/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/PublicCertificateAuthorityServiceStubSettings.java
+++ b/java-publicca/google-cloud-publicca/src/main/java/com/google/cloud/security/publicca/v1beta1/stub/PublicCertificateAuthorityServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-publicca/proto-google-cloud-publicca-v1/src/main/java/com/google/cloud/security/publicca/v1/ExternalAccountKeyName.java b/java-publicca/proto-google-cloud-publicca-v1/src/main/java/com/google/cloud/security/publicca/v1/ExternalAccountKeyName.java
index 16419a53e75d..ccbbd7158d90 100644
--- a/java-publicca/proto-google-cloud-publicca-v1/src/main/java/com/google/cloud/security/publicca/v1/ExternalAccountKeyName.java
+++ b/java-publicca/proto-google-cloud-publicca-v1/src/main/java/com/google/cloud/security/publicca/v1/ExternalAccountKeyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExternalAccountKeyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_EXTERNAL_ACCOUNT_KEY =
diff --git a/java-publicca/proto-google-cloud-publicca-v1/src/main/java/com/google/cloud/security/publicca/v1/LocationName.java b/java-publicca/proto-google-cloud-publicca-v1/src/main/java/com/google/cloud/security/publicca/v1/LocationName.java
index c9509eeea2ba..c89a0c3e14c8 100644
--- a/java-publicca/proto-google-cloud-publicca-v1/src/main/java/com/google/cloud/security/publicca/v1/LocationName.java
+++ b/java-publicca/proto-google-cloud-publicca-v1/src/main/java/com/google/cloud/security/publicca/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-publicca/proto-google-cloud-publicca-v1beta1/src/main/java/com/google/cloud/security/publicca/v1beta1/ExternalAccountKeyName.java b/java-publicca/proto-google-cloud-publicca-v1beta1/src/main/java/com/google/cloud/security/publicca/v1beta1/ExternalAccountKeyName.java
index 285016649c5a..c084d304a48d 100644
--- a/java-publicca/proto-google-cloud-publicca-v1beta1/src/main/java/com/google/cloud/security/publicca/v1beta1/ExternalAccountKeyName.java
+++ b/java-publicca/proto-google-cloud-publicca-v1beta1/src/main/java/com/google/cloud/security/publicca/v1beta1/ExternalAccountKeyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExternalAccountKeyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_EXTERNAL_ACCOUNT_KEY =
diff --git a/java-publicca/proto-google-cloud-publicca-v1beta1/src/main/java/com/google/cloud/security/publicca/v1beta1/LocationName.java b/java-publicca/proto-google-cloud-publicca-v1beta1/src/main/java/com/google/cloud/security/publicca/v1beta1/LocationName.java
index d94bdb6a8f5f..e33cf5323cf2 100644
--- a/java-publicca/proto-google-cloud-publicca-v1beta1/src/main/java/com/google/cloud/security/publicca/v1beta1/LocationName.java
+++ b/java-publicca/proto-google-cloud-publicca-v1beta1/src/main/java/com/google/cloud/security/publicca/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/SchemaServiceClient.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/SchemaServiceClient.java
index 74f1e9f1f71b..8ddc5961ebf7 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/SchemaServiceClient.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/SchemaServiceClient.java
@@ -54,6 +54,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -372,6 +373,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SchemaServiceClient implements BackgroundResource {
   private final SchemaServiceSettings settings;
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/SchemaServiceSettings.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/SchemaServiceSettings.java
index 44585d85c7f5..faf102c625a8 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/SchemaServiceSettings.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/SchemaServiceSettings.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -106,6 +107,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SchemaServiceSettings extends ClientSettings<SchemaServiceSettings> {
 
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/SubscriptionAdminClient.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/SubscriptionAdminClient.java
index 26a764dab3bf..4d939bc80c63 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/SubscriptionAdminClient.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/SubscriptionAdminClient.java
@@ -69,6 +69,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -507,6 +508,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SubscriptionAdminClient implements BackgroundResource {
   private final SubscriptionAdminSettings settings;
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/SubscriptionAdminSettings.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/SubscriptionAdminSettings.java
index 8fe62a63f574..a36f3bd03378 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/SubscriptionAdminSettings.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/SubscriptionAdminSettings.java
@@ -64,6 +64,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SubscriptionAdminSettings extends ClientSettings<SubscriptionAdminSettings> {
 
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/TopicAdminClient.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/TopicAdminClient.java
index 91dfd103e688..13c8576f8cbc 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/TopicAdminClient.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/TopicAdminClient.java
@@ -56,6 +56,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -353,6 +354,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TopicAdminClient implements BackgroundResource {
   private final TopicAdminSettings settings;
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/TopicAdminSettings.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/TopicAdminSettings.java
index 4928dd762597..6c160daff6d0 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/TopicAdminSettings.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/TopicAdminSettings.java
@@ -57,6 +57,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TopicAdminSettings extends ClientSettings<TopicAdminSettings> {
 
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcPublisherCallableFactory.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcPublisherCallableFactory.java
index 92adc0c86116..c7804ce55579 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcPublisherCallableFactory.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcPublisherCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPublisherCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcPublisherStub.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcPublisherStub.java
index 137efe471c57..7a70aca1b686 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcPublisherStub.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcPublisherStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPublisherStub extends PublisherStub {
   private static final MethodDescriptor<Topic, Topic> createTopicMethodDescriptor =
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcSchemaServiceCallableFactory.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcSchemaServiceCallableFactory.java
index 16236bc4bd0d..4f6d2494195e 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcSchemaServiceCallableFactory.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcSchemaServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSchemaServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcSchemaServiceStub.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcSchemaServiceStub.java
index a13604e4b0c9..84cab7939eac 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcSchemaServiceStub.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcSchemaServiceStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSchemaServiceStub extends SchemaServiceStub {
   private static final MethodDescriptor<CreateSchemaRequest, Schema> createSchemaMethodDescriptor =
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcSubscriberCallableFactory.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcSubscriberCallableFactory.java
index 8249a721942b..92193648b691 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcSubscriberCallableFactory.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcSubscriberCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSubscriberCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcSubscriberStub.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcSubscriberStub.java
index 6c51332e6eca..c90a2b23cd7e 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcSubscriberStub.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/GrpcSubscriberStub.java
@@ -61,6 +61,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSubscriberStub extends SubscriberStub {
   private static final MethodDescriptor<Subscription, Subscription>
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonPublisherCallableFactory.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonPublisherCallableFactory.java
index f9da3ee7f673..6adacfc5f462 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonPublisherCallableFactory.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonPublisherCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPublisherCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonPublisherStub.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonPublisherStub.java
index 011a019deb66..1c07dd2e8719 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonPublisherStub.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonPublisherStub.java
@@ -60,6 +60,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPublisherStub extends PublisherStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonSchemaServiceCallableFactory.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonSchemaServiceCallableFactory.java
index b725059aaf2e..202a02b708be 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonSchemaServiceCallableFactory.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonSchemaServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSchemaServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonSchemaServiceStub.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonSchemaServiceStub.java
index d8f726b6f055..0a5818b10dc0 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonSchemaServiceStub.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonSchemaServiceStub.java
@@ -60,6 +60,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSchemaServiceStub extends SchemaServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonSubscriberCallableFactory.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonSubscriberCallableFactory.java
index a719f85ef8f6..32f625c5c0a2 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonSubscriberCallableFactory.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonSubscriberCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSubscriberCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonSubscriberStub.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonSubscriberStub.java
index ce9647bd2aeb..555767ab50f8 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonSubscriberStub.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/HttpJsonSubscriberStub.java
@@ -68,6 +68,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSubscriberStub extends SubscriberStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/PublisherStub.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/PublisherStub.java
index 5c7f9d6a89be..8b1ab98e2311 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/PublisherStub.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/PublisherStub.java
@@ -43,6 +43,7 @@
 import com.google.pubsub.v1.Topic;
 import com.google.pubsub.v1.UpdateTopicRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PublisherStub implements BackgroundResource {
 
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/PublisherStubSettings.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/PublisherStubSettings.java
index dcc268153f40..30bf406a3326 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/PublisherStubSettings.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/PublisherStubSettings.java
@@ -85,6 +85,7 @@
 import java.util.Collection;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -135,6 +136,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PublisherStubSettings extends StubSettings<PublisherStubSettings> {
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SchemaServiceStub.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SchemaServiceStub.java
index a0335a4b1fed..a06076e66b54 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SchemaServiceStub.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SchemaServiceStub.java
@@ -43,6 +43,7 @@
 import com.google.pubsub.v1.ValidateSchemaRequest;
 import com.google.pubsub.v1.ValidateSchemaResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SchemaServiceStub implements BackgroundResource {
 
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SchemaServiceStubSettings.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SchemaServiceStubSettings.java
index 21b078273142..601e64d0efd0 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SchemaServiceStubSettings.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SchemaServiceStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SchemaServiceStubSettings extends StubSettings<SchemaServiceStubSettings> {
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SubscriberStub.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SubscriberStub.java
index 115a2f2c82ae..13424d099837 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SubscriberStub.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SubscriberStub.java
@@ -51,6 +51,7 @@
 import com.google.pubsub.v1.UpdateSnapshotRequest;
 import com.google.pubsub.v1.UpdateSubscriptionRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SubscriberStub implements BackgroundResource {
 
diff --git a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SubscriberStubSettings.java b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SubscriberStubSettings.java
index 63249c9d6d8e..d278ccbaacfa 100644
--- a/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SubscriberStubSettings.java
+++ b/java-pubsub/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SubscriberStubSettings.java
@@ -83,6 +83,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -134,6 +135,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SubscriberStubSettings extends StubSettings<SubscriberStubSettings> {
diff --git a/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/CryptoKeyName.java b/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/CryptoKeyName.java
index c2b1411cbd9f..023a4087c89a 100644
--- a/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/CryptoKeyName.java
+++ b/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/CryptoKeyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CryptoKeyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_KEY_RING_CRYPTO_KEY =
diff --git a/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/ProjectName.java b/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/ProjectName.java
index a4f599b17206..2db74834b0de 100644
--- a/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/ProjectName.java
+++ b/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/SchemaName.java b/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/SchemaName.java
index b3eaa772f014..a7fcd22be396 100644
--- a/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/SchemaName.java
+++ b/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/SchemaName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SchemaName implements ResourceName {
   private static final PathTemplate PROJECT_SCHEMA =
diff --git a/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/SnapshotName.java b/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/SnapshotName.java
index a3a2342396c2..bbeafc6c4ddb 100644
--- a/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/SnapshotName.java
+++ b/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/SnapshotName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SnapshotName implements ResourceName {
   private static final PathTemplate PROJECT_SNAPSHOT =
diff --git a/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/SubscriptionName.java b/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/SubscriptionName.java
index 2c12a10dcde1..8ea245778aab 100644
--- a/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/SubscriptionName.java
+++ b/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/SubscriptionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SubscriptionName implements ResourceName {
   private static final PathTemplate PROJECT_SUBSCRIPTION =
diff --git a/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/TopicName.java b/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/TopicName.java
index 0a21c87d864e..fd87c2b97f2a 100644
--- a/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/TopicName.java
+++ b/java-pubsub/proto-google-cloud-pubsub-v1/src/main/java/com/google/pubsub/v1/TopicName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TopicName implements ResourceName {
   private static final PathTemplate PROJECT_TOPIC =
diff --git a/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/RapidMigrationAssessmentClient.java b/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/RapidMigrationAssessmentClient.java
index f2204f3a34da..a55959797714 100644
--- a/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/RapidMigrationAssessmentClient.java
+++ b/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/RapidMigrationAssessmentClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -357,6 +358,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RapidMigrationAssessmentClient implements BackgroundResource {
   private final RapidMigrationAssessmentSettings settings;
diff --git a/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/RapidMigrationAssessmentSettings.java b/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/RapidMigrationAssessmentSettings.java
index 65b2c2ea1b77..807f567301e2 100644
--- a/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/RapidMigrationAssessmentSettings.java
+++ b/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/RapidMigrationAssessmentSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RapidMigrationAssessmentSettings
     extends ClientSettings<RapidMigrationAssessmentSettings> {
diff --git a/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/GrpcRapidMigrationAssessmentCallableFactory.java b/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/GrpcRapidMigrationAssessmentCallableFactory.java
index c00202908ffa..9838eff20d4e 100644
--- a/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/GrpcRapidMigrationAssessmentCallableFactory.java
+++ b/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/GrpcRapidMigrationAssessmentCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRapidMigrationAssessmentCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/GrpcRapidMigrationAssessmentStub.java b/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/GrpcRapidMigrationAssessmentStub.java
index 381bbc362597..9936741e2f30 100644
--- a/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/GrpcRapidMigrationAssessmentStub.java
+++ b/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/GrpcRapidMigrationAssessmentStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRapidMigrationAssessmentStub extends RapidMigrationAssessmentStub {
   private static final MethodDescriptor<CreateCollectorRequest, Operation>
diff --git a/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/HttpJsonRapidMigrationAssessmentCallableFactory.java b/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/HttpJsonRapidMigrationAssessmentCallableFactory.java
index 093d29b94a66..e00ea6de7fdc 100644
--- a/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/HttpJsonRapidMigrationAssessmentCallableFactory.java
+++ b/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/HttpJsonRapidMigrationAssessmentCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRapidMigrationAssessmentCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/HttpJsonRapidMigrationAssessmentStub.java b/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/HttpJsonRapidMigrationAssessmentStub.java
index 78853ee9a8fb..7a03fac2b1b3 100644
--- a/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/HttpJsonRapidMigrationAssessmentStub.java
+++ b/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/HttpJsonRapidMigrationAssessmentStub.java
@@ -63,6 +63,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRapidMigrationAssessmentStub extends RapidMigrationAssessmentStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/RapidMigrationAssessmentStub.java b/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/RapidMigrationAssessmentStub.java
index 59b4694cc037..bff22d670a0c 100644
--- a/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/RapidMigrationAssessmentStub.java
+++ b/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/RapidMigrationAssessmentStub.java
@@ -43,6 +43,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RapidMigrationAssessmentStub implements BackgroundResource {
 
diff --git a/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/RapidMigrationAssessmentStubSettings.java b/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/RapidMigrationAssessmentStubSettings.java
index 74d3593f98b5..48feb85203f2 100644
--- a/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/RapidMigrationAssessmentStubSettings.java
+++ b/java-rapidmigrationassessment/google-cloud-rapidmigrationassessment/src/main/java/com/google/cloud/rapidmigrationassessment/v1/stub/RapidMigrationAssessmentStubSettings.java
@@ -77,6 +77,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RapidMigrationAssessmentStubSettings
diff --git a/java-rapidmigrationassessment/proto-google-cloud-rapidmigrationassessment-v1/src/main/java/com/google/cloud/rapidmigrationassessment/v1/AnnotationName.java b/java-rapidmigrationassessment/proto-google-cloud-rapidmigrationassessment-v1/src/main/java/com/google/cloud/rapidmigrationassessment/v1/AnnotationName.java
index dcd6b04d4a8a..b34edb3771ac 100644
--- a/java-rapidmigrationassessment/proto-google-cloud-rapidmigrationassessment-v1/src/main/java/com/google/cloud/rapidmigrationassessment/v1/AnnotationName.java
+++ b/java-rapidmigrationassessment/proto-google-cloud-rapidmigrationassessment-v1/src/main/java/com/google/cloud/rapidmigrationassessment/v1/AnnotationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnnotationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ANNOTATION =
diff --git a/java-rapidmigrationassessment/proto-google-cloud-rapidmigrationassessment-v1/src/main/java/com/google/cloud/rapidmigrationassessment/v1/CollectorName.java b/java-rapidmigrationassessment/proto-google-cloud-rapidmigrationassessment-v1/src/main/java/com/google/cloud/rapidmigrationassessment/v1/CollectorName.java
index f35232786bc8..04144c779bba 100644
--- a/java-rapidmigrationassessment/proto-google-cloud-rapidmigrationassessment-v1/src/main/java/com/google/cloud/rapidmigrationassessment/v1/CollectorName.java
+++ b/java-rapidmigrationassessment/proto-google-cloud-rapidmigrationassessment-v1/src/main/java/com/google/cloud/rapidmigrationassessment/v1/CollectorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CollectorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_COLLECTOR =
diff --git a/java-rapidmigrationassessment/proto-google-cloud-rapidmigrationassessment-v1/src/main/java/com/google/cloud/rapidmigrationassessment/v1/LocationName.java b/java-rapidmigrationassessment/proto-google-cloud-rapidmigrationassessment-v1/src/main/java/com/google/cloud/rapidmigrationassessment/v1/LocationName.java
index fd5ca5560930..b9beb1eb54f5 100644
--- a/java-rapidmigrationassessment/proto-google-cloud-rapidmigrationassessment-v1/src/main/java/com/google/cloud/rapidmigrationassessment/v1/LocationName.java
+++ b/java-rapidmigrationassessment/proto-google-cloud-rapidmigrationassessment-v1/src/main/java/com/google/cloud/rapidmigrationassessment/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/RecaptchaEnterpriseServiceClient.java b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/RecaptchaEnterpriseServiceClient.java
index 78886bcd06c5..b5c447b997df 100644
--- a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/RecaptchaEnterpriseServiceClient.java
+++ b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/RecaptchaEnterpriseServiceClient.java
@@ -80,6 +80,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -581,6 +582,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RecaptchaEnterpriseServiceClient implements BackgroundResource {
   private final RecaptchaEnterpriseServiceSettings settings;
diff --git a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/RecaptchaEnterpriseServiceSettings.java b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/RecaptchaEnterpriseServiceSettings.java
index 59522a4feafb..750a9478a29a 100644
--- a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/RecaptchaEnterpriseServiceSettings.java
+++ b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/RecaptchaEnterpriseServiceSettings.java
@@ -75,6 +75,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -128,6 +129,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RecaptchaEnterpriseServiceSettings
     extends ClientSettings<RecaptchaEnterpriseServiceSettings> {
diff --git a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/GrpcRecaptchaEnterpriseServiceCallableFactory.java b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/GrpcRecaptchaEnterpriseServiceCallableFactory.java
index 9ab59b689bbf..9df4af9caeb1 100644
--- a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/GrpcRecaptchaEnterpriseServiceCallableFactory.java
+++ b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/GrpcRecaptchaEnterpriseServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRecaptchaEnterpriseServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/GrpcRecaptchaEnterpriseServiceStub.java b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/GrpcRecaptchaEnterpriseServiceStub.java
index c7ec06193807..f11821cad6d3 100644
--- a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/GrpcRecaptchaEnterpriseServiceStub.java
+++ b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/GrpcRecaptchaEnterpriseServiceStub.java
@@ -74,6 +74,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRecaptchaEnterpriseServiceStub extends RecaptchaEnterpriseServiceStub {
   private static final MethodDescriptor<CreateAssessmentRequest, Assessment>
diff --git a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/RecaptchaEnterpriseServiceStub.java b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/RecaptchaEnterpriseServiceStub.java
index 6940ba8e816a..f619e686cafd 100644
--- a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/RecaptchaEnterpriseServiceStub.java
+++ b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/RecaptchaEnterpriseServiceStub.java
@@ -64,6 +64,7 @@
 import com.google.recaptchaenterprise.v1.UpdateFirewallPolicyRequest;
 import com.google.recaptchaenterprise.v1.UpdateKeyRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RecaptchaEnterpriseServiceStub implements BackgroundResource {
 
diff --git a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/RecaptchaEnterpriseServiceStubSettings.java b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/RecaptchaEnterpriseServiceStubSettings.java
index a592cf168da4..51031d64cbea 100644
--- a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/RecaptchaEnterpriseServiceStubSettings.java
+++ b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1/stub/RecaptchaEnterpriseServiceStubSettings.java
@@ -95,6 +95,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RecaptchaEnterpriseServiceStubSettings
diff --git a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/RecaptchaEnterpriseServiceV1Beta1Client.java b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/RecaptchaEnterpriseServiceV1Beta1Client.java
index 01c82f3366c8..4fc999ce6a42 100644
--- a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/RecaptchaEnterpriseServiceV1Beta1Client.java
+++ b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/RecaptchaEnterpriseServiceV1Beta1Client.java
@@ -30,6 +30,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -160,6 +161,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class RecaptchaEnterpriseServiceV1Beta1Client implements BackgroundResource {
diff --git a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/RecaptchaEnterpriseServiceV1Beta1Settings.java b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/RecaptchaEnterpriseServiceV1Beta1Settings.java
index 1ae1cda31a30..6d49f8fea1e7 100644
--- a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/RecaptchaEnterpriseServiceV1Beta1Settings.java
+++ b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/RecaptchaEnterpriseServiceV1Beta1Settings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class RecaptchaEnterpriseServiceV1Beta1Settings
diff --git a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/GrpcRecaptchaEnterpriseServiceV1Beta1CallableFactory.java b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/GrpcRecaptchaEnterpriseServiceV1Beta1CallableFactory.java
index 5fd64417689c..3876d2a07849 100644
--- a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/GrpcRecaptchaEnterpriseServiceV1Beta1CallableFactory.java
+++ b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/GrpcRecaptchaEnterpriseServiceV1Beta1CallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcRecaptchaEnterpriseServiceV1Beta1CallableFactory
diff --git a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/GrpcRecaptchaEnterpriseServiceV1Beta1Stub.java b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/GrpcRecaptchaEnterpriseServiceV1Beta1Stub.java
index 3b4222bee22b..8f4a9898ccfb 100644
--- a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/GrpcRecaptchaEnterpriseServiceV1Beta1Stub.java
+++ b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/GrpcRecaptchaEnterpriseServiceV1Beta1Stub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcRecaptchaEnterpriseServiceV1Beta1Stub
diff --git a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/HttpJsonRecaptchaEnterpriseServiceV1Beta1CallableFactory.java b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/HttpJsonRecaptchaEnterpriseServiceV1Beta1CallableFactory.java
index 8f57c55fcde1..dd1850fa74ff 100644
--- a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/HttpJsonRecaptchaEnterpriseServiceV1Beta1CallableFactory.java
+++ b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/HttpJsonRecaptchaEnterpriseServiceV1Beta1CallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonRecaptchaEnterpriseServiceV1Beta1CallableFactory
diff --git a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/HttpJsonRecaptchaEnterpriseServiceV1Beta1Stub.java b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/HttpJsonRecaptchaEnterpriseServiceV1Beta1Stub.java
index 56970a87eebc..e1ba1db9e94b 100644
--- a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/HttpJsonRecaptchaEnterpriseServiceV1Beta1Stub.java
+++ b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/HttpJsonRecaptchaEnterpriseServiceV1Beta1Stub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonRecaptchaEnterpriseServiceV1Beta1Stub
diff --git a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/RecaptchaEnterpriseServiceV1Beta1Stub.java b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/RecaptchaEnterpriseServiceV1Beta1Stub.java
index a3f5ae45694c..7b366f6dd0cd 100644
--- a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/RecaptchaEnterpriseServiceV1Beta1Stub.java
+++ b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/RecaptchaEnterpriseServiceV1Beta1Stub.java
@@ -24,6 +24,7 @@
 import com.google.recaptchaenterprise.v1beta1.Assessment;
 import com.google.recaptchaenterprise.v1beta1.CreateAssessmentRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class RecaptchaEnterpriseServiceV1Beta1Stub implements BackgroundResource {
diff --git a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/RecaptchaEnterpriseServiceV1Beta1StubSettings.java b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/RecaptchaEnterpriseServiceV1Beta1StubSettings.java
index 962c36dd9ca5..1837a0fb13c3 100644
--- a/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/RecaptchaEnterpriseServiceV1Beta1StubSettings.java
+++ b/java-recaptchaenterprise/google-cloud-recaptchaenterprise/src/main/java/com/google/cloud/recaptchaenterprise/v1beta1/stub/RecaptchaEnterpriseServiceV1Beta1StubSettings.java
@@ -48,6 +48,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/AssessmentName.java b/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/AssessmentName.java
index 6e4d9164b928..17c824f103e9 100644
--- a/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/AssessmentName.java
+++ b/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/AssessmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AssessmentName implements ResourceName {
   private static final PathTemplate PROJECT_ASSESSMENT =
diff --git a/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/FirewallPolicyName.java b/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/FirewallPolicyName.java
index d3d29644a862..00d193a4b6c6 100644
--- a/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/FirewallPolicyName.java
+++ b/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/FirewallPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FirewallPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_FIREWALLPOLICY =
diff --git a/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/KeyName.java b/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/KeyName.java
index adfb6294c3f9..613c93d8cab2 100644
--- a/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/KeyName.java
+++ b/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/KeyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class KeyName implements ResourceName {
   private static final PathTemplate PROJECT_KEY =
diff --git a/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/MetricsName.java b/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/MetricsName.java
index d094547deb07..92a170302479 100644
--- a/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/MetricsName.java
+++ b/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/MetricsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MetricsName implements ResourceName {
   private static final PathTemplate PROJECT_KEY =
diff --git a/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/ProjectName.java b/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/ProjectName.java
index 5317e4785a3a..6aa789f7ed10 100644
--- a/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/ProjectName.java
+++ b/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/RelatedAccountGroupMembershipName.java b/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/RelatedAccountGroupMembershipName.java
index 9c25539a159f..20b958883181 100644
--- a/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/RelatedAccountGroupMembershipName.java
+++ b/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/RelatedAccountGroupMembershipName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RelatedAccountGroupMembershipName implements ResourceName {
   private static final PathTemplate PROJECT_RELATEDACCOUNTGROUP_MEMBERSHIP =
diff --git a/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/RelatedAccountGroupName.java b/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/RelatedAccountGroupName.java
index 0b4f0e4f9438..4eb1d8707987 100644
--- a/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/RelatedAccountGroupName.java
+++ b/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1/src/main/java/com/google/recaptchaenterprise/v1/RelatedAccountGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RelatedAccountGroupName implements ResourceName {
   private static final PathTemplate PROJECT_RELATEDACCOUNTGROUP =
diff --git a/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1beta1/src/main/java/com/google/recaptchaenterprise/v1beta1/AssessmentName.java b/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1beta1/src/main/java/com/google/recaptchaenterprise/v1beta1/AssessmentName.java
index b14d88244a9c..558218328e36 100644
--- a/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1beta1/src/main/java/com/google/recaptchaenterprise/v1beta1/AssessmentName.java
+++ b/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1beta1/src/main/java/com/google/recaptchaenterprise/v1beta1/AssessmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AssessmentName implements ResourceName {
   private static final PathTemplate PROJECT_ASSESSMENT =
diff --git a/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1beta1/src/main/java/com/google/recaptchaenterprise/v1beta1/ProjectName.java b/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1beta1/src/main/java/com/google/recaptchaenterprise/v1beta1/ProjectName.java
index b54e1e131a50..e6678e4e5cc8 100644
--- a/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1beta1/src/main/java/com/google/recaptchaenterprise/v1beta1/ProjectName.java
+++ b/java-recaptchaenterprise/proto-google-cloud-recaptchaenterprise-v1beta1/src/main/java/com/google/recaptchaenterprise/v1beta1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/CatalogServiceClient.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/CatalogServiceClient.java
index 4c7399971f06..296804554a85 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/CatalogServiceClient.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/CatalogServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -238,6 +239,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CatalogServiceClient implements BackgroundResource {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/CatalogServiceSettings.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/CatalogServiceSettings.java
index 70729e2f9cc7..0b8ff65dab14 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/CatalogServiceSettings.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/CatalogServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CatalogServiceSettings extends ClientSettings<CatalogServiceSettings> {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionApiKeyRegistryClient.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionApiKeyRegistryClient.java
index fe631ffd9f5a..2a7f8dce2561 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionApiKeyRegistryClient.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionApiKeyRegistryClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -189,6 +190,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PredictionApiKeyRegistryClient implements BackgroundResource {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionApiKeyRegistrySettings.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionApiKeyRegistrySettings.java
index 631f4829457f..14ec73ed420d 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionApiKeyRegistrySettings.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionApiKeyRegistrySettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PredictionApiKeyRegistrySettings
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionServiceClient.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionServiceClient.java
index 6b31b7598cf0..40fb4b3fd4f3 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionServiceClient.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PredictionServiceClient implements BackgroundResource {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionServiceSettings.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionServiceSettings.java
index f3b700d7e503..370ca70e164c 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionServiceSettings.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PredictionServiceSettings extends ClientSettings<PredictionServiceSettings> {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/UserEventServiceClient.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/UserEventServiceClient.java
index b0b972e41a34..983625b2a61d 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/UserEventServiceClient.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/UserEventServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -225,6 +226,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class UserEventServiceClient implements BackgroundResource {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/UserEventServiceSettings.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/UserEventServiceSettings.java
index 6de4ca1019ab..d3e6e71fbd59 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/UserEventServiceSettings.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/UserEventServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class UserEventServiceSettings extends ClientSettings<UserEventServiceSettings> {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/CatalogServiceStub.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/CatalogServiceStub.java
index 810dbe029167..26ab87b429ff 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/CatalogServiceStub.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/CatalogServiceStub.java
@@ -36,6 +36,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CatalogServiceStub implements BackgroundResource {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/CatalogServiceStubSettings.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/CatalogServiceStubSettings.java
index 3dbf2aa2750d..25f88b128c0c 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/CatalogServiceStubSettings.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/CatalogServiceStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcCatalogServiceCallableFactory.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcCatalogServiceCallableFactory.java
index 250ca5ef106e..f964aef0aed7 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcCatalogServiceCallableFactory.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcCatalogServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCatalogServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcCatalogServiceStub.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcCatalogServiceStub.java
index e70d7d24ebaf..ba52f04472a0 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcCatalogServiceStub.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcCatalogServiceStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCatalogServiceStub extends CatalogServiceStub {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcPredictionApiKeyRegistryCallableFactory.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcPredictionApiKeyRegistryCallableFactory.java
index f153cffdf490..16ddd9e583b5 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcPredictionApiKeyRegistryCallableFactory.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcPredictionApiKeyRegistryCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPredictionApiKeyRegistryCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcPredictionApiKeyRegistryStub.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcPredictionApiKeyRegistryStub.java
index 56c4ea87fef6..61d93a209d0c 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcPredictionApiKeyRegistryStub.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcPredictionApiKeyRegistryStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPredictionApiKeyRegistryStub extends PredictionApiKeyRegistryStub {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcPredictionServiceCallableFactory.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcPredictionServiceCallableFactory.java
index 3fb20a530fb9..7099dd0c1ca1 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcPredictionServiceCallableFactory.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcPredictionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPredictionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcPredictionServiceStub.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcPredictionServiceStub.java
index 548e2f90d986..299ff58caf12 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcPredictionServiceStub.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcPredictionServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPredictionServiceStub extends PredictionServiceStub {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcUserEventServiceCallableFactory.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcUserEventServiceCallableFactory.java
index 9dc1abdc4581..68576623c74c 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcUserEventServiceCallableFactory.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcUserEventServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcUserEventServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcUserEventServiceStub.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcUserEventServiceStub.java
index d1e6cc13a7ae..f289ba48370b 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcUserEventServiceStub.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/GrpcUserEventServiceStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcUserEventServiceStub extends UserEventServiceStub {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonCatalogServiceCallableFactory.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonCatalogServiceCallableFactory.java
index f5b340dfe9f4..54c3feb1856e 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonCatalogServiceCallableFactory.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonCatalogServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCatalogServiceCallableFactory
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonCatalogServiceStub.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonCatalogServiceStub.java
index 01c3768ca39e..d99c0fad53c9 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonCatalogServiceStub.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonCatalogServiceStub.java
@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCatalogServiceStub extends CatalogServiceStub {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonPredictionApiKeyRegistryCallableFactory.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonPredictionApiKeyRegistryCallableFactory.java
index cf148e292da8..4a04a6c83d18 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonPredictionApiKeyRegistryCallableFactory.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonPredictionApiKeyRegistryCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPredictionApiKeyRegistryCallableFactory
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonPredictionApiKeyRegistryStub.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonPredictionApiKeyRegistryStub.java
index acdcad582170..92f3282a3163 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonPredictionApiKeyRegistryStub.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonPredictionApiKeyRegistryStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPredictionApiKeyRegistryStub extends PredictionApiKeyRegistryStub {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonPredictionServiceCallableFactory.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonPredictionServiceCallableFactory.java
index a1837aa89a31..ccc2b89938eb 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonPredictionServiceCallableFactory.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonPredictionServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPredictionServiceCallableFactory
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonPredictionServiceStub.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonPredictionServiceStub.java
index f8fe160175b1..a73b100e428a 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonPredictionServiceStub.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonPredictionServiceStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPredictionServiceStub extends PredictionServiceStub {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonUserEventServiceCallableFactory.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonUserEventServiceCallableFactory.java
index d72317f69378..9f2a7e45acb0 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonUserEventServiceCallableFactory.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonUserEventServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonUserEventServiceCallableFactory
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonUserEventServiceStub.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonUserEventServiceStub.java
index da1ea5144d78..b29a47d17027 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonUserEventServiceStub.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/HttpJsonUserEventServiceStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonUserEventServiceStub extends UserEventServiceStub {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/PredictionApiKeyRegistryStub.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/PredictionApiKeyRegistryStub.java
index 6d07cdbabf02..645323e80c10 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/PredictionApiKeyRegistryStub.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/PredictionApiKeyRegistryStub.java
@@ -28,6 +28,7 @@
 import com.google.cloud.recommendationengine.v1beta1.PredictionApiKeyRegistration;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PredictionApiKeyRegistryStub implements BackgroundResource {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/PredictionApiKeyRegistryStubSettings.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/PredictionApiKeyRegistryStubSettings.java
index be4c42b4029c..46624b4efe77 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/PredictionApiKeyRegistryStubSettings.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/PredictionApiKeyRegistryStubSettings.java
@@ -59,6 +59,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/PredictionServiceStub.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/PredictionServiceStub.java
index 97ce265f6768..0eee6a680b30 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/PredictionServiceStub.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/PredictionServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.cloud.recommendationengine.v1beta1.PredictRequest;
 import com.google.cloud.recommendationengine.v1beta1.PredictResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PredictionServiceStub implements BackgroundResource {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/PredictionServiceStubSettings.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/PredictionServiceStubSettings.java
index 1ba16967cc39..dac2d490376c 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/PredictionServiceStubSettings.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/PredictionServiceStubSettings.java
@@ -57,6 +57,7 @@
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/UserEventServiceStub.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/UserEventServiceStub.java
index 760fa9eeca45..36cbf5fc9919 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/UserEventServiceStub.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/UserEventServiceStub.java
@@ -37,6 +37,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class UserEventServiceStub implements BackgroundResource {
diff --git a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/UserEventServiceStubSettings.java b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/UserEventServiceStubSettings.java
index 552ef4c02170..7732e52635a5 100644
--- a/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/UserEventServiceStubSettings.java
+++ b/java-recommendations-ai/google-cloud-recommendations-ai/src/main/java/com/google/cloud/recommendationengine/v1beta1/stub/UserEventServiceStubSettings.java
@@ -70,6 +70,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/CatalogItemPathName.java b/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/CatalogItemPathName.java
index a35d51c236a4..3679462762be 100644
--- a/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/CatalogItemPathName.java
+++ b/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/CatalogItemPathName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CatalogItemPathName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_CATALOG_ITEM_PATH =
diff --git a/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/CatalogName.java b/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/CatalogName.java
index b8162a2e2469..905099fd3b9d 100644
--- a/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/CatalogName.java
+++ b/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/CatalogName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CatalogName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG =
diff --git a/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/EventStoreName.java b/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/EventStoreName.java
index 61f7faae9eea..c88f3fed1997 100644
--- a/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/EventStoreName.java
+++ b/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/EventStoreName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EventStoreName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_EVENT_STORE =
diff --git a/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/PlacementName.java b/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/PlacementName.java
index dc0bbd8d3eda..40573d30534b 100644
--- a/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/PlacementName.java
+++ b/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/PlacementName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PlacementName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_EVENT_STORE_PLACEMENT =
diff --git a/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionApiKeyRegistrationName.java b/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionApiKeyRegistrationName.java
index 0c7b08b2c7ce..b78ed41f6c88 100644
--- a/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionApiKeyRegistrationName.java
+++ b/java-recommendations-ai/proto-google-cloud-recommendations-ai-v1beta1/src/main/java/com/google/cloud/recommendationengine/v1beta1/PredictionApiKeyRegistrationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PredictionApiKeyRegistrationName implements ResourceName {
   private static final PathTemplate
diff --git a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/RecommenderClient.java b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/RecommenderClient.java
index 659b4ad9ee9d..1fae555fe11b 100644
--- a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/RecommenderClient.java
+++ b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/RecommenderClient.java
@@ -33,6 +33,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -375,6 +376,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RecommenderClient implements BackgroundResource {
   private final RecommenderSettings settings;
diff --git a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/RecommenderSettings.java b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/RecommenderSettings.java
index f0765096e8f5..fabe4bcc6840 100644
--- a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/RecommenderSettings.java
+++ b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/RecommenderSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RecommenderSettings extends ClientSettings<RecommenderSettings> {
 
diff --git a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/GrpcRecommenderCallableFactory.java b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/GrpcRecommenderCallableFactory.java
index 27bb1510899a..9e8f25c93935 100644
--- a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/GrpcRecommenderCallableFactory.java
+++ b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/GrpcRecommenderCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRecommenderCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/GrpcRecommenderStub.java b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/GrpcRecommenderStub.java
index a42c8b0e052d..b3b207d883b9 100644
--- a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/GrpcRecommenderStub.java
+++ b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/GrpcRecommenderStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRecommenderStub extends RecommenderStub {
   private static final MethodDescriptor<ListInsightsRequest, ListInsightsResponse>
diff --git a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/HttpJsonRecommenderCallableFactory.java b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/HttpJsonRecommenderCallableFactory.java
index ba5719821c35..6cf220666c67 100644
--- a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/HttpJsonRecommenderCallableFactory.java
+++ b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/HttpJsonRecommenderCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRecommenderCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/HttpJsonRecommenderStub.java b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/HttpJsonRecommenderStub.java
index 83039871f308..3e66778b0290 100644
--- a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/HttpJsonRecommenderStub.java
+++ b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/HttpJsonRecommenderStub.java
@@ -58,6 +58,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRecommenderStub extends RecommenderStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/RecommenderStub.java b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/RecommenderStub.java
index 51042a1d0adf..fe73c204dca7 100644
--- a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/RecommenderStub.java
+++ b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/RecommenderStub.java
@@ -41,6 +41,7 @@
 import com.google.cloud.recommender.v1.UpdateInsightTypeConfigRequest;
 import com.google.cloud.recommender.v1.UpdateRecommenderConfigRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RecommenderStub implements BackgroundResource {
 
diff --git a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/RecommenderStubSettings.java b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/RecommenderStubSettings.java
index 291886f44c8d..1162cb5ae81d 100644
--- a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/RecommenderStubSettings.java
+++ b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1/stub/RecommenderStubSettings.java
@@ -73,6 +73,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RecommenderStubSettings extends StubSettings<RecommenderStubSettings> {
diff --git a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/RecommenderClient.java b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/RecommenderClient.java
index 3031e4bb9369..89c710fb349c 100644
--- a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/RecommenderClient.java
+++ b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/RecommenderClient.java
@@ -34,6 +34,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -388,6 +389,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class RecommenderClient implements BackgroundResource {
diff --git a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/RecommenderSettings.java b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/RecommenderSettings.java
index 932c9e6e8ce9..4f536879bdc5 100644
--- a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/RecommenderSettings.java
+++ b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/RecommenderSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class RecommenderSettings extends ClientSettings<RecommenderSettings> {
diff --git a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/GrpcRecommenderCallableFactory.java b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/GrpcRecommenderCallableFactory.java
index 762e468d55c3..b5ee63620b2f 100644
--- a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/GrpcRecommenderCallableFactory.java
+++ b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/GrpcRecommenderCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcRecommenderCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/GrpcRecommenderStub.java b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/GrpcRecommenderStub.java
index 217e803a3b2b..5c76f8d1c450 100644
--- a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/GrpcRecommenderStub.java
+++ b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/GrpcRecommenderStub.java
@@ -57,6 +57,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcRecommenderStub extends RecommenderStub {
diff --git a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/HttpJsonRecommenderCallableFactory.java b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/HttpJsonRecommenderCallableFactory.java
index dd592089fca3..206add593b1f 100644
--- a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/HttpJsonRecommenderCallableFactory.java
+++ b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/HttpJsonRecommenderCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonRecommenderCallableFactory
diff --git a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/HttpJsonRecommenderStub.java b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/HttpJsonRecommenderStub.java
index 0b482691488a..c960a5b1b073 100644
--- a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/HttpJsonRecommenderStub.java
+++ b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/HttpJsonRecommenderStub.java
@@ -64,6 +64,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonRecommenderStub extends RecommenderStub {
diff --git a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/RecommenderStub.java b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/RecommenderStub.java
index ceca1be6fdcf..979b68224c07 100644
--- a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/RecommenderStub.java
+++ b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/RecommenderStub.java
@@ -47,6 +47,7 @@
 import com.google.cloud.recommender.v1beta1.UpdateInsightTypeConfigRequest;
 import com.google.cloud.recommender.v1beta1.UpdateRecommenderConfigRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class RecommenderStub implements BackgroundResource {
diff --git a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/RecommenderStubSettings.java b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/RecommenderStubSettings.java
index dc038e3b7e17..8c59f66d0cd4 100644
--- a/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/RecommenderStubSettings.java
+++ b/java-recommender/google-cloud-recommender/src/main/java/com/google/cloud/recommender/v1beta1/stub/RecommenderStubSettings.java
@@ -80,6 +80,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/InsightName.java b/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/InsightName.java
index 42743a929598..43a69dae556a 100644
--- a/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/InsightName.java
+++ b/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/InsightName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InsightName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSIGHT_TYPE_INSIGHT =
diff --git a/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/InsightTypeConfigName.java b/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/InsightTypeConfigName.java
index 70f8f4c22f50..0a7e45d729e6 100644
--- a/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/InsightTypeConfigName.java
+++ b/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/InsightTypeConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InsightTypeConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSIGHT_TYPE =
diff --git a/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/InsightTypeName.java b/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/InsightTypeName.java
index 67a5099a6338..d4004308fd72 100644
--- a/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/InsightTypeName.java
+++ b/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/InsightTypeName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InsightTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSIGHT_TYPE =
diff --git a/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/RecommendationName.java b/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/RecommendationName.java
index dd7e033aaa7d..cc205987ba6a 100644
--- a/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/RecommendationName.java
+++ b/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/RecommendationName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RecommendationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RECOMMENDER_RECOMMENDATION =
diff --git a/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/RecommenderConfigName.java b/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/RecommenderConfigName.java
index d37c30b4173b..ef8f4826b792 100644
--- a/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/RecommenderConfigName.java
+++ b/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/RecommenderConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RecommenderConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RECOMMENDER =
diff --git a/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/RecommenderName.java b/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/RecommenderName.java
index f595452baeda..8bebb1e1c52e 100644
--- a/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/RecommenderName.java
+++ b/java-recommender/proto-google-cloud-recommender-v1/src/main/java/com/google/cloud/recommender/v1/RecommenderName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RecommenderName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RECOMMENDER =
diff --git a/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/InsightName.java b/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/InsightName.java
index 1766fbc21bfc..eb4112b5d7b3 100644
--- a/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/InsightName.java
+++ b/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/InsightName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InsightName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSIGHT_TYPE_INSIGHT =
diff --git a/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/InsightTypeConfigName.java b/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/InsightTypeConfigName.java
index 22adaa5f8b00..11572e4d615f 100644
--- a/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/InsightTypeConfigName.java
+++ b/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/InsightTypeConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InsightTypeConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSIGHT_TYPE =
diff --git a/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/InsightTypeName.java b/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/InsightTypeName.java
index cca923ba6005..897004562eb2 100644
--- a/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/InsightTypeName.java
+++ b/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/InsightTypeName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InsightTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSIGHT_TYPE =
diff --git a/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/RecommendationName.java b/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/RecommendationName.java
index f137d65dbbc7..1a8561ea6b80 100644
--- a/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/RecommendationName.java
+++ b/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/RecommendationName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RecommendationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RECOMMENDER_RECOMMENDATION =
diff --git a/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/RecommenderConfigName.java b/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/RecommenderConfigName.java
index 365e5f4d081d..cdda68c97e19 100644
--- a/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/RecommenderConfigName.java
+++ b/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/RecommenderConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RecommenderConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RECOMMENDER =
diff --git a/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/RecommenderName.java b/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/RecommenderName.java
index e99ab2b444c8..b9cb1b5a8f92 100644
--- a/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/RecommenderName.java
+++ b/java-recommender/proto-google-cloud-recommender-v1beta1/src/main/java/com/google/cloud/recommender/v1beta1/RecommenderName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RecommenderName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RECOMMENDER =
diff --git a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/CloudRedisClusterClient.java b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/CloudRedisClusterClient.java
index 50e81b40efb1..0b58119691e5 100644
--- a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/CloudRedisClusterClient.java
+++ b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/CloudRedisClusterClient.java
@@ -44,6 +44,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -478,6 +479,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudRedisClusterClient implements BackgroundResource {
   private final CloudRedisClusterSettings settings;
diff --git a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/CloudRedisClusterSettings.java b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/CloudRedisClusterSettings.java
index d734fc94afeb..a51e08462b2a 100644
--- a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/CloudRedisClusterSettings.java
+++ b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/CloudRedisClusterSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudRedisClusterSettings extends ClientSettings<CloudRedisClusterSettings> {
 
diff --git a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/CloudRedisClusterStub.java b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/CloudRedisClusterStub.java
index 725348724997..86725b83fea1 100644
--- a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/CloudRedisClusterStub.java
+++ b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/CloudRedisClusterStub.java
@@ -56,6 +56,7 @@
 import com.google.protobuf.Any;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CloudRedisClusterStub implements BackgroundResource {
 
diff --git a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/CloudRedisClusterStubSettings.java b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/CloudRedisClusterStubSettings.java
index c29a464e4b98..9ac2d7af7dd7 100644
--- a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/CloudRedisClusterStubSettings.java
+++ b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/CloudRedisClusterStubSettings.java
@@ -90,6 +90,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -168,6 +169,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CloudRedisClusterStubSettings extends StubSettings<CloudRedisClusterStubSettings> {
diff --git a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/GrpcCloudRedisClusterCallableFactory.java b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/GrpcCloudRedisClusterCallableFactory.java
index 87446b773179..18d4b647caa2 100644
--- a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/GrpcCloudRedisClusterCallableFactory.java
+++ b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/GrpcCloudRedisClusterCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudRedisClusterCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/GrpcCloudRedisClusterStub.java b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/GrpcCloudRedisClusterStub.java
index 44581316a5e6..d7b8fa8dc16a 100644
--- a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/GrpcCloudRedisClusterStub.java
+++ b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/GrpcCloudRedisClusterStub.java
@@ -65,6 +65,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudRedisClusterStub extends CloudRedisClusterStub {
   private static final MethodDescriptor<ListClustersRequest, ListClustersResponse>
diff --git a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/HttpJsonCloudRedisClusterCallableFactory.java b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/HttpJsonCloudRedisClusterCallableFactory.java
index e83e8a5d46c8..cae21736ab38 100644
--- a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/HttpJsonCloudRedisClusterCallableFactory.java
+++ b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/HttpJsonCloudRedisClusterCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudRedisClusterCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/HttpJsonCloudRedisClusterStub.java b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/HttpJsonCloudRedisClusterStub.java
index a8f7adaba055..eba0d4c7fb4f 100644
--- a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/HttpJsonCloudRedisClusterStub.java
+++ b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1/stub/HttpJsonCloudRedisClusterStub.java
@@ -76,6 +76,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudRedisClusterStub extends CloudRedisClusterStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/CloudRedisClusterClient.java b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/CloudRedisClusterClient.java
index 03f3e13e2dff..a56cc785f600 100644
--- a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/CloudRedisClusterClient.java
+++ b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/CloudRedisClusterClient.java
@@ -44,6 +44,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -478,6 +479,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudRedisClusterClient implements BackgroundResource {
diff --git a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/CloudRedisClusterSettings.java b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/CloudRedisClusterSettings.java
index 71b479bb94ea..80123746679c 100644
--- a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/CloudRedisClusterSettings.java
+++ b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/CloudRedisClusterSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudRedisClusterSettings extends ClientSettings<CloudRedisClusterSettings> {
diff --git a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/CloudRedisClusterStub.java b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/CloudRedisClusterStub.java
index a689e25afdac..14e09985a740 100644
--- a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/CloudRedisClusterStub.java
+++ b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/CloudRedisClusterStub.java
@@ -57,6 +57,7 @@
 import com.google.protobuf.Any;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CloudRedisClusterStub implements BackgroundResource {
diff --git a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/CloudRedisClusterStubSettings.java b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/CloudRedisClusterStubSettings.java
index dc9e23f4bdc3..80108ba35abb 100644
--- a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/CloudRedisClusterStubSettings.java
+++ b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/CloudRedisClusterStubSettings.java
@@ -90,6 +90,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -168,6 +169,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/GrpcCloudRedisClusterCallableFactory.java b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/GrpcCloudRedisClusterCallableFactory.java
index 871211775364..b263fa985514 100644
--- a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/GrpcCloudRedisClusterCallableFactory.java
+++ b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/GrpcCloudRedisClusterCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudRedisClusterCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/GrpcCloudRedisClusterStub.java b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/GrpcCloudRedisClusterStub.java
index a502f1670fec..ea63735a78e4 100644
--- a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/GrpcCloudRedisClusterStub.java
+++ b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/GrpcCloudRedisClusterStub.java
@@ -66,6 +66,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudRedisClusterStub extends CloudRedisClusterStub {
diff --git a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/HttpJsonCloudRedisClusterCallableFactory.java b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/HttpJsonCloudRedisClusterCallableFactory.java
index 4206c4729376..cf8b93157638 100644
--- a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/HttpJsonCloudRedisClusterCallableFactory.java
+++ b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/HttpJsonCloudRedisClusterCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudRedisClusterCallableFactory
diff --git a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/HttpJsonCloudRedisClusterStub.java b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/HttpJsonCloudRedisClusterStub.java
index 351c016a98c9..7b480be1d9bb 100644
--- a/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/HttpJsonCloudRedisClusterStub.java
+++ b/java-redis-cluster/google-cloud-redis-cluster/src/main/java/com/google/cloud/redis/cluster/v1beta1/stub/HttpJsonCloudRedisClusterStub.java
@@ -77,6 +77,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudRedisClusterStub extends CloudRedisClusterStub {
diff --git a/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/BackupCollectionName.java b/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/BackupCollectionName.java
index 5f9a5fffec55..09a05ad3c9f5 100644
--- a/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/BackupCollectionName.java
+++ b/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/BackupCollectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupCollectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP_COLLECTION =
diff --git a/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/BackupName.java b/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/BackupName.java
index dc6d19fe383d..8652ffd8d247 100644
--- a/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/BackupName.java
+++ b/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/BackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP_COLLECTION_BACKUP =
diff --git a/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/CertificateAuthorityName.java b/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/CertificateAuthorityName.java
index e6773e57f29a..0eda345867a6 100644
--- a/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/CertificateAuthorityName.java
+++ b/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/CertificateAuthorityName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CertificateAuthorityName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER =
diff --git a/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/ClusterName.java b/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/ClusterName.java
index 443c87c67aa2..0c22ad5ca70d 100644
--- a/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/ClusterName.java
+++ b/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/ClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER =
diff --git a/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/LocationName.java b/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/LocationName.java
index 4747c3552ac0..65d31d2d7b6b 100644
--- a/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/LocationName.java
+++ b/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/SharedRegionalCertificateAuthorityName.java b/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/SharedRegionalCertificateAuthorityName.java
index f298986cc59c..1452dae78ded 100644
--- a/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/SharedRegionalCertificateAuthorityName.java
+++ b/java-redis-cluster/proto-google-cloud-redis-cluster-v1/src/main/java/com/google/cloud/redis/cluster/v1/SharedRegionalCertificateAuthorityName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SharedRegionalCertificateAuthorityName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/BackupCollectionName.java b/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/BackupCollectionName.java
index a23063ddc3c0..a54f6c96edae 100644
--- a/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/BackupCollectionName.java
+++ b/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/BackupCollectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupCollectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP_COLLECTION =
diff --git a/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/BackupName.java b/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/BackupName.java
index bc4945a64295..46aa916440c1 100644
--- a/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/BackupName.java
+++ b/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/BackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP_COLLECTION_BACKUP =
diff --git a/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/CertificateAuthorityName.java b/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/CertificateAuthorityName.java
index af3dbf814883..df67310805d8 100644
--- a/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/CertificateAuthorityName.java
+++ b/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/CertificateAuthorityName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CertificateAuthorityName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER =
diff --git a/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/ClusterName.java b/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/ClusterName.java
index b5b16878a98a..9479b715638c 100644
--- a/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/ClusterName.java
+++ b/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/ClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER =
diff --git a/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/LocationName.java b/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/LocationName.java
index c2d91e483c47..dfe1c22dd92b 100644
--- a/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/LocationName.java
+++ b/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/SharedRegionalCertificateAuthorityName.java b/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/SharedRegionalCertificateAuthorityName.java
index 899c3ccfffa5..c228791a8963 100644
--- a/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/SharedRegionalCertificateAuthorityName.java
+++ b/java-redis-cluster/proto-google-cloud-redis-cluster-v1beta1/src/main/java/com/google/cloud/redis/cluster/v1beta1/SharedRegionalCertificateAuthorityName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SharedRegionalCertificateAuthorityName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/CloudRedisClient.java b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/CloudRedisClient.java
index 60cfa01a6927..cad11036eb78 100644
--- a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/CloudRedisClient.java
+++ b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/CloudRedisClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -403,6 +404,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudRedisClient implements BackgroundResource {
   private final CloudRedisSettings settings;
diff --git a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/CloudRedisSettings.java b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/CloudRedisSettings.java
index 3f65521e6d24..f32b07398996 100644
--- a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/CloudRedisSettings.java
+++ b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/CloudRedisSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudRedisSettings extends ClientSettings<CloudRedisSettings> {
 
diff --git a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/CloudRedisStub.java b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/CloudRedisStub.java
index deee00a14803..30cf02a5c9ba 100644
--- a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/CloudRedisStub.java
+++ b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/CloudRedisStub.java
@@ -45,6 +45,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CloudRedisStub implements BackgroundResource {
 
diff --git a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/CloudRedisStubSettings.java b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/CloudRedisStubSettings.java
index ad46893347e0..add9734c42c7 100644
--- a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/CloudRedisStubSettings.java
+++ b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/CloudRedisStubSettings.java
@@ -79,6 +79,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CloudRedisStubSettings extends StubSettings<CloudRedisStubSettings> {
diff --git a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/GrpcCloudRedisCallableFactory.java b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/GrpcCloudRedisCallableFactory.java
index f0bf1e13cb2a..6fb37be95ce4 100644
--- a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/GrpcCloudRedisCallableFactory.java
+++ b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/GrpcCloudRedisCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudRedisCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/GrpcCloudRedisStub.java b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/GrpcCloudRedisStub.java
index 5ddb50921102..b3f8c7c73b93 100644
--- a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/GrpcCloudRedisStub.java
+++ b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/GrpcCloudRedisStub.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudRedisStub extends CloudRedisStub {
   private static final MethodDescriptor<ListInstancesRequest, ListInstancesResponse>
diff --git a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/HttpJsonCloudRedisCallableFactory.java b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/HttpJsonCloudRedisCallableFactory.java
index 35383fb3fc99..28fd487a157e 100644
--- a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/HttpJsonCloudRedisCallableFactory.java
+++ b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/HttpJsonCloudRedisCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudRedisCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/HttpJsonCloudRedisStub.java b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/HttpJsonCloudRedisStub.java
index 1da68988151e..41dd01bcb271 100644
--- a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/HttpJsonCloudRedisStub.java
+++ b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/stub/HttpJsonCloudRedisStub.java
@@ -65,6 +65,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudRedisStub extends CloudRedisStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/CloudRedisClient.java b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/CloudRedisClient.java
index 61a4d254232d..abbea298e8e9 100644
--- a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/CloudRedisClient.java
+++ b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/CloudRedisClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -371,6 +372,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudRedisClient implements BackgroundResource {
diff --git a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/CloudRedisSettings.java b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/CloudRedisSettings.java
index 02abb8a32133..6e23b8385164 100644
--- a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/CloudRedisSettings.java
+++ b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/CloudRedisSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudRedisSettings extends ClientSettings<CloudRedisSettings> {
diff --git a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/CloudRedisStub.java b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/CloudRedisStub.java
index ee3b618be4b9..e68811a95d94 100644
--- a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/CloudRedisStub.java
+++ b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/CloudRedisStub.java
@@ -41,6 +41,7 @@
 import com.google.protobuf.Any;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CloudRedisStub implements BackgroundResource {
diff --git a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/CloudRedisStubSettings.java b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/CloudRedisStubSettings.java
index 9bfa0572e609..edb7c82b6889 100644
--- a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/CloudRedisStubSettings.java
+++ b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/CloudRedisStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -149,6 +150,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/GrpcCloudRedisCallableFactory.java b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/GrpcCloudRedisCallableFactory.java
index 73f0d9dc6d65..c2d3ef3c3361 100644
--- a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/GrpcCloudRedisCallableFactory.java
+++ b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/GrpcCloudRedisCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudRedisCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/GrpcCloudRedisStub.java b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/GrpcCloudRedisStub.java
index 18bab12ba28b..8d217e2d6017 100644
--- a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/GrpcCloudRedisStub.java
+++ b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/GrpcCloudRedisStub.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudRedisStub extends CloudRedisStub {
diff --git a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/HttpJsonCloudRedisCallableFactory.java b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/HttpJsonCloudRedisCallableFactory.java
index dd0148220481..9b5d2e3c10bd 100644
--- a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/HttpJsonCloudRedisCallableFactory.java
+++ b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/HttpJsonCloudRedisCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudRedisCallableFactory
diff --git a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/HttpJsonCloudRedisStub.java b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/HttpJsonCloudRedisStub.java
index 3644e4eaa070..40ea423b43b8 100644
--- a/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/HttpJsonCloudRedisStub.java
+++ b/java-redis/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/stub/HttpJsonCloudRedisStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudRedisStub extends CloudRedisStub {
diff --git a/java-redis/proto-google-cloud-redis-v1/src/main/java/com/google/cloud/redis/v1/InstanceName.java b/java-redis/proto-google-cloud-redis-v1/src/main/java/com/google/cloud/redis/v1/InstanceName.java
index e07735997351..b5981e2a2775 100644
--- a/java-redis/proto-google-cloud-redis-v1/src/main/java/com/google/cloud/redis/v1/InstanceName.java
+++ b/java-redis/proto-google-cloud-redis-v1/src/main/java/com/google/cloud/redis/v1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-redis/proto-google-cloud-redis-v1/src/main/java/com/google/cloud/redis/v1/LocationName.java b/java-redis/proto-google-cloud-redis-v1/src/main/java/com/google/cloud/redis/v1/LocationName.java
index 4fcefd09ef98..e065880feabf 100644
--- a/java-redis/proto-google-cloud-redis-v1/src/main/java/com/google/cloud/redis/v1/LocationName.java
+++ b/java-redis/proto-google-cloud-redis-v1/src/main/java/com/google/cloud/redis/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-redis/proto-google-cloud-redis-v1beta1/src/main/java/com/google/cloud/redis/v1beta1/InstanceName.java b/java-redis/proto-google-cloud-redis-v1beta1/src/main/java/com/google/cloud/redis/v1beta1/InstanceName.java
index 58994ef5819b..603b9f8ca7ef 100644
--- a/java-redis/proto-google-cloud-redis-v1beta1/src/main/java/com/google/cloud/redis/v1beta1/InstanceName.java
+++ b/java-redis/proto-google-cloud-redis-v1beta1/src/main/java/com/google/cloud/redis/v1beta1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-redis/proto-google-cloud-redis-v1beta1/src/main/java/com/google/cloud/redis/v1beta1/LocationName.java b/java-redis/proto-google-cloud-redis-v1beta1/src/main/java/com/google/cloud/redis/v1beta1/LocationName.java
index 8ea7eca806dc..6b5c2f14a01f 100644
--- a/java-redis/proto-google-cloud-redis-v1beta1/src/main/java/com/google/cloud/redis/v1beta1/LocationName.java
+++ b/java-redis/proto-google-cloud-redis-v1beta1/src/main/java/com/google/cloud/redis/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/FoldersClient.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/FoldersClient.java
index ca6986b24dff..dc2ee99a63bc 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/FoldersClient.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/FoldersClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -350,6 +351,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FoldersClient implements BackgroundResource {
   private final FoldersSettings settings;
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/FoldersSettings.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/FoldersSettings.java
index b7418b55a632..c7d3c782ff85 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/FoldersSettings.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/FoldersSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FoldersSettings extends ClientSettings<FoldersSettings> {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/OrganizationsClient.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/OrganizationsClient.java
index 16651d52d0f8..da163821a948 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/OrganizationsClient.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/OrganizationsClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -221,6 +222,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationsClient implements BackgroundResource {
   private final OrganizationsSettings settings;
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/OrganizationsSettings.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/OrganizationsSettings.java
index f504b504793e..101be9ca32bb 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/OrganizationsSettings.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/OrganizationsSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationsSettings extends ClientSettings<OrganizationsSettings> {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/ProjectsClient.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/ProjectsClient.java
index ba3b7974eb36..748da8b70f17 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/ProjectsClient.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/ProjectsClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -365,6 +366,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectsClient implements BackgroundResource {
   private final ProjectsSettings settings;
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/ProjectsSettings.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/ProjectsSettings.java
index 6323124cdfa4..f24be7789651 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/ProjectsSettings.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/ProjectsSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectsSettings extends ClientSettings<ProjectsSettings> {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagBindingsClient.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagBindingsClient.java
index 68e8a52f89ed..0ae68bfc246c 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagBindingsClient.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagBindingsClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -204,6 +205,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagBindingsClient implements BackgroundResource {
   private final TagBindingsSettings settings;
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagBindingsSettings.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagBindingsSettings.java
index ce54ef1386dc..6ba6d0450c9d 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagBindingsSettings.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagBindingsSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagBindingsSettings extends ClientSettings<TagBindingsSettings> {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagHoldsClient.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagHoldsClient.java
index 23fdb7c6b110..e68243f9df6a 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagHoldsClient.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagHoldsClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -185,6 +186,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagHoldsClient implements BackgroundResource {
   private final TagHoldsSettings settings;
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagHoldsSettings.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagHoldsSettings.java
index 349aa1ff84b6..9243320d78aa 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagHoldsSettings.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagHoldsSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagHoldsSettings extends ClientSettings<TagHoldsSettings> {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagKeysClient.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagKeysClient.java
index 199433756ee2..7330ce1c1289 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagKeysClient.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagKeysClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -300,6 +301,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagKeysClient implements BackgroundResource {
   private final TagKeysSettings settings;
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagKeysSettings.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagKeysSettings.java
index 02bd04ca47a0..6820c8ad3b35 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagKeysSettings.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagKeysSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagKeysSettings extends ClientSettings<TagKeysSettings> {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagValuesClient.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagValuesClient.java
index 577ed4226333..b2b196dc2ccc 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagValuesClient.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagValuesClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -301,6 +302,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagValuesClient implements BackgroundResource {
   private final TagValuesSettings settings;
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagValuesSettings.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagValuesSettings.java
index d641c4b2a322..11e7e69789e4 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagValuesSettings.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/TagValuesSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagValuesSettings extends ClientSettings<TagValuesSettings> {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/FoldersStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/FoldersStub.java
index 43269a711e1d..aff7d52c5355 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/FoldersStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/FoldersStub.java
@@ -46,6 +46,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FoldersStub implements BackgroundResource {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/FoldersStubSettings.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/FoldersStubSettings.java
index 9950817c7e8b..92ae275a62d5 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/FoldersStubSettings.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/FoldersStubSettings.java
@@ -80,6 +80,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FoldersStubSettings extends StubSettings<FoldersStubSettings> {
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcFoldersCallableFactory.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcFoldersCallableFactory.java
index 95fda3debd12..10935cefb6ff 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcFoldersCallableFactory.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcFoldersCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFoldersCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcFoldersStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcFoldersStub.java
index 7c185121567b..c921d5a3cfb1 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcFoldersStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcFoldersStub.java
@@ -55,6 +55,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFoldersStub extends FoldersStub {
   private static final MethodDescriptor<GetFolderRequest, Folder> getFolderMethodDescriptor =
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcOrganizationsCallableFactory.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcOrganizationsCallableFactory.java
index 23d263a74b8e..4bc41a209441 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcOrganizationsCallableFactory.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcOrganizationsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOrganizationsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcOrganizationsStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcOrganizationsStub.java
index e31b4d0664ca..5aac4daf5058 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcOrganizationsStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcOrganizationsStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOrganizationsStub extends OrganizationsStub {
   private static final MethodDescriptor<GetOrganizationRequest, Organization>
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcProjectsCallableFactory.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcProjectsCallableFactory.java
index 4521fd6a4b42..92a2ff762c7a 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcProjectsCallableFactory.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcProjectsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcProjectsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcProjectsStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcProjectsStub.java
index cfae02077e35..2d175ff8ce0a 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcProjectsStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcProjectsStub.java
@@ -55,6 +55,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcProjectsStub extends ProjectsStub {
   private static final MethodDescriptor<GetProjectRequest, Project> getProjectMethodDescriptor =
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagBindingsCallableFactory.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagBindingsCallableFactory.java
index c7962b0c82df..a279bd9a325e 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagBindingsCallableFactory.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagBindingsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTagBindingsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagBindingsStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagBindingsStub.java
index 7117380a524d..7e2d0ed07a04 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagBindingsStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagBindingsStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTagBindingsStub extends TagBindingsStub {
   private static final MethodDescriptor<ListTagBindingsRequest, ListTagBindingsResponse>
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagHoldsCallableFactory.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagHoldsCallableFactory.java
index d9f1646b9dc6..215eb360fe8a 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagHoldsCallableFactory.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagHoldsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTagHoldsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagHoldsStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagHoldsStub.java
index 322043942f0d..6cbbd392bf54 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagHoldsStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagHoldsStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTagHoldsStub extends TagHoldsStub {
   private static final MethodDescriptor<CreateTagHoldRequest, Operation>
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagKeysCallableFactory.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagKeysCallableFactory.java
index 46e005073b9c..3c3ecdcc6979 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagKeysCallableFactory.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagKeysCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTagKeysCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagKeysStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagKeysStub.java
index 5421e1333d76..a7638865e937 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagKeysStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagKeysStub.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTagKeysStub extends TagKeysStub {
   private static final MethodDescriptor<ListTagKeysRequest, ListTagKeysResponse>
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagValuesCallableFactory.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagValuesCallableFactory.java
index c06ba47a508d..a5594b72913c 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagValuesCallableFactory.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagValuesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTagValuesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagValuesStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagValuesStub.java
index 119d7e9b9454..ee2a677ab4ff 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagValuesStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagValuesStub.java
@@ -49,6 +49,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTagValuesStub extends TagValuesStub {
   private static final MethodDescriptor<ListTagValuesRequest, ListTagValuesResponse>
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonFoldersCallableFactory.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonFoldersCallableFactory.java
index 901f00d6fecf..3b72decdd4ff 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonFoldersCallableFactory.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonFoldersCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFoldersCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonFoldersStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonFoldersStub.java
index 17d5543e6ec8..8e761bc0d955 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonFoldersStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonFoldersStub.java
@@ -66,6 +66,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFoldersStub extends FoldersStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonOrganizationsCallableFactory.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonOrganizationsCallableFactory.java
index c3a14560b339..2d77796d756d 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonOrganizationsCallableFactory.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonOrganizationsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOrganizationsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonOrganizationsStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonOrganizationsStub.java
index c3030b9271ba..493df086a3db 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonOrganizationsStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonOrganizationsStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOrganizationsStub extends OrganizationsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonProjectsCallableFactory.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonProjectsCallableFactory.java
index 0688b8ad7d92..b6e86e642c55 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonProjectsCallableFactory.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonProjectsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProjectsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonProjectsStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonProjectsStub.java
index 47f630b5e805..d0ee77f36541 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonProjectsStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonProjectsStub.java
@@ -66,6 +66,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProjectsStub extends ProjectsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagBindingsCallableFactory.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagBindingsCallableFactory.java
index 821637aa65e0..9dc94864e48f 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagBindingsCallableFactory.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagBindingsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTagBindingsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagBindingsStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagBindingsStub.java
index f51fd16cd037..65deb235b584 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagBindingsStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagBindingsStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTagBindingsStub extends TagBindingsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagHoldsCallableFactory.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagHoldsCallableFactory.java
index 63f1a7d69f6c..4b3e0838f1d5 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagHoldsCallableFactory.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagHoldsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTagHoldsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagHoldsStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagHoldsStub.java
index ffa10d5c2ae8..dd7e2ff24701 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagHoldsStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagHoldsStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTagHoldsStub extends TagHoldsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagKeysCallableFactory.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagKeysCallableFactory.java
index 1e5a62f0ccce..8533104f1a3b 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagKeysCallableFactory.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagKeysCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTagKeysCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagKeysStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagKeysStub.java
index 5d49e9a907db..2e9cf6946197 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagKeysStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagKeysStub.java
@@ -60,6 +60,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTagKeysStub extends TagKeysStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagValuesCallableFactory.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagValuesCallableFactory.java
index ea717c576c12..767e71770f20 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagValuesCallableFactory.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagValuesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTagValuesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagValuesStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagValuesStub.java
index ce62cf8588a4..89e734956273 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagValuesStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/HttpJsonTagValuesStub.java
@@ -60,6 +60,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTagValuesStub extends TagValuesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/OrganizationsStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/OrganizationsStub.java
index 57a5fd4d4c25..8c0f00e7ac44 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/OrganizationsStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/OrganizationsStub.java
@@ -30,6 +30,7 @@
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class OrganizationsStub implements BackgroundResource {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/OrganizationsStubSettings.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/OrganizationsStubSettings.java
index cd4093c93764..28fadad2d855 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/OrganizationsStubSettings.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/OrganizationsStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class OrganizationsStubSettings extends StubSettings<OrganizationsStubSettings> {
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/ProjectsStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/ProjectsStub.java
index b40728f0a047..44689dddb61f 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/ProjectsStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/ProjectsStub.java
@@ -46,6 +46,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ProjectsStub implements BackgroundResource {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/ProjectsStubSettings.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/ProjectsStubSettings.java
index 68dbefde622b..e89cc595162b 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/ProjectsStubSettings.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/ProjectsStubSettings.java
@@ -80,6 +80,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ProjectsStubSettings extends StubSettings<ProjectsStubSettings> {
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagBindingsStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagBindingsStub.java
index ec6a446f4df6..a14574771d2d 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagBindingsStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagBindingsStub.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TagBindingsStub implements BackgroundResource {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagBindingsStubSettings.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagBindingsStubSettings.java
index c4ab8d7ce53b..b87e2654687d 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagBindingsStubSettings.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagBindingsStubSettings.java
@@ -70,6 +70,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TagBindingsStubSettings extends StubSettings<TagBindingsStubSettings> {
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagHoldsStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagHoldsStub.java
index f596ea9f1af5..59e01ea60243 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagHoldsStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagHoldsStub.java
@@ -32,6 +32,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TagHoldsStub implements BackgroundResource {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagHoldsStubSettings.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagHoldsStubSettings.java
index 3ff4ada95ba5..3d70d12a2ce7 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagHoldsStubSettings.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagHoldsStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -142,6 +143,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TagHoldsStubSettings extends StubSettings<TagHoldsStubSettings> {
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagKeysStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagKeysStub.java
index 46148e30eae6..df79ed0f1445 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagKeysStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagKeysStub.java
@@ -40,6 +40,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TagKeysStub implements BackgroundResource {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagKeysStubSettings.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagKeysStubSettings.java
index 0a8efcaea3f1..c0cb3c8dcf2c 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagKeysStubSettings.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagKeysStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TagKeysStubSettings extends StubSettings<TagKeysStubSettings> {
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagValuesStub.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagValuesStub.java
index b749b9c69817..0f7b375a3187 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagValuesStub.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagValuesStub.java
@@ -40,6 +40,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TagValuesStub implements BackgroundResource {
 
diff --git a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagValuesStubSettings.java b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagValuesStubSettings.java
index 23f602113c13..83592edd6a09 100644
--- a/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagValuesStubSettings.java
+++ b/java-resourcemanager/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/TagValuesStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TagValuesStubSettings extends StubSettings<TagValuesStubSettings> {
diff --git a/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/FolderName.java b/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/FolderName.java
index b29384ee9872..a2eacfd57007 100644
--- a/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/FolderName.java
+++ b/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/FolderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderName implements ResourceName {
   private static final PathTemplate FOLDER =
diff --git a/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/OrganizationName.java b/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/OrganizationName.java
index c97dc851be42..551bb3b5b74e 100644
--- a/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/OrganizationName.java
+++ b/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/ProjectName.java b/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/ProjectName.java
index c23868f7ea7d..11255a6de535 100644
--- a/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/ProjectName.java
+++ b/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/TagBindingName.java b/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/TagBindingName.java
index 85788e994ec1..59716322f46a 100644
--- a/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/TagBindingName.java
+++ b/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/TagBindingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagBindingName implements ResourceName {
   private static final PathTemplate TAG_BINDING =
diff --git a/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/TagHoldName.java b/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/TagHoldName.java
index a692ab6eca80..2e006d951996 100644
--- a/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/TagHoldName.java
+++ b/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/TagHoldName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagHoldName implements ResourceName {
   private static final PathTemplate TAG_VALUE_TAG_HOLD =
diff --git a/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/TagKeyName.java b/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/TagKeyName.java
index e5b8c43a7cfe..0eda884c2db6 100644
--- a/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/TagKeyName.java
+++ b/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/TagKeyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagKeyName implements ResourceName {
   private static final PathTemplate TAG_KEY =
diff --git a/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/TagValueName.java b/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/TagValueName.java
index 94e9856d005c..bb101755b5a3 100644
--- a/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/TagValueName.java
+++ b/java-resourcemanager/proto-google-cloud-resourcemanager-v3/src/main/java/com/google/cloud/resourcemanager/v3/TagValueName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TagValueName implements ResourceName {
   private static final PathTemplate TAG_VALUE =
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/AnalyticsServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/AnalyticsServiceClient.java
index 3e1e729fc5c3..2ca2c3d19471 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/AnalyticsServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/AnalyticsServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -140,6 +141,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnalyticsServiceClient implements BackgroundResource {
   private final AnalyticsServiceSettings settings;
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/AnalyticsServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/AnalyticsServiceSettings.java
index d2b5a280c2f0..6a8b704d8a38 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/AnalyticsServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/AnalyticsServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnalyticsServiceSettings extends ClientSettings<AnalyticsServiceSettings> {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/CatalogServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/CatalogServiceClient.java
index 347ac29390ef..d0000f496f45 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/CatalogServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/CatalogServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -324,6 +325,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CatalogServiceClient implements BackgroundResource {
   private final CatalogServiceSettings settings;
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/CatalogServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/CatalogServiceSettings.java
index f775814df3e1..0a4c82c939d9 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/CatalogServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/CatalogServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CatalogServiceSettings extends ClientSettings<CatalogServiceSettings> {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/CompletionServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/CompletionServiceClient.java
index ca3ad490dcc4..6d1d1dc7c4dd 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/CompletionServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/CompletionServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -164,6 +165,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompletionServiceClient implements BackgroundResource {
   private final CompletionServiceSettings settings;
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/CompletionServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/CompletionServiceSettings.java
index 32365215d649..7ea51ef3b31c 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/CompletionServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/CompletionServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompletionServiceSettings extends ClientSettings<CompletionServiceSettings> {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ControlServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ControlServiceClient.java
index 8f394999cfac..78101d3da59c 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ControlServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ControlServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -218,6 +219,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ControlServiceClient implements BackgroundResource {
   private final ControlServiceSettings settings;
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ControlServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ControlServiceSettings.java
index db7a1ed76543..1f85d26adb1a 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ControlServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ControlServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ControlServiceSettings extends ClientSettings<ControlServiceSettings> {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ConversationalSearchServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ConversationalSearchServiceClient.java
index 72cb715e6e6a..9afab1072a19 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ConversationalSearchServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ConversationalSearchServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -146,6 +147,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationalSearchServiceClient implements BackgroundResource {
   private final ConversationalSearchServiceSettings settings;
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ConversationalSearchServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ConversationalSearchServiceSettings.java
index 0843028197f8..e2c9968fd41a 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ConversationalSearchServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ConversationalSearchServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversationalSearchServiceSettings
     extends ClientSettings<ConversationalSearchServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/GenerativeQuestionServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/GenerativeQuestionServiceClient.java
index ff7b5198f1bb..ee5af1eaee4e 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/GenerativeQuestionServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/GenerativeQuestionServiceClient.java
@@ -25,6 +25,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -209,6 +210,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GenerativeQuestionServiceClient implements BackgroundResource {
   private final GenerativeQuestionServiceSettings settings;
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/GenerativeQuestionServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/GenerativeQuestionServiceSettings.java
index cdbc646506d6..4b25f5a3f1eb 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/GenerativeQuestionServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/GenerativeQuestionServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GenerativeQuestionServiceSettings
     extends ClientSettings<GenerativeQuestionServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ModelServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ModelServiceClient.java
index a8d16089f4aa..5698352c796a 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ModelServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ModelServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -287,6 +288,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelServiceClient implements BackgroundResource {
   private final ModelServiceSettings settings;
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ModelServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ModelServiceSettings.java
index 1cc983925c91..74566561a53c 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ModelServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ModelServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelServiceSettings extends ClientSettings<ModelServiceSettings> {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/PredictionServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/PredictionServiceClient.java
index b96cb2cbeb89..1a3b313632cd 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/PredictionServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/PredictionServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -136,6 +137,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PredictionServiceClient implements BackgroundResource {
   private final PredictionServiceSettings settings;
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/PredictionServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/PredictionServiceSettings.java
index b813a9df2f2f..1dbda694a982 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/PredictionServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/PredictionServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PredictionServiceSettings extends ClientSettings<PredictionServiceSettings> {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ProductServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ProductServiceClient.java
index a4b75cbbe600..c22843ea7374 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ProductServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ProductServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -377,6 +378,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductServiceClient implements BackgroundResource {
   private final ProductServiceSettings settings;
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ProductServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ProductServiceSettings.java
index 6dc907b23644..7ec4be9b743a 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ProductServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ProductServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductServiceSettings extends ClientSettings<ProductServiceSettings> {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/SearchServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/SearchServiceClient.java
index d17ef40cac10..06020ea3dfe2 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/SearchServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/SearchServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -168,6 +169,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SearchServiceClient implements BackgroundResource {
   private final SearchServiceSettings settings;
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/SearchServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/SearchServiceSettings.java
index a57b7efb2d30..447a51bc9c0a 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/SearchServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/SearchServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SearchServiceSettings extends ClientSettings<SearchServiceSettings> {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ServingConfigServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ServingConfigServiceClient.java
index 14efd45aa5a7..e6b5bab5d82a 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ServingConfigServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ServingConfigServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -262,6 +263,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServingConfigServiceClient implements BackgroundResource {
   private final ServingConfigServiceSettings settings;
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ServingConfigServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ServingConfigServiceSettings.java
index 61ac8328e235..20919df10869 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ServingConfigServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/ServingConfigServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServingConfigServiceSettings extends ClientSettings<ServingConfigServiceSettings> {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/UserEventServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/UserEventServiceClient.java
index 4428acb49f44..5affb28742d1 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/UserEventServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/UserEventServiceClient.java
@@ -29,6 +29,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -199,6 +200,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserEventServiceClient implements BackgroundResource {
   private final UserEventServiceSettings settings;
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/UserEventServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/UserEventServiceSettings.java
index b54f45a49090..91570c14a58d 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/UserEventServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/UserEventServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserEventServiceSettings extends ClientSettings<UserEventServiceSettings> {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/AnalyticsServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/AnalyticsServiceStub.java
index 5189b1e57b62..c5d29c6874a2 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/AnalyticsServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/AnalyticsServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AnalyticsServiceStub implements BackgroundResource {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/AnalyticsServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/AnalyticsServiceStubSettings.java
index dd3209783804..d411926cb34b 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/AnalyticsServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/AnalyticsServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AnalyticsServiceStubSettings extends StubSettings<AnalyticsServiceStubSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/CatalogServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/CatalogServiceStub.java
index ac7eb1de8be8..7aaf30cd9336 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/CatalogServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/CatalogServiceStub.java
@@ -38,6 +38,7 @@
 import com.google.cloud.retail.v2.UpdateCompletionConfigRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CatalogServiceStub implements BackgroundResource {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/CatalogServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/CatalogServiceStubSettings.java
index 38844e465a7f..c6b4422808d9 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/CatalogServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/CatalogServiceStubSettings.java
@@ -70,6 +70,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CatalogServiceStubSettings extends StubSettings<CatalogServiceStubSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/CompletionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/CompletionServiceStub.java
index 3b1c5f9cc52a..cd0fd9e4bb70 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/CompletionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/CompletionServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CompletionServiceStub implements BackgroundResource {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/CompletionServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/CompletionServiceStubSettings.java
index 38d79e71045a..4f30068cc28b 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/CompletionServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/CompletionServiceStubSettings.java
@@ -54,6 +54,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CompletionServiceStubSettings extends StubSettings<CompletionServiceStubSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ControlServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ControlServiceStub.java
index 1b115c0a142f..1b35c8126ec8 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ControlServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ControlServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.retail.v2.UpdateControlRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ControlServiceStub implements BackgroundResource {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ControlServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ControlServiceStubSettings.java
index 24911197d30b..95a98774a475 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ControlServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ControlServiceStubSettings.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ControlServiceStubSettings extends StubSettings<ControlServiceStubSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ConversationalSearchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ConversationalSearchServiceStub.java
index 87eb0fdb0a67..d3abc65d4cf5 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ConversationalSearchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ConversationalSearchServiceStub.java
@@ -21,6 +21,7 @@
 import com.google.cloud.retail.v2.ConversationalSearchRequest;
 import com.google.cloud.retail.v2.ConversationalSearchResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ConversationalSearchServiceStub implements BackgroundResource {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ConversationalSearchServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ConversationalSearchServiceStubSettings.java
index 7cc7615c09ec..e83ca45ce802 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ConversationalSearchServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ConversationalSearchServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ConversationalSearchServiceStubSettings
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GenerativeQuestionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GenerativeQuestionServiceStub.java
index 51838eeaa90f..4e743afe7155 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GenerativeQuestionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GenerativeQuestionServiceStub.java
@@ -28,6 +28,7 @@
 import com.google.cloud.retail.v2.UpdateGenerativeQuestionConfigRequest;
 import com.google.cloud.retail.v2.UpdateGenerativeQuestionsFeatureConfigRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GenerativeQuestionServiceStub implements BackgroundResource {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GenerativeQuestionServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GenerativeQuestionServiceStubSettings.java
index aadc8eb71dd6..a875ca17be55 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GenerativeQuestionServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GenerativeQuestionServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GenerativeQuestionServiceStubSettings
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcAnalyticsServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcAnalyticsServiceCallableFactory.java
index 0daba2ebfd92..e9d4abea18a4 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcAnalyticsServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcAnalyticsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAnalyticsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcAnalyticsServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcAnalyticsServiceStub.java
index cddcf46d7b35..cd6301ae2f53 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcAnalyticsServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcAnalyticsServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAnalyticsServiceStub extends AnalyticsServiceStub {
   private static final MethodDescriptor<ExportAnalyticsMetricsRequest, Operation>
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcCatalogServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcCatalogServiceCallableFactory.java
index 2a31eedc2813..5ac3b6ee2114 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcCatalogServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcCatalogServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCatalogServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcCatalogServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcCatalogServiceStub.java
index 1ddf85565048..38a40498ba17 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcCatalogServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcCatalogServiceStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCatalogServiceStub extends CatalogServiceStub {
   private static final MethodDescriptor<ListCatalogsRequest, ListCatalogsResponse>
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcCompletionServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcCompletionServiceCallableFactory.java
index 535ee30a1070..23182cf6d3e0 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcCompletionServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcCompletionServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCompletionServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcCompletionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcCompletionServiceStub.java
index 70f730b0823a..fe52763aa66c 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcCompletionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcCompletionServiceStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCompletionServiceStub extends CompletionServiceStub {
   private static final MethodDescriptor<CompleteQueryRequest, CompleteQueryResponse>
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcControlServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcControlServiceCallableFactory.java
index 7b67c3805e69..1aeb0e7c29e5 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcControlServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcControlServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcControlServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcControlServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcControlServiceStub.java
index 83c42a1676e1..d5f5a90ff024 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcControlServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcControlServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcControlServiceStub extends ControlServiceStub {
   private static final MethodDescriptor<CreateControlRequest, Control>
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcConversationalSearchServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcConversationalSearchServiceCallableFactory.java
index 8a643c36041c..7c40574028da 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcConversationalSearchServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcConversationalSearchServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConversationalSearchServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcConversationalSearchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcConversationalSearchServiceStub.java
index 3d85b69e4a30..4836e85f3ec2 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcConversationalSearchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcConversationalSearchServiceStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConversationalSearchServiceStub extends ConversationalSearchServiceStub {
   private static final MethodDescriptor<ConversationalSearchRequest, ConversationalSearchResponse>
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcGenerativeQuestionServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcGenerativeQuestionServiceCallableFactory.java
index a9d054de3a78..18eb7c2e9fc5 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcGenerativeQuestionServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcGenerativeQuestionServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGenerativeQuestionServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcGenerativeQuestionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcGenerativeQuestionServiceStub.java
index 4c6625fe43a2..655018a1a53e 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcGenerativeQuestionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcGenerativeQuestionServiceStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGenerativeQuestionServiceStub extends GenerativeQuestionServiceStub {
   private static final MethodDescriptor<
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcModelServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcModelServiceCallableFactory.java
index ec52ed57c093..cb9573cfaf6c 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcModelServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcModelServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcModelServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcModelServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcModelServiceStub.java
index 7e3bf78e1bf5..30d34c211b83 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcModelServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcModelServiceStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcModelServiceStub extends ModelServiceStub {
   private static final MethodDescriptor<CreateModelRequest, Operation> createModelMethodDescriptor =
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcPredictionServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcPredictionServiceCallableFactory.java
index 932a34d73761..00738391346e 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcPredictionServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcPredictionServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPredictionServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcPredictionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcPredictionServiceStub.java
index c296a1a93322..0bb027cb7a5a 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcPredictionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcPredictionServiceStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPredictionServiceStub extends PredictionServiceStub {
   private static final MethodDescriptor<PredictRequest, PredictResponse> predictMethodDescriptor =
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcProductServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcProductServiceCallableFactory.java
index 6d38185060d8..5fb013305b12 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcProductServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcProductServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcProductServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcProductServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcProductServiceStub.java
index fd4b4be0d48a..e7c901ab392e 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcProductServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcProductServiceStub.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcProductServiceStub extends ProductServiceStub {
   private static final MethodDescriptor<CreateProductRequest, Product>
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcSearchServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcSearchServiceCallableFactory.java
index 4b1bb8a798bd..c6672e8af764 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcSearchServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcSearchServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSearchServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcSearchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcSearchServiceStub.java
index 28c293aac30a..da837bb7c728 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcSearchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcSearchServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSearchServiceStub extends SearchServiceStub {
   private static final MethodDescriptor<SearchRequest, SearchResponse> searchMethodDescriptor =
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcServingConfigServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcServingConfigServiceCallableFactory.java
index 37081bb4792c..f18dde1a19f8 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcServingConfigServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcServingConfigServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServingConfigServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcServingConfigServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcServingConfigServiceStub.java
index d9589556124e..1cac2a2a1570 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcServingConfigServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcServingConfigServiceStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServingConfigServiceStub extends ServingConfigServiceStub {
   private static final MethodDescriptor<CreateServingConfigRequest, ServingConfig>
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcUserEventServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcUserEventServiceCallableFactory.java
index 96f3cd3e2451..b4064f0d164b 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcUserEventServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcUserEventServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcUserEventServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcUserEventServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcUserEventServiceStub.java
index 0fd7d094bff9..5ff5b130f834 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcUserEventServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/GrpcUserEventServiceStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcUserEventServiceStub extends UserEventServiceStub {
   private static final MethodDescriptor<WriteUserEventRequest, UserEvent>
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonAnalyticsServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonAnalyticsServiceCallableFactory.java
index 1bedda59d394..90df0ccfc026 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonAnalyticsServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonAnalyticsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAnalyticsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonAnalyticsServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonAnalyticsServiceStub.java
index b18268edf59c..2826b83d3b3f 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonAnalyticsServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonAnalyticsServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAnalyticsServiceStub extends AnalyticsServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonCatalogServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonCatalogServiceCallableFactory.java
index 069890d952a4..10388c2ef663 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonCatalogServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonCatalogServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCatalogServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonCatalogServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonCatalogServiceStub.java
index 5fa539ceff91..f26978a3358f 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonCatalogServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonCatalogServiceStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCatalogServiceStub extends CatalogServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonCompletionServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonCompletionServiceCallableFactory.java
index 73dbcff28d0e..1432b8a956a0 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonCompletionServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonCompletionServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCompletionServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonCompletionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonCompletionServiceStub.java
index aef88fc96470..011d1a4c6a18 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonCompletionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonCompletionServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCompletionServiceStub extends CompletionServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonControlServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonControlServiceCallableFactory.java
index 8c0880f764f8..6c040f2bd29b 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonControlServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonControlServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonControlServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonControlServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonControlServiceStub.java
index ba65112e5655..40e2eed92d10 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonControlServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonControlServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonControlServiceStub extends ControlServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonConversationalSearchServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonConversationalSearchServiceCallableFactory.java
index 718ca9b1d0b2..a36e3a8ffe0c 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonConversationalSearchServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonConversationalSearchServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationalSearchServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonConversationalSearchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonConversationalSearchServiceStub.java
index 7bf58b07db2b..09d421e32b15 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonConversationalSearchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonConversationalSearchServiceStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationalSearchServiceStub extends ConversationalSearchServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonGenerativeQuestionServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonGenerativeQuestionServiceCallableFactory.java
index 6715b13a77a3..316b7cf21ec8 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonGenerativeQuestionServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonGenerativeQuestionServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGenerativeQuestionServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonGenerativeQuestionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonGenerativeQuestionServiceStub.java
index a12bc80e48ee..26111ab68edb 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonGenerativeQuestionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonGenerativeQuestionServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGenerativeQuestionServiceStub extends GenerativeQuestionServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonModelServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonModelServiceCallableFactory.java
index aec8f3aa893c..2c7486c676d6 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonModelServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonModelServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonModelServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonModelServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonModelServiceStub.java
index b2cb22813927..ab1e0ed175a5 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonModelServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonModelServiceStub.java
@@ -58,6 +58,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonModelServiceStub extends ModelServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonPredictionServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonPredictionServiceCallableFactory.java
index eab4b3ffee49..3c7b5181226a 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonPredictionServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonPredictionServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPredictionServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonPredictionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonPredictionServiceStub.java
index 6c29b20714ce..9b0895b487b8 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonPredictionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonPredictionServiceStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPredictionServiceStub extends PredictionServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonProductServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonProductServiceCallableFactory.java
index a5c1911e150e..8e80abef19e8 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonProductServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonProductServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProductServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonProductServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonProductServiceStub.java
index 63f965f23206..97db9e30e3bc 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonProductServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonProductServiceStub.java
@@ -73,6 +73,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -80,6 +81,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProductServiceStub extends ProductServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonSearchServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonSearchServiceCallableFactory.java
index 068701d15476..0ad181a69b18 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonSearchServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonSearchServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSearchServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonSearchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonSearchServiceStub.java
index 8fb791176a19..abb62ea1995f 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonSearchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonSearchServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSearchServiceStub extends SearchServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonServingConfigServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonServingConfigServiceCallableFactory.java
index c5e602990d9e..43caab55e737 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonServingConfigServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonServingConfigServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServingConfigServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonServingConfigServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonServingConfigServiceStub.java
index 91c189229a33..5f04f19f4ca0 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonServingConfigServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonServingConfigServiceStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServingConfigServiceStub extends ServingConfigServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonUserEventServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonUserEventServiceCallableFactory.java
index 73ebbb5f9fcd..c6c82e1919be 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonUserEventServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonUserEventServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonUserEventServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonUserEventServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonUserEventServiceStub.java
index 9d43ad8bdb15..02e9defe8a42 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonUserEventServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/HttpJsonUserEventServiceStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonUserEventServiceStub extends UserEventServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ModelServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ModelServiceStub.java
index b3f11c68304e..f2fbec8a07a5 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ModelServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ModelServiceStub.java
@@ -38,6 +38,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ModelServiceStub implements BackgroundResource {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ModelServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ModelServiceStubSettings.java
index f86d31c3ab52..ff039b2cfbab 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ModelServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ModelServiceStubSettings.java
@@ -72,6 +72,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -149,6 +150,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ModelServiceStubSettings extends StubSettings<ModelServiceStubSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/PredictionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/PredictionServiceStub.java
index 6cf9153a3c30..1c5976425333 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/PredictionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/PredictionServiceStub.java
@@ -21,6 +21,7 @@
 import com.google.cloud.retail.v2.PredictRequest;
 import com.google.cloud.retail.v2.PredictResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PredictionServiceStub implements BackgroundResource {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/PredictionServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/PredictionServiceStubSettings.java
index 0aaf182f5972..d18d4bfd8a21 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/PredictionServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/PredictionServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PredictionServiceStubSettings extends StubSettings<PredictionServiceStubSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ProductServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ProductServiceStub.java
index 5c19bcd90477..f485fd20caa8 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ProductServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ProductServiceStub.java
@@ -53,6 +53,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ProductServiceStub implements BackgroundResource {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ProductServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ProductServiceStubSettings.java
index d8e6ce2e79d9..de48f2855c0d 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ProductServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ProductServiceStubSettings.java
@@ -87,6 +87,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -164,6 +165,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ProductServiceStubSettings extends StubSettings<ProductServiceStubSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/SearchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/SearchServiceStub.java
index c326bdbea5fd..515c03b6d4ef 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/SearchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/SearchServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.cloud.retail.v2.SearchRequest;
 import com.google.cloud.retail.v2.SearchResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SearchServiceStub implements BackgroundResource {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/SearchServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/SearchServiceStubSettings.java
index 67ec6dd3190e..859d383a4775 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/SearchServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/SearchServiceStubSettings.java
@@ -55,6 +55,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -106,6 +107,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SearchServiceStubSettings extends StubSettings<SearchServiceStubSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ServingConfigServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ServingConfigServiceStub.java
index 17cda4425972..986bcea9ced4 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ServingConfigServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ServingConfigServiceStub.java
@@ -31,6 +31,7 @@
 import com.google.cloud.retail.v2.UpdateServingConfigRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ServingConfigServiceStub implements BackgroundResource {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ServingConfigServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ServingConfigServiceStubSettings.java
index 0144813a04ac..c58af6170458 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ServingConfigServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/ServingConfigServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ServingConfigServiceStubSettings
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/UserEventServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/UserEventServiceStub.java
index ac472e5f55a2..120ee8ba16fc 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/UserEventServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/UserEventServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class UserEventServiceStub implements BackgroundResource {
 
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/UserEventServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/UserEventServiceStubSettings.java
index 8aae480acd2d..d1278249c2dc 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/UserEventServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2/stub/UserEventServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -139,6 +140,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class UserEventServiceStubSettings extends StubSettings<UserEventServiceStubSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/AnalyticsServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/AnalyticsServiceClient.java
index c2a0d5d33031..961275a62c6c 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/AnalyticsServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/AnalyticsServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -140,6 +141,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AnalyticsServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/AnalyticsServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/AnalyticsServiceSettings.java
index e1700b12ea11..1d498a8b409f 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/AnalyticsServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/AnalyticsServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AnalyticsServiceSettings extends ClientSettings<AnalyticsServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/BranchServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/BranchServiceClient.java
index bf279af9b142..8d1ef4f18d78 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/BranchServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/BranchServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class BranchServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/BranchServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/BranchServiceSettings.java
index 906dc7847784..cbbc33ddc64d 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/BranchServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/BranchServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class BranchServiceSettings extends ClientSettings<BranchServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/CatalogServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/CatalogServiceClient.java
index c8773c7843b1..23c234c3b2fe 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/CatalogServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/CatalogServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -339,6 +340,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CatalogServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/CatalogServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/CatalogServiceSettings.java
index 822bfa739726..4c73f499b79b 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/CatalogServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/CatalogServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CatalogServiceSettings extends ClientSettings<CatalogServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/CompletionServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/CompletionServiceClient.java
index 2c48bbbb0b7e..d17a82f308d9 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/CompletionServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/CompletionServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -164,6 +165,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CompletionServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/CompletionServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/CompletionServiceSettings.java
index 95f50c2b9686..2c5c0cd8bc02 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/CompletionServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/CompletionServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CompletionServiceSettings extends ClientSettings<CompletionServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ControlServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ControlServiceClient.java
index fba87982042e..188788555e5d 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ControlServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ControlServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -219,6 +220,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ControlServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ControlServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ControlServiceSettings.java
index a4197a633a8b..79c1a2198ed3 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ControlServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ControlServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ControlServiceSettings extends ClientSettings<ControlServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ConversationalSearchServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ConversationalSearchServiceClient.java
index ac068972e6c4..ecea9ecdf39d 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ConversationalSearchServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ConversationalSearchServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConversationalSearchServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ConversationalSearchServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ConversationalSearchServiceSettings.java
index 08b24136bb5f..2a9405f9c0e6 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ConversationalSearchServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ConversationalSearchServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConversationalSearchServiceSettings
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/GenerativeQuestionServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/GenerativeQuestionServiceClient.java
index b08e26fa7636..0e2222d92a16 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/GenerativeQuestionServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/GenerativeQuestionServiceClient.java
@@ -26,6 +26,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -210,6 +211,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GenerativeQuestionServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/GenerativeQuestionServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/GenerativeQuestionServiceSettings.java
index e352ae884e71..1d9a93fd08e4 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/GenerativeQuestionServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/GenerativeQuestionServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GenerativeQuestionServiceSettings
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/MerchantCenterAccountLinkServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/MerchantCenterAccountLinkServiceClient.java
index f9acfe36a0ec..f31891781453 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/MerchantCenterAccountLinkServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/MerchantCenterAccountLinkServiceClient.java
@@ -29,6 +29,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -178,6 +179,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MerchantCenterAccountLinkServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/MerchantCenterAccountLinkServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/MerchantCenterAccountLinkServiceSettings.java
index 32b7ef0ba02a..8ac61e317800 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/MerchantCenterAccountLinkServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/MerchantCenterAccountLinkServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MerchantCenterAccountLinkServiceSettings
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ModelServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ModelServiceClient.java
index d60b673e32b7..37605335ec00 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ModelServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ModelServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -287,6 +288,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ModelServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ModelServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ModelServiceSettings.java
index b691bc3e0c63..7af84b27b35d 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ModelServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ModelServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ModelServiceSettings extends ClientSettings<ModelServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/PredictionServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/PredictionServiceClient.java
index c536f22826aa..eaf4b4fc41c4 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/PredictionServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/PredictionServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PredictionServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/PredictionServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/PredictionServiceSettings.java
index d450a0f11918..b5cd51103bc2 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/PredictionServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/PredictionServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PredictionServiceSettings extends ClientSettings<PredictionServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ProductServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ProductServiceClient.java
index 1ccd94d929d7..2babaa708f09 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ProductServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ProductServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -392,6 +393,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProductServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ProductServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ProductServiceSettings.java
index b6964c247788..d2c1e41c95db 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ProductServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ProductServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProductServiceSettings extends ClientSettings<ProductServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ProjectServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ProjectServiceClient.java
index 960c3cd249f6..8fa954391d32 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ProjectServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ProjectServiceClient.java
@@ -29,6 +29,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -262,6 +263,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProjectServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ProjectServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ProjectServiceSettings.java
index 1ce7cb6a337c..11ed107a7e13 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ProjectServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ProjectServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProjectServiceSettings extends ClientSettings<ProjectServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/SearchServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/SearchServiceClient.java
index 9551f2c03ad9..7896610b879e 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/SearchServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/SearchServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -170,6 +171,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SearchServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/SearchServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/SearchServiceSettings.java
index c22a2cd1ece7..5c0aa9a072ae 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/SearchServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/SearchServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SearchServiceSettings extends ClientSettings<SearchServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ServingConfigServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ServingConfigServiceClient.java
index f5cd3136d6f9..69414ec681d1 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ServingConfigServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ServingConfigServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -263,6 +264,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ServingConfigServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ServingConfigServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ServingConfigServiceSettings.java
index 7ad45723285a..63e2978b0b5d 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ServingConfigServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/ServingConfigServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ServingConfigServiceSettings extends ClientSettings<ServingConfigServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/UserEventServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/UserEventServiceClient.java
index 6c7a73b62019..89cc881d6fb1 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/UserEventServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/UserEventServiceClient.java
@@ -29,6 +29,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -215,6 +216,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class UserEventServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/UserEventServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/UserEventServiceSettings.java
index 3b84a7ee5877..b8ac5e622e3b 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/UserEventServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/UserEventServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class UserEventServiceSettings extends ClientSettings<UserEventServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/AnalyticsServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/AnalyticsServiceStub.java
index 21e68336aad8..14583c0e0afc 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/AnalyticsServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/AnalyticsServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AnalyticsServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/AnalyticsServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/AnalyticsServiceStubSettings.java
index 56da1d95619a..b0ca9dedd7f9 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/AnalyticsServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/AnalyticsServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/BranchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/BranchServiceStub.java
index b3f39d62d0b6..9a46c2e0ef29 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/BranchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/BranchServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.cloud.retail.v2alpha.ListBranchesRequest;
 import com.google.cloud.retail.v2alpha.ListBranchesResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class BranchServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/BranchServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/BranchServiceStubSettings.java
index d122a9004d9a..e122fd47ecd1 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/BranchServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/BranchServiceStubSettings.java
@@ -48,6 +48,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/CatalogServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/CatalogServiceStub.java
index f1d568809fe6..a3e7f28dbe8a 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/CatalogServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/CatalogServiceStub.java
@@ -41,6 +41,7 @@
 import com.google.cloud.retail.v2alpha.UpdateCompletionConfigRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CatalogServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/CatalogServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/CatalogServiceStubSettings.java
index ec1345448ae0..ccead54e4498 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/CatalogServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/CatalogServiceStubSettings.java
@@ -72,6 +72,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/CompletionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/CompletionServiceStub.java
index 44a5476cc976..e08822720fee 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/CompletionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/CompletionServiceStub.java
@@ -28,6 +28,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CompletionServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/CompletionServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/CompletionServiceStubSettings.java
index 6bbb08b9e2c1..38c50510f49f 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/CompletionServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/CompletionServiceStubSettings.java
@@ -54,6 +54,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ControlServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ControlServiceStub.java
index 8383ae8ef72d..ffa54cbb5f11 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ControlServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ControlServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.retail.v2alpha.UpdateControlRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ControlServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ControlServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ControlServiceStubSettings.java
index 038151b4dc97..93001f0b74b3 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ControlServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ControlServiceStubSettings.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ConversationalSearchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ConversationalSearchServiceStub.java
index 6c41ce8fc4b7..7f937b5144f7 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ConversationalSearchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ConversationalSearchServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.retail.v2alpha.ConversationalSearchRequest;
 import com.google.cloud.retail.v2alpha.ConversationalSearchResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ConversationalSearchServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ConversationalSearchServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ConversationalSearchServiceStubSettings.java
index 2d9634b5fb63..7226a4381857 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ConversationalSearchServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ConversationalSearchServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GenerativeQuestionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GenerativeQuestionServiceStub.java
index 63157a4935ff..28ecd075cd6f 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GenerativeQuestionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GenerativeQuestionServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.retail.v2alpha.UpdateGenerativeQuestionConfigRequest;
 import com.google.cloud.retail.v2alpha.UpdateGenerativeQuestionsFeatureConfigRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class GenerativeQuestionServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GenerativeQuestionServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GenerativeQuestionServiceStubSettings.java
index 6a93ad154db8..f6316d193131 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GenerativeQuestionServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GenerativeQuestionServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcAnalyticsServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcAnalyticsServiceCallableFactory.java
index cddc2058f721..0f58b3f53dea 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcAnalyticsServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcAnalyticsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAnalyticsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcAnalyticsServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcAnalyticsServiceStub.java
index 665ff634f7da..8d0897666857 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcAnalyticsServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcAnalyticsServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAnalyticsServiceStub extends AnalyticsServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcBranchServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcBranchServiceCallableFactory.java
index 70379724407f..286b565de6a3 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcBranchServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcBranchServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcBranchServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcBranchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcBranchServiceStub.java
index 892b52048c41..dac999df8970 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcBranchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcBranchServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcBranchServiceStub extends BranchServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcCatalogServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcCatalogServiceCallableFactory.java
index 4c127d289e52..753bff72dd54 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcCatalogServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcCatalogServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCatalogServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcCatalogServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcCatalogServiceStub.java
index 09c386018ce3..8ea6e61f34fa 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcCatalogServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcCatalogServiceStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCatalogServiceStub extends CatalogServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcCompletionServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcCompletionServiceCallableFactory.java
index 837c1e5d7a96..173753b07da7 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcCompletionServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcCompletionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCompletionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcCompletionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcCompletionServiceStub.java
index 4bc3bd983a33..e102c72c6bbf 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcCompletionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcCompletionServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCompletionServiceStub extends CompletionServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcControlServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcControlServiceCallableFactory.java
index c9f3b1f1ff17..bbf5a7601e0e 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcControlServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcControlServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcControlServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcControlServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcControlServiceStub.java
index 3c187e69d009..8be823eb1971 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcControlServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcControlServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcControlServiceStub extends ControlServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcConversationalSearchServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcConversationalSearchServiceCallableFactory.java
index 2701e9737269..b9d65b0d2c0e 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcConversationalSearchServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcConversationalSearchServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConversationalSearchServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcConversationalSearchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcConversationalSearchServiceStub.java
index 8baee54009d2..65264355117f 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcConversationalSearchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcConversationalSearchServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConversationalSearchServiceStub extends ConversationalSearchServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcGenerativeQuestionServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcGenerativeQuestionServiceCallableFactory.java
index 13a41b42befe..9d02195c1908 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcGenerativeQuestionServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcGenerativeQuestionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGenerativeQuestionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcGenerativeQuestionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcGenerativeQuestionServiceStub.java
index 6e68508796fa..e9a801ade649 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcGenerativeQuestionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcGenerativeQuestionServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGenerativeQuestionServiceStub extends GenerativeQuestionServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcMerchantCenterAccountLinkServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcMerchantCenterAccountLinkServiceCallableFactory.java
index 22a120cfc1e7..a712bfe95267 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcMerchantCenterAccountLinkServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcMerchantCenterAccountLinkServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMerchantCenterAccountLinkServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcMerchantCenterAccountLinkServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcMerchantCenterAccountLinkServiceStub.java
index c34ba30a1941..14520e20410a 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcMerchantCenterAccountLinkServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcMerchantCenterAccountLinkServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMerchantCenterAccountLinkServiceStub extends MerchantCenterAccountLinkServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcModelServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcModelServiceCallableFactory.java
index c4f2b4125105..0877a31dd7f0 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcModelServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcModelServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcModelServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcModelServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcModelServiceStub.java
index 8dd048b5ddeb..463b78efe7b1 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcModelServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcModelServiceStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcModelServiceStub extends ModelServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcPredictionServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcPredictionServiceCallableFactory.java
index 1b420d406b1f..af610f12c701 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcPredictionServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcPredictionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPredictionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcPredictionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcPredictionServiceStub.java
index 5c7f79150ad0..9fda4a83d306 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcPredictionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcPredictionServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPredictionServiceStub extends PredictionServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcProductServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcProductServiceCallableFactory.java
index 2acee79d7466..29a004392abb 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcProductServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcProductServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProductServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcProductServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcProductServiceStub.java
index 29a88e67de45..5509873ac239 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcProductServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcProductServiceStub.java
@@ -66,6 +66,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProductServiceStub extends ProductServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcProjectServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcProjectServiceCallableFactory.java
index 311cdd4dffec..ae5327f17ad9 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcProjectServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcProjectServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProjectServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcProjectServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcProjectServiceStub.java
index 1efca797194d..7a325e4c21e9 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcProjectServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcProjectServiceStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProjectServiceStub extends ProjectServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcSearchServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcSearchServiceCallableFactory.java
index 1616886cf733..4e2b4c45d4fc 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcSearchServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcSearchServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSearchServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcSearchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcSearchServiceStub.java
index 22581d45ceef..b4dec3e6bbfb 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcSearchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcSearchServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSearchServiceStub extends SearchServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcServingConfigServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcServingConfigServiceCallableFactory.java
index 8329f124687f..a6a6c4516f9f 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcServingConfigServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcServingConfigServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcServingConfigServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcServingConfigServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcServingConfigServiceStub.java
index ca04f88ee48f..367459c83f58 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcServingConfigServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcServingConfigServiceStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcServingConfigServiceStub extends ServingConfigServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcUserEventServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcUserEventServiceCallableFactory.java
index 5ec0026974a7..23e6ad78511e 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcUserEventServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcUserEventServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcUserEventServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcUserEventServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcUserEventServiceStub.java
index 31c245f53a88..ccc3fd3b0507 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcUserEventServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/GrpcUserEventServiceStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcUserEventServiceStub extends UserEventServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonAnalyticsServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonAnalyticsServiceCallableFactory.java
index 4fb2ad0b0a03..1e79578256d6 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonAnalyticsServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonAnalyticsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAnalyticsServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonAnalyticsServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonAnalyticsServiceStub.java
index 9e1de703ab7a..ac6ee10d8dc7 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonAnalyticsServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonAnalyticsServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAnalyticsServiceStub extends AnalyticsServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonBranchServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonBranchServiceCallableFactory.java
index b3deb33ade8f..070d3f863060 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonBranchServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonBranchServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonBranchServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonBranchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonBranchServiceStub.java
index 44ecd77c2d68..587ad923c6d3 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonBranchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonBranchServiceStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonBranchServiceStub extends BranchServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonCatalogServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonCatalogServiceCallableFactory.java
index e6f7dfa20bec..20c55e6c6b6b 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonCatalogServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonCatalogServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCatalogServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonCatalogServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonCatalogServiceStub.java
index ee03e297ed92..ed66b69aaf2d 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonCatalogServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonCatalogServiceStub.java
@@ -58,6 +58,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCatalogServiceStub extends CatalogServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonCompletionServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonCompletionServiceCallableFactory.java
index b78d02161f65..4ad51c99b258 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonCompletionServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonCompletionServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCompletionServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonCompletionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonCompletionServiceStub.java
index 61bd52b484b9..88908305c76e 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonCompletionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonCompletionServiceStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCompletionServiceStub extends CompletionServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonControlServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonControlServiceCallableFactory.java
index c514c5b7c486..5b46f38a927c 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonControlServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonControlServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonControlServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonControlServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonControlServiceStub.java
index 7b7303cf76e5..554ae3bf2874 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonControlServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonControlServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonControlServiceStub extends ControlServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonConversationalSearchServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonConversationalSearchServiceCallableFactory.java
index f0e7fcc04fe6..517d96f00fd1 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonConversationalSearchServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonConversationalSearchServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationalSearchServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonConversationalSearchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonConversationalSearchServiceStub.java
index 91a208075290..90c5b6ffcd4f 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonConversationalSearchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonConversationalSearchServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationalSearchServiceStub extends ConversationalSearchServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonGenerativeQuestionServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonGenerativeQuestionServiceCallableFactory.java
index 08fba3bc9446..7880f513c3b6 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonGenerativeQuestionServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonGenerativeQuestionServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGenerativeQuestionServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonGenerativeQuestionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonGenerativeQuestionServiceStub.java
index a18c5db24f70..dfd8178d8174 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonGenerativeQuestionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonGenerativeQuestionServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGenerativeQuestionServiceStub extends GenerativeQuestionServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonMerchantCenterAccountLinkServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonMerchantCenterAccountLinkServiceCallableFactory.java
index 63aa6e37441e..b41360cb6157 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonMerchantCenterAccountLinkServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonMerchantCenterAccountLinkServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMerchantCenterAccountLinkServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonMerchantCenterAccountLinkServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonMerchantCenterAccountLinkServiceStub.java
index eb8410866ee8..2080ccc32f45 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonMerchantCenterAccountLinkServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonMerchantCenterAccountLinkServiceStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMerchantCenterAccountLinkServiceStub
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonModelServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonModelServiceCallableFactory.java
index 28df33b224b1..2a9f944ec3b3 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonModelServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonModelServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonModelServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonModelServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonModelServiceStub.java
index 33fd9a36eab9..a5b8485db4a2 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonModelServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonModelServiceStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonModelServiceStub extends ModelServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonPredictionServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonPredictionServiceCallableFactory.java
index 421b7fc0a158..2fc2b6b23d2a 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonPredictionServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonPredictionServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPredictionServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonPredictionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonPredictionServiceStub.java
index fa559e0c067f..3074f7d8dd32 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonPredictionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonPredictionServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPredictionServiceStub extends PredictionServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonProductServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonProductServiceCallableFactory.java
index efb74e9b3217..b1f9ac7a09e7 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonProductServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonProductServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProductServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonProductServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonProductServiceStub.java
index c869c8ac8aba..c3c429990eec 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonProductServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonProductServiceStub.java
@@ -77,6 +77,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProductServiceStub extends ProductServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonProjectServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonProjectServiceCallableFactory.java
index a27f5283e978..c3079b0c0f2b 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonProjectServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonProjectServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProjectServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonProjectServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonProjectServiceStub.java
index f29f8a96218f..e556d78c93cd 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonProjectServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonProjectServiceStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProjectServiceStub extends ProjectServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonSearchServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonSearchServiceCallableFactory.java
index ac73ade1a810..2b992db560b2 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonSearchServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonSearchServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSearchServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonSearchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonSearchServiceStub.java
index 4f7a1978d289..daca999e14cb 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonSearchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonSearchServiceStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSearchServiceStub extends SearchServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonServingConfigServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonServingConfigServiceCallableFactory.java
index df165db87f96..eb6ae07f5630 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonServingConfigServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonServingConfigServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonServingConfigServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonServingConfigServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonServingConfigServiceStub.java
index b0c19d236099..e1c1dea58435 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonServingConfigServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonServingConfigServiceStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonServingConfigServiceStub extends ServingConfigServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonUserEventServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonUserEventServiceCallableFactory.java
index 3b20f187d0c7..22ab7519dbe9 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonUserEventServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonUserEventServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonUserEventServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonUserEventServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonUserEventServiceStub.java
index f0839be698fd..65c221599d32 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonUserEventServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/HttpJsonUserEventServiceStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonUserEventServiceStub extends UserEventServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/MerchantCenterAccountLinkServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/MerchantCenterAccountLinkServiceStub.java
index 87a9995ab6fe..800f585de109 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/MerchantCenterAccountLinkServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/MerchantCenterAccountLinkServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class MerchantCenterAccountLinkServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/MerchantCenterAccountLinkServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/MerchantCenterAccountLinkServiceStubSettings.java
index 08af9259d4d8..f091425667af 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/MerchantCenterAccountLinkServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/MerchantCenterAccountLinkServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -136,6 +137,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ModelServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ModelServiceStub.java
index c21678b2dbb5..25a9e481d631 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ModelServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ModelServiceStub.java
@@ -39,6 +39,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ModelServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ModelServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ModelServiceStubSettings.java
index 0c83527f462c..12fdfeffefb2 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ModelServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ModelServiceStubSettings.java
@@ -72,6 +72,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -149,6 +150,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/PredictionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/PredictionServiceStub.java
index 23a880629571..b0929064c014 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/PredictionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/PredictionServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.retail.v2alpha.PredictRequest;
 import com.google.cloud.retail.v2alpha.PredictResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PredictionServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/PredictionServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/PredictionServiceStubSettings.java
index 2d801bb091b1..786a88e87c09 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/PredictionServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/PredictionServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ProductServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ProductServiceStub.java
index bb2fab1bc797..eb9b38b6b7c3 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ProductServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ProductServiceStub.java
@@ -57,6 +57,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ProductServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ProductServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ProductServiceStubSettings.java
index 509de2d4f42e..b6bee8fbf80b 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ProductServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ProductServiceStubSettings.java
@@ -90,6 +90,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ProjectServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ProjectServiceStub.java
index 91e960e15806..563b80d8043d 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ProjectServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ProjectServiceStub.java
@@ -37,6 +37,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ProjectServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ProjectServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ProjectServiceStubSettings.java
index a37c020d495a..d4a941e5da18 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ProjectServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ProjectServiceStubSettings.java
@@ -63,6 +63,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -140,6 +141,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/SearchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/SearchServiceStub.java
index 08b9ab02b73e..79ebbcb37a97 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/SearchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/SearchServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.cloud.retail.v2alpha.SearchRequest;
 import com.google.cloud.retail.v2alpha.SearchResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SearchServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/SearchServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/SearchServiceStubSettings.java
index 0e0f678fc497..d11e46addc78 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/SearchServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/SearchServiceStubSettings.java
@@ -55,6 +55,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -106,6 +107,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ServingConfigServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ServingConfigServiceStub.java
index dd281e7adadb..e2a3158eca3f 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ServingConfigServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ServingConfigServiceStub.java
@@ -32,6 +32,7 @@
 import com.google.cloud.retail.v2alpha.UpdateServingConfigRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ServingConfigServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ServingConfigServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ServingConfigServiceStubSettings.java
index 8d32ab0cc8e5..8239989507e5 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ServingConfigServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/ServingConfigServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/UserEventServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/UserEventServiceStub.java
index c8bfa2e32ed0..857c3889dffa 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/UserEventServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/UserEventServiceStub.java
@@ -39,6 +39,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class UserEventServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/UserEventServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/UserEventServiceStubSettings.java
index 14a01121b641..904bd2ba462f 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/UserEventServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2alpha/stub/UserEventServiceStubSettings.java
@@ -65,6 +65,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -142,6 +143,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/AnalyticsServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/AnalyticsServiceClient.java
index fd2b8bd22c30..28b761a757e6 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/AnalyticsServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/AnalyticsServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -140,6 +141,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AnalyticsServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/AnalyticsServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/AnalyticsServiceSettings.java
index 1c28f96d1442..bf8c7edd3db2 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/AnalyticsServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/AnalyticsServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AnalyticsServiceSettings extends ClientSettings<AnalyticsServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/CatalogServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/CatalogServiceClient.java
index c3923fce6697..47435de65353 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/CatalogServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/CatalogServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -339,6 +340,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CatalogServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/CatalogServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/CatalogServiceSettings.java
index 41f5f378591e..d2c25ba83d4a 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/CatalogServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/CatalogServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CatalogServiceSettings extends ClientSettings<CatalogServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/CompletionServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/CompletionServiceClient.java
index 9511477759e3..3f91e945558e 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/CompletionServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/CompletionServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -164,6 +165,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CompletionServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/CompletionServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/CompletionServiceSettings.java
index eba1192ab437..d9ec9ed4ca7a 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/CompletionServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/CompletionServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CompletionServiceSettings extends ClientSettings<CompletionServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ControlServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ControlServiceClient.java
index e2f19a5d9914..d2121005fad5 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ControlServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ControlServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -219,6 +220,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ControlServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ControlServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ControlServiceSettings.java
index dc49ed19b90b..2f0b12cd0437 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ControlServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ControlServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ControlServiceSettings extends ClientSettings<ControlServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ConversationalSearchServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ConversationalSearchServiceClient.java
index ef9f4e99447b..482baca4410d 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ConversationalSearchServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ConversationalSearchServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConversationalSearchServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ConversationalSearchServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ConversationalSearchServiceSettings.java
index d08a95165fe2..47cb0bd6d7ac 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ConversationalSearchServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ConversationalSearchServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConversationalSearchServiceSettings
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/GenerativeQuestionServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/GenerativeQuestionServiceClient.java
index 94478367eebc..a07e82fde38d 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/GenerativeQuestionServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/GenerativeQuestionServiceClient.java
@@ -26,6 +26,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -210,6 +211,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GenerativeQuestionServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/GenerativeQuestionServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/GenerativeQuestionServiceSettings.java
index f233eb2e3e1e..00b7fbf24a6d 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/GenerativeQuestionServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/GenerativeQuestionServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GenerativeQuestionServiceSettings
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ModelServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ModelServiceClient.java
index 7337ffd32eab..4d896b764586 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ModelServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ModelServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -287,6 +288,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ModelServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ModelServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ModelServiceSettings.java
index aa051ed3efdb..8ec162182731 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ModelServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ModelServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ModelServiceSettings extends ClientSettings<ModelServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/PredictionServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/PredictionServiceClient.java
index 254a097ee861..769fd17bef51 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/PredictionServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/PredictionServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PredictionServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/PredictionServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/PredictionServiceSettings.java
index fde972cec427..2577770bf079 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/PredictionServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/PredictionServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PredictionServiceSettings extends ClientSettings<PredictionServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ProductServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ProductServiceClient.java
index 065bd76cf881..41cdf5ba125b 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ProductServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ProductServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -392,6 +393,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProductServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ProductServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ProductServiceSettings.java
index 88087923ec6f..bc89fe4d3e07 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ProductServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ProductServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProductServiceSettings extends ClientSettings<ProductServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ProjectServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ProjectServiceClient.java
index 451429efbf23..fcb6bfaf9229 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ProjectServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ProjectServiceClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProjectServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ProjectServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ProjectServiceSettings.java
index c5b91f8baef3..bdc73b637926 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ProjectServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ProjectServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProjectServiceSettings extends ClientSettings<ProjectServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/SearchServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/SearchServiceClient.java
index 280fc96258cf..1f03b75e566b 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/SearchServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/SearchServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -169,6 +170,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SearchServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/SearchServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/SearchServiceSettings.java
index d4ee2d21e59a..7ddedf27d6e5 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/SearchServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/SearchServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SearchServiceSettings extends ClientSettings<SearchServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ServingConfigServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ServingConfigServiceClient.java
index 037b1cf233f5..6c3038cdd69c 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ServingConfigServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ServingConfigServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -263,6 +264,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ServingConfigServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ServingConfigServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ServingConfigServiceSettings.java
index b8ab83bdb402..48df337c75c4 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ServingConfigServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/ServingConfigServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ServingConfigServiceSettings extends ClientSettings<ServingConfigServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/UserEventServiceClient.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/UserEventServiceClient.java
index d12b3fcba9f3..a3c20e1f9001 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/UserEventServiceClient.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/UserEventServiceClient.java
@@ -29,6 +29,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -215,6 +216,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class UserEventServiceClient implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/UserEventServiceSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/UserEventServiceSettings.java
index fe97b24cb629..037136c6413c 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/UserEventServiceSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/UserEventServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class UserEventServiceSettings extends ClientSettings<UserEventServiceSettings> {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/AnalyticsServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/AnalyticsServiceStub.java
index f6c0fa37bc91..fb8a4d7952e9 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/AnalyticsServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/AnalyticsServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AnalyticsServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/AnalyticsServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/AnalyticsServiceStubSettings.java
index b2eda643b1b4..bbbfde169c98 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/AnalyticsServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/AnalyticsServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/CatalogServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/CatalogServiceStub.java
index a71f6cbf2c44..f6eedb66777c 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/CatalogServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/CatalogServiceStub.java
@@ -41,6 +41,7 @@
 import com.google.cloud.retail.v2beta.UpdateCompletionConfigRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CatalogServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/CatalogServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/CatalogServiceStubSettings.java
index 15f1f2777cdc..819145a3f936 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/CatalogServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/CatalogServiceStubSettings.java
@@ -72,6 +72,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/CompletionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/CompletionServiceStub.java
index f5ca264e95cd..ead1085e1901 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/CompletionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/CompletionServiceStub.java
@@ -28,6 +28,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CompletionServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/CompletionServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/CompletionServiceStubSettings.java
index c8af541413ad..2860670c3338 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/CompletionServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/CompletionServiceStubSettings.java
@@ -54,6 +54,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ControlServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ControlServiceStub.java
index 52bbbf7180d0..9eeedbd5f4de 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ControlServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ControlServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.retail.v2beta.UpdateControlRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ControlServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ControlServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ControlServiceStubSettings.java
index 94fab2ace7fd..01d9af079be0 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ControlServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ControlServiceStubSettings.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ConversationalSearchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ConversationalSearchServiceStub.java
index 8bb38507622d..f91d08baea8e 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ConversationalSearchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ConversationalSearchServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.retail.v2beta.ConversationalSearchRequest;
 import com.google.cloud.retail.v2beta.ConversationalSearchResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ConversationalSearchServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ConversationalSearchServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ConversationalSearchServiceStubSettings.java
index 75125df5ccb9..890984714e46 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ConversationalSearchServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ConversationalSearchServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GenerativeQuestionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GenerativeQuestionServiceStub.java
index 3585d2780b65..de150113b367 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GenerativeQuestionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GenerativeQuestionServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.retail.v2beta.UpdateGenerativeQuestionConfigRequest;
 import com.google.cloud.retail.v2beta.UpdateGenerativeQuestionsFeatureConfigRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class GenerativeQuestionServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GenerativeQuestionServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GenerativeQuestionServiceStubSettings.java
index ee43f0282ebc..f76ea4dc1f76 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GenerativeQuestionServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GenerativeQuestionServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcAnalyticsServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcAnalyticsServiceCallableFactory.java
index f472c2948020..255342a14508 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcAnalyticsServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcAnalyticsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAnalyticsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcAnalyticsServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcAnalyticsServiceStub.java
index de17214a415a..48c8b743eb9d 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcAnalyticsServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcAnalyticsServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAnalyticsServiceStub extends AnalyticsServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcCatalogServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcCatalogServiceCallableFactory.java
index 8e34226f9d2f..cacb9c418adc 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcCatalogServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcCatalogServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCatalogServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcCatalogServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcCatalogServiceStub.java
index 4c4673abb56d..8a124176cce4 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcCatalogServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcCatalogServiceStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCatalogServiceStub extends CatalogServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcCompletionServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcCompletionServiceCallableFactory.java
index acd0116b8f72..c907a9ce3773 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcCompletionServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcCompletionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCompletionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcCompletionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcCompletionServiceStub.java
index 7eea4c21048f..3cd8433d02ae 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcCompletionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcCompletionServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCompletionServiceStub extends CompletionServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcControlServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcControlServiceCallableFactory.java
index 886edbde840d..e88d2796dfea 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcControlServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcControlServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcControlServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcControlServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcControlServiceStub.java
index 4cedf94f569d..aed4a2cd9359 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcControlServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcControlServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcControlServiceStub extends ControlServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcConversationalSearchServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcConversationalSearchServiceCallableFactory.java
index ab31f6bd5418..596444156168 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcConversationalSearchServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcConversationalSearchServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConversationalSearchServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcConversationalSearchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcConversationalSearchServiceStub.java
index 6d8bdb9d50cd..094cb99b1caa 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcConversationalSearchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcConversationalSearchServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConversationalSearchServiceStub extends ConversationalSearchServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcGenerativeQuestionServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcGenerativeQuestionServiceCallableFactory.java
index 2890787afb72..8d2c2d1d4343 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcGenerativeQuestionServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcGenerativeQuestionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGenerativeQuestionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcGenerativeQuestionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcGenerativeQuestionServiceStub.java
index d5b7c08a2c53..2b42ade72ee0 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcGenerativeQuestionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcGenerativeQuestionServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGenerativeQuestionServiceStub extends GenerativeQuestionServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcModelServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcModelServiceCallableFactory.java
index 64d24c9abbed..c3423fc2fa64 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcModelServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcModelServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcModelServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcModelServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcModelServiceStub.java
index 68400c8f81a7..37536854f8bd 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcModelServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcModelServiceStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcModelServiceStub extends ModelServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcPredictionServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcPredictionServiceCallableFactory.java
index 4fc4267d14ae..14da07735a6f 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcPredictionServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcPredictionServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPredictionServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcPredictionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcPredictionServiceStub.java
index bac0aad45a60..e63bad9e7094 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcPredictionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcPredictionServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPredictionServiceStub extends PredictionServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcProductServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcProductServiceCallableFactory.java
index c98b5cfc77b4..797a264fc581 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcProductServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcProductServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProductServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcProductServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcProductServiceStub.java
index 5c6bb926a734..02fc69099d56 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcProductServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcProductServiceStub.java
@@ -66,6 +66,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProductServiceStub extends ProductServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcProjectServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcProjectServiceCallableFactory.java
index 1b07a394e90d..1705ea0ef9f9 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcProjectServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcProjectServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProjectServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcProjectServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcProjectServiceStub.java
index 86983b5db148..6f7349563916 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcProjectServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcProjectServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProjectServiceStub extends ProjectServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcSearchServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcSearchServiceCallableFactory.java
index 2ff53c34e015..c70d00ae6898 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcSearchServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcSearchServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSearchServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcSearchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcSearchServiceStub.java
index 73ae4cba99e9..60dc108c963f 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcSearchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcSearchServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSearchServiceStub extends SearchServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcServingConfigServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcServingConfigServiceCallableFactory.java
index d5cf8dbbfa63..46c4f0ecae70 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcServingConfigServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcServingConfigServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcServingConfigServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcServingConfigServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcServingConfigServiceStub.java
index b6bd6d91f978..e716050468d4 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcServingConfigServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcServingConfigServiceStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcServingConfigServiceStub extends ServingConfigServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcUserEventServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcUserEventServiceCallableFactory.java
index 6488a2c3dc1e..4c472779c13c 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcUserEventServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcUserEventServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcUserEventServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcUserEventServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcUserEventServiceStub.java
index d26535c28dab..779514a4c0ab 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcUserEventServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/GrpcUserEventServiceStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcUserEventServiceStub extends UserEventServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonAnalyticsServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonAnalyticsServiceCallableFactory.java
index 7dfbada27ff9..e33a71b28554 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonAnalyticsServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonAnalyticsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAnalyticsServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonAnalyticsServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonAnalyticsServiceStub.java
index 3e3d143211ba..cd4dd5c12bb6 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonAnalyticsServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonAnalyticsServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAnalyticsServiceStub extends AnalyticsServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonCatalogServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonCatalogServiceCallableFactory.java
index d3fb43942001..4f0a2bec1917 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonCatalogServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonCatalogServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCatalogServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonCatalogServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonCatalogServiceStub.java
index 4de0da0cce12..b34b1e4d6faf 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonCatalogServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonCatalogServiceStub.java
@@ -58,6 +58,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCatalogServiceStub extends CatalogServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonCompletionServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonCompletionServiceCallableFactory.java
index e36ce2d32f72..bff99f5bd145 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonCompletionServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonCompletionServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCompletionServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonCompletionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonCompletionServiceStub.java
index c1973cf6eb25..d00564c5dca2 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonCompletionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonCompletionServiceStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCompletionServiceStub extends CompletionServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonControlServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonControlServiceCallableFactory.java
index 7bea828cf94e..a0d6ab4b58ac 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonControlServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonControlServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonControlServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonControlServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonControlServiceStub.java
index e15b24e1cae8..874623eddd69 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonControlServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonControlServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonControlServiceStub extends ControlServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonConversationalSearchServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonConversationalSearchServiceCallableFactory.java
index 3622077c1c40..e9f0a8d517e1 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonConversationalSearchServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonConversationalSearchServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationalSearchServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonConversationalSearchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonConversationalSearchServiceStub.java
index 5db974314454..92e1790af1d3 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonConversationalSearchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonConversationalSearchServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConversationalSearchServiceStub extends ConversationalSearchServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonGenerativeQuestionServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonGenerativeQuestionServiceCallableFactory.java
index 0c51bec81093..84c1eef83679 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonGenerativeQuestionServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonGenerativeQuestionServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGenerativeQuestionServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonGenerativeQuestionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonGenerativeQuestionServiceStub.java
index 1eb924e7f0ce..5a099c210046 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonGenerativeQuestionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonGenerativeQuestionServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGenerativeQuestionServiceStub extends GenerativeQuestionServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonModelServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonModelServiceCallableFactory.java
index 0b8f3bdfbe65..6e7ac5f305f7 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonModelServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonModelServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonModelServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonModelServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonModelServiceStub.java
index 2b11c337bb97..6ee41aca5bba 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonModelServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonModelServiceStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonModelServiceStub extends ModelServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonPredictionServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonPredictionServiceCallableFactory.java
index 210015cea907..6cf1e30d225b 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonPredictionServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonPredictionServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPredictionServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonPredictionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonPredictionServiceStub.java
index 82fd0a86e596..4799e357081a 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonPredictionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonPredictionServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPredictionServiceStub extends PredictionServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonProductServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonProductServiceCallableFactory.java
index f512ef2aa23d..8a7ea9b5efce 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonProductServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonProductServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProductServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonProductServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonProductServiceStub.java
index 55118fa20487..b2a9359c20fb 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonProductServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonProductServiceStub.java
@@ -77,6 +77,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProductServiceStub extends ProductServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonProjectServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonProjectServiceCallableFactory.java
index e678b490dc29..7c0f0406006e 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonProjectServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonProjectServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProjectServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonProjectServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonProjectServiceStub.java
index ef98b0f34367..36371f21a03c 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonProjectServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonProjectServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProjectServiceStub extends ProjectServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonSearchServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonSearchServiceCallableFactory.java
index 01a61eb2c373..5f2535dcd260 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonSearchServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonSearchServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSearchServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonSearchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonSearchServiceStub.java
index eab593a87f3e..ff779c017321 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonSearchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonSearchServiceStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSearchServiceStub extends SearchServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonServingConfigServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonServingConfigServiceCallableFactory.java
index 48fcb959ca38..4475ea7d7455 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonServingConfigServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonServingConfigServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonServingConfigServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonServingConfigServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonServingConfigServiceStub.java
index 5d36c642c655..0e3861d5d13d 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonServingConfigServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonServingConfigServiceStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonServingConfigServiceStub extends ServingConfigServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonUserEventServiceCallableFactory.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonUserEventServiceCallableFactory.java
index 710ba8897c21..84032774d0d0 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonUserEventServiceCallableFactory.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonUserEventServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonUserEventServiceCallableFactory
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonUserEventServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonUserEventServiceStub.java
index ec82cdcd7bd4..d6680cc5041c 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonUserEventServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/HttpJsonUserEventServiceStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonUserEventServiceStub extends UserEventServiceStub {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ModelServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ModelServiceStub.java
index afef939fdb0c..5080cc96d9cf 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ModelServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ModelServiceStub.java
@@ -39,6 +39,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ModelServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ModelServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ModelServiceStubSettings.java
index 6137430842fb..e9c94134ad2d 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ModelServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ModelServiceStubSettings.java
@@ -72,6 +72,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -149,6 +150,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/PredictionServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/PredictionServiceStub.java
index 18cf0d7c938e..64b6a592a9aa 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/PredictionServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/PredictionServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.retail.v2beta.PredictRequest;
 import com.google.cloud.retail.v2beta.PredictResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PredictionServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/PredictionServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/PredictionServiceStubSettings.java
index 82c4634759a0..cda8adabfd30 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/PredictionServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/PredictionServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ProductServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ProductServiceStub.java
index a721c147af46..d537fcd93909 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ProductServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ProductServiceStub.java
@@ -57,6 +57,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ProductServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ProductServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ProductServiceStubSettings.java
index e3f05cf24526..c68931cdfdf8 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ProductServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ProductServiceStubSettings.java
@@ -90,6 +90,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ProjectServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ProjectServiceStub.java
index f128e4f61469..419c1c8c697a 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ProjectServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ProjectServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.cloud.retail.v2beta.GetAlertConfigRequest;
 import com.google.cloud.retail.v2beta.UpdateAlertConfigRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ProjectServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ProjectServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ProjectServiceStubSettings.java
index 2b1aa1b23a8c..8c1390db88c8 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ProjectServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ProjectServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/SearchServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/SearchServiceStub.java
index 35dd687f1549..067d37b27dda 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/SearchServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/SearchServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.cloud.retail.v2beta.SearchRequest;
 import com.google.cloud.retail.v2beta.SearchResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SearchServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/SearchServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/SearchServiceStubSettings.java
index 6ec3ebd101a9..969895b70650 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/SearchServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/SearchServiceStubSettings.java
@@ -55,6 +55,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -106,6 +107,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ServingConfigServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ServingConfigServiceStub.java
index a1f80efadd92..43f3da783707 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ServingConfigServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ServingConfigServiceStub.java
@@ -32,6 +32,7 @@
 import com.google.cloud.retail.v2beta.UpdateServingConfigRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ServingConfigServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ServingConfigServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ServingConfigServiceStubSettings.java
index de9463e0c83f..d538f9f7d8fa 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ServingConfigServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/ServingConfigServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/UserEventServiceStub.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/UserEventServiceStub.java
index 1f88679a45d8..a24cfbf03bc9 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/UserEventServiceStub.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/UserEventServiceStub.java
@@ -39,6 +39,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class UserEventServiceStub implements BackgroundResource {
diff --git a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/UserEventServiceStubSettings.java b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/UserEventServiceStubSettings.java
index d91c51259d83..97356d3f299b 100644
--- a/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/UserEventServiceStubSettings.java
+++ b/java-retail/google-cloud-retail/src/main/java/com/google/cloud/retail/v2beta/stub/UserEventServiceStubSettings.java
@@ -65,6 +65,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -142,6 +143,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/AttributesConfigName.java b/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/AttributesConfigName.java
index f82eb16467f6..b5d26320dfe5 100644
--- a/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/AttributesConfigName.java
+++ b/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/AttributesConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AttributesConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG =
diff --git a/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/BranchName.java b/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/BranchName.java
index 70fc64607cf7..81c909bf19bd 100644
--- a/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/BranchName.java
+++ b/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/BranchName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BranchName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_BRANCH =
diff --git a/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/CatalogName.java b/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/CatalogName.java
index 6d4181877abb..21237164f089 100644
--- a/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/CatalogName.java
+++ b/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/CatalogName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CatalogName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG =
diff --git a/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/CompletionConfigName.java b/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/CompletionConfigName.java
index 7023be94a8a3..7d5fdbeae335 100644
--- a/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/CompletionConfigName.java
+++ b/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/CompletionConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompletionConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG =
diff --git a/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/ControlName.java b/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/ControlName.java
index 3a373aae7bdf..9bf86f2ce3ff 100644
--- a/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/ControlName.java
+++ b/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/ControlName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ControlName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_CONTROL =
diff --git a/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/LocationName.java b/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/LocationName.java
index 4f06cc5621db..eb7d165bcfd5 100644
--- a/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/LocationName.java
+++ b/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/ModelName.java b/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/ModelName.java
index 91fb16b14e51..490edb47d997 100644
--- a/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/ModelName.java
+++ b/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/ModelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_MODEL =
diff --git a/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/ProductName.java b/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/ProductName.java
index ab59f4f383c7..36352df09a52 100644
--- a/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/ProductName.java
+++ b/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/ProductName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_BRANCH_PRODUCT =
diff --git a/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/ServingConfigName.java b/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/ServingConfigName.java
index fe879a7ea64f..fc9658150ac2 100644
--- a/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/ServingConfigName.java
+++ b/java-retail/proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/ServingConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServingConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_SERVING_CONFIG =
diff --git a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/AlertConfigName.java b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/AlertConfigName.java
index 929f06e1841c..770d0da6674c 100644
--- a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/AlertConfigName.java
+++ b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/AlertConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AlertConfigName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/AttributesConfigName.java b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/AttributesConfigName.java
index eac127f2a7a4..4695b869ccf3 100644
--- a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/AttributesConfigName.java
+++ b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/AttributesConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AttributesConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG =
diff --git a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/BranchName.java b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/BranchName.java
index 587e2a796c10..1eff6504ce5b 100644
--- a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/BranchName.java
+++ b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/BranchName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BranchName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_BRANCH =
diff --git a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/CatalogName.java b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/CatalogName.java
index 1032f25fe4fd..b597b1960aa5 100644
--- a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/CatalogName.java
+++ b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/CatalogName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CatalogName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG =
diff --git a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/CompletionConfigName.java b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/CompletionConfigName.java
index dc7fd4f4df34..11f5c9051c0f 100644
--- a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/CompletionConfigName.java
+++ b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/CompletionConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompletionConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG =
diff --git a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ControlName.java b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ControlName.java
index d19086d3a56b..1f6dbfa6f5fe 100644
--- a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ControlName.java
+++ b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ControlName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ControlName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_CONTROL =
diff --git a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/LocationName.java b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/LocationName.java
index 16e651222ebc..9308a50fa367 100644
--- a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/LocationName.java
+++ b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/LoggingConfigName.java b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/LoggingConfigName.java
index df8866669ec2..b434ca137909 100644
--- a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/LoggingConfigName.java
+++ b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/LoggingConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LoggingConfigName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/MerchantCenterAccountLinkName.java b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/MerchantCenterAccountLinkName.java
index 91d7395bab90..bf80899228b8 100644
--- a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/MerchantCenterAccountLinkName.java
+++ b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/MerchantCenterAccountLinkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MerchantCenterAccountLinkName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_MERCHANT_CENTER_ACCOUNT_LINK =
diff --git a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ModelName.java b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ModelName.java
index 7292e55d6e19..79994f847a4c 100644
--- a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ModelName.java
+++ b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ModelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_MODEL =
diff --git a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ProductName.java b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ProductName.java
index a918093f53ed..a5fb35b9fc67 100644
--- a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ProductName.java
+++ b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ProductName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_BRANCH_PRODUCT =
diff --git a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ProjectName.java b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ProjectName.java
index dbf0ed656c81..920e23a64fc6 100644
--- a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ProjectName.java
+++ b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/RetailProjectName.java b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/RetailProjectName.java
index add361bf76ac..5741950deb46 100644
--- a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/RetailProjectName.java
+++ b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/RetailProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RetailProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ServingConfigName.java b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ServingConfigName.java
index c81c44eb3a40..a3d8c7a0fda3 100644
--- a/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ServingConfigName.java
+++ b/java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ServingConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServingConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_SERVING_CONFIG =
diff --git a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/AlertConfigName.java b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/AlertConfigName.java
index 29703d712d45..a76c2ba245e0 100644
--- a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/AlertConfigName.java
+++ b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/AlertConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AlertConfigName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/AttributesConfigName.java b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/AttributesConfigName.java
index 78c0835ef674..d9e24718b976 100644
--- a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/AttributesConfigName.java
+++ b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/AttributesConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AttributesConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG =
diff --git a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/BranchName.java b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/BranchName.java
index 8175f7cc1594..ab4bbe3f42e8 100644
--- a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/BranchName.java
+++ b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/BranchName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BranchName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_BRANCH =
diff --git a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/CatalogName.java b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/CatalogName.java
index ba29395e7267..7a638d33223a 100644
--- a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/CatalogName.java
+++ b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/CatalogName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CatalogName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG =
diff --git a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/CompletionConfigName.java b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/CompletionConfigName.java
index 226018b132f2..461fb10bcf2c 100644
--- a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/CompletionConfigName.java
+++ b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/CompletionConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompletionConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG =
diff --git a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/ControlName.java b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/ControlName.java
index 4f8dae5df907..0c62c9b01b71 100644
--- a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/ControlName.java
+++ b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/ControlName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ControlName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_CONTROL =
diff --git a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/LocationName.java b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/LocationName.java
index bfb0c02a4658..3e46c9119c2f 100644
--- a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/LocationName.java
+++ b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/ModelName.java b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/ModelName.java
index 561d735babd4..a41046bc3749 100644
--- a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/ModelName.java
+++ b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/ModelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_MODEL =
diff --git a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/ProductName.java b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/ProductName.java
index 094d91d0acf8..3ca765b17eea 100644
--- a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/ProductName.java
+++ b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/ProductName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_BRANCH_PRODUCT =
diff --git a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/ServingConfigName.java b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/ServingConfigName.java
index 034acd3e4b7a..10f89b1516e4 100644
--- a/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/ServingConfigName.java
+++ b/java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/ServingConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServingConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CATALOG_SERVING_CONFIG =
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/BuildsClient.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/BuildsClient.java
index e2c409c645c3..3b708b3f569c 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/BuildsClient.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/BuildsClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BuildsClient implements BackgroundResource {
   private final BuildsSettings settings;
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/BuildsSettings.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/BuildsSettings.java
index 3db3bc57c751..ad128a3a40ee 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/BuildsSettings.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/BuildsSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BuildsSettings extends ClientSettings<BuildsSettings> {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/ExecutionsClient.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/ExecutionsClient.java
index 9cc0a729f47c..5d4ac31418fa 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/ExecutionsClient.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/ExecutionsClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -199,6 +200,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExecutionsClient implements BackgroundResource {
   private final ExecutionsSettings settings;
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/ExecutionsSettings.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/ExecutionsSettings.java
index f959a493adfd..d4a57e03598a 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/ExecutionsSettings.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/ExecutionsSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExecutionsSettings extends ClientSettings<ExecutionsSettings> {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/InstancesClient.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/InstancesClient.java
index 8670553cbb55..f711a2864ae7 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/InstancesClient.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/InstancesClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -239,6 +240,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstancesClient implements BackgroundResource {
   private final InstancesSettings settings;
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/InstancesSettings.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/InstancesSettings.java
index 72e043651f45..62bd5dd2d0ab 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/InstancesSettings.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/InstancesSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstancesSettings extends ClientSettings<InstancesSettings> {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/JobsClient.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/JobsClient.java
index e93f1fef5378..5b7c53415a76 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/JobsClient.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/JobsClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -285,6 +286,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobsClient implements BackgroundResource {
   private final JobsSettings settings;
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/JobsSettings.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/JobsSettings.java
index 0172b2eb0114..0b67af44e774 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/JobsSettings.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/JobsSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobsSettings extends ClientSettings<JobsSettings> {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/RevisionsClient.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/RevisionsClient.java
index b08840ab96f6..0f8229c6189c 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/RevisionsClient.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/RevisionsClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -179,6 +180,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RevisionsClient implements BackgroundResource {
   private final RevisionsSettings settings;
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/RevisionsSettings.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/RevisionsSettings.java
index c7580ef20826..7134cad25c08 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/RevisionsSettings.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/RevisionsSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RevisionsSettings extends ClientSettings<RevisionsSettings> {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/ServicesClient.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/ServicesClient.java
index 6016a1d29377..07dc9f80a7ab 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/ServicesClient.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/ServicesClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -268,6 +269,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServicesClient implements BackgroundResource {
   private final ServicesSettings settings;
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/ServicesSettings.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/ServicesSettings.java
index 7e6c8eeaca69..8830bcbab7a5 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/ServicesSettings.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/ServicesSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServicesSettings extends ClientSettings<ServicesSettings> {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/TasksClient.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/TasksClient.java
index 64cbb79a8cd2..019b9ea0ae95 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/TasksClient.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/TasksClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TasksClient implements BackgroundResource {
   private final TasksSettings settings;
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/TasksSettings.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/TasksSettings.java
index b5484dd6a9eb..63cb65ffa837 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/TasksSettings.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/TasksSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TasksSettings extends ClientSettings<TasksSettings> {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/WorkerPoolsClient.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/WorkerPoolsClient.java
index b84226eb816d..9845958b6a39 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/WorkerPoolsClient.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/WorkerPoolsClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -268,6 +269,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkerPoolsClient implements BackgroundResource {
   private final WorkerPoolsSettings settings;
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/WorkerPoolsSettings.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/WorkerPoolsSettings.java
index 08c683b828f8..00082aa5d4b5 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/WorkerPoolsSettings.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/WorkerPoolsSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkerPoolsSettings extends ClientSettings<WorkerPoolsSettings> {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/BuildsStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/BuildsStub.java
index 6501d9483e5b..a5ea02ad5671 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/BuildsStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/BuildsStub.java
@@ -21,6 +21,7 @@
 import com.google.cloud.run.v2.SubmitBuildRequest;
 import com.google.cloud.run.v2.SubmitBuildResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BuildsStub implements BackgroundResource {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/BuildsStubSettings.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/BuildsStubSettings.java
index 9d9c6e6b0355..f10769fb8dbc 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/BuildsStubSettings.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/BuildsStubSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -95,6 +96,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BuildsStubSettings extends StubSettings<BuildsStubSettings> {
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/ExecutionsStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/ExecutionsStub.java
index 1ef8512778ad..b00bfa17e05d 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/ExecutionsStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/ExecutionsStub.java
@@ -30,6 +30,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ExecutionsStub implements BackgroundResource {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/ExecutionsStubSettings.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/ExecutionsStubSettings.java
index cd30e165a4cb..460de8728f9e 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/ExecutionsStubSettings.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/ExecutionsStubSettings.java
@@ -64,6 +64,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -139,6 +140,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ExecutionsStubSettings extends StubSettings<ExecutionsStubSettings> {
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcBuildsCallableFactory.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcBuildsCallableFactory.java
index 1f8cf1873abb..053293be8cf9 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcBuildsCallableFactory.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcBuildsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBuildsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcBuildsStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcBuildsStub.java
index e9cf47458cbf..88a3b0d71726 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcBuildsStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcBuildsStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBuildsStub extends BuildsStub {
   private static final MethodDescriptor<SubmitBuildRequest, SubmitBuildResponse>
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcExecutionsCallableFactory.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcExecutionsCallableFactory.java
index 833283150240..ecd12d545a1a 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcExecutionsCallableFactory.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcExecutionsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcExecutionsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcExecutionsStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcExecutionsStub.java
index abc6c0c5615c..bc55c68672a9 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcExecutionsStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcExecutionsStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcExecutionsStub extends ExecutionsStub {
   private static final MethodDescriptor<GetExecutionRequest, Execution>
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcInstancesCallableFactory.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcInstancesCallableFactory.java
index e0c2ce6211f2..dcae734f267d 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcInstancesCallableFactory.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcInstancesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcInstancesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcInstancesStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcInstancesStub.java
index ea6aa1469567..a3bce014691c 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcInstancesStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcInstancesStub.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcInstancesStub extends InstancesStub {
   private static final MethodDescriptor<CreateInstanceRequest, Operation>
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcJobsCallableFactory.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcJobsCallableFactory.java
index 4d7779cbf188..7abeed2dcf7c 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcJobsCallableFactory.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcJobsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcJobsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcJobsStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcJobsStub.java
index 3326ada6ba3a..85bfcb75f943 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcJobsStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcJobsStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcJobsStub extends JobsStub {
   private static final MethodDescriptor<CreateJobRequest, Operation> createJobMethodDescriptor =
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcRevisionsCallableFactory.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcRevisionsCallableFactory.java
index f29957129bfc..228478652c4c 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcRevisionsCallableFactory.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcRevisionsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRevisionsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcRevisionsStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcRevisionsStub.java
index c0a1c0e5eca7..ed6a938b1826 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcRevisionsStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcRevisionsStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRevisionsStub extends RevisionsStub {
   private static final MethodDescriptor<GetRevisionRequest, Revision> getRevisionMethodDescriptor =
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcServicesCallableFactory.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcServicesCallableFactory.java
index a331d2405d2f..1f9cf921e5ce 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcServicesCallableFactory.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcServicesCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServicesCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcServicesStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcServicesStub.java
index ef2c4a7b3283..5790ecfea90c 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcServicesStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcServicesStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServicesStub extends ServicesStub {
   private static final MethodDescriptor<CreateServiceRequest, Operation>
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcTasksCallableFactory.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcTasksCallableFactory.java
index a35af95dc64b..86bdb9d99d0d 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcTasksCallableFactory.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcTasksCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTasksCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcTasksStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcTasksStub.java
index 03e27d491444..a793ae9b6bc9 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcTasksStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcTasksStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTasksStub extends TasksStub {
   private static final MethodDescriptor<GetTaskRequest, Task> getTaskMethodDescriptor =
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcWorkerPoolsCallableFactory.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcWorkerPoolsCallableFactory.java
index 764409373a6d..3653c99a5bc3 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcWorkerPoolsCallableFactory.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcWorkerPoolsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWorkerPoolsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcWorkerPoolsStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcWorkerPoolsStub.java
index e63b9cd16577..2f379b52980c 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcWorkerPoolsStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/GrpcWorkerPoolsStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWorkerPoolsStub extends WorkerPoolsStub {
   private static final MethodDescriptor<CreateWorkerPoolRequest, Operation>
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonBuildsCallableFactory.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonBuildsCallableFactory.java
index e1fdb23b6873..a1b9e9ad08ca 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonBuildsCallableFactory.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonBuildsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBuildsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonBuildsStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonBuildsStub.java
index e6bd8cad5ca2..1f55bf6c0631 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonBuildsStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonBuildsStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBuildsStub extends BuildsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonExecutionsCallableFactory.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonExecutionsCallableFactory.java
index 237bbc3c0351..2b3d50a4d369 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonExecutionsCallableFactory.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonExecutionsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonExecutionsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonExecutionsStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonExecutionsStub.java
index 8ddfb83b0970..310d4d7602cb 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonExecutionsStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonExecutionsStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonExecutionsStub extends ExecutionsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonInstancesCallableFactory.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonInstancesCallableFactory.java
index d9af35e1ded8..4527a66eb489 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonInstancesCallableFactory.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonInstancesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstancesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonInstancesStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonInstancesStub.java
index 1e8c7fc6dc93..cbfb28c428f8 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonInstancesStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonInstancesStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstancesStub extends InstancesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonJobsCallableFactory.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonJobsCallableFactory.java
index 2e22fafd2639..ae6a5b67480f 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonJobsCallableFactory.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonJobsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonJobsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonJobsStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonJobsStub.java
index 719776218c02..8a43762d520e 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonJobsStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonJobsStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonJobsStub extends JobsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonRevisionsCallableFactory.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonRevisionsCallableFactory.java
index 1c74ec2b2de7..8b6799da8810 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonRevisionsCallableFactory.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonRevisionsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRevisionsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonRevisionsStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonRevisionsStub.java
index fd2cb81f20b5..6e8eaa01da18 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonRevisionsStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonRevisionsStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRevisionsStub extends RevisionsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonServicesCallableFactory.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonServicesCallableFactory.java
index 35b67ec12f67..1f2bf3ab7f13 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonServicesCallableFactory.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonServicesCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServicesCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonServicesStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonServicesStub.java
index d39a42139643..d417f0acf930 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonServicesStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonServicesStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServicesStub extends ServicesStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonTasksCallableFactory.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonTasksCallableFactory.java
index e189d9c6fd86..0731b2aa6599 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonTasksCallableFactory.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonTasksCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTasksCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonTasksStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonTasksStub.java
index 9839e02c1cbc..82b7e072f8be 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonTasksStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonTasksStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTasksStub extends TasksStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonWorkerPoolsCallableFactory.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonWorkerPoolsCallableFactory.java
index dd60dd2d156a..eb23903f1a0c 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonWorkerPoolsCallableFactory.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonWorkerPoolsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWorkerPoolsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonWorkerPoolsStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonWorkerPoolsStub.java
index e10a23c5d6de..1fe34e1d86bd 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonWorkerPoolsStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/HttpJsonWorkerPoolsStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWorkerPoolsStub extends WorkerPoolsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/InstancesStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/InstancesStub.java
index 1264a9a9eb9a..bcd9784149cd 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/InstancesStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/InstancesStub.java
@@ -32,6 +32,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InstancesStub implements BackgroundResource {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/InstancesStubSettings.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/InstancesStubSettings.java
index 2395c95c9639..5abc480f1505 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/InstancesStubSettings.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/InstancesStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InstancesStubSettings extends StubSettings<InstancesStubSettings> {
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/JobsStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/JobsStub.java
index 35707f45bc55..55291243fbcb 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/JobsStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/JobsStub.java
@@ -38,6 +38,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class JobsStub implements BackgroundResource {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/JobsStubSettings.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/JobsStubSettings.java
index aa54098cc62f..3120c7ffadb3 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/JobsStubSettings.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/JobsStubSettings.java
@@ -72,6 +72,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class JobsStubSettings extends StubSettings<JobsStubSettings> {
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/RevisionsStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/RevisionsStub.java
index be6e55cdf03d..0440019384fc 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/RevisionsStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/RevisionsStub.java
@@ -29,6 +29,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RevisionsStub implements BackgroundResource {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/RevisionsStubSettings.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/RevisionsStubSettings.java
index 0be196e8fc9d..bcb41397bd22 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/RevisionsStubSettings.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/RevisionsStubSettings.java
@@ -63,6 +63,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -138,6 +139,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RevisionsStubSettings extends StubSettings<RevisionsStubSettings> {
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/ServicesStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/ServicesStub.java
index b80797f4bace..5308811384a7 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/ServicesStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/ServicesStub.java
@@ -36,6 +36,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ServicesStub implements BackgroundResource {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/ServicesStubSettings.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/ServicesStubSettings.java
index 649bafed47fb..dd2e5c8d0129 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/ServicesStubSettings.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/ServicesStubSettings.java
@@ -70,6 +70,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ServicesStubSettings extends StubSettings<ServicesStubSettings> {
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/TasksStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/TasksStub.java
index 3608c62b31fb..525f6d959b05 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/TasksStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/TasksStub.java
@@ -25,6 +25,7 @@
 import com.google.cloud.run.v2.ListTasksResponse;
 import com.google.cloud.run.v2.Task;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TasksStub implements BackgroundResource {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/TasksStubSettings.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/TasksStubSettings.java
index d8f1065a9c3d..d6e5bb5e6862 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/TasksStubSettings.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/TasksStubSettings.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -106,6 +107,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TasksStubSettings extends StubSettings<TasksStubSettings> {
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/WorkerPoolsStub.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/WorkerPoolsStub.java
index 18a494734a80..950ebd31db52 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/WorkerPoolsStub.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/WorkerPoolsStub.java
@@ -36,6 +36,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class WorkerPoolsStub implements BackgroundResource {
 
diff --git a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/WorkerPoolsStubSettings.java b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/WorkerPoolsStubSettings.java
index 426e049732ed..550d78481034 100644
--- a/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/WorkerPoolsStubSettings.java
+++ b/java-run/google-cloud-run/src/main/java/com/google/cloud/run/v2/stub/WorkerPoolsStubSettings.java
@@ -70,6 +70,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class WorkerPoolsStubSettings extends StubSettings<WorkerPoolsStubSettings> {
diff --git a/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/BuildWorkerPoolName.java b/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/BuildWorkerPoolName.java
index b75174dd464a..adc9911bd1a3 100644
--- a/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/BuildWorkerPoolName.java
+++ b/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/BuildWorkerPoolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BuildWorkerPoolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WORKER_POOL =
diff --git a/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/ExecutionName.java b/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/ExecutionName.java
index 4f850bdc9f82..e789c80b3b89 100644
--- a/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/ExecutionName.java
+++ b/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/ExecutionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExecutionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_JOB_EXECUTION =
diff --git a/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/InstanceName.java b/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/InstanceName.java
index 04a8d2ac9f5a..50fc201f3ff0 100644
--- a/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/InstanceName.java
+++ b/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/JobName.java b/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/JobName.java
index 491a0e2de026..c69d56dc586f 100644
--- a/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/JobName.java
+++ b/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/JobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_JOB =
diff --git a/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/LocationName.java b/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/LocationName.java
index 4dbef7d1ae63..39815fb17299 100644
--- a/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/LocationName.java
+++ b/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/RevisionName.java b/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/RevisionName.java
index b7a1f13166d5..306c0e31c828 100644
--- a/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/RevisionName.java
+++ b/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/RevisionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RevisionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE_REVISION =
diff --git a/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/ServiceName.java b/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/ServiceName.java
index 67f6b4d76e5e..967de72d4acd 100644
--- a/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/ServiceName.java
+++ b/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/ServiceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE =
diff --git a/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/TaskName.java b/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/TaskName.java
index 492af8c3f28e..6a70fe51a407 100644
--- a/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/TaskName.java
+++ b/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/TaskName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TaskName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_JOB_EXECUTION_TASK =
diff --git a/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/WorkerPoolName.java b/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/WorkerPoolName.java
index 623dab8a3f52..f97d568276dc 100644
--- a/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/WorkerPoolName.java
+++ b/java-run/proto-google-cloud-run-v2/src/main/java/com/google/cloud/run/v2/WorkerPoolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkerPoolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WORKER_POOL =
diff --git a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasDeploymentsClient.java b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasDeploymentsClient.java
index c25466b8ccb1..62e4ca767803 100644
--- a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasDeploymentsClient.java
+++ b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasDeploymentsClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -728,6 +729,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SaasDeploymentsClient implements BackgroundResource {
diff --git a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasDeploymentsSettings.java b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasDeploymentsSettings.java
index 0c1a9ec6bbb5..8c16e635f221 100644
--- a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasDeploymentsSettings.java
+++ b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasDeploymentsSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SaasDeploymentsSettings extends ClientSettings<SaasDeploymentsSettings> {
diff --git a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasRolloutsClient.java b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasRolloutsClient.java
index e33081de5fb1..efa23d2ed18c 100644
--- a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasRolloutsClient.java
+++ b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasRolloutsClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -343,6 +344,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SaasRolloutsClient implements BackgroundResource {
diff --git a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasRolloutsSettings.java b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasRolloutsSettings.java
index 21c46d563beb..ce77e8b20631 100644
--- a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasRolloutsSettings.java
+++ b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasRolloutsSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SaasRolloutsSettings extends ClientSettings<SaasRolloutsSettings> {
diff --git a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/GrpcSaasDeploymentsCallableFactory.java b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/GrpcSaasDeploymentsCallableFactory.java
index 95bd8a3b5f37..63fdaaec0744 100644
--- a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/GrpcSaasDeploymentsCallableFactory.java
+++ b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/GrpcSaasDeploymentsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSaasDeploymentsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/GrpcSaasDeploymentsStub.java b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/GrpcSaasDeploymentsStub.java
index bb14393dccdc..eb9ce66032ee 100644
--- a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/GrpcSaasDeploymentsStub.java
+++ b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/GrpcSaasDeploymentsStub.java
@@ -85,6 +85,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSaasDeploymentsStub extends SaasDeploymentsStub {
diff --git a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/GrpcSaasRolloutsCallableFactory.java b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/GrpcSaasRolloutsCallableFactory.java
index 2e3af45fac40..d0967e54603d 100644
--- a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/GrpcSaasRolloutsCallableFactory.java
+++ b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/GrpcSaasRolloutsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSaasRolloutsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/GrpcSaasRolloutsStub.java b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/GrpcSaasRolloutsStub.java
index 07fccdb940d7..8812936979de 100644
--- a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/GrpcSaasRolloutsStub.java
+++ b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/GrpcSaasRolloutsStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSaasRolloutsStub extends SaasRolloutsStub {
diff --git a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/HttpJsonSaasDeploymentsCallableFactory.java b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/HttpJsonSaasDeploymentsCallableFactory.java
index 98b1aaf7507e..2b3706fd5a3a 100644
--- a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/HttpJsonSaasDeploymentsCallableFactory.java
+++ b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/HttpJsonSaasDeploymentsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSaasDeploymentsCallableFactory
diff --git a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/HttpJsonSaasDeploymentsStub.java b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/HttpJsonSaasDeploymentsStub.java
index d793395abafc..42986c0dbe38 100644
--- a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/HttpJsonSaasDeploymentsStub.java
+++ b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/HttpJsonSaasDeploymentsStub.java
@@ -92,6 +92,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSaasDeploymentsStub extends SaasDeploymentsStub {
diff --git a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/HttpJsonSaasRolloutsCallableFactory.java b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/HttpJsonSaasRolloutsCallableFactory.java
index e7476636cd20..1c7434b00ec7 100644
--- a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/HttpJsonSaasRolloutsCallableFactory.java
+++ b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/HttpJsonSaasRolloutsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSaasRolloutsCallableFactory
diff --git a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/HttpJsonSaasRolloutsStub.java b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/HttpJsonSaasRolloutsStub.java
index 4b13bc2fbfa7..c6d044f60ead 100644
--- a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/HttpJsonSaasRolloutsStub.java
+++ b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/HttpJsonSaasRolloutsStub.java
@@ -60,6 +60,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSaasRolloutsStub extends SaasRolloutsStub {
diff --git a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/SaasDeploymentsStub.java b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/SaasDeploymentsStub.java
index e8724dc7f0be..0777831bd4fc 100644
--- a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/SaasDeploymentsStub.java
+++ b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/SaasDeploymentsStub.java
@@ -75,6 +75,7 @@
 import com.google.cloud.saasplatform.saasservicemgmt.v1beta1.UpdateUnitRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SaasDeploymentsStub implements BackgroundResource {
diff --git a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/SaasDeploymentsStubSettings.java b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/SaasDeploymentsStubSettings.java
index 29b72d317076..698ea5f02eb8 100644
--- a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/SaasDeploymentsStubSettings.java
+++ b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/SaasDeploymentsStubSettings.java
@@ -106,6 +106,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -158,6 +159,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/SaasRolloutsStub.java b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/SaasRolloutsStub.java
index ebb656d1a64c..7447cb1f7af3 100644
--- a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/SaasRolloutsStub.java
+++ b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/SaasRolloutsStub.java
@@ -43,6 +43,7 @@
 import com.google.cloud.saasplatform.saasservicemgmt.v1beta1.UpdateRolloutRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SaasRolloutsStub implements BackgroundResource {
diff --git a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/SaasRolloutsStubSettings.java b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/SaasRolloutsStubSettings.java
index 95ef6e91f7fb..bd4df0e74c5b 100644
--- a/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/SaasRolloutsStubSettings.java
+++ b/java-saasservicemgmt/google-cloud-saasservicemgmt/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/stub/SaasRolloutsStubSettings.java
@@ -74,6 +74,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/LocationName.java b/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/LocationName.java
index ecab486bdf7e..6684ca737fdd 100644
--- a/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/LocationName.java
+++ b/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/ReleaseName.java b/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/ReleaseName.java
index 7bc40a846636..fa4462e0a35b 100644
--- a/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/ReleaseName.java
+++ b/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/ReleaseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReleaseName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RELEASE =
diff --git a/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/RolloutKindName.java b/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/RolloutKindName.java
index ffc8bcaee73e..42b2b18f4390 100644
--- a/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/RolloutKindName.java
+++ b/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/RolloutKindName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RolloutKindName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ROLLOUT_KIND_ID =
diff --git a/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/RolloutName.java b/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/RolloutName.java
index 8d39e31b2c79..07891f1a871f 100644
--- a/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/RolloutName.java
+++ b/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/RolloutName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RolloutName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ROLLOUT_ID =
diff --git a/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasName.java b/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasName.java
index aeb00ef9fb15..19fa23dd84c6 100644
--- a/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasName.java
+++ b/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/SaasName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SaasName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SAAS =
diff --git a/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/TenantName.java b/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/TenantName.java
index ed69b727d509..1f675b4b804e 100644
--- a/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/TenantName.java
+++ b/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/TenantName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TenantName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TENANT =
diff --git a/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/UnitKindName.java b/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/UnitKindName.java
index e621cb37f374..b8f669a5d063 100644
--- a/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/UnitKindName.java
+++ b/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/UnitKindName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UnitKindName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_UNITKIND =
diff --git a/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/UnitName.java b/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/UnitName.java
index 81301c0535f5..6e320a01b7d6 100644
--- a/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/UnitName.java
+++ b/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/UnitName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UnitName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_UNIT =
diff --git a/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/UnitOperationName.java b/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/UnitOperationName.java
index 0faf105f4a8e..226ed3076854 100644
--- a/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/UnitOperationName.java
+++ b/java-saasservicemgmt/proto-google-cloud-saasservicemgmt-v1beta1/src/main/java/com/google/cloud/saasplatform/saasservicemgmt/v1beta1/UnitOperationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UnitOperationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_UNITOPERATION =
diff --git a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/CloudSchedulerClient.java b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/CloudSchedulerClient.java
index f98702a61eda..a0f616dd6102 100644
--- a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/CloudSchedulerClient.java
+++ b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/CloudSchedulerClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -309,6 +310,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudSchedulerClient implements BackgroundResource {
   private final CloudSchedulerSettings settings;
diff --git a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/CloudSchedulerSettings.java b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/CloudSchedulerSettings.java
index b2a24c5fac2f..ce0d61c1e3cf 100644
--- a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/CloudSchedulerSettings.java
+++ b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/CloudSchedulerSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudSchedulerSettings extends ClientSettings<CloudSchedulerSettings> {
 
diff --git a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/CloudSchedulerStub.java b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/CloudSchedulerStub.java
index 684dbf700688..ed545eb63959 100644
--- a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/CloudSchedulerStub.java
+++ b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/CloudSchedulerStub.java
@@ -37,6 +37,7 @@
 import com.google.cloud.scheduler.v1.UpdateJobRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CloudSchedulerStub implements BackgroundResource {
 
diff --git a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/CloudSchedulerStubSettings.java b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/CloudSchedulerStubSettings.java
index 7fdf0d7b3e34..a79dc107fd90 100644
--- a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/CloudSchedulerStubSettings.java
+++ b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/CloudSchedulerStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CloudSchedulerStubSettings extends StubSettings<CloudSchedulerStubSettings> {
diff --git a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/GrpcCloudSchedulerCallableFactory.java b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/GrpcCloudSchedulerCallableFactory.java
index 21262074dab7..97c693133616 100644
--- a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/GrpcCloudSchedulerCallableFactory.java
+++ b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/GrpcCloudSchedulerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudSchedulerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/GrpcCloudSchedulerStub.java b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/GrpcCloudSchedulerStub.java
index d3bb0a1ba855..e120d0cd1188 100644
--- a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/GrpcCloudSchedulerStub.java
+++ b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/GrpcCloudSchedulerStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudSchedulerStub extends CloudSchedulerStub {
   private static final MethodDescriptor<ListJobsRequest, ListJobsResponse>
diff --git a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/HttpJsonCloudSchedulerCallableFactory.java b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/HttpJsonCloudSchedulerCallableFactory.java
index d4c47e0f5e37..35656de94b72 100644
--- a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/HttpJsonCloudSchedulerCallableFactory.java
+++ b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/HttpJsonCloudSchedulerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudSchedulerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/HttpJsonCloudSchedulerStub.java b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/HttpJsonCloudSchedulerStub.java
index 8c9b92a0f451..151a77b5f4de 100644
--- a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/HttpJsonCloudSchedulerStub.java
+++ b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1/stub/HttpJsonCloudSchedulerStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudSchedulerStub extends CloudSchedulerStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/CloudSchedulerClient.java b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/CloudSchedulerClient.java
index 5a2eeaad5224..813fc721ab48 100644
--- a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/CloudSchedulerClient.java
+++ b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/CloudSchedulerClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -310,6 +311,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudSchedulerClient implements BackgroundResource {
diff --git a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/CloudSchedulerSettings.java b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/CloudSchedulerSettings.java
index 962877e2dcbc..9d061bd60e2a 100644
--- a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/CloudSchedulerSettings.java
+++ b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/CloudSchedulerSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudSchedulerSettings extends ClientSettings<CloudSchedulerSettings> {
diff --git a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/CloudSchedulerStub.java b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/CloudSchedulerStub.java
index ff25c5204d84..9d97218bc029 100644
--- a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/CloudSchedulerStub.java
+++ b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/CloudSchedulerStub.java
@@ -38,6 +38,7 @@
 import com.google.cloud.scheduler.v1beta1.UpdateJobRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CloudSchedulerStub implements BackgroundResource {
diff --git a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/CloudSchedulerStubSettings.java b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/CloudSchedulerStubSettings.java
index 6d48fb444ec6..f7a691c22aec 100644
--- a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/CloudSchedulerStubSettings.java
+++ b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/CloudSchedulerStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/GrpcCloudSchedulerCallableFactory.java b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/GrpcCloudSchedulerCallableFactory.java
index a9af7b5cc9ec..e3857347491b 100644
--- a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/GrpcCloudSchedulerCallableFactory.java
+++ b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/GrpcCloudSchedulerCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudSchedulerCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/GrpcCloudSchedulerStub.java b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/GrpcCloudSchedulerStub.java
index bd682245bd30..625572638fdb 100644
--- a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/GrpcCloudSchedulerStub.java
+++ b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/GrpcCloudSchedulerStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudSchedulerStub extends CloudSchedulerStub {
diff --git a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/HttpJsonCloudSchedulerCallableFactory.java b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/HttpJsonCloudSchedulerCallableFactory.java
index e847ede696b2..7ddc091aab14 100644
--- a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/HttpJsonCloudSchedulerCallableFactory.java
+++ b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/HttpJsonCloudSchedulerCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudSchedulerCallableFactory
diff --git a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/HttpJsonCloudSchedulerStub.java b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/HttpJsonCloudSchedulerStub.java
index 9b62e6fad57c..165f912cd1a6 100644
--- a/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/HttpJsonCloudSchedulerStub.java
+++ b/java-scheduler/google-cloud-scheduler/src/main/java/com/google/cloud/scheduler/v1beta1/stub/HttpJsonCloudSchedulerStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudSchedulerStub extends CloudSchedulerStub {
diff --git a/java-scheduler/proto-google-cloud-scheduler-v1/src/main/java/com/google/cloud/scheduler/v1/JobName.java b/java-scheduler/proto-google-cloud-scheduler-v1/src/main/java/com/google/cloud/scheduler/v1/JobName.java
index 6459cae7e427..832eec9b25d0 100644
--- a/java-scheduler/proto-google-cloud-scheduler-v1/src/main/java/com/google/cloud/scheduler/v1/JobName.java
+++ b/java-scheduler/proto-google-cloud-scheduler-v1/src/main/java/com/google/cloud/scheduler/v1/JobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_JOB =
diff --git a/java-scheduler/proto-google-cloud-scheduler-v1/src/main/java/com/google/cloud/scheduler/v1/LocationName.java b/java-scheduler/proto-google-cloud-scheduler-v1/src/main/java/com/google/cloud/scheduler/v1/LocationName.java
index 8d9c3d5ad4bc..198f577f72bb 100644
--- a/java-scheduler/proto-google-cloud-scheduler-v1/src/main/java/com/google/cloud/scheduler/v1/LocationName.java
+++ b/java-scheduler/proto-google-cloud-scheduler-v1/src/main/java/com/google/cloud/scheduler/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-scheduler/proto-google-cloud-scheduler-v1beta1/src/main/java/com/google/cloud/scheduler/v1beta1/JobName.java b/java-scheduler/proto-google-cloud-scheduler-v1beta1/src/main/java/com/google/cloud/scheduler/v1beta1/JobName.java
index 6ddf250bd6e3..911ad025f4e7 100644
--- a/java-scheduler/proto-google-cloud-scheduler-v1beta1/src/main/java/com/google/cloud/scheduler/v1beta1/JobName.java
+++ b/java-scheduler/proto-google-cloud-scheduler-v1beta1/src/main/java/com/google/cloud/scheduler/v1beta1/JobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_JOB =
diff --git a/java-scheduler/proto-google-cloud-scheduler-v1beta1/src/main/java/com/google/cloud/scheduler/v1beta1/LocationName.java b/java-scheduler/proto-google-cloud-scheduler-v1beta1/src/main/java/com/google/cloud/scheduler/v1beta1/LocationName.java
index 3e383318eedf..4d87de12e5fc 100644
--- a/java-scheduler/proto-google-cloud-scheduler-v1beta1/src/main/java/com/google/cloud/scheduler/v1beta1/LocationName.java
+++ b/java-scheduler/proto-google-cloud-scheduler-v1beta1/src/main/java/com/google/cloud/scheduler/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/SecretManagerServiceClient.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/SecretManagerServiceClient.java
index aee44385309d..72a118a191ca 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/SecretManagerServiceClient.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/SecretManagerServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -418,6 +419,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecretManagerServiceClient implements BackgroundResource {
   private final SecretManagerServiceSettings settings;
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/SecretManagerServiceSettings.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/SecretManagerServiceSettings.java
index 6b5cd520a61b..3f95d9eb5a94 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/SecretManagerServiceSettings.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/SecretManagerServiceSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -93,6 +94,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecretManagerServiceSettings extends ClientSettings<SecretManagerServiceSettings> {
 
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/GrpcSecretManagerServiceCallableFactory.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/GrpcSecretManagerServiceCallableFactory.java
index a55763ceab7d..c58b9a59c8a4 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/GrpcSecretManagerServiceCallableFactory.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/GrpcSecretManagerServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSecretManagerServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/GrpcSecretManagerServiceStub.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/GrpcSecretManagerServiceStub.java
index af50c494b61b..793266687823 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/GrpcSecretManagerServiceStub.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/GrpcSecretManagerServiceStub.java
@@ -55,6 +55,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSecretManagerServiceStub extends SecretManagerServiceStub {
   private static final MethodDescriptor<ListSecretsRequest, ListSecretsResponse>
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/HttpJsonSecretManagerServiceCallableFactory.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/HttpJsonSecretManagerServiceCallableFactory.java
index fc0c7f795d4a..20a7efc358a9 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/HttpJsonSecretManagerServiceCallableFactory.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/HttpJsonSecretManagerServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSecretManagerServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/HttpJsonSecretManagerServiceStub.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/HttpJsonSecretManagerServiceStub.java
index 3e194f796862..a8eed61e30a5 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/HttpJsonSecretManagerServiceStub.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/HttpJsonSecretManagerServiceStub.java
@@ -62,6 +62,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSecretManagerServiceStub extends SecretManagerServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/SecretManagerServiceStub.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/SecretManagerServiceStub.java
index 050f5304c38d..76911baf16e3 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/SecretManagerServiceStub.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/SecretManagerServiceStub.java
@@ -45,6 +45,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SecretManagerServiceStub implements BackgroundResource {
 
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/SecretManagerServiceStubSettings.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/SecretManagerServiceStubSettings.java
index 458335813468..097a9ca6e298 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/SecretManagerServiceStubSettings.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/SecretManagerServiceStubSettings.java
@@ -77,6 +77,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SecretManagerServiceStubSettings
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/SecretManagerServiceClient.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/SecretManagerServiceClient.java
index 301c5eb750eb..3753deeb5318 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/SecretManagerServiceClient.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/SecretManagerServiceClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -450,6 +451,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SecretManagerServiceClient implements BackgroundResource {
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/SecretManagerServiceSettings.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/SecretManagerServiceSettings.java
index 9175423beacb..c9d48cf8e6b6 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/SecretManagerServiceSettings.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/SecretManagerServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SecretManagerServiceSettings extends ClientSettings<SecretManagerServiceSettings> {
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/GrpcSecretManagerServiceCallableFactory.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/GrpcSecretManagerServiceCallableFactory.java
index ca6ab401d92d..9f9f606e2f10 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/GrpcSecretManagerServiceCallableFactory.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/GrpcSecretManagerServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSecretManagerServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/GrpcSecretManagerServiceStub.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/GrpcSecretManagerServiceStub.java
index ddfa4059c758..a99dea8288a0 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/GrpcSecretManagerServiceStub.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/GrpcSecretManagerServiceStub.java
@@ -61,6 +61,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSecretManagerServiceStub extends SecretManagerServiceStub {
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/HttpJsonSecretManagerServiceCallableFactory.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/HttpJsonSecretManagerServiceCallableFactory.java
index ef18ef403dbd..960bc62dfb50 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/HttpJsonSecretManagerServiceCallableFactory.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/HttpJsonSecretManagerServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSecretManagerServiceCallableFactory
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/HttpJsonSecretManagerServiceStub.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/HttpJsonSecretManagerServiceStub.java
index 74f19390af4d..b9ed069274ea 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/HttpJsonSecretManagerServiceStub.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/HttpJsonSecretManagerServiceStub.java
@@ -68,6 +68,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSecretManagerServiceStub extends SecretManagerServiceStub {
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/SecretManagerServiceStub.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/SecretManagerServiceStub.java
index 03e6a600f7cf..a899a1af1e07 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/SecretManagerServiceStub.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/SecretManagerServiceStub.java
@@ -51,6 +51,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SecretManagerServiceStub implements BackgroundResource {
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/SecretManagerServiceStubSettings.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/SecretManagerServiceStubSettings.java
index e4e15a03e858..9620ca4892b1 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/SecretManagerServiceStubSettings.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta1/stub/SecretManagerServiceStubSettings.java
@@ -82,6 +82,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -134,6 +135,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/SecretManagerServiceClient.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/SecretManagerServiceClient.java
index 09423386ab59..75e756705db1 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/SecretManagerServiceClient.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/SecretManagerServiceClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -452,6 +453,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SecretManagerServiceClient implements BackgroundResource {
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/SecretManagerServiceSettings.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/SecretManagerServiceSettings.java
index 5bf5b4b6b0e2..64bfb9ec6fa5 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/SecretManagerServiceSettings.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/SecretManagerServiceSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SecretManagerServiceSettings extends ClientSettings<SecretManagerServiceSettings> {
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/GrpcSecretManagerServiceCallableFactory.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/GrpcSecretManagerServiceCallableFactory.java
index a70857fca861..147a4260dae5 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/GrpcSecretManagerServiceCallableFactory.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/GrpcSecretManagerServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSecretManagerServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/GrpcSecretManagerServiceStub.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/GrpcSecretManagerServiceStub.java
index 4df824335457..c58268cc5fa5 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/GrpcSecretManagerServiceStub.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/GrpcSecretManagerServiceStub.java
@@ -61,6 +61,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSecretManagerServiceStub extends SecretManagerServiceStub {
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/HttpJsonSecretManagerServiceCallableFactory.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/HttpJsonSecretManagerServiceCallableFactory.java
index bdc420555229..73f4a4b8fe77 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/HttpJsonSecretManagerServiceCallableFactory.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/HttpJsonSecretManagerServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSecretManagerServiceCallableFactory
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/HttpJsonSecretManagerServiceStub.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/HttpJsonSecretManagerServiceStub.java
index 05b916dd87f0..2e56c6c00c53 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/HttpJsonSecretManagerServiceStub.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/HttpJsonSecretManagerServiceStub.java
@@ -68,6 +68,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSecretManagerServiceStub extends SecretManagerServiceStub {
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/SecretManagerServiceStub.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/SecretManagerServiceStub.java
index c01d5025a1bc..1d78e0b947f2 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/SecretManagerServiceStub.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/SecretManagerServiceStub.java
@@ -51,6 +51,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SecretManagerServiceStub implements BackgroundResource {
diff --git a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/SecretManagerServiceStubSettings.java b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/SecretManagerServiceStubSettings.java
index ce09f3b22d22..6dfc057b1a00 100644
--- a/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/SecretManagerServiceStubSettings.java
+++ b/java-secretmanager/google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1beta2/stub/SecretManagerServiceStubSettings.java
@@ -82,6 +82,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -134,6 +135,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-secretmanager/proto-google-cloud-secretmanager-v1/src/main/java/com/google/cloud/secretmanager/v1/LocationName.java b/java-secretmanager/proto-google-cloud-secretmanager-v1/src/main/java/com/google/cloud/secretmanager/v1/LocationName.java
index ae47848377f7..849a98af73cc 100644
--- a/java-secretmanager/proto-google-cloud-secretmanager-v1/src/main/java/com/google/cloud/secretmanager/v1/LocationName.java
+++ b/java-secretmanager/proto-google-cloud-secretmanager-v1/src/main/java/com/google/cloud/secretmanager/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-secretmanager/proto-google-cloud-secretmanager-v1/src/main/java/com/google/cloud/secretmanager/v1/ProjectName.java b/java-secretmanager/proto-google-cloud-secretmanager-v1/src/main/java/com/google/cloud/secretmanager/v1/ProjectName.java
index 9752c5345a29..1d13d652e5c8 100644
--- a/java-secretmanager/proto-google-cloud-secretmanager-v1/src/main/java/com/google/cloud/secretmanager/v1/ProjectName.java
+++ b/java-secretmanager/proto-google-cloud-secretmanager-v1/src/main/java/com/google/cloud/secretmanager/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-secretmanager/proto-google-cloud-secretmanager-v1/src/main/java/com/google/cloud/secretmanager/v1/SecretName.java b/java-secretmanager/proto-google-cloud-secretmanager-v1/src/main/java/com/google/cloud/secretmanager/v1/SecretName.java
index bab05de5d9cf..018fbfec0ea7 100644
--- a/java-secretmanager/proto-google-cloud-secretmanager-v1/src/main/java/com/google/cloud/secretmanager/v1/SecretName.java
+++ b/java-secretmanager/proto-google-cloud-secretmanager-v1/src/main/java/com/google/cloud/secretmanager/v1/SecretName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecretName implements ResourceName {
   private static final PathTemplate PROJECT_SECRET =
diff --git a/java-secretmanager/proto-google-cloud-secretmanager-v1/src/main/java/com/google/cloud/secretmanager/v1/SecretVersionName.java b/java-secretmanager/proto-google-cloud-secretmanager-v1/src/main/java/com/google/cloud/secretmanager/v1/SecretVersionName.java
index c9ad11a30bee..84635ceb00c5 100644
--- a/java-secretmanager/proto-google-cloud-secretmanager-v1/src/main/java/com/google/cloud/secretmanager/v1/SecretVersionName.java
+++ b/java-secretmanager/proto-google-cloud-secretmanager-v1/src/main/java/com/google/cloud/secretmanager/v1/SecretVersionName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecretVersionName implements ResourceName {
   private static final PathTemplate PROJECT_SECRET_SECRET_VERSION =
diff --git a/java-secretmanager/proto-google-cloud-secretmanager-v1beta1/src/main/java/com/google/cloud/secretmanager/v1beta1/ProjectName.java b/java-secretmanager/proto-google-cloud-secretmanager-v1beta1/src/main/java/com/google/cloud/secretmanager/v1beta1/ProjectName.java
index 16b8067a9dca..ebdf28258adc 100644
--- a/java-secretmanager/proto-google-cloud-secretmanager-v1beta1/src/main/java/com/google/cloud/secretmanager/v1beta1/ProjectName.java
+++ b/java-secretmanager/proto-google-cloud-secretmanager-v1beta1/src/main/java/com/google/cloud/secretmanager/v1beta1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-secretmanager/proto-google-cloud-secretmanager-v1beta1/src/main/java/com/google/cloud/secretmanager/v1beta1/SecretName.java b/java-secretmanager/proto-google-cloud-secretmanager-v1beta1/src/main/java/com/google/cloud/secretmanager/v1beta1/SecretName.java
index 567cf1341661..b6cb45a6f398 100644
--- a/java-secretmanager/proto-google-cloud-secretmanager-v1beta1/src/main/java/com/google/cloud/secretmanager/v1beta1/SecretName.java
+++ b/java-secretmanager/proto-google-cloud-secretmanager-v1beta1/src/main/java/com/google/cloud/secretmanager/v1beta1/SecretName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecretName implements ResourceName {
   private static final PathTemplate PROJECT_SECRET =
diff --git a/java-secretmanager/proto-google-cloud-secretmanager-v1beta1/src/main/java/com/google/cloud/secretmanager/v1beta1/SecretVersionName.java b/java-secretmanager/proto-google-cloud-secretmanager-v1beta1/src/main/java/com/google/cloud/secretmanager/v1beta1/SecretVersionName.java
index f4ac393d2ac1..54a9839472d2 100644
--- a/java-secretmanager/proto-google-cloud-secretmanager-v1beta1/src/main/java/com/google/cloud/secretmanager/v1beta1/SecretVersionName.java
+++ b/java-secretmanager/proto-google-cloud-secretmanager-v1beta1/src/main/java/com/google/cloud/secretmanager/v1beta1/SecretVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecretVersionName implements ResourceName {
   private static final PathTemplate PROJECT_SECRET_SECRET_VERSION =
diff --git a/java-secretmanager/proto-google-cloud-secretmanager-v1beta2/src/main/java/com/google/cloud/secretmanager/v1beta2/LocationName.java b/java-secretmanager/proto-google-cloud-secretmanager-v1beta2/src/main/java/com/google/cloud/secretmanager/v1beta2/LocationName.java
index bd14d128c3e9..d09f5fddc0d0 100644
--- a/java-secretmanager/proto-google-cloud-secretmanager-v1beta2/src/main/java/com/google/cloud/secretmanager/v1beta2/LocationName.java
+++ b/java-secretmanager/proto-google-cloud-secretmanager-v1beta2/src/main/java/com/google/cloud/secretmanager/v1beta2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-secretmanager/proto-google-cloud-secretmanager-v1beta2/src/main/java/com/google/cloud/secretmanager/v1beta2/ProjectName.java b/java-secretmanager/proto-google-cloud-secretmanager-v1beta2/src/main/java/com/google/cloud/secretmanager/v1beta2/ProjectName.java
index 9360fd8186eb..21a8ac428520 100644
--- a/java-secretmanager/proto-google-cloud-secretmanager-v1beta2/src/main/java/com/google/cloud/secretmanager/v1beta2/ProjectName.java
+++ b/java-secretmanager/proto-google-cloud-secretmanager-v1beta2/src/main/java/com/google/cloud/secretmanager/v1beta2/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-secretmanager/proto-google-cloud-secretmanager-v1beta2/src/main/java/com/google/cloud/secretmanager/v1beta2/SecretName.java b/java-secretmanager/proto-google-cloud-secretmanager-v1beta2/src/main/java/com/google/cloud/secretmanager/v1beta2/SecretName.java
index a51961e35a75..d89219dfc5e9 100644
--- a/java-secretmanager/proto-google-cloud-secretmanager-v1beta2/src/main/java/com/google/cloud/secretmanager/v1beta2/SecretName.java
+++ b/java-secretmanager/proto-google-cloud-secretmanager-v1beta2/src/main/java/com/google/cloud/secretmanager/v1beta2/SecretName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecretName implements ResourceName {
   private static final PathTemplate PROJECT_SECRET =
diff --git a/java-secretmanager/proto-google-cloud-secretmanager-v1beta2/src/main/java/com/google/cloud/secretmanager/v1beta2/SecretVersionName.java b/java-secretmanager/proto-google-cloud-secretmanager-v1beta2/src/main/java/com/google/cloud/secretmanager/v1beta2/SecretVersionName.java
index c0f9eb5aab41..badd865f3aba 100644
--- a/java-secretmanager/proto-google-cloud-secretmanager-v1beta2/src/main/java/com/google/cloud/secretmanager/v1beta2/SecretVersionName.java
+++ b/java-secretmanager/proto-google-cloud-secretmanager-v1beta2/src/main/java/com/google/cloud/secretmanager/v1beta2/SecretVersionName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecretVersionName implements ResourceName {
   private static final PathTemplate PROJECT_SECRET_SECRET_VERSION =
diff --git a/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/SecureSourceManagerClient.java b/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/SecureSourceManagerClient.java
index 518477cc1cec..fe82feeac9d5 100644
--- a/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/SecureSourceManagerClient.java
+++ b/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/SecureSourceManagerClient.java
@@ -48,6 +48,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1225,6 +1226,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecureSourceManagerClient implements BackgroundResource {
   private final SecureSourceManagerSettings settings;
diff --git a/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/SecureSourceManagerSettings.java b/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/SecureSourceManagerSettings.java
index 28aa49312cf2..0edfcfccfbb3 100644
--- a/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/SecureSourceManagerSettings.java
+++ b/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/SecureSourceManagerSettings.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -135,6 +136,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecureSourceManagerSettings extends ClientSettings<SecureSourceManagerSettings> {
 
diff --git a/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/GrpcSecureSourceManagerCallableFactory.java b/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/GrpcSecureSourceManagerCallableFactory.java
index 527da1cc17d9..1744016e3828 100644
--- a/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/GrpcSecureSourceManagerCallableFactory.java
+++ b/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/GrpcSecureSourceManagerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSecureSourceManagerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/GrpcSecureSourceManagerStub.java b/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/GrpcSecureSourceManagerStub.java
index 7053eb1e9165..16431309b2f2 100644
--- a/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/GrpcSecureSourceManagerStub.java
+++ b/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/GrpcSecureSourceManagerStub.java
@@ -125,6 +125,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSecureSourceManagerStub extends SecureSourceManagerStub {
   private static final MethodDescriptor<ListInstancesRequest, ListInstancesResponse>
diff --git a/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/HttpJsonSecureSourceManagerCallableFactory.java b/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/HttpJsonSecureSourceManagerCallableFactory.java
index 07a2628a59f1..1387afa12bc6 100644
--- a/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/HttpJsonSecureSourceManagerCallableFactory.java
+++ b/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/HttpJsonSecureSourceManagerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSecureSourceManagerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/HttpJsonSecureSourceManagerStub.java b/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/HttpJsonSecureSourceManagerStub.java
index e701890a71ee..4ea9c90fd751 100644
--- a/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/HttpJsonSecureSourceManagerStub.java
+++ b/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/HttpJsonSecureSourceManagerStub.java
@@ -136,6 +136,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -143,6 +144,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSecureSourceManagerStub extends SecureSourceManagerStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/SecureSourceManagerStub.java b/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/SecureSourceManagerStub.java
index ffe1c5d490fb..8f664ed8d0b3 100644
--- a/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/SecureSourceManagerStub.java
+++ b/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/SecureSourceManagerStub.java
@@ -116,6 +116,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SecureSourceManagerStub implements BackgroundResource {
 
diff --git a/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/SecureSourceManagerStubSettings.java b/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/SecureSourceManagerStubSettings.java
index e2738eaaf899..571fc407fa33 100644
--- a/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/SecureSourceManagerStubSettings.java
+++ b/java-securesourcemanager/google-cloud-securesourcemanager/src/main/java/com/google/cloud/securesourcemanager/v1/stub/SecureSourceManagerStubSettings.java
@@ -152,6 +152,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -231,6 +232,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SecureSourceManagerStubSettings extends StubSettings<SecureSourceManagerStubSettings> {
diff --git a/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/BranchRuleName.java b/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/BranchRuleName.java
index 0e428cf53b07..5004910337b0 100644
--- a/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/BranchRuleName.java
+++ b/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/BranchRuleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BranchRuleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_BRANCH_RULE =
diff --git a/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/HookName.java b/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/HookName.java
index adbe82d048d6..46b98e065bd9 100644
--- a/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/HookName.java
+++ b/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/HookName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HookName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_HOOK =
diff --git a/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/InstanceName.java b/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/InstanceName.java
index 31433ff911be..5979ab2ae023 100644
--- a/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/InstanceName.java
+++ b/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/IssueCommentName.java b/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/IssueCommentName.java
index 7ff129cb9964..c1a4a5d478e1 100644
--- a/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/IssueCommentName.java
+++ b/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/IssueCommentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IssueCommentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_ISSUE_COMMENT =
diff --git a/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/IssueName.java b/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/IssueName.java
index 01b8f1de5ae2..9d07cba58bcb 100644
--- a/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/IssueName.java
+++ b/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/IssueName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IssueName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_ISSUE =
diff --git a/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/LocationName.java b/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/LocationName.java
index a75131675d32..9be422a45e62 100644
--- a/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/LocationName.java
+++ b/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/PullRequestCommentName.java b/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/PullRequestCommentName.java
index 299dcf6cd89b..0356cb68befe 100644
--- a/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/PullRequestCommentName.java
+++ b/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/PullRequestCommentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PullRequestCommentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_PULL_REQUEST_COMMENT =
diff --git a/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/PullRequestName.java b/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/PullRequestName.java
index b5ad7758c953..1cbf2cc62506 100644
--- a/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/PullRequestName.java
+++ b/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/PullRequestName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PullRequestName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY_PULL_REQUEST =
diff --git a/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/RepositoryName.java b/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/RepositoryName.java
index 103ab8f37c41..f1c13b7f2a48 100644
--- a/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/RepositoryName.java
+++ b/java-securesourcemanager/proto-google-cloud-securesourcemanager-v1/src/main/java/com/google/cloud/securesourcemanager/v1/RepositoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RepositoryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPOSITORY =
diff --git a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/CertificateAuthorityServiceClient.java b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/CertificateAuthorityServiceClient.java
index d12578035e0a..056b091a085f 100644
--- a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/CertificateAuthorityServiceClient.java
+++ b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/CertificateAuthorityServiceClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -782,6 +783,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CertificateAuthorityServiceClient implements BackgroundResource {
   private final CertificateAuthorityServiceSettings settings;
diff --git a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/CertificateAuthorityServiceSettings.java b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/CertificateAuthorityServiceSettings.java
index e52a1f3bfb56..6fdae82ea9e8 100644
--- a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/CertificateAuthorityServiceSettings.java
+++ b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/CertificateAuthorityServiceSettings.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CertificateAuthorityServiceSettings
     extends ClientSettings<CertificateAuthorityServiceSettings> {
diff --git a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/CertificateAuthorityServiceStub.java b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/CertificateAuthorityServiceStub.java
index c926482b2d4d..016c33cbce13 100644
--- a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/CertificateAuthorityServiceStub.java
+++ b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/CertificateAuthorityServiceStub.java
@@ -81,6 +81,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CertificateAuthorityServiceStub implements BackgroundResource {
 
diff --git a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/CertificateAuthorityServiceStubSettings.java b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/CertificateAuthorityServiceStubSettings.java
index 98228a592440..378bc512eff5 100644
--- a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/CertificateAuthorityServiceStubSettings.java
+++ b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/CertificateAuthorityServiceStubSettings.java
@@ -115,6 +115,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -193,6 +194,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CertificateAuthorityServiceStubSettings
diff --git a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/GrpcCertificateAuthorityServiceCallableFactory.java b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/GrpcCertificateAuthorityServiceCallableFactory.java
index fe72b38bbeeb..e58fe9d7c511 100644
--- a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/GrpcCertificateAuthorityServiceCallableFactory.java
+++ b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/GrpcCertificateAuthorityServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCertificateAuthorityServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/GrpcCertificateAuthorityServiceStub.java b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/GrpcCertificateAuthorityServiceStub.java
index 991c8d073d20..3f2496619b36 100644
--- a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/GrpcCertificateAuthorityServiceStub.java
+++ b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/GrpcCertificateAuthorityServiceStub.java
@@ -90,6 +90,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCertificateAuthorityServiceStub extends CertificateAuthorityServiceStub {
   private static final MethodDescriptor<CreateCertificateRequest, Certificate>
diff --git a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/HttpJsonCertificateAuthorityServiceCallableFactory.java b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/HttpJsonCertificateAuthorityServiceCallableFactory.java
index 7c56c9db1669..4be47dac406e 100644
--- a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/HttpJsonCertificateAuthorityServiceCallableFactory.java
+++ b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/HttpJsonCertificateAuthorityServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCertificateAuthorityServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/HttpJsonCertificateAuthorityServiceStub.java b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/HttpJsonCertificateAuthorityServiceStub.java
index 5c036e27d11c..0cef4886933f 100644
--- a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/HttpJsonCertificateAuthorityServiceStub.java
+++ b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1/stub/HttpJsonCertificateAuthorityServiceStub.java
@@ -101,6 +101,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCertificateAuthorityServiceStub extends CertificateAuthorityServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateAuthorityServiceClient.java b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateAuthorityServiceClient.java
index 3a92a6e690e8..c0928e366a89 100644
--- a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateAuthorityServiceClient.java
+++ b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateAuthorityServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -522,6 +523,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CertificateAuthorityServiceClient implements BackgroundResource {
diff --git a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateAuthorityServiceSettings.java b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateAuthorityServiceSettings.java
index 42b1083b9685..9f4bdc297a8f 100644
--- a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateAuthorityServiceSettings.java
+++ b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateAuthorityServiceSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CertificateAuthorityServiceSettings
diff --git a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/CertificateAuthorityServiceStub.java b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/CertificateAuthorityServiceStub.java
index 9ee4af14fb5b..51a9e3051185 100644
--- a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/CertificateAuthorityServiceStub.java
+++ b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/CertificateAuthorityServiceStub.java
@@ -58,6 +58,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CertificateAuthorityServiceStub implements BackgroundResource {
diff --git a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/CertificateAuthorityServiceStubSettings.java b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/CertificateAuthorityServiceStubSettings.java
index 0f80d7231343..07e11ada2901 100644
--- a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/CertificateAuthorityServiceStubSettings.java
+++ b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/CertificateAuthorityServiceStubSettings.java
@@ -91,6 +91,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -169,6 +170,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/GrpcCertificateAuthorityServiceCallableFactory.java b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/GrpcCertificateAuthorityServiceCallableFactory.java
index 53d0b76c82f2..01e6ea32c18e 100644
--- a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/GrpcCertificateAuthorityServiceCallableFactory.java
+++ b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/GrpcCertificateAuthorityServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCertificateAuthorityServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/GrpcCertificateAuthorityServiceStub.java b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/GrpcCertificateAuthorityServiceStub.java
index 08e28ed06ac9..c7b9d2a13da4 100644
--- a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/GrpcCertificateAuthorityServiceStub.java
+++ b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/GrpcCertificateAuthorityServiceStub.java
@@ -67,6 +67,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCertificateAuthorityServiceStub extends CertificateAuthorityServiceStub {
diff --git a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/HttpJsonCertificateAuthorityServiceCallableFactory.java b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/HttpJsonCertificateAuthorityServiceCallableFactory.java
index c9b3b1122795..ee7bd7181ab9 100644
--- a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/HttpJsonCertificateAuthorityServiceCallableFactory.java
+++ b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/HttpJsonCertificateAuthorityServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCertificateAuthorityServiceCallableFactory
diff --git a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/HttpJsonCertificateAuthorityServiceStub.java b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/HttpJsonCertificateAuthorityServiceStub.java
index 8bfa34bd8497..dad2deead7f9 100644
--- a/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/HttpJsonCertificateAuthorityServiceStub.java
+++ b/java-security-private-ca/google-cloud-security-private-ca/src/main/java/com/google/cloud/security/privateca/v1beta1/stub/HttpJsonCertificateAuthorityServiceStub.java
@@ -78,6 +78,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCertificateAuthorityServiceStub extends CertificateAuthorityServiceStub {
diff --git a/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CaPoolName.java b/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CaPoolName.java
index 17b12c58c396..1b726519bb09 100644
--- a/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CaPoolName.java
+++ b/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CaPoolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CaPoolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CA_POOL =
diff --git a/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CertificateAuthorityName.java b/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CertificateAuthorityName.java
index d1c7bf238d69..ed7ebcddeaa4 100644
--- a/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CertificateAuthorityName.java
+++ b/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CertificateAuthorityName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CertificateAuthorityName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CA_POOL_CERTIFICATE_AUTHORITY =
diff --git a/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CertificateName.java b/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CertificateName.java
index b79e09e6e3ca..0d5bfcb335bc 100644
--- a/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CertificateName.java
+++ b/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CertificateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CertificateName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CA_POOL_CERTIFICATE =
diff --git a/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CertificateRevocationListName.java b/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CertificateRevocationListName.java
index 49b4326da872..3716bcd06db9 100644
--- a/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CertificateRevocationListName.java
+++ b/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CertificateRevocationListName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CertificateRevocationListName implements ResourceName {
   private static final PathTemplate
diff --git a/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CertificateTemplateName.java b/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CertificateTemplateName.java
index e50252a68b9c..790b61732fda 100644
--- a/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CertificateTemplateName.java
+++ b/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/CertificateTemplateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CertificateTemplateName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CERTIFICATE_TEMPLATE =
diff --git a/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/LocationName.java b/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/LocationName.java
index 8ec293f46e9f..c168b15fe235 100644
--- a/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/LocationName.java
+++ b/java-security-private-ca/proto-google-cloud-security-private-ca-v1/src/main/java/com/google/cloud/security/privateca/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateAuthorityName.java b/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateAuthorityName.java
index 05400b83d033..0296adbb4074 100644
--- a/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateAuthorityName.java
+++ b/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateAuthorityName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CertificateAuthorityName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CERTIFICATE_AUTHORITY =
diff --git a/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateName.java b/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateName.java
index fca127301758..1746dce3bd24 100644
--- a/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateName.java
+++ b/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CertificateName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CERTIFICATE_AUTHORITY_CERTIFICATE =
diff --git a/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateRevocationListName.java b/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateRevocationListName.java
index 4d9272c080e4..4099876124e1 100644
--- a/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateRevocationListName.java
+++ b/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/CertificateRevocationListName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CertificateRevocationListName implements ResourceName {
   private static final PathTemplate
diff --git a/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/LocationName.java b/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/LocationName.java
index ea3c99d30f4e..e58baa064c1c 100644
--- a/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/LocationName.java
+++ b/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/ReusableConfigName.java b/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/ReusableConfigName.java
index ab2f625b1bd4..b2ab1929613f 100644
--- a/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/ReusableConfigName.java
+++ b/java-security-private-ca/proto-google-cloud-security-private-ca-v1beta1/src/main/java/com/google/cloud/security/privateca/v1beta1/ReusableConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReusableConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REUSABLE_CONFIG =
diff --git a/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/SecurityCenterSettingsServiceClient.java b/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/SecurityCenterSettingsServiceClient.java
index 1b5e0633514c..4cfd87487b20 100644
--- a/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/SecurityCenterSettingsServiceClient.java
+++ b/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/SecurityCenterSettingsServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -342,6 +343,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SecurityCenterSettingsServiceClient implements BackgroundResource {
diff --git a/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/SecurityCenterSettingsServiceSettings.java b/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/SecurityCenterSettingsServiceSettings.java
index b3c64459c96a..544b96714f09 100644
--- a/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/SecurityCenterSettingsServiceSettings.java
+++ b/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/SecurityCenterSettingsServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SecurityCenterSettingsServiceSettings
diff --git a/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/stub/GrpcSecurityCenterSettingsServiceCallableFactory.java b/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/stub/GrpcSecurityCenterSettingsServiceCallableFactory.java
index 8715297c24fc..68b83c0a0532 100644
--- a/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/stub/GrpcSecurityCenterSettingsServiceCallableFactory.java
+++ b/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/stub/GrpcSecurityCenterSettingsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSecurityCenterSettingsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/stub/GrpcSecurityCenterSettingsServiceStub.java b/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/stub/GrpcSecurityCenterSettingsServiceStub.java
index b066e4a19e96..6ec0474c31ab 100644
--- a/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/stub/GrpcSecurityCenterSettingsServiceStub.java
+++ b/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/stub/GrpcSecurityCenterSettingsServiceStub.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSecurityCenterSettingsServiceStub extends SecurityCenterSettingsServiceStub {
diff --git a/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/stub/SecurityCenterSettingsServiceStub.java b/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/stub/SecurityCenterSettingsServiceStub.java
index 03dc4758c703..7340b38b8749 100644
--- a/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/stub/SecurityCenterSettingsServiceStub.java
+++ b/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/stub/SecurityCenterSettingsServiceStub.java
@@ -44,6 +44,7 @@
 import com.google.cloud.securitycenter.settings.v1beta1.UpdateSettingsRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SecurityCenterSettingsServiceStub implements BackgroundResource {
diff --git a/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/stub/SecurityCenterSettingsServiceStubSettings.java b/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/stub/SecurityCenterSettingsServiceStubSettings.java
index dc3a8dcd5d6c..fd643febb04a 100644
--- a/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/stub/SecurityCenterSettingsServiceStubSettings.java
+++ b/java-securitycenter-settings/google-cloud-securitycenter-settings/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/stub/SecurityCenterSettingsServiceStubSettings.java
@@ -73,6 +73,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -126,6 +127,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-securitycenter-settings/proto-google-cloud-securitycenter-settings-v1beta1/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/ComponentSettingsName.java b/java-securitycenter-settings/proto-google-cloud-securitycenter-settings-v1beta1/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/ComponentSettingsName.java
index 0fc42dab6f77..54078a9702d4 100644
--- a/java-securitycenter-settings/proto-google-cloud-securitycenter-settings-v1beta1/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/ComponentSettingsName.java
+++ b/java-securitycenter-settings/proto-google-cloud-securitycenter-settings-v1beta1/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/ComponentSettingsName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ComponentSettingsName implements ResourceName {
   private static final PathTemplate ORGANIZATION_COMPONENT =
diff --git a/java-securitycenter-settings/proto-google-cloud-securitycenter-settings-v1beta1/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/OrganizationName.java b/java-securitycenter-settings/proto-google-cloud-securitycenter-settings-v1beta1/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/OrganizationName.java
index cc3947d86e08..bb257fb79ef9 100644
--- a/java-securitycenter-settings/proto-google-cloud-securitycenter-settings-v1beta1/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/OrganizationName.java
+++ b/java-securitycenter-settings/proto-google-cloud-securitycenter-settings-v1beta1/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-securitycenter-settings/proto-google-cloud-securitycenter-settings-v1beta1/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/ServiceAccountName.java b/java-securitycenter-settings/proto-google-cloud-securitycenter-settings-v1beta1/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/ServiceAccountName.java
index b578ea462776..bf2480b04f0a 100644
--- a/java-securitycenter-settings/proto-google-cloud-securitycenter-settings-v1beta1/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/ServiceAccountName.java
+++ b/java-securitycenter-settings/proto-google-cloud-securitycenter-settings-v1beta1/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/ServiceAccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceAccountName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-securitycenter-settings/proto-google-cloud-securitycenter-settings-v1beta1/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/SettingsName.java b/java-securitycenter-settings/proto-google-cloud-securitycenter-settings-v1beta1/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/SettingsName.java
index 2642609e684d..b1ad449a339d 100644
--- a/java-securitycenter-settings/proto-google-cloud-securitycenter-settings-v1beta1/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/SettingsName.java
+++ b/java-securitycenter-settings/proto-google-cloud-securitycenter-settings-v1beta1/src/main/java/com/google/cloud/securitycenter/settings/v1beta1/SettingsName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SettingsName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/SecurityCenterClient.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/SecurityCenterClient.java
index 7f7c63e8783e..787e72b4c672 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/SecurityCenterClient.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/SecurityCenterClient.java
@@ -45,6 +45,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1351,6 +1352,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecurityCenterClient implements BackgroundResource {
   private final SecurityCenterSettings settings;
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/SecurityCenterSettings.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/SecurityCenterSettings.java
index 30a5031fd573..610e1846497b 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/SecurityCenterSettings.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/SecurityCenterSettings.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -136,6 +137,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecurityCenterSettings extends ClientSettings<SecurityCenterSettings> {
 
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/GrpcSecurityCenterCallableFactory.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/GrpcSecurityCenterCallableFactory.java
index dc1d12681ad6..77d04b38c27d 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/GrpcSecurityCenterCallableFactory.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/GrpcSecurityCenterCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSecurityCenterCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/GrpcSecurityCenterStub.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/GrpcSecurityCenterStub.java
index bb1991c09fbc..3ea7ec31b036 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/GrpcSecurityCenterStub.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/GrpcSecurityCenterStub.java
@@ -152,6 +152,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -159,6 +160,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSecurityCenterStub extends SecurityCenterStub {
   private static final MethodDescriptor<BulkMuteFindingsRequest, Operation>
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/HttpJsonSecurityCenterCallableFactory.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/HttpJsonSecurityCenterCallableFactory.java
index 61e6abd929d4..57284bdae149 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/HttpJsonSecurityCenterCallableFactory.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/HttpJsonSecurityCenterCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSecurityCenterCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/HttpJsonSecurityCenterStub.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/HttpJsonSecurityCenterStub.java
index 3177282d40cf..eb5193fd06a7 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/HttpJsonSecurityCenterStub.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/HttpJsonSecurityCenterStub.java
@@ -163,6 +163,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -170,6 +171,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSecurityCenterStub extends SecurityCenterStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/SecurityCenterStub.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/SecurityCenterStub.java
index b2048a0d06aa..e41636fb00e7 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/SecurityCenterStub.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/SecurityCenterStub.java
@@ -143,6 +143,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SecurityCenterStub implements BackgroundResource {
 
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/SecurityCenterStubSettings.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/SecurityCenterStubSettings.java
index 4ce446ce4512..c50e54df283b 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/SecurityCenterStubSettings.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1/stub/SecurityCenterStubSettings.java
@@ -179,6 +179,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -257,6 +258,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SecurityCenterStubSettings extends StubSettings<SecurityCenterStubSettings> {
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/SecurityCenterClient.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/SecurityCenterClient.java
index 8eccf9d9abcc..783ca61a92c2 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/SecurityCenterClient.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/SecurityCenterClient.java
@@ -44,6 +44,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -462,6 +463,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SecurityCenterClient implements BackgroundResource {
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/SecurityCenterSettings.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/SecurityCenterSettings.java
index 4d0d7f9d4126..44b5f63852d2 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/SecurityCenterSettings.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/SecurityCenterSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SecurityCenterSettings extends ClientSettings<SecurityCenterSettings> {
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/GrpcSecurityCenterCallableFactory.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/GrpcSecurityCenterCallableFactory.java
index 74008b678cc1..f58c18cf4cdc 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/GrpcSecurityCenterCallableFactory.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/GrpcSecurityCenterCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSecurityCenterCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/GrpcSecurityCenterStub.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/GrpcSecurityCenterStub.java
index 96852820b6d5..1b991b16e26d 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/GrpcSecurityCenterStub.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/GrpcSecurityCenterStub.java
@@ -68,6 +68,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSecurityCenterStub extends SecurityCenterStub {
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/HttpJsonSecurityCenterCallableFactory.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/HttpJsonSecurityCenterCallableFactory.java
index a59376504762..f13546179aa6 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/HttpJsonSecurityCenterCallableFactory.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/HttpJsonSecurityCenterCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSecurityCenterCallableFactory
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/HttpJsonSecurityCenterStub.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/HttpJsonSecurityCenterStub.java
index 232a61704166..0f197a2dfc04 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/HttpJsonSecurityCenterStub.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/HttpJsonSecurityCenterStub.java
@@ -79,6 +79,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSecurityCenterStub extends SecurityCenterStub {
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/SecurityCenterStub.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/SecurityCenterStub.java
index c24121658987..3be69dd78d78 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/SecurityCenterStub.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/SecurityCenterStub.java
@@ -59,6 +59,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SecurityCenterStub implements BackgroundResource {
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/SecurityCenterStubSettings.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/SecurityCenterStubSettings.java
index d4ccb033848c..ebb0e151b7e9 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/SecurityCenterStubSettings.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1beta1/stub/SecurityCenterStubSettings.java
@@ -93,6 +93,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -171,6 +172,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/SecurityCenterClient.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/SecurityCenterClient.java
index da848fd9babf..27009e2dc97d 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/SecurityCenterClient.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/SecurityCenterClient.java
@@ -45,6 +45,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -580,6 +581,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SecurityCenterClient implements BackgroundResource {
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/SecurityCenterSettings.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/SecurityCenterSettings.java
index ff79ee7902a3..a5ce342dac8b 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/SecurityCenterSettings.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/SecurityCenterSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -125,6 +126,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SecurityCenterSettings extends ClientSettings<SecurityCenterSettings> {
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/GrpcSecurityCenterCallableFactory.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/GrpcSecurityCenterCallableFactory.java
index 1590853f323b..512a05f55068 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/GrpcSecurityCenterCallableFactory.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/GrpcSecurityCenterCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSecurityCenterCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/GrpcSecurityCenterStub.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/GrpcSecurityCenterStub.java
index 865da536d576..1095c41ad79d 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/GrpcSecurityCenterStub.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/GrpcSecurityCenterStub.java
@@ -77,6 +77,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSecurityCenterStub extends SecurityCenterStub {
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/HttpJsonSecurityCenterCallableFactory.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/HttpJsonSecurityCenterCallableFactory.java
index 1a0cd4eba0b9..0ffd8e3c50f6 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/HttpJsonSecurityCenterCallableFactory.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/HttpJsonSecurityCenterCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSecurityCenterCallableFactory
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/HttpJsonSecurityCenterStub.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/HttpJsonSecurityCenterStub.java
index b84d3186606d..738119e8fc57 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/HttpJsonSecurityCenterStub.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/HttpJsonSecurityCenterStub.java
@@ -88,6 +88,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -95,6 +96,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSecurityCenterStub extends SecurityCenterStub {
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/SecurityCenterStub.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/SecurityCenterStub.java
index 43a7cd2de751..027b4e9180e3 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/SecurityCenterStub.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/SecurityCenterStub.java
@@ -68,6 +68,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SecurityCenterStub implements BackgroundResource {
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/SecurityCenterStubSettings.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/SecurityCenterStubSettings.java
index fb29e0aa96dc..63b35acd94ec 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/SecurityCenterStubSettings.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v1p1beta1/stub/SecurityCenterStubSettings.java
@@ -102,6 +102,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -180,6 +181,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/SecurityCenterClient.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/SecurityCenterClient.java
index 9b4e1128b2b4..4758791e4077 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/SecurityCenterClient.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/SecurityCenterClient.java
@@ -44,6 +44,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -917,6 +918,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecurityCenterClient implements BackgroundResource {
   private final SecurityCenterSettings settings;
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/SecurityCenterSettings.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/SecurityCenterSettings.java
index 4f0c025967f3..58ff54320990 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/SecurityCenterSettings.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/SecurityCenterSettings.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -128,6 +129,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecurityCenterSettings extends ClientSettings<SecurityCenterSettings> {
 
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/GrpcSecurityCenterCallableFactory.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/GrpcSecurityCenterCallableFactory.java
index b0f52626866e..6d867ede9185 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/GrpcSecurityCenterCallableFactory.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/GrpcSecurityCenterCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSecurityCenterCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/GrpcSecurityCenterStub.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/GrpcSecurityCenterStub.java
index ff005842760c..39de52077434 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/GrpcSecurityCenterStub.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/GrpcSecurityCenterStub.java
@@ -106,6 +106,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSecurityCenterStub extends SecurityCenterStub {
   private static final MethodDescriptor<
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/HttpJsonSecurityCenterCallableFactory.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/HttpJsonSecurityCenterCallableFactory.java
index d5eae1f97fe4..9158a9c4acd8 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/HttpJsonSecurityCenterCallableFactory.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/HttpJsonSecurityCenterCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSecurityCenterCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/HttpJsonSecurityCenterStub.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/HttpJsonSecurityCenterStub.java
index 25efa72780f0..623e87dab00b 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/HttpJsonSecurityCenterStub.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/HttpJsonSecurityCenterStub.java
@@ -117,6 +117,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSecurityCenterStub extends SecurityCenterStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/SecurityCenterStub.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/SecurityCenterStub.java
index 11f4eb3c007c..d75a9dd17ac9 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/SecurityCenterStub.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/SecurityCenterStub.java
@@ -96,6 +96,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SecurityCenterStub implements BackgroundResource {
 
diff --git a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/SecurityCenterStubSettings.java b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/SecurityCenterStubSettings.java
index 3cc8e0de83bc..2ccbf9b80fda 100644
--- a/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/SecurityCenterStubSettings.java
+++ b/java-securitycenter/google-cloud-securitycenter/src/main/java/com/google/cloud/securitycenter/v2/stub/SecurityCenterStubSettings.java
@@ -132,6 +132,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -210,6 +211,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SecurityCenterStubSettings extends StubSettings<SecurityCenterStubSettings> {
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/AssetName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/AssetName.java
index f3c5aca67f8e..d34dc953c7ea 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/AssetName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/AssetName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AssetName implements ResourceName {
   private static final PathTemplate ORGANIZATION_ASSET =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/AttackPathName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/AttackPathName.java
index 64f7d454edaa..c337f4276d20 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/AttackPathName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/AttackPathName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AttackPathName implements ResourceName {
   private static final PathTemplate ORGANIZATION_SIMULATION_VALUED_RESOURCE_ATTACK_PATH =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/BigQueryExportName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/BigQueryExportName.java
index f3bd66927f30..46643bb3652a 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/BigQueryExportName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/BigQueryExportName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BigQueryExportName implements ResourceName {
   private static final PathTemplate ORGANIZATION_EXPORT =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/EffectiveEventThreatDetectionCustomModuleName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/EffectiveEventThreatDetectionCustomModuleName.java
index 97b75c392c27..84585fa9e485 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/EffectiveEventThreatDetectionCustomModuleName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/EffectiveEventThreatDetectionCustomModuleName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EffectiveEventThreatDetectionCustomModuleName implements ResourceName {
   private static final PathTemplate ORGANIZATION_MODULE =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/EffectiveSecurityHealthAnalyticsCustomModuleName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/EffectiveSecurityHealthAnalyticsCustomModuleName.java
index 19da7b1ef1d3..e4bba94af5b5 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/EffectiveSecurityHealthAnalyticsCustomModuleName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/EffectiveSecurityHealthAnalyticsCustomModuleName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EffectiveSecurityHealthAnalyticsCustomModuleName implements ResourceName {
   private static final PathTemplate ORGANIZATION_EFFECTIVE_CUSTOM_MODULE =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/EventThreatDetectionCustomModuleName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/EventThreatDetectionCustomModuleName.java
index a7b0ef9d64eb..c6b924f1e2c6 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/EventThreatDetectionCustomModuleName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/EventThreatDetectionCustomModuleName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EventThreatDetectionCustomModuleName implements ResourceName {
   private static final PathTemplate ORGANIZATION_MODULE =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/EventThreatDetectionSettingsName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/EventThreatDetectionSettingsName.java
index 2ce7948e8eaa..d1aff4764669 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/EventThreatDetectionSettingsName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/EventThreatDetectionSettingsName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EventThreatDetectionSettingsName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/FindingName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/FindingName.java
index 58bd94d5e83b..01df2b4144b0 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/FindingName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/FindingName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FindingName implements ResourceName {
   private static final PathTemplate ORGANIZATION_SOURCE_FINDING =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/FolderLocationName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/FolderLocationName.java
index 26be28db24c3..1569c7cf7150 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/FolderLocationName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/FolderLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderLocationName implements ResourceName {
   private static final PathTemplate FOLDER_LOCATION =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/FolderName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/FolderName.java
index ce4e735d4353..c1ea1446eca0 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/FolderName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/FolderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderName implements ResourceName {
   private static final PathTemplate FOLDER =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/LocationName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/LocationName.java
index 53dbdb58c2bf..93468b1e8c93 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/LocationName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/MuteConfigName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/MuteConfigName.java
index b06fc4e96caa..698db15e4e9c 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/MuteConfigName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/MuteConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MuteConfigName implements ResourceName {
   private static final PathTemplate ORGANIZATION_MUTE_CONFIG =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/NotificationConfigName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/NotificationConfigName.java
index 3c914a3011ca..2442406ea390 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/NotificationConfigName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/NotificationConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotificationConfigName implements ResourceName {
   private static final PathTemplate ORGANIZATION_NOTIFICATION_CONFIG =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/OrganizationLocationName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/OrganizationLocationName.java
index 07f241095b8f..3530a0e0486e 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/OrganizationLocationName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/OrganizationLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationLocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/OrganizationName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/OrganizationName.java
index 03c21aa84647..8b77b13b081c 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/OrganizationName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/OrganizationSettingsName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/OrganizationSettingsName.java
index 41c93f424a58..2448a3d4e1b2 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/OrganizationSettingsName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/OrganizationSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationSettingsName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/OrganizationSimulationName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/OrganizationSimulationName.java
index dd6b451b6f14..5fa716c3b951 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/OrganizationSimulationName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/OrganizationSimulationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationSimulationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_SIMULATION =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/ProjectName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/ProjectName.java
index 801338b2d831..4cea1185f55a 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/ProjectName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/ResourceValueConfigName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/ResourceValueConfigName.java
index 86e3c4ad1feb..77d5463e8f18 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/ResourceValueConfigName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/ResourceValueConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ResourceValueConfigName implements ResourceName {
   private static final PathTemplate ORGANIZATION_RESOURCE_VALUE_CONFIG =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/SecurityHealthAnalyticsCustomModuleName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/SecurityHealthAnalyticsCustomModuleName.java
index 12eec5cf20ee..05cebe6568ff 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/SecurityHealthAnalyticsCustomModuleName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/SecurityHealthAnalyticsCustomModuleName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecurityHealthAnalyticsCustomModuleName implements ResourceName {
   private static final PathTemplate ORGANIZATION_CUSTOM_MODULE =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/SecurityHealthAnalyticsSettingsName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/SecurityHealthAnalyticsSettingsName.java
index ee1b999555b1..0d047ea8de05 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/SecurityHealthAnalyticsSettingsName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/SecurityHealthAnalyticsSettingsName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecurityHealthAnalyticsSettingsName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/SimulationName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/SimulationName.java
index 344f9fec56d6..2fdfad71c77a 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/SimulationName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/SimulationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SimulationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_SIMULATION =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/SourceName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/SourceName.java
index 7ba1ddc7bf40..6cba5427f5e5 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/SourceName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/SourceName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SourceName implements ResourceName {
   private static final PathTemplate ORGANIZATION_SOURCE =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/ValuedResourceName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/ValuedResourceName.java
index 4034d3d34218..7074424f7860 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/ValuedResourceName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/ValuedResourceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ValuedResourceName implements ResourceName {
   private static final PathTemplate ORGANIZATION_SIMULATION_VALUED_RESOURCE =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1beta1/src/main/java/com/google/cloud/securitycenter/v1beta1/FindingName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1beta1/src/main/java/com/google/cloud/securitycenter/v1beta1/FindingName.java
index 90b7031160b3..a38becfad9f0 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1beta1/src/main/java/com/google/cloud/securitycenter/v1beta1/FindingName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1beta1/src/main/java/com/google/cloud/securitycenter/v1beta1/FindingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FindingName implements ResourceName {
   private static final PathTemplate ORGANIZATION_SOURCE_FINDING =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1beta1/src/main/java/com/google/cloud/securitycenter/v1beta1/OrganizationName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1beta1/src/main/java/com/google/cloud/securitycenter/v1beta1/OrganizationName.java
index f2e9ceffc8fd..756fb7522f96 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1beta1/src/main/java/com/google/cloud/securitycenter/v1beta1/OrganizationName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1beta1/src/main/java/com/google/cloud/securitycenter/v1beta1/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1beta1/src/main/java/com/google/cloud/securitycenter/v1beta1/OrganizationSettingsName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1beta1/src/main/java/com/google/cloud/securitycenter/v1beta1/OrganizationSettingsName.java
index c36a38ae5422..6065379d27d9 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1beta1/src/main/java/com/google/cloud/securitycenter/v1beta1/OrganizationSettingsName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1beta1/src/main/java/com/google/cloud/securitycenter/v1beta1/OrganizationSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationSettingsName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1beta1/src/main/java/com/google/cloud/securitycenter/v1beta1/SourceName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1beta1/src/main/java/com/google/cloud/securitycenter/v1beta1/SourceName.java
index ed38e36f0089..60b063c176fe 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1beta1/src/main/java/com/google/cloud/securitycenter/v1beta1/SourceName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1beta1/src/main/java/com/google/cloud/securitycenter/v1beta1/SourceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SourceName implements ResourceName {
   private static final PathTemplate ORGANIZATION_SOURCE =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/AssetName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/AssetName.java
index a4a5221b2c03..7bb7f4124335 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/AssetName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/AssetName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AssetName implements ResourceName {
   private static final PathTemplate ORGANIZATION_ASSET =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/FindingName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/FindingName.java
index 0e7a3273bb8a..c2eb224040b0 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/FindingName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/FindingName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FindingName implements ResourceName {
   private static final PathTemplate ORGANIZATION_SOURCE_FINDING =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/FolderName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/FolderName.java
index 78953cf41991..0fdd773f003b 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/FolderName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/FolderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderName implements ResourceName {
   private static final PathTemplate FOLDER =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/NotificationConfigName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/NotificationConfigName.java
index 40516026227b..f9a84bc838d7 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/NotificationConfigName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/NotificationConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotificationConfigName implements ResourceName {
   private static final PathTemplate ORGANIZATION_NOTIFICATION_CONFIG =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/OrganizationName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/OrganizationName.java
index 2dc2cd37a9a7..319136d4fb7e 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/OrganizationName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/OrganizationSettingsName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/OrganizationSettingsName.java
index 2ec086d0078f..509ecc7e0b3e 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/OrganizationSettingsName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/OrganizationSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationSettingsName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/ProjectName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/ProjectName.java
index a52776d9952d..e2f2653d8773 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/ProjectName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/SourceName.java b/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/SourceName.java
index a1cf828efca7..efe2a5264740 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/SourceName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1p1beta1/src/main/java/com/google/cloud/securitycenter/v1p1beta1/SourceName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SourceName implements ResourceName {
   private static final PathTemplate ORGANIZATION_SOURCE =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/AttackPathName.java b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/AttackPathName.java
index 1f2da3cd7629..6479cbadbb63 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/AttackPathName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/AttackPathName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AttackPathName implements ResourceName {
   private static final PathTemplate ORGANIZATION_SIMULATION_VALUED_RESOURCE_ATTACK_PATH =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/BigQueryExportName.java b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/BigQueryExportName.java
index 776b7cacdc35..e4baf09d76b7 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/BigQueryExportName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/BigQueryExportName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BigQueryExportName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_EXPORT =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/FindingName.java b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/FindingName.java
index 3a8657d52d1d..f4dbee07970c 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/FindingName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/FindingName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FindingName implements ResourceName {
   private static final PathTemplate ORGANIZATION_SOURCE_FINDING =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/FolderLocationName.java b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/FolderLocationName.java
index 416b16cb7dfa..8bcd00c75de1 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/FolderLocationName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/FolderLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderLocationName implements ResourceName {
   private static final PathTemplate FOLDER_LOCATION =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/FolderName.java b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/FolderName.java
index c9f34f3d15e3..c9409c6809ee 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/FolderName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/FolderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderName implements ResourceName {
   private static final PathTemplate FOLDER =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/LocationName.java b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/LocationName.java
index 703f44144505..83d6641b8f6a 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/LocationName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/MuteConfigName.java b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/MuteConfigName.java
index e4b3857070d1..952026e70745 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/MuteConfigName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/MuteConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MuteConfigName implements ResourceName {
   private static final PathTemplate ORGANIZATION_MUTE_CONFIG =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/NotificationConfigName.java b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/NotificationConfigName.java
index 8c4934f6b975..c99681adea86 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/NotificationConfigName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/NotificationConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotificationConfigName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_NOTIFICATION_CONFIG =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/OrganizationLocationName.java b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/OrganizationLocationName.java
index eeef24f3e1ca..bb5e32320737 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/OrganizationLocationName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/OrganizationLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationLocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/OrganizationName.java b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/OrganizationName.java
index 1272ac51f59e..c921c2e55a4d 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/OrganizationName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/OrganizationValuedResourceName.java b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/OrganizationValuedResourceName.java
index 722113ee2f43..ed015122c1e4 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/OrganizationValuedResourceName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/OrganizationValuedResourceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationValuedResourceName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_SIMULATION_VALUED_RESOURCE =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/ProjectName.java b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/ProjectName.java
index 1587117a76f9..0faf7eb77e99 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/ProjectName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/ResourceValueConfigName.java b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/ResourceValueConfigName.java
index ccad558dd23d..36bbc0901c5b 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/ResourceValueConfigName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/ResourceValueConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ResourceValueConfigName implements ResourceName {
   private static final PathTemplate ORGANIZATION_RESOURCE_VALUE_CONFIG =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/SimulationName.java b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/SimulationName.java
index c112b5b9c051..1c23cc3fcc15 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/SimulationName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/SimulationName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SimulationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_SIMULATION =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/SourceName.java b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/SourceName.java
index 8f232166c562..bce6f8f62b7e 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/SourceName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/SourceName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SourceName implements ResourceName {
   private static final PathTemplate ORGANIZATION_SOURCE =
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/ValuedResourceName.java b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/ValuedResourceName.java
index 0126118acb15..702dc91e2e6b 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/ValuedResourceName.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v2/src/main/java/com/google/cloud/securitycenter/v2/ValuedResourceName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ValuedResourceName implements ResourceName {
   private static final PathTemplate ORGANIZATION_SIMULATION_VALUED_RESOURCE =
diff --git a/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/SecurityCenterManagementClient.java b/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/SecurityCenterManagementClient.java
index 7699b53d4b4b..6b0e67931aaf 100644
--- a/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/SecurityCenterManagementClient.java
+++ b/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/SecurityCenterManagementClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -576,6 +577,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecurityCenterManagementClient implements BackgroundResource {
   private final SecurityCenterManagementSettings settings;
diff --git a/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/SecurityCenterManagementSettings.java b/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/SecurityCenterManagementSettings.java
index 4dd8c0d2161e..2e229acbc8f8 100644
--- a/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/SecurityCenterManagementSettings.java
+++ b/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/SecurityCenterManagementSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecurityCenterManagementSettings
     extends ClientSettings<SecurityCenterManagementSettings> {
diff --git a/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/GrpcSecurityCenterManagementCallableFactory.java b/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/GrpcSecurityCenterManagementCallableFactory.java
index 0e00e191384e..66b7f1ec5213 100644
--- a/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/GrpcSecurityCenterManagementCallableFactory.java
+++ b/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/GrpcSecurityCenterManagementCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSecurityCenterManagementCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/GrpcSecurityCenterManagementStub.java b/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/GrpcSecurityCenterManagementStub.java
index a6c4146e896b..f09fa70ed3e8 100644
--- a/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/GrpcSecurityCenterManagementStub.java
+++ b/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/GrpcSecurityCenterManagementStub.java
@@ -78,6 +78,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSecurityCenterManagementStub extends SecurityCenterManagementStub {
   private static final MethodDescriptor<
diff --git a/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/HttpJsonSecurityCenterManagementCallableFactory.java b/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/HttpJsonSecurityCenterManagementCallableFactory.java
index 04bd9b1cf32c..f91292b45ea4 100644
--- a/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/HttpJsonSecurityCenterManagementCallableFactory.java
+++ b/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/HttpJsonSecurityCenterManagementCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSecurityCenterManagementCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/HttpJsonSecurityCenterManagementStub.java b/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/HttpJsonSecurityCenterManagementStub.java
index c0d0db78b6dc..9fab64a150aa 100644
--- a/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/HttpJsonSecurityCenterManagementStub.java
+++ b/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/HttpJsonSecurityCenterManagementStub.java
@@ -85,6 +85,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSecurityCenterManagementStub extends SecurityCenterManagementStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/SecurityCenterManagementStub.java b/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/SecurityCenterManagementStub.java
index 350338c47760..c70b8ea3dae0 100644
--- a/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/SecurityCenterManagementStub.java
+++ b/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/SecurityCenterManagementStub.java
@@ -68,6 +68,7 @@
 import com.google.cloud.securitycentermanagement.v1.ValidateEventThreatDetectionCustomModuleResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SecurityCenterManagementStub implements BackgroundResource {
 
diff --git a/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/SecurityCenterManagementStubSettings.java b/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/SecurityCenterManagementStubSettings.java
index 50047555c040..e7bcd0dc5fe0 100644
--- a/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/SecurityCenterManagementStubSettings.java
+++ b/java-securitycentermanagement/google-cloud-securitycentermanagement/src/main/java/com/google/cloud/securitycentermanagement/v1/stub/SecurityCenterManagementStubSettings.java
@@ -100,6 +100,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SecurityCenterManagementStubSettings
diff --git a/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/EffectiveEventThreatDetectionCustomModuleName.java b/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/EffectiveEventThreatDetectionCustomModuleName.java
index 059dac99cec9..11f81bfbd301 100644
--- a/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/EffectiveEventThreatDetectionCustomModuleName.java
+++ b/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/EffectiveEventThreatDetectionCustomModuleName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EffectiveEventThreatDetectionCustomModuleName implements ResourceName {
   private static final PathTemplate
diff --git a/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/EffectiveSecurityHealthAnalyticsCustomModuleName.java b/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/EffectiveSecurityHealthAnalyticsCustomModuleName.java
index 156627fcd298..0e2425b7c638 100644
--- a/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/EffectiveSecurityHealthAnalyticsCustomModuleName.java
+++ b/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/EffectiveSecurityHealthAnalyticsCustomModuleName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EffectiveSecurityHealthAnalyticsCustomModuleName implements ResourceName {
   private static final PathTemplate
diff --git a/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/EventThreatDetectionCustomModuleName.java b/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/EventThreatDetectionCustomModuleName.java
index 52fb43aaf6ac..629d0c0f6398 100644
--- a/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/EventThreatDetectionCustomModuleName.java
+++ b/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/EventThreatDetectionCustomModuleName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EventThreatDetectionCustomModuleName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_EVENT_THREAT_DETECTION_CUSTOM_MODULE =
diff --git a/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/FolderLocationName.java b/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/FolderLocationName.java
index 8bc4f223d200..5d9923668fdb 100644
--- a/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/FolderLocationName.java
+++ b/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/FolderLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderLocationName implements ResourceName {
   private static final PathTemplate FOLDER_LOCATION =
diff --git a/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/LocationName.java b/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/LocationName.java
index 4a55861417fc..ebdde7c6a7ad 100644
--- a/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/LocationName.java
+++ b/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/OrganizationLocationName.java b/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/OrganizationLocationName.java
index 4043c3fcc6fe..3018798e9df1 100644
--- a/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/OrganizationLocationName.java
+++ b/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/OrganizationLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationLocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/SecurityCenterServiceName.java b/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/SecurityCenterServiceName.java
index 6bc12755b442..26431db710e7 100644
--- a/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/SecurityCenterServiceName.java
+++ b/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/SecurityCenterServiceName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecurityCenterServiceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SERVICE =
diff --git a/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/SecurityHealthAnalyticsCustomModuleName.java b/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/SecurityHealthAnalyticsCustomModuleName.java
index a8432d40fa23..61c71d9f357a 100644
--- a/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/SecurityHealthAnalyticsCustomModuleName.java
+++ b/java-securitycentermanagement/proto-google-cloud-securitycentermanagement-v1/src/main/java/com/google/cloud/securitycentermanagement/v1/SecurityHealthAnalyticsCustomModuleName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecurityHealthAnalyticsCustomModuleName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_SECURITY_HEALTH_ANALYTICS_CUSTOM_MODULE =
diff --git a/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/SecurityPostureClient.java b/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/SecurityPostureClient.java
index 2b2834283102..54cb437fc1d0 100644
--- a/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/SecurityPostureClient.java
+++ b/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/SecurityPostureClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -430,6 +431,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecurityPostureClient implements BackgroundResource {
   private final SecurityPostureSettings settings;
diff --git a/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/SecurityPostureSettings.java b/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/SecurityPostureSettings.java
index 89257ca7dc6a..04bddeb99013 100644
--- a/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/SecurityPostureSettings.java
+++ b/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/SecurityPostureSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SecurityPostureSettings extends ClientSettings<SecurityPostureSettings> {
 
diff --git a/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/GrpcSecurityPostureCallableFactory.java b/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/GrpcSecurityPostureCallableFactory.java
index f335c768e7db..4e1acb01a2c1 100644
--- a/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/GrpcSecurityPostureCallableFactory.java
+++ b/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/GrpcSecurityPostureCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSecurityPostureCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/GrpcSecurityPostureStub.java b/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/GrpcSecurityPostureStub.java
index 6944274ec0a3..a46ac7335e2d 100644
--- a/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/GrpcSecurityPostureStub.java
+++ b/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/GrpcSecurityPostureStub.java
@@ -64,6 +64,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSecurityPostureStub extends SecurityPostureStub {
   private static final MethodDescriptor<ListPosturesRequest, ListPosturesResponse>
diff --git a/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/HttpJsonSecurityPostureCallableFactory.java b/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/HttpJsonSecurityPostureCallableFactory.java
index 5cf72782ab2b..9a680d16e3e2 100644
--- a/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/HttpJsonSecurityPostureCallableFactory.java
+++ b/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/HttpJsonSecurityPostureCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSecurityPostureCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/HttpJsonSecurityPostureStub.java b/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/HttpJsonSecurityPostureStub.java
index d27450cf7f84..2b5c92031946 100644
--- a/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/HttpJsonSecurityPostureStub.java
+++ b/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/HttpJsonSecurityPostureStub.java
@@ -75,6 +75,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSecurityPostureStub extends SecurityPostureStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/SecurityPostureStub.java b/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/SecurityPostureStub.java
index e292d066bc69..98ef463f0fa3 100644
--- a/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/SecurityPostureStub.java
+++ b/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/SecurityPostureStub.java
@@ -55,6 +55,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SecurityPostureStub implements BackgroundResource {
 
diff --git a/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/SecurityPostureStubSettings.java b/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/SecurityPostureStubSettings.java
index d085f9ce47ce..f5670a02dd33 100644
--- a/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/SecurityPostureStubSettings.java
+++ b/java-securityposture/google-cloud-securityposture/src/main/java/com/google/cloud/securityposture/v1/stub/SecurityPostureStubSettings.java
@@ -89,6 +89,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SecurityPostureStubSettings extends StubSettings<SecurityPostureStubSettings> {
diff --git a/java-securityposture/proto-google-cloud-securityposture-v1/src/main/java/com/google/cloud/securityposture/v1/OrganizationName.java b/java-securityposture/proto-google-cloud-securityposture-v1/src/main/java/com/google/cloud/securityposture/v1/OrganizationName.java
index 43dcce246840..4e0ed6a66ac5 100644
--- a/java-securityposture/proto-google-cloud-securityposture-v1/src/main/java/com/google/cloud/securityposture/v1/OrganizationName.java
+++ b/java-securityposture/proto-google-cloud-securityposture-v1/src/main/java/com/google/cloud/securityposture/v1/OrganizationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-securityposture/proto-google-cloud-securityposture-v1/src/main/java/com/google/cloud/securityposture/v1/PostureDeploymentName.java b/java-securityposture/proto-google-cloud-securityposture-v1/src/main/java/com/google/cloud/securityposture/v1/PostureDeploymentName.java
index 786b60a12543..c8329d6ac9e3 100644
--- a/java-securityposture/proto-google-cloud-securityposture-v1/src/main/java/com/google/cloud/securityposture/v1/PostureDeploymentName.java
+++ b/java-securityposture/proto-google-cloud-securityposture-v1/src/main/java/com/google/cloud/securityposture/v1/PostureDeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PostureDeploymentName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_POSTURE_DEPLOYMENT =
diff --git a/java-securityposture/proto-google-cloud-securityposture-v1/src/main/java/com/google/cloud/securityposture/v1/PostureName.java b/java-securityposture/proto-google-cloud-securityposture-v1/src/main/java/com/google/cloud/securityposture/v1/PostureName.java
index 00c94efa3a92..d3b20b185f22 100644
--- a/java-securityposture/proto-google-cloud-securityposture-v1/src/main/java/com/google/cloud/securityposture/v1/PostureName.java
+++ b/java-securityposture/proto-google-cloud-securityposture-v1/src/main/java/com/google/cloud/securityposture/v1/PostureName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PostureName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_POSTURE =
diff --git a/java-securityposture/proto-google-cloud-securityposture-v1/src/main/java/com/google/cloud/securityposture/v1/PostureTemplateName.java b/java-securityposture/proto-google-cloud-securityposture-v1/src/main/java/com/google/cloud/securityposture/v1/PostureTemplateName.java
index 3c5b3a69deec..c7a201518ed1 100644
--- a/java-securityposture/proto-google-cloud-securityposture-v1/src/main/java/com/google/cloud/securityposture/v1/PostureTemplateName.java
+++ b/java-securityposture/proto-google-cloud-securityposture-v1/src/main/java/com/google/cloud/securityposture/v1/PostureTemplateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PostureTemplateName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_POSTURE_TEMPLATE =
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/QuotaControllerClient.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/QuotaControllerClient.java
index 3da62709fbca..97cae2d6fdea 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/QuotaControllerClient.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/QuotaControllerClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -136,6 +137,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QuotaControllerClient implements BackgroundResource {
   private final QuotaControllerSettings settings;
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/QuotaControllerSettings.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/QuotaControllerSettings.java
index 7d619b3fd999..3d5c93ba76d3 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/QuotaControllerSettings.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/QuotaControllerSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QuotaControllerSettings extends ClientSettings<QuotaControllerSettings> {
 
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/ServiceControllerClient.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/ServiceControllerClient.java
index 57188c6ce0cd..a1b349d3e729 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/ServiceControllerClient.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/ServiceControllerClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceControllerClient implements BackgroundResource {
   private final ServiceControllerSettings settings;
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/ServiceControllerSettings.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/ServiceControllerSettings.java
index d70b56ce7140..7eb21adc2eb3 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/ServiceControllerSettings.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/ServiceControllerSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceControllerSettings extends ClientSettings<ServiceControllerSettings> {
 
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/GrpcQuotaControllerCallableFactory.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/GrpcQuotaControllerCallableFactory.java
index e9a7d3a261d1..1cd7752b1324 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/GrpcQuotaControllerCallableFactory.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/GrpcQuotaControllerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcQuotaControllerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/GrpcQuotaControllerStub.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/GrpcQuotaControllerStub.java
index 38b822dae3fa..192a90fff582 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/GrpcQuotaControllerStub.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/GrpcQuotaControllerStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcQuotaControllerStub extends QuotaControllerStub {
   private static final MethodDescriptor<AllocateQuotaRequest, AllocateQuotaResponse>
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/GrpcServiceControllerCallableFactory.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/GrpcServiceControllerCallableFactory.java
index bdd9664422fe..7e937ad638bf 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/GrpcServiceControllerCallableFactory.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/GrpcServiceControllerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServiceControllerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/GrpcServiceControllerStub.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/GrpcServiceControllerStub.java
index 2f13d45fb684..2662c6699bde 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/GrpcServiceControllerStub.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/GrpcServiceControllerStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServiceControllerStub extends ServiceControllerStub {
   private static final MethodDescriptor<CheckRequest, CheckResponse> checkMethodDescriptor =
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/HttpJsonQuotaControllerCallableFactory.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/HttpJsonQuotaControllerCallableFactory.java
index 5a8cd7fb5ff7..673d4a89188c 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/HttpJsonQuotaControllerCallableFactory.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/HttpJsonQuotaControllerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonQuotaControllerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/HttpJsonQuotaControllerStub.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/HttpJsonQuotaControllerStub.java
index 5fc782ed3f06..7af3ff21eb5b 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/HttpJsonQuotaControllerStub.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/HttpJsonQuotaControllerStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonQuotaControllerStub extends QuotaControllerStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/HttpJsonServiceControllerCallableFactory.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/HttpJsonServiceControllerCallableFactory.java
index ab6e428eab33..1b758dba4bba 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/HttpJsonServiceControllerCallableFactory.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/HttpJsonServiceControllerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServiceControllerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/HttpJsonServiceControllerStub.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/HttpJsonServiceControllerStub.java
index 66839bb870fd..978b312aaea9 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/HttpJsonServiceControllerStub.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/HttpJsonServiceControllerStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServiceControllerStub extends ServiceControllerStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/QuotaControllerStub.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/QuotaControllerStub.java
index bff25705359a..fca700df194e 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/QuotaControllerStub.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/QuotaControllerStub.java
@@ -21,6 +21,7 @@
 import com.google.api.servicecontrol.v1.AllocateQuotaRequest;
 import com.google.api.servicecontrol.v1.AllocateQuotaResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class QuotaControllerStub implements BackgroundResource {
 
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/QuotaControllerStubSettings.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/QuotaControllerStubSettings.java
index 7ee932ccfec3..e3a91320b711 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/QuotaControllerStubSettings.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/QuotaControllerStubSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class QuotaControllerStubSettings extends StubSettings<QuotaControllerStubSettings> {
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/ServiceControllerStub.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/ServiceControllerStub.java
index 3d3ef4c86f56..a4b3f7640162 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/ServiceControllerStub.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/ServiceControllerStub.java
@@ -23,6 +23,7 @@
 import com.google.api.servicecontrol.v1.ReportRequest;
 import com.google.api.servicecontrol.v1.ReportResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ServiceControllerStub implements BackgroundResource {
 
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/ServiceControllerStubSettings.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/ServiceControllerStubSettings.java
index 3088c75bb6ca..7c93e53d4024 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/ServiceControllerStubSettings.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v1/stub/ServiceControllerStubSettings.java
@@ -48,6 +48,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ServiceControllerStubSettings extends StubSettings<ServiceControllerStubSettings> {
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/ServiceControllerClient.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/ServiceControllerClient.java
index 393e80558819..839328464272 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/ServiceControllerClient.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/ServiceControllerClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -156,6 +157,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceControllerClient implements BackgroundResource {
   private final ServiceControllerSettings settings;
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/ServiceControllerSettings.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/ServiceControllerSettings.java
index caec904cfd10..0aa07fa879be 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/ServiceControllerSettings.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/ServiceControllerSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceControllerSettings extends ClientSettings<ServiceControllerSettings> {
 
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/GrpcServiceControllerCallableFactory.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/GrpcServiceControllerCallableFactory.java
index f0892cb9610c..3871a8d449f7 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/GrpcServiceControllerCallableFactory.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/GrpcServiceControllerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServiceControllerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/GrpcServiceControllerStub.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/GrpcServiceControllerStub.java
index 3065a46dfd82..efad4f175e3a 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/GrpcServiceControllerStub.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/GrpcServiceControllerStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServiceControllerStub extends ServiceControllerStub {
   private static final MethodDescriptor<CheckRequest, CheckResponse> checkMethodDescriptor =
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/HttpJsonServiceControllerCallableFactory.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/HttpJsonServiceControllerCallableFactory.java
index fb351eb4b77f..5579255486dc 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/HttpJsonServiceControllerCallableFactory.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/HttpJsonServiceControllerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServiceControllerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/HttpJsonServiceControllerStub.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/HttpJsonServiceControllerStub.java
index 3d51fd2586b6..0bd0f8dd18b4 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/HttpJsonServiceControllerStub.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/HttpJsonServiceControllerStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServiceControllerStub extends ServiceControllerStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/ServiceControllerStub.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/ServiceControllerStub.java
index e2502947f429..b8c2f6485144 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/ServiceControllerStub.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/ServiceControllerStub.java
@@ -23,6 +23,7 @@
 import com.google.api.servicecontrol.v2.ReportRequest;
 import com.google.api.servicecontrol.v2.ReportResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ServiceControllerStub implements BackgroundResource {
 
diff --git a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/ServiceControllerStubSettings.java b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/ServiceControllerStubSettings.java
index ca6fa525e1c1..57d8969da80f 100644
--- a/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/ServiceControllerStubSettings.java
+++ b/java-service-control/google-cloud-service-control/src/main/java/com/google/api/servicecontrol/v2/stub/ServiceControllerStubSettings.java
@@ -48,6 +48,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ServiceControllerStubSettings extends StubSettings<ServiceControllerStubSettings> {
diff --git a/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/ServiceManagerClient.java b/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/ServiceManagerClient.java
index 85a91e7a45ee..5f42e707957f 100644
--- a/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/ServiceManagerClient.java
+++ b/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/ServiceManagerClient.java
@@ -67,6 +67,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -452,6 +453,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceManagerClient implements BackgroundResource {
   private final ServiceManagerSettings settings;
diff --git a/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/ServiceManagerSettings.java b/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/ServiceManagerSettings.java
index c8a60b81c068..f2c583264884 100644
--- a/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/ServiceManagerSettings.java
+++ b/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/ServiceManagerSettings.java
@@ -67,6 +67,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -145,6 +146,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceManagerSettings extends ClientSettings<ServiceManagerSettings> {
 
diff --git a/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/GrpcServiceManagerCallableFactory.java b/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/GrpcServiceManagerCallableFactory.java
index 11d145437f86..f6de949c2429 100644
--- a/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/GrpcServiceManagerCallableFactory.java
+++ b/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/GrpcServiceManagerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServiceManagerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/GrpcServiceManagerStub.java b/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/GrpcServiceManagerStub.java
index 6636dbb56f6c..0d14af31136f 100644
--- a/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/GrpcServiceManagerStub.java
+++ b/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/GrpcServiceManagerStub.java
@@ -64,6 +64,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServiceManagerStub extends ServiceManagerStub {
   private static final MethodDescriptor<ListServicesRequest, ListServicesResponse>
diff --git a/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/HttpJsonServiceManagerCallableFactory.java b/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/HttpJsonServiceManagerCallableFactory.java
index 75c37badcac0..4f92dbea3ca0 100644
--- a/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/HttpJsonServiceManagerCallableFactory.java
+++ b/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/HttpJsonServiceManagerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServiceManagerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/HttpJsonServiceManagerStub.java b/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/HttpJsonServiceManagerStub.java
index db53b8db52de..33dea3953d37 100644
--- a/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/HttpJsonServiceManagerStub.java
+++ b/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/HttpJsonServiceManagerStub.java
@@ -75,6 +75,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServiceManagerStub extends ServiceManagerStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/ServiceManagerStub.java b/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/ServiceManagerStub.java
index 2421204fe94b..7e02e55d46fa 100644
--- a/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/ServiceManagerStub.java
+++ b/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/ServiceManagerStub.java
@@ -55,6 +55,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ServiceManagerStub implements BackgroundResource {
 
diff --git a/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/ServiceManagerStubSettings.java b/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/ServiceManagerStubSettings.java
index 40ffba879ef7..20a515b238bf 100644
--- a/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/ServiceManagerStubSettings.java
+++ b/java-service-management/google-cloud-service-management/src/main/java/com/google/cloud/api/servicemanagement/v1/stub/ServiceManagerStubSettings.java
@@ -89,6 +89,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ServiceManagerStubSettings extends StubSettings<ServiceManagerStubSettings> {
diff --git a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/ServiceUsageClient.java b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/ServiceUsageClient.java
index d9a33c81841b..6e5160e6ba48 100644
--- a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/ServiceUsageClient.java
+++ b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/ServiceUsageClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -214,6 +215,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceUsageClient implements BackgroundResource {
   private final ServiceUsageSettings settings;
diff --git a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/ServiceUsageSettings.java b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/ServiceUsageSettings.java
index 2ef69c4a11e6..62dfdcacf6c3 100644
--- a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/ServiceUsageSettings.java
+++ b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/ServiceUsageSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceUsageSettings extends ClientSettings<ServiceUsageSettings> {
 
diff --git a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/GrpcServiceUsageCallableFactory.java b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/GrpcServiceUsageCallableFactory.java
index abc466830ba4..6bd1ecd57452 100644
--- a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/GrpcServiceUsageCallableFactory.java
+++ b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/GrpcServiceUsageCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServiceUsageCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/GrpcServiceUsageStub.java b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/GrpcServiceUsageStub.java
index 14c2303db8d9..0cf5cf1a802a 100644
--- a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/GrpcServiceUsageStub.java
+++ b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/GrpcServiceUsageStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServiceUsageStub extends ServiceUsageStub {
   private static final MethodDescriptor<EnableServiceRequest, Operation>
diff --git a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/HttpJsonServiceUsageCallableFactory.java b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/HttpJsonServiceUsageCallableFactory.java
index 6c6d43617d03..498636d96362 100644
--- a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/HttpJsonServiceUsageCallableFactory.java
+++ b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/HttpJsonServiceUsageCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServiceUsageCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/HttpJsonServiceUsageStub.java b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/HttpJsonServiceUsageStub.java
index 053cde4e1fa6..59e6038fa0c6 100644
--- a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/HttpJsonServiceUsageStub.java
+++ b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/HttpJsonServiceUsageStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServiceUsageStub extends ServiceUsageStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/ServiceUsageStub.java b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/ServiceUsageStub.java
index 38611c3f86f3..21f1d3c9febc 100644
--- a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/ServiceUsageStub.java
+++ b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/ServiceUsageStub.java
@@ -37,6 +37,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ServiceUsageStub implements BackgroundResource {
 
diff --git a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/ServiceUsageStubSettings.java b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/ServiceUsageStubSettings.java
index c21bacc39a49..4f307e40470b 100644
--- a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/ServiceUsageStubSettings.java
+++ b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1/stub/ServiceUsageStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ServiceUsageStubSettings extends StubSettings<ServiceUsageStubSettings> {
diff --git a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/ServiceUsageClient.java b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/ServiceUsageClient.java
index 671366a853fe..3da4bd4ac685 100644
--- a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/ServiceUsageClient.java
+++ b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/ServiceUsageClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -407,6 +408,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ServiceUsageClient implements BackgroundResource {
diff --git a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/ServiceUsageSettings.java b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/ServiceUsageSettings.java
index d3b51251a62a..42e8233b3cf5 100644
--- a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/ServiceUsageSettings.java
+++ b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/ServiceUsageSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ServiceUsageSettings extends ClientSettings<ServiceUsageSettings> {
diff --git a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/GrpcServiceUsageCallableFactory.java b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/GrpcServiceUsageCallableFactory.java
index 77d4fb64d20a..880b7d28bfe7 100644
--- a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/GrpcServiceUsageCallableFactory.java
+++ b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/GrpcServiceUsageCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcServiceUsageCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/GrpcServiceUsageStub.java b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/GrpcServiceUsageStub.java
index 391e49053d4b..e8f28b685149 100644
--- a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/GrpcServiceUsageStub.java
+++ b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/GrpcServiceUsageStub.java
@@ -71,6 +71,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -78,6 +79,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcServiceUsageStub extends ServiceUsageStub {
diff --git a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/HttpJsonServiceUsageCallableFactory.java b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/HttpJsonServiceUsageCallableFactory.java
index 38c8ec5536d4..28c1424238a8 100644
--- a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/HttpJsonServiceUsageCallableFactory.java
+++ b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/HttpJsonServiceUsageCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonServiceUsageCallableFactory
diff --git a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/HttpJsonServiceUsageStub.java b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/HttpJsonServiceUsageStub.java
index 5effb407531a..adbaa7f4249a 100644
--- a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/HttpJsonServiceUsageStub.java
+++ b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/HttpJsonServiceUsageStub.java
@@ -82,6 +82,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonServiceUsageStub extends ServiceUsageStub {
diff --git a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/ServiceUsageStub.java b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/ServiceUsageStub.java
index 3778e9fbae90..607605bb77c9 100644
--- a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/ServiceUsageStub.java
+++ b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/ServiceUsageStub.java
@@ -62,6 +62,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ServiceUsageStub implements BackgroundResource {
diff --git a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/ServiceUsageStubSettings.java b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/ServiceUsageStubSettings.java
index aed4b2a311cc..445cd215f70b 100644
--- a/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/ServiceUsageStubSettings.java
+++ b/java-service-usage/google-cloud-service-usage/src/main/java/com/google/api/serviceusage/v1beta1/stub/ServiceUsageStubSettings.java
@@ -95,6 +95,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -172,6 +173,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/LookupServiceClient.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/LookupServiceClient.java
index 82cd78cb3675..f31d847eb86a 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/LookupServiceClient.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/LookupServiceClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -169,6 +170,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LookupServiceClient implements BackgroundResource {
   private final LookupServiceSettings settings;
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/LookupServiceSettings.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/LookupServiceSettings.java
index 1db8b48234af..8415f0d9faeb 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/LookupServiceSettings.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/LookupServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LookupServiceSettings extends ClientSettings<LookupServiceSettings> {
 
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/RegistrationServiceClient.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/RegistrationServiceClient.java
index b1e89b98e898..e09f5d8c2145 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/RegistrationServiceClient.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/RegistrationServiceClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -501,6 +502,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegistrationServiceClient implements BackgroundResource {
   private final RegistrationServiceSettings settings;
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/RegistrationServiceSettings.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/RegistrationServiceSettings.java
index b5167047c346..f6e6f58e7d67 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/RegistrationServiceSettings.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/RegistrationServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegistrationServiceSettings extends ClientSettings<RegistrationServiceSettings> {
 
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/GrpcLookupServiceCallableFactory.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/GrpcLookupServiceCallableFactory.java
index 7b8f70028505..52f4e93b8a4d 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/GrpcLookupServiceCallableFactory.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/GrpcLookupServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLookupServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/GrpcLookupServiceStub.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/GrpcLookupServiceStub.java
index f603b18cefd4..dddcdecb0f38 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/GrpcLookupServiceStub.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/GrpcLookupServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLookupServiceStub extends LookupServiceStub {
   private static final MethodDescriptor<ResolveServiceRequest, ResolveServiceResponse>
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/GrpcRegistrationServiceCallableFactory.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/GrpcRegistrationServiceCallableFactory.java
index c4837bb8c07a..78fdd3387181 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/GrpcRegistrationServiceCallableFactory.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/GrpcRegistrationServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRegistrationServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/GrpcRegistrationServiceStub.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/GrpcRegistrationServiceStub.java
index 337113607557..a3dedf4e822c 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/GrpcRegistrationServiceStub.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/GrpcRegistrationServiceStub.java
@@ -65,6 +65,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRegistrationServiceStub extends RegistrationServiceStub {
   private static final MethodDescriptor<CreateNamespaceRequest, Namespace>
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/HttpJsonLookupServiceCallableFactory.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/HttpJsonLookupServiceCallableFactory.java
index 2bd68f3e9fd9..46ad4c4d9f6a 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/HttpJsonLookupServiceCallableFactory.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/HttpJsonLookupServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLookupServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/HttpJsonLookupServiceStub.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/HttpJsonLookupServiceStub.java
index 1171d025face..1bef8e9d801d 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/HttpJsonLookupServiceStub.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/HttpJsonLookupServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLookupServiceStub extends LookupServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/HttpJsonRegistrationServiceCallableFactory.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/HttpJsonRegistrationServiceCallableFactory.java
index 086978c0ccc3..0da875985fd8 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/HttpJsonRegistrationServiceCallableFactory.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/HttpJsonRegistrationServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegistrationServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/HttpJsonRegistrationServiceStub.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/HttpJsonRegistrationServiceStub.java
index 6413be8f4bf1..7c045527b02b 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/HttpJsonRegistrationServiceStub.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/HttpJsonRegistrationServiceStub.java
@@ -72,6 +72,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -79,6 +80,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegistrationServiceStub extends RegistrationServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/LookupServiceStub.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/LookupServiceStub.java
index d2a2f281562f..fc076f263a4c 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/LookupServiceStub.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/LookupServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.cloud.servicedirectory.v1.ResolveServiceRequest;
 import com.google.cloud.servicedirectory.v1.ResolveServiceResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LookupServiceStub implements BackgroundResource {
 
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/LookupServiceStubSettings.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/LookupServiceStubSettings.java
index 5eea8b057a14..961c98f76e1b 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/LookupServiceStubSettings.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/LookupServiceStubSettings.java
@@ -59,6 +59,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LookupServiceStubSettings extends StubSettings<LookupServiceStubSettings> {
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/RegistrationServiceStub.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/RegistrationServiceStub.java
index 0d8df4b34876..ef6de7a93062 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/RegistrationServiceStub.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/RegistrationServiceStub.java
@@ -55,6 +55,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegistrationServiceStub implements BackgroundResource {
 
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/RegistrationServiceStubSettings.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/RegistrationServiceStubSettings.java
index 718a8e4945f6..cd78eec069cb 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/RegistrationServiceStubSettings.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1/stub/RegistrationServiceStubSettings.java
@@ -87,6 +87,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -140,6 +141,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegistrationServiceStubSettings extends StubSettings<RegistrationServiceStubSettings> {
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/LookupServiceClient.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/LookupServiceClient.java
index de68b93fe477..95063bf497af 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/LookupServiceClient.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/LookupServiceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -170,6 +171,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LookupServiceClient implements BackgroundResource {
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/LookupServiceSettings.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/LookupServiceSettings.java
index 418f66cb4666..f1a475149d6c 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/LookupServiceSettings.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/LookupServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LookupServiceSettings extends ClientSettings<LookupServiceSettings> {
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/RegistrationServiceClient.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/RegistrationServiceClient.java
index f3ede6acfe69..9861db17fbb5 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/RegistrationServiceClient.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/RegistrationServiceClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -502,6 +503,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class RegistrationServiceClient implements BackgroundResource {
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/RegistrationServiceSettings.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/RegistrationServiceSettings.java
index 6d5ec7b14582..b269c6403ba8 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/RegistrationServiceSettings.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/RegistrationServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class RegistrationServiceSettings extends ClientSettings<RegistrationServiceSettings> {
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/GrpcLookupServiceCallableFactory.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/GrpcLookupServiceCallableFactory.java
index 27592df9c155..b96699584796 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/GrpcLookupServiceCallableFactory.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/GrpcLookupServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLookupServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/GrpcLookupServiceStub.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/GrpcLookupServiceStub.java
index 9000c4b7cd4c..c2d2f37082a1 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/GrpcLookupServiceStub.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/GrpcLookupServiceStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLookupServiceStub extends LookupServiceStub {
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/GrpcRegistrationServiceCallableFactory.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/GrpcRegistrationServiceCallableFactory.java
index 8100edea616f..8e1b1df25382 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/GrpcRegistrationServiceCallableFactory.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/GrpcRegistrationServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcRegistrationServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/GrpcRegistrationServiceStub.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/GrpcRegistrationServiceStub.java
index a4945c22631f..028fce9771b8 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/GrpcRegistrationServiceStub.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/GrpcRegistrationServiceStub.java
@@ -66,6 +66,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcRegistrationServiceStub extends RegistrationServiceStub {
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/HttpJsonLookupServiceCallableFactory.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/HttpJsonLookupServiceCallableFactory.java
index 969953e35a89..e9b9a701269d 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/HttpJsonLookupServiceCallableFactory.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/HttpJsonLookupServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonLookupServiceCallableFactory
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/HttpJsonLookupServiceStub.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/HttpJsonLookupServiceStub.java
index 45406e5edbeb..552fbc46ea48 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/HttpJsonLookupServiceStub.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/HttpJsonLookupServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonLookupServiceStub extends LookupServiceStub {
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/HttpJsonRegistrationServiceCallableFactory.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/HttpJsonRegistrationServiceCallableFactory.java
index d17be7796485..5f8ac09cafd2 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/HttpJsonRegistrationServiceCallableFactory.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/HttpJsonRegistrationServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonRegistrationServiceCallableFactory
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/HttpJsonRegistrationServiceStub.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/HttpJsonRegistrationServiceStub.java
index 26993bfe3695..ec61f2f38287 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/HttpJsonRegistrationServiceStub.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/HttpJsonRegistrationServiceStub.java
@@ -73,6 +73,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -80,6 +81,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonRegistrationServiceStub extends RegistrationServiceStub {
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/LookupServiceStub.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/LookupServiceStub.java
index bd9b03421855..90cd68ad14b3 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/LookupServiceStub.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/LookupServiceStub.java
@@ -28,6 +28,7 @@
 import com.google.cloud.servicedirectory.v1beta1.ResolveServiceRequest;
 import com.google.cloud.servicedirectory.v1beta1.ResolveServiceResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class LookupServiceStub implements BackgroundResource {
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/LookupServiceStubSettings.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/LookupServiceStubSettings.java
index 0286f7a9d477..7b5ffa6a3a3b 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/LookupServiceStubSettings.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/LookupServiceStubSettings.java
@@ -59,6 +59,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/RegistrationServiceStub.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/RegistrationServiceStub.java
index 70f31b047a47..a520cae33ded 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/RegistrationServiceStub.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/RegistrationServiceStub.java
@@ -56,6 +56,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class RegistrationServiceStub implements BackgroundResource {
diff --git a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/RegistrationServiceStubSettings.java b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/RegistrationServiceStubSettings.java
index 2991a34990eb..852ac191c8ee 100644
--- a/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/RegistrationServiceStubSettings.java
+++ b/java-servicedirectory/google-cloud-servicedirectory/src/main/java/com/google/cloud/servicedirectory/v1beta1/stub/RegistrationServiceStubSettings.java
@@ -87,6 +87,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -140,6 +141,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-servicedirectory/proto-google-cloud-servicedirectory-v1/src/main/java/com/google/cloud/servicedirectory/v1/EndpointName.java b/java-servicedirectory/proto-google-cloud-servicedirectory-v1/src/main/java/com/google/cloud/servicedirectory/v1/EndpointName.java
index ece6ef0920d4..da7ce15c983c 100644
--- a/java-servicedirectory/proto-google-cloud-servicedirectory-v1/src/main/java/com/google/cloud/servicedirectory/v1/EndpointName.java
+++ b/java-servicedirectory/proto-google-cloud-servicedirectory-v1/src/main/java/com/google/cloud/servicedirectory/v1/EndpointName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EndpointName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NAMESPACE_SERVICE_ENDPOINT =
diff --git a/java-servicedirectory/proto-google-cloud-servicedirectory-v1/src/main/java/com/google/cloud/servicedirectory/v1/LocationName.java b/java-servicedirectory/proto-google-cloud-servicedirectory-v1/src/main/java/com/google/cloud/servicedirectory/v1/LocationName.java
index 8531cdc92711..7dd0c5769720 100644
--- a/java-servicedirectory/proto-google-cloud-servicedirectory-v1/src/main/java/com/google/cloud/servicedirectory/v1/LocationName.java
+++ b/java-servicedirectory/proto-google-cloud-servicedirectory-v1/src/main/java/com/google/cloud/servicedirectory/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-servicedirectory/proto-google-cloud-servicedirectory-v1/src/main/java/com/google/cloud/servicedirectory/v1/NamespaceName.java b/java-servicedirectory/proto-google-cloud-servicedirectory-v1/src/main/java/com/google/cloud/servicedirectory/v1/NamespaceName.java
index 4c0403da1c20..91545029fce3 100644
--- a/java-servicedirectory/proto-google-cloud-servicedirectory-v1/src/main/java/com/google/cloud/servicedirectory/v1/NamespaceName.java
+++ b/java-servicedirectory/proto-google-cloud-servicedirectory-v1/src/main/java/com/google/cloud/servicedirectory/v1/NamespaceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NamespaceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NAMESPACE =
diff --git a/java-servicedirectory/proto-google-cloud-servicedirectory-v1/src/main/java/com/google/cloud/servicedirectory/v1/ServiceName.java b/java-servicedirectory/proto-google-cloud-servicedirectory-v1/src/main/java/com/google/cloud/servicedirectory/v1/ServiceName.java
index cd50ec2abdff..54419de0e632 100644
--- a/java-servicedirectory/proto-google-cloud-servicedirectory-v1/src/main/java/com/google/cloud/servicedirectory/v1/ServiceName.java
+++ b/java-servicedirectory/proto-google-cloud-servicedirectory-v1/src/main/java/com/google/cloud/servicedirectory/v1/ServiceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NAMESPACE_SERVICE =
diff --git a/java-servicedirectory/proto-google-cloud-servicedirectory-v1beta1/src/main/java/com/google/cloud/servicedirectory/v1beta1/EndpointName.java b/java-servicedirectory/proto-google-cloud-servicedirectory-v1beta1/src/main/java/com/google/cloud/servicedirectory/v1beta1/EndpointName.java
index 90d3fcb13df8..d44bb1881628 100644
--- a/java-servicedirectory/proto-google-cloud-servicedirectory-v1beta1/src/main/java/com/google/cloud/servicedirectory/v1beta1/EndpointName.java
+++ b/java-servicedirectory/proto-google-cloud-servicedirectory-v1beta1/src/main/java/com/google/cloud/servicedirectory/v1beta1/EndpointName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EndpointName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NAMESPACE_SERVICE_ENDPOINT =
diff --git a/java-servicedirectory/proto-google-cloud-servicedirectory-v1beta1/src/main/java/com/google/cloud/servicedirectory/v1beta1/LocationName.java b/java-servicedirectory/proto-google-cloud-servicedirectory-v1beta1/src/main/java/com/google/cloud/servicedirectory/v1beta1/LocationName.java
index b5a4af806c1f..3fe1582b4a91 100644
--- a/java-servicedirectory/proto-google-cloud-servicedirectory-v1beta1/src/main/java/com/google/cloud/servicedirectory/v1beta1/LocationName.java
+++ b/java-servicedirectory/proto-google-cloud-servicedirectory-v1beta1/src/main/java/com/google/cloud/servicedirectory/v1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-servicedirectory/proto-google-cloud-servicedirectory-v1beta1/src/main/java/com/google/cloud/servicedirectory/v1beta1/NamespaceName.java b/java-servicedirectory/proto-google-cloud-servicedirectory-v1beta1/src/main/java/com/google/cloud/servicedirectory/v1beta1/NamespaceName.java
index 0d1392e23a6c..0562ee37fcbc 100644
--- a/java-servicedirectory/proto-google-cloud-servicedirectory-v1beta1/src/main/java/com/google/cloud/servicedirectory/v1beta1/NamespaceName.java
+++ b/java-servicedirectory/proto-google-cloud-servicedirectory-v1beta1/src/main/java/com/google/cloud/servicedirectory/v1beta1/NamespaceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NamespaceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NAMESPACE =
diff --git a/java-servicedirectory/proto-google-cloud-servicedirectory-v1beta1/src/main/java/com/google/cloud/servicedirectory/v1beta1/ServiceName.java b/java-servicedirectory/proto-google-cloud-servicedirectory-v1beta1/src/main/java/com/google/cloud/servicedirectory/v1beta1/ServiceName.java
index 5a471219d804..32aa089af6b7 100644
--- a/java-servicedirectory/proto-google-cloud-servicedirectory-v1beta1/src/main/java/com/google/cloud/servicedirectory/v1beta1/ServiceName.java
+++ b/java-servicedirectory/proto-google-cloud-servicedirectory-v1beta1/src/main/java/com/google/cloud/servicedirectory/v1beta1/ServiceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NAMESPACE_SERVICE =
diff --git a/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/ServiceHealthClient.java b/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/ServiceHealthClient.java
index 909ba8fb14ec..6d7917d7a331 100644
--- a/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/ServiceHealthClient.java
+++ b/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/ServiceHealthClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -266,6 +267,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceHealthClient implements BackgroundResource {
   private final ServiceHealthSettings settings;
diff --git a/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/ServiceHealthSettings.java b/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/ServiceHealthSettings.java
index a9b293d20dc2..f229b684fc4d 100644
--- a/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/ServiceHealthSettings.java
+++ b/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/ServiceHealthSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ServiceHealthSettings extends ClientSettings<ServiceHealthSettings> {
 
diff --git a/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/GrpcServiceHealthCallableFactory.java b/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/GrpcServiceHealthCallableFactory.java
index 39b357362739..ee87aa239a12 100644
--- a/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/GrpcServiceHealthCallableFactory.java
+++ b/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/GrpcServiceHealthCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServiceHealthCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/GrpcServiceHealthStub.java b/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/GrpcServiceHealthStub.java
index 1b90a998d34a..fd90739bb2ae 100644
--- a/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/GrpcServiceHealthStub.java
+++ b/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/GrpcServiceHealthStub.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcServiceHealthStub extends ServiceHealthStub {
   private static final MethodDescriptor<ListEventsRequest, ListEventsResponse>
diff --git a/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/HttpJsonServiceHealthCallableFactory.java b/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/HttpJsonServiceHealthCallableFactory.java
index 3c5d87ce5e23..1c05c0725686 100644
--- a/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/HttpJsonServiceHealthCallableFactory.java
+++ b/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/HttpJsonServiceHealthCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServiceHealthCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/HttpJsonServiceHealthStub.java b/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/HttpJsonServiceHealthStub.java
index cc8a881d6281..cbc2eec0425c 100644
--- a/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/HttpJsonServiceHealthStub.java
+++ b/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/HttpJsonServiceHealthStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonServiceHealthStub extends ServiceHealthStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/ServiceHealthStub.java b/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/ServiceHealthStub.java
index 153ac48b787a..3765335163aa 100644
--- a/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/ServiceHealthStub.java
+++ b/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/ServiceHealthStub.java
@@ -40,6 +40,7 @@
 import com.google.cloud.servicehealth.v1.OrganizationEvent;
 import com.google.cloud.servicehealth.v1.OrganizationImpact;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ServiceHealthStub implements BackgroundResource {
 
diff --git a/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/ServiceHealthStubSettings.java b/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/ServiceHealthStubSettings.java
index 334c05d91404..77358aa39f98 100644
--- a/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/ServiceHealthStubSettings.java
+++ b/java-servicehealth/google-cloud-servicehealth/src/main/java/com/google/cloud/servicehealth/v1/stub/ServiceHealthStubSettings.java
@@ -72,6 +72,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ServiceHealthStubSettings extends StubSettings<ServiceHealthStubSettings> {
diff --git a/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/EventName.java b/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/EventName.java
index c56d716848d2..11a1f0afa75b 100644
--- a/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/EventName.java
+++ b/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/EventName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EventName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_EVENT =
diff --git a/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/LocationName.java b/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/LocationName.java
index 7e5481954ef8..66782674a60c 100644
--- a/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/LocationName.java
+++ b/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/OrganizationEventName.java b/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/OrganizationEventName.java
index 643412680c57..cd5cc1d08764 100644
--- a/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/OrganizationEventName.java
+++ b/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/OrganizationEventName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationEventName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_EVENT =
diff --git a/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/OrganizationImpactName.java b/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/OrganizationImpactName.java
index fae1ebd926af..be1efd4feb6d 100644
--- a/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/OrganizationImpactName.java
+++ b/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/OrganizationImpactName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationImpactName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION_ORGANIZATION_IMPACT =
diff --git a/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/OrganizationLocationName.java b/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/OrganizationLocationName.java
index 3b91fdef9986..556c7fa1067a 100644
--- a/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/OrganizationLocationName.java
+++ b/java-servicehealth/proto-google-cloud-servicehealth-v1/src/main/java/com/google/cloud/servicehealth/v1/OrganizationLocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrganizationLocationName implements ResourceName {
   private static final PathTemplate ORGANIZATION_LOCATION =
diff --git a/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/CloudShellServiceClient.java b/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/CloudShellServiceClient.java
index f61453f9a7bd..7ed3f56d7c89 100644
--- a/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/CloudShellServiceClient.java
+++ b/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/CloudShellServiceClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -200,6 +201,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudShellServiceClient implements BackgroundResource {
   private final CloudShellServiceSettings settings;
diff --git a/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/CloudShellServiceSettings.java b/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/CloudShellServiceSettings.java
index ea0530c7b8e7..859b05fdf985 100644
--- a/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/CloudShellServiceSettings.java
+++ b/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/CloudShellServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudShellServiceSettings extends ClientSettings<CloudShellServiceSettings> {
 
diff --git a/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/CloudShellServiceStub.java b/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/CloudShellServiceStub.java
index d02ba8e957d3..f1828d6d87ad 100644
--- a/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/CloudShellServiceStub.java
+++ b/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/CloudShellServiceStub.java
@@ -36,6 +36,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CloudShellServiceStub implements BackgroundResource {
 
diff --git a/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/CloudShellServiceStubSettings.java b/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/CloudShellServiceStubSettings.java
index 9c83bd15cdbe..1c6ea309f26f 100644
--- a/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/CloudShellServiceStubSettings.java
+++ b/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/CloudShellServiceStubSettings.java
@@ -63,6 +63,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CloudShellServiceStubSettings extends StubSettings<CloudShellServiceStubSettings> {
diff --git a/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/GrpcCloudShellServiceCallableFactory.java b/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/GrpcCloudShellServiceCallableFactory.java
index 5188b9a85531..f99d61a480c9 100644
--- a/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/GrpcCloudShellServiceCallableFactory.java
+++ b/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/GrpcCloudShellServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudShellServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/GrpcCloudShellServiceStub.java b/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/GrpcCloudShellServiceStub.java
index 528a12b7c633..f5a809e92bf4 100644
--- a/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/GrpcCloudShellServiceStub.java
+++ b/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/GrpcCloudShellServiceStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudShellServiceStub extends CloudShellServiceStub {
   private static final MethodDescriptor<GetEnvironmentRequest, Environment>
diff --git a/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/HttpJsonCloudShellServiceCallableFactory.java b/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/HttpJsonCloudShellServiceCallableFactory.java
index 9dffc52b55c2..79540dbcaa0a 100644
--- a/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/HttpJsonCloudShellServiceCallableFactory.java
+++ b/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/HttpJsonCloudShellServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudShellServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/HttpJsonCloudShellServiceStub.java b/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/HttpJsonCloudShellServiceStub.java
index 93ebee394859..cb4f67b410d9 100644
--- a/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/HttpJsonCloudShellServiceStub.java
+++ b/java-shell/google-cloud-shell/src/main/java/com/google/cloud/shell/v1/stub/HttpJsonCloudShellServiceStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudShellServiceStub extends CloudShellServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-shell/proto-google-cloud-shell-v1/src/main/java/com/google/cloud/shell/v1/EnvironmentName.java b/java-shell/proto-google-cloud-shell-v1/src/main/java/com/google/cloud/shell/v1/EnvironmentName.java
index f6cfc896cc2f..e1b210adfcd3 100644
--- a/java-shell/proto-google-cloud-shell-v1/src/main/java/com/google/cloud/shell/v1/EnvironmentName.java
+++ b/java-shell/proto-google-cloud-shell-v1/src/main/java/com/google/cloud/shell/v1/EnvironmentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EnvironmentName implements ResourceName {
   private static final PathTemplate USER_ENVIRONMENT =
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/AccountLabelsServiceClient.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/AccountLabelsServiceClient.java
index 2bd28a64c137..1dc5ddd58525 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/AccountLabelsServiceClient.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/AccountLabelsServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -199,6 +200,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountLabelsServiceClient implements BackgroundResource {
   private final AccountLabelsServiceSettings settings;
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/AccountLabelsServiceSettings.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/AccountLabelsServiceSettings.java
index edb4c5a5af8e..d7d58d94994d 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/AccountLabelsServiceSettings.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/AccountLabelsServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountLabelsServiceSettings extends ClientSettings<AccountLabelsServiceSettings> {
 
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/AccountsServiceClient.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/AccountsServiceClient.java
index 37d6e045587e..c4013ba13134 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/AccountsServiceClient.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/AccountsServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -178,6 +179,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountsServiceClient implements BackgroundResource {
   private final AccountsServiceSettings settings;
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/AccountsServiceSettings.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/AccountsServiceSettings.java
index efe340853d76..2fc0aed821a1 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/AccountsServiceSettings.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/AccountsServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountsServiceSettings extends ClientSettings<AccountsServiceSettings> {
 
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/CssProductInputsServiceClient.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/CssProductInputsServiceClient.java
index 82fdfb485894..6e6985931da3 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/CssProductInputsServiceClient.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/CssProductInputsServiceClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -175,6 +176,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CssProductInputsServiceClient implements BackgroundResource {
   private final CssProductInputsServiceSettings settings;
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/CssProductInputsServiceSettings.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/CssProductInputsServiceSettings.java
index 455fecc59a07..cc5ba1d4a10b 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/CssProductInputsServiceSettings.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/CssProductInputsServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CssProductInputsServiceSettings
     extends ClientSettings<CssProductInputsServiceSettings> {
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/CssProductsServiceClient.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/CssProductsServiceClient.java
index 88ab53e7ce17..ddac0d9b6087 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/CssProductsServiceClient.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/CssProductsServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -161,6 +162,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CssProductsServiceClient implements BackgroundResource {
   private final CssProductsServiceSettings settings;
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/CssProductsServiceSettings.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/CssProductsServiceSettings.java
index 18b8a71b6d16..18a9be44de8d 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/CssProductsServiceSettings.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/CssProductsServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CssProductsServiceSettings extends ClientSettings<CssProductsServiceSettings> {
 
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/QuotaServiceClient.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/QuotaServiceClient.java
index 13218dd9d9a8..739e89731f8d 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/QuotaServiceClient.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/QuotaServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QuotaServiceClient implements BackgroundResource {
   private final QuotaServiceSettings settings;
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/QuotaServiceSettings.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/QuotaServiceSettings.java
index c9be2bae9290..06336445b386 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/QuotaServiceSettings.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/QuotaServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QuotaServiceSettings extends ClientSettings<QuotaServiceSettings> {
 
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/AccountLabelsServiceStub.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/AccountLabelsServiceStub.java
index f12ba73dc55c..6840e5ba05d4 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/AccountLabelsServiceStub.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/AccountLabelsServiceStub.java
@@ -28,6 +28,7 @@
 import com.google.shopping.css.v1.ListAccountLabelsResponse;
 import com.google.shopping.css.v1.UpdateAccountLabelRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AccountLabelsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/AccountLabelsServiceStubSettings.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/AccountLabelsServiceStubSettings.java
index 2cb71099bbd9..83cd80afd0e6 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/AccountLabelsServiceStubSettings.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/AccountLabelsServiceStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AccountLabelsServiceStubSettings
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/AccountsServiceStub.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/AccountsServiceStub.java
index 85de6ad94d33..09a0c7341630 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/AccountsServiceStub.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/AccountsServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.shopping.css.v1.ListChildAccountsResponse;
 import com.google.shopping.css.v1.UpdateAccountLabelsRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AccountsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/AccountsServiceStubSettings.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/AccountsServiceStubSettings.java
index d5317bd56777..49b8e992c499 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/AccountsServiceStubSettings.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/AccountsServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AccountsServiceStubSettings extends StubSettings<AccountsServiceStubSettings> {
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/CssProductInputsServiceStub.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/CssProductInputsServiceStub.java
index 26628ddcb68a..fc54cb1d5c5b 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/CssProductInputsServiceStub.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/CssProductInputsServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.shopping.css.v1.InsertCssProductInputRequest;
 import com.google.shopping.css.v1.UpdateCssProductInputRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CssProductInputsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/CssProductInputsServiceStubSettings.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/CssProductInputsServiceStubSettings.java
index da93f22b42e9..c7c87550dc56 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/CssProductInputsServiceStubSettings.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/CssProductInputsServiceStubSettings.java
@@ -49,6 +49,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CssProductInputsServiceStubSettings
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/CssProductsServiceStub.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/CssProductsServiceStub.java
index b176b3cff0f1..57cc926f7a7f 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/CssProductsServiceStub.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/CssProductsServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.shopping.css.v1.ListCssProductsRequest;
 import com.google.shopping.css.v1.ListCssProductsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CssProductsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/CssProductsServiceStubSettings.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/CssProductsServiceStubSettings.java
index e0c718637124..221828c15abf 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/CssProductsServiceStubSettings.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/CssProductsServiceStubSettings.java
@@ -57,6 +57,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CssProductsServiceStubSettings extends StubSettings<CssProductsServiceStubSettings> {
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcAccountLabelsServiceCallableFactory.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcAccountLabelsServiceCallableFactory.java
index bcf558623556..5a0758cf6869 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcAccountLabelsServiceCallableFactory.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcAccountLabelsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAccountLabelsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcAccountLabelsServiceStub.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcAccountLabelsServiceStub.java
index e120461eb7e6..d93a1b6ef6b7 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcAccountLabelsServiceStub.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcAccountLabelsServiceStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAccountLabelsServiceStub extends AccountLabelsServiceStub {
   private static final MethodDescriptor<ListAccountLabelsRequest, ListAccountLabelsResponse>
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcAccountsServiceCallableFactory.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcAccountsServiceCallableFactory.java
index 5179ca287d21..9e3ff8360a5c 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcAccountsServiceCallableFactory.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcAccountsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAccountsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcAccountsServiceStub.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcAccountsServiceStub.java
index a3c8c62ff9f5..87a3c5f439e5 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcAccountsServiceStub.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcAccountsServiceStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAccountsServiceStub extends AccountsServiceStub {
   private static final MethodDescriptor<ListChildAccountsRequest, ListChildAccountsResponse>
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcCssProductInputsServiceCallableFactory.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcCssProductInputsServiceCallableFactory.java
index b7c43f7160b1..6d1cf346a811 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcCssProductInputsServiceCallableFactory.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcCssProductInputsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCssProductInputsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcCssProductInputsServiceStub.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcCssProductInputsServiceStub.java
index 79c3b2b112bd..91214b3b90b2 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcCssProductInputsServiceStub.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcCssProductInputsServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCssProductInputsServiceStub extends CssProductInputsServiceStub {
   private static final MethodDescriptor<InsertCssProductInputRequest, CssProductInput>
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcCssProductsServiceCallableFactory.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcCssProductsServiceCallableFactory.java
index 14d49a66feaa..08e69bc7de25 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcCssProductsServiceCallableFactory.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcCssProductsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCssProductsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcCssProductsServiceStub.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcCssProductsServiceStub.java
index af586ff89647..2a5fffd8c890 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcCssProductsServiceStub.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcCssProductsServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCssProductsServiceStub extends CssProductsServiceStub {
   private static final MethodDescriptor<GetCssProductRequest, CssProduct>
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcQuotaServiceCallableFactory.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcQuotaServiceCallableFactory.java
index daa4a1cab121..934bab89b3e0 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcQuotaServiceCallableFactory.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcQuotaServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcQuotaServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcQuotaServiceStub.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcQuotaServiceStub.java
index b7f1c23b1d95..2953803350f6 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcQuotaServiceStub.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/GrpcQuotaServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcQuotaServiceStub extends QuotaServiceStub {
   private static final MethodDescriptor<ListQuotaGroupsRequest, ListQuotaGroupsResponse>
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonAccountLabelsServiceCallableFactory.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonAccountLabelsServiceCallableFactory.java
index cb780c30db05..d640151d76a4 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonAccountLabelsServiceCallableFactory.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonAccountLabelsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountLabelsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonAccountLabelsServiceStub.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonAccountLabelsServiceStub.java
index 818e606c8153..ac81bd9f5639 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonAccountLabelsServiceStub.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonAccountLabelsServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountLabelsServiceStub extends AccountLabelsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonAccountsServiceCallableFactory.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonAccountsServiceCallableFactory.java
index 6b4b5e6cb00b..1673cbf2c505 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonAccountsServiceCallableFactory.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonAccountsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonAccountsServiceStub.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonAccountsServiceStub.java
index 9c00f43422e8..48fffae1d7ad 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonAccountsServiceStub.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonAccountsServiceStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountsServiceStub extends AccountsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonCssProductInputsServiceCallableFactory.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonCssProductInputsServiceCallableFactory.java
index 45db864b7daa..a8451e8e561b 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonCssProductInputsServiceCallableFactory.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonCssProductInputsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCssProductInputsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonCssProductInputsServiceStub.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonCssProductInputsServiceStub.java
index 0cfab6b87ccc..f6e6d7b4defc 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonCssProductInputsServiceStub.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonCssProductInputsServiceStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCssProductInputsServiceStub extends CssProductInputsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonCssProductsServiceCallableFactory.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonCssProductsServiceCallableFactory.java
index f3432ca36de8..ab7bd3e8a717 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonCssProductsServiceCallableFactory.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonCssProductsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCssProductsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonCssProductsServiceStub.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonCssProductsServiceStub.java
index 57e81e6c61b9..6e5ed2aaa32c 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonCssProductsServiceStub.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonCssProductsServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCssProductsServiceStub extends CssProductsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonQuotaServiceCallableFactory.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonQuotaServiceCallableFactory.java
index e643c840d2c6..0bc839520a64 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonQuotaServiceCallableFactory.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonQuotaServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonQuotaServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonQuotaServiceStub.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonQuotaServiceStub.java
index a6e6a704e9ac..d83f738cb7ae 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonQuotaServiceStub.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/HttpJsonQuotaServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonQuotaServiceStub extends QuotaServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/QuotaServiceStub.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/QuotaServiceStub.java
index 6479cef533ef..4932d86afd2b 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/QuotaServiceStub.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/QuotaServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.shopping.css.v1.ListQuotaGroupsRequest;
 import com.google.shopping.css.v1.ListQuotaGroupsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class QuotaServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/QuotaServiceStubSettings.java b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/QuotaServiceStubSettings.java
index fbdc437f383e..485fe5f9293d 100644
--- a/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/QuotaServiceStubSettings.java
+++ b/java-shopping-css/google-shopping-css/src/main/java/com/google/shopping/css/v1/stub/QuotaServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class QuotaServiceStubSettings extends StubSettings<QuotaServiceStubSettings> {
diff --git a/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/AccountLabelName.java b/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/AccountLabelName.java
index af4021c0fe62..d1d17465a815 100644
--- a/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/AccountLabelName.java
+++ b/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/AccountLabelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountLabelName implements ResourceName {
   private static final PathTemplate ACCOUNT_LABEL =
diff --git a/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/AccountName.java b/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/AccountName.java
index eadba6d4cac5..68066a1cc4a0 100644
--- a/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/AccountName.java
+++ b/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/CssProductInputName.java b/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/CssProductInputName.java
index cd57db2e0c41..0440ccb6114c 100644
--- a/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/CssProductInputName.java
+++ b/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/CssProductInputName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CssProductInputName implements ResourceName {
   private static final PathTemplate ACCOUNT_CSS_PRODUCT_INPUT =
diff --git a/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/CssProductName.java b/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/CssProductName.java
index 5465579cc94a..3da7371a2fe2 100644
--- a/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/CssProductName.java
+++ b/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/CssProductName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CssProductName implements ResourceName {
   private static final PathTemplate ACCOUNT_CSS_PRODUCT =
diff --git a/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/QuotaGroupName.java b/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/QuotaGroupName.java
index 920edd4f3b47..cc669fd29e50 100644
--- a/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/QuotaGroupName.java
+++ b/java-shopping-css/proto-google-shopping-css-v1/src/main/java/com/google/shopping/css/v1/QuotaGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QuotaGroupName implements ResourceName {
   private static final PathTemplate ACCOUNT_QUOTA_GROUP =
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountIssueServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountIssueServiceClient.java
index e659f0133efe..1b55d469c6eb 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountIssueServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountIssueServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountIssueServiceClient implements BackgroundResource {
   private final AccountIssueServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountIssueServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountIssueServiceSettings.java
index 588d463f7d97..ba7fe7331859 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountIssueServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountIssueServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountIssueServiceSettings extends ClientSettings<AccountIssueServiceSettings> {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountRelationshipsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountRelationshipsServiceClient.java
index 603d9c06817f..2aa15d8a16fd 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountRelationshipsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountRelationshipsServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -179,6 +180,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountRelationshipsServiceClient implements BackgroundResource {
   private final AccountRelationshipsServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountRelationshipsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountRelationshipsServiceSettings.java
index 870b20db30d9..c10bb24328b2 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountRelationshipsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountRelationshipsServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountRelationshipsServiceSettings
     extends ClientSettings<AccountRelationshipsServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountServicesServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountServicesServiceClient.java
index 1558affe1085..3be291a276d0 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountServicesServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountServicesServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -218,6 +219,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountServicesServiceClient implements BackgroundResource {
   private final AccountServicesServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountServicesServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountServicesServiceSettings.java
index cf5881457d80..93770db57ee3 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountServicesServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountServicesServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountServicesServiceSettings extends ClientSettings<AccountServicesServiceSettings> {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountsServiceClient.java
index b6de3ade0367..ed03cf334ca0 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountsServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -248,6 +249,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountsServiceClient implements BackgroundResource {
   private final AccountsServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountsServiceSettings.java
index 273e728006cd..f91a9cf9c06c 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AccountsServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountsServiceSettings extends ClientSettings<AccountsServiceSettings> {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AutofeedSettingsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AutofeedSettingsServiceClient.java
index 5e9a6ebfed33..0b76ccb6417e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AutofeedSettingsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AutofeedSettingsServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutofeedSettingsServiceClient implements BackgroundResource {
   private final AutofeedSettingsServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AutofeedSettingsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AutofeedSettingsServiceSettings.java
index 9ef6ae3fa5bc..e256ea23a400 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AutofeedSettingsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AutofeedSettingsServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutofeedSettingsServiceSettings
     extends ClientSettings<AutofeedSettingsServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AutomaticImprovementsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AutomaticImprovementsServiceClient.java
index 51c3a5d26087..0b32359dd189 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AutomaticImprovementsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AutomaticImprovementsServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutomaticImprovementsServiceClient implements BackgroundResource {
   private final AutomaticImprovementsServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AutomaticImprovementsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AutomaticImprovementsServiceSettings.java
index 138a2140fce0..4fd2bcb0b052 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AutomaticImprovementsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/AutomaticImprovementsServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutomaticImprovementsServiceSettings
     extends ClientSettings<AutomaticImprovementsServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessIdentityServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessIdentityServiceClient.java
index f41a665c9bc6..da97221f3de0 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessIdentityServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessIdentityServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BusinessIdentityServiceClient implements BackgroundResource {
   private final BusinessIdentityServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessIdentityServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessIdentityServiceSettings.java
index fa473dcd4b09..bd9c8e8a425b 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessIdentityServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessIdentityServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BusinessIdentityServiceSettings
     extends ClientSettings<BusinessIdentityServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessInfoServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessInfoServiceClient.java
index 1905194cd0bd..b8e56084a12e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessInfoServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessInfoServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BusinessInfoServiceClient implements BackgroundResource {
   private final BusinessInfoServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessInfoServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessInfoServiceSettings.java
index 53144ab8cc18..e7eb274688b0 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessInfoServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessInfoServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BusinessInfoServiceSettings extends ClientSettings<BusinessInfoServiceSettings> {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/CheckoutSettingsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/CheckoutSettingsServiceClient.java
index 1df651161d2e..7aec0f4149ae 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/CheckoutSettingsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/CheckoutSettingsServiceClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -191,6 +192,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CheckoutSettingsServiceClient implements BackgroundResource {
   private final CheckoutSettingsServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/CheckoutSettingsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/CheckoutSettingsServiceSettings.java
index 6008f3a48e41..4f04df5d97a5 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/CheckoutSettingsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/CheckoutSettingsServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CheckoutSettingsServiceSettings
     extends ClientSettings<CheckoutSettingsServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/DeveloperRegistrationServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/DeveloperRegistrationServiceClient.java
index c2b2d1173030..234b750e4d6a 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/DeveloperRegistrationServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/DeveloperRegistrationServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -179,6 +180,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeveloperRegistrationServiceClient implements BackgroundResource {
   private final DeveloperRegistrationServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/DeveloperRegistrationServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/DeveloperRegistrationServiceSettings.java
index 29be45cd781d..8e4d2a79e50e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/DeveloperRegistrationServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/DeveloperRegistrationServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeveloperRegistrationServiceSettings
     extends ClientSettings<DeveloperRegistrationServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/EmailPreferencesServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/EmailPreferencesServiceClient.java
index e59b88bf7c22..3bcd9bf0c8ef 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/EmailPreferencesServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/EmailPreferencesServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EmailPreferencesServiceClient implements BackgroundResource {
   private final EmailPreferencesServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/EmailPreferencesServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/EmailPreferencesServiceSettings.java
index 6bff0d98720b..c2162370dfcb 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/EmailPreferencesServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/EmailPreferencesServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EmailPreferencesServiceSettings
     extends ClientSettings<EmailPreferencesServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/GbpAccountsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/GbpAccountsServiceClient.java
index 5c5b89250057..f0836b5c6f36 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/GbpAccountsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/GbpAccountsServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -162,6 +163,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GbpAccountsServiceClient implements BackgroundResource {
   private final GbpAccountsServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/GbpAccountsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/GbpAccountsServiceSettings.java
index 4cf116857957..8ca233f5109f 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/GbpAccountsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/GbpAccountsServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GbpAccountsServiceSettings extends ClientSettings<GbpAccountsServiceSettings> {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/HomepageServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/HomepageServiceClient.java
index dee4a4539143..372db4f0c190 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/HomepageServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/HomepageServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -185,6 +186,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HomepageServiceClient implements BackgroundResource {
   private final HomepageServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/HomepageServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/HomepageServiceSettings.java
index 9b9d4b90e956..b72ae6f16d4b 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/HomepageServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/HomepageServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HomepageServiceSettings extends ClientSettings<HomepageServiceSettings> {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/LfpProvidersServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/LfpProvidersServiceClient.java
index 5d2955defe0d..8c9bb90a7506 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/LfpProvidersServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/LfpProvidersServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -162,6 +163,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LfpProvidersServiceClient implements BackgroundResource {
   private final LfpProvidersServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/LfpProvidersServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/LfpProvidersServiceSettings.java
index 3746d582ab05..7410540a9962 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/LfpProvidersServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/LfpProvidersServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LfpProvidersServiceSettings extends ClientSettings<LfpProvidersServiceSettings> {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/OmnichannelSettingsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/OmnichannelSettingsServiceClient.java
index 50502dcef2ec..5f8f1fb78b7f 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/OmnichannelSettingsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/OmnichannelSettingsServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -214,6 +215,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OmnichannelSettingsServiceClient implements BackgroundResource {
   private final OmnichannelSettingsServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/OmnichannelSettingsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/OmnichannelSettingsServiceSettings.java
index 0548cfa069bf..0c7b213240e7 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/OmnichannelSettingsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/OmnichannelSettingsServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OmnichannelSettingsServiceSettings
     extends ClientSettings<OmnichannelSettingsServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/OnlineReturnPolicyServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/OnlineReturnPolicyServiceClient.java
index 8eccc44adf21..07aa1b7bd3d9 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/OnlineReturnPolicyServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/OnlineReturnPolicyServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -203,6 +204,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OnlineReturnPolicyServiceClient implements BackgroundResource {
   private final OnlineReturnPolicyServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/OnlineReturnPolicyServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/OnlineReturnPolicyServiceSettings.java
index 0196cc349eb8..e2726c06bb75 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/OnlineReturnPolicyServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/OnlineReturnPolicyServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OnlineReturnPolicyServiceSettings
     extends ClientSettings<OnlineReturnPolicyServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/ProgramsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/ProgramsServiceClient.java
index 045a8735b811..4d51fb7318ae 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/ProgramsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/ProgramsServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -204,6 +205,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProgramsServiceClient implements BackgroundResource {
   private final ProgramsServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/ProgramsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/ProgramsServiceSettings.java
index 32eb5e21829d..ea461949df95 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/ProgramsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/ProgramsServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProgramsServiceSettings extends ClientSettings<ProgramsServiceSettings> {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/RegionsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/RegionsServiceClient.java
index 1173a6648b9c..0fe6fb5811d6 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/RegionsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/RegionsServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -259,6 +260,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionsServiceClient implements BackgroundResource {
   private final RegionsServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/RegionsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/RegionsServiceSettings.java
index abf32d5baa60..a46030565943 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/RegionsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/RegionsServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionsServiceSettings extends ClientSettings<RegionsServiceSettings> {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/ShippingSettingsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/ShippingSettingsServiceClient.java
index a05b3ffd111c..f39fae05c2bf 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/ShippingSettingsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/ShippingSettingsServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ShippingSettingsServiceClient implements BackgroundResource {
   private final ShippingSettingsServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/ShippingSettingsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/ShippingSettingsServiceSettings.java
index 817260fb7336..2065e84b5dd0 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/ShippingSettingsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/ShippingSettingsServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ShippingSettingsServiceSettings
     extends ClientSettings<ShippingSettingsServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceAgreementStateServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceAgreementStateServiceClient.java
index d63fb0bbbe52..f6a1aebab5ce 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceAgreementStateServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceAgreementStateServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -157,6 +158,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TermsOfServiceAgreementStateServiceClient implements BackgroundResource {
   private final TermsOfServiceAgreementStateServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceAgreementStateServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceAgreementStateServiceSettings.java
index 2e2585423b16..fb90a6195105 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceAgreementStateServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceAgreementStateServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TermsOfServiceAgreementStateServiceSettings
     extends ClientSettings<TermsOfServiceAgreementStateServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceServiceClient.java
index 0c4bf7fbce7c..64e5c5370148 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -165,6 +166,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TermsOfServiceServiceClient implements BackgroundResource {
   private final TermsOfServiceServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceServiceSettings.java
index 7303c2fa62c7..9a375c51c89a 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TermsOfServiceServiceSettings extends ClientSettings<TermsOfServiceServiceSettings> {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/UserServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/UserServiceClient.java
index ca2b8030cda6..1fae10ba4038 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/UserServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/UserServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -231,6 +232,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserServiceClient implements BackgroundResource {
   private final UserServiceSettings settings;
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/UserServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/UserServiceSettings.java
index d378dfdccf7e..8ddc123d2514 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/UserServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/UserServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserServiceSettings extends ClientSettings<UserServiceSettings> {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountIssueServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountIssueServiceStub.java
index 437128620fb8..0a2758e3dc9e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountIssueServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountIssueServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.shopping.merchant.accounts.v1.ListAccountIssuesRequest;
 import com.google.shopping.merchant.accounts.v1.ListAccountIssuesResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AccountIssueServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountIssueServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountIssueServiceStubSettings.java
index da871b4a0cc9..af859c746c47 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountIssueServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountIssueServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AccountIssueServiceStubSettings extends StubSettings<AccountIssueServiceStubSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountRelationshipsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountRelationshipsServiceStub.java
index 9415e58c9685..2acf20f0b7cb 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountRelationshipsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountRelationshipsServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.shopping.merchant.accounts.v1.ListAccountRelationshipsResponse;
 import com.google.shopping.merchant.accounts.v1.UpdateAccountRelationshipRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AccountRelationshipsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountRelationshipsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountRelationshipsServiceStubSettings.java
index dd84b29e4e26..9b0d9df5cd77 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountRelationshipsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountRelationshipsServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AccountRelationshipsServiceStubSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountServicesServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountServicesServiceStub.java
index 61d956bc7e16..c8e5a30f3cdb 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountServicesServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountServicesServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.shopping.merchant.accounts.v1.ProposeAccountServiceRequest;
 import com.google.shopping.merchant.accounts.v1.RejectAccountServiceRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AccountServicesServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountServicesServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountServicesServiceStubSettings.java
index 87dcbe91c44e..189d7695e268 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountServicesServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountServicesServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AccountServicesServiceStubSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountsServiceStub.java
index 5052ce59d606..d8d3f01f6506 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountsServiceStub.java
@@ -33,6 +33,7 @@
 import com.google.shopping.merchant.accounts.v1.ListSubAccountsResponse;
 import com.google.shopping.merchant.accounts.v1.UpdateAccountRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AccountsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountsServiceStubSettings.java
index 6bd5f3416509..c9d89e5fe8bd 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AccountsServiceStubSettings.java
@@ -65,6 +65,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AccountsServiceStubSettings extends StubSettings<AccountsServiceStubSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AutofeedSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AutofeedSettingsServiceStub.java
index bf9398e09e8f..a4bfd550c2c5 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AutofeedSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AutofeedSettingsServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.shopping.merchant.accounts.v1.GetAutofeedSettingsRequest;
 import com.google.shopping.merchant.accounts.v1.UpdateAutofeedSettingsRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AutofeedSettingsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AutofeedSettingsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AutofeedSettingsServiceStubSettings.java
index 0f95f498ea53..fa4f0e4b58de 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AutofeedSettingsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AutofeedSettingsServiceStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AutofeedSettingsServiceStubSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AutomaticImprovementsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AutomaticImprovementsServiceStub.java
index eeffb6b04e59..161dfad5dc9b 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AutomaticImprovementsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AutomaticImprovementsServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.shopping.merchant.accounts.v1.GetAutomaticImprovementsRequest;
 import com.google.shopping.merchant.accounts.v1.UpdateAutomaticImprovementsRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AutomaticImprovementsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AutomaticImprovementsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AutomaticImprovementsServiceStubSettings.java
index 0e2600996938..71e797c6c56f 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AutomaticImprovementsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/AutomaticImprovementsServiceStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AutomaticImprovementsServiceStubSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/BusinessIdentityServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/BusinessIdentityServiceStub.java
index cadb4b258c59..268a0d5cd431 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/BusinessIdentityServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/BusinessIdentityServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.shopping.merchant.accounts.v1.GetBusinessIdentityRequest;
 import com.google.shopping.merchant.accounts.v1.UpdateBusinessIdentityRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BusinessIdentityServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/BusinessIdentityServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/BusinessIdentityServiceStubSettings.java
index 6c33c1d434a0..6dfdaad1cc9b 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/BusinessIdentityServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/BusinessIdentityServiceStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BusinessIdentityServiceStubSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/BusinessInfoServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/BusinessInfoServiceStub.java
index 70c08ba3f537..656830ad98b0 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/BusinessInfoServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/BusinessInfoServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.shopping.merchant.accounts.v1.GetBusinessInfoRequest;
 import com.google.shopping.merchant.accounts.v1.UpdateBusinessInfoRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class BusinessInfoServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/BusinessInfoServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/BusinessInfoServiceStubSettings.java
index e84d16b27dd9..ea8771b69bb9 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/BusinessInfoServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/BusinessInfoServiceStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class BusinessInfoServiceStubSettings extends StubSettings<BusinessInfoServiceStubSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/CheckoutSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/CheckoutSettingsServiceStub.java
index e63d74532b3a..bfe8270d275f 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/CheckoutSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/CheckoutSettingsServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.shopping.merchant.accounts.v1.GetCheckoutSettingsRequest;
 import com.google.shopping.merchant.accounts.v1.UpdateCheckoutSettingsRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CheckoutSettingsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/CheckoutSettingsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/CheckoutSettingsServiceStubSettings.java
index e8bcd04ca76c..d5afdabf64ad 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/CheckoutSettingsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/CheckoutSettingsServiceStubSettings.java
@@ -50,6 +50,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CheckoutSettingsServiceStubSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/DeveloperRegistrationServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/DeveloperRegistrationServiceStub.java
index e90a409b17b8..00d25470dba5 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/DeveloperRegistrationServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/DeveloperRegistrationServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.shopping.merchant.accounts.v1.RegisterGcpRequest;
 import com.google.shopping.merchant.accounts.v1.UnregisterGcpRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DeveloperRegistrationServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/DeveloperRegistrationServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/DeveloperRegistrationServiceStubSettings.java
index 4f4dadce5ee6..4a347f7fd0db 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/DeveloperRegistrationServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/DeveloperRegistrationServiceStubSettings.java
@@ -50,6 +50,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DeveloperRegistrationServiceStubSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/EmailPreferencesServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/EmailPreferencesServiceStub.java
index 741119006c41..5203915ce336 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/EmailPreferencesServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/EmailPreferencesServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.shopping.merchant.accounts.v1.GetEmailPreferencesRequest;
 import com.google.shopping.merchant.accounts.v1.UpdateEmailPreferencesRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EmailPreferencesServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/EmailPreferencesServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/EmailPreferencesServiceStubSettings.java
index 1378cd6907a9..a7b782aed062 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/EmailPreferencesServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/EmailPreferencesServiceStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EmailPreferencesServiceStubSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GbpAccountsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GbpAccountsServiceStub.java
index f1fe6cbdcc40..814179674f23 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GbpAccountsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GbpAccountsServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.shopping.merchant.accounts.v1.ListGbpAccountsRequest;
 import com.google.shopping.merchant.accounts.v1.ListGbpAccountsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class GbpAccountsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GbpAccountsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GbpAccountsServiceStubSettings.java
index 678adfc866d8..875508cc07c2 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GbpAccountsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GbpAccountsServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class GbpAccountsServiceStubSettings extends StubSettings<GbpAccountsServiceStubSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountIssueServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountIssueServiceCallableFactory.java
index 33cebb9ce846..8204afa6d7bb 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountIssueServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountIssueServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAccountIssueServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountIssueServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountIssueServiceStub.java
index 5b779602f1c4..f0573b65a646 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountIssueServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountIssueServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAccountIssueServiceStub extends AccountIssueServiceStub {
   private static final MethodDescriptor<ListAccountIssuesRequest, ListAccountIssuesResponse>
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountRelationshipsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountRelationshipsServiceCallableFactory.java
index 597086a63151..476fbebe8dd6 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountRelationshipsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountRelationshipsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAccountRelationshipsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountRelationshipsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountRelationshipsServiceStub.java
index 3d69b642631c..1750a98b50c1 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountRelationshipsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountRelationshipsServiceStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAccountRelationshipsServiceStub extends AccountRelationshipsServiceStub {
   private static final MethodDescriptor<GetAccountRelationshipRequest, AccountRelationship>
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountServicesServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountServicesServiceCallableFactory.java
index 4008af7891c8..94dc0be5826a 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountServicesServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountServicesServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAccountServicesServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountServicesServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountServicesServiceStub.java
index a07028a31bbd..daef0a394ca4 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountServicesServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountServicesServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAccountServicesServiceStub extends AccountServicesServiceStub {
   private static final MethodDescriptor<GetAccountServiceRequest, AccountService>
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountsServiceCallableFactory.java
index 6d65bee0e80e..651ae2d1d05e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAccountsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountsServiceStub.java
index 0b14d656a6f0..2eaec11d6ce3 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAccountsServiceStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAccountsServiceStub extends AccountsServiceStub {
   private static final MethodDescriptor<GetAccountRequest, Account> getAccountMethodDescriptor =
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAutofeedSettingsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAutofeedSettingsServiceCallableFactory.java
index 295911d398fa..2c5e89c05ea5 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAutofeedSettingsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAutofeedSettingsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAutofeedSettingsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAutofeedSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAutofeedSettingsServiceStub.java
index 9c2e8153ee87..1c6bac58083e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAutofeedSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAutofeedSettingsServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAutofeedSettingsServiceStub extends AutofeedSettingsServiceStub {
   private static final MethodDescriptor<GetAutofeedSettingsRequest, AutofeedSettings>
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAutomaticImprovementsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAutomaticImprovementsServiceCallableFactory.java
index a5c8fbd6f8dc..b94873a22b2d 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAutomaticImprovementsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAutomaticImprovementsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAutomaticImprovementsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAutomaticImprovementsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAutomaticImprovementsServiceStub.java
index e480a1f26b79..010ff854f122 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAutomaticImprovementsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcAutomaticImprovementsServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAutomaticImprovementsServiceStub extends AutomaticImprovementsServiceStub {
   private static final MethodDescriptor<GetAutomaticImprovementsRequest, AutomaticImprovements>
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcBusinessIdentityServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcBusinessIdentityServiceCallableFactory.java
index 633b3ad98af7..b39244f3637e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcBusinessIdentityServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcBusinessIdentityServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBusinessIdentityServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcBusinessIdentityServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcBusinessIdentityServiceStub.java
index 2bfbe6e1819e..c9ba6b9d6ee5 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcBusinessIdentityServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcBusinessIdentityServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBusinessIdentityServiceStub extends BusinessIdentityServiceStub {
   private static final MethodDescriptor<GetBusinessIdentityRequest, BusinessIdentity>
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcBusinessInfoServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcBusinessInfoServiceCallableFactory.java
index 35a66fc7965a..d8e5912fae1d 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcBusinessInfoServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcBusinessInfoServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBusinessInfoServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcBusinessInfoServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcBusinessInfoServiceStub.java
index 7d52f8a7b0d5..c373c31196b9 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcBusinessInfoServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcBusinessInfoServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcBusinessInfoServiceStub extends BusinessInfoServiceStub {
   private static final MethodDescriptor<GetBusinessInfoRequest, BusinessInfo>
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcCheckoutSettingsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcCheckoutSettingsServiceCallableFactory.java
index ada5408a50cc..0adc50c6a8e5 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcCheckoutSettingsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcCheckoutSettingsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCheckoutSettingsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcCheckoutSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcCheckoutSettingsServiceStub.java
index f5d9a4b8e9a6..59bb421ecc93 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcCheckoutSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcCheckoutSettingsServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCheckoutSettingsServiceStub extends CheckoutSettingsServiceStub {
   private static final MethodDescriptor<GetCheckoutSettingsRequest, CheckoutSettings>
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcDeveloperRegistrationServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcDeveloperRegistrationServiceCallableFactory.java
index 3d3a70513516..29b6a63fb69c 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcDeveloperRegistrationServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcDeveloperRegistrationServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDeveloperRegistrationServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcDeveloperRegistrationServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcDeveloperRegistrationServiceStub.java
index 8f17671cf6c8..fa1611bb9fd5 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcDeveloperRegistrationServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcDeveloperRegistrationServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDeveloperRegistrationServiceStub extends DeveloperRegistrationServiceStub {
   private static final MethodDescriptor<RegisterGcpRequest, DeveloperRegistration>
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcEmailPreferencesServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcEmailPreferencesServiceCallableFactory.java
index 0cac2c4d86af..62f6b65ac197 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcEmailPreferencesServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcEmailPreferencesServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEmailPreferencesServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcEmailPreferencesServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcEmailPreferencesServiceStub.java
index 1aa5b7eaa282..e7887a7e9062 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcEmailPreferencesServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcEmailPreferencesServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEmailPreferencesServiceStub extends EmailPreferencesServiceStub {
   private static final MethodDescriptor<GetEmailPreferencesRequest, EmailPreferences>
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcGbpAccountsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcGbpAccountsServiceCallableFactory.java
index 6a7e728a4822..3eeba2d2ddf3 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcGbpAccountsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcGbpAccountsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGbpAccountsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcGbpAccountsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcGbpAccountsServiceStub.java
index be6909991319..4cf3d2760527 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcGbpAccountsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcGbpAccountsServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcGbpAccountsServiceStub extends GbpAccountsServiceStub {
   private static final MethodDescriptor<ListGbpAccountsRequest, ListGbpAccountsResponse>
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcHomepageServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcHomepageServiceCallableFactory.java
index cfbdcb84a4c2..f7f9badbffb6 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcHomepageServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcHomepageServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcHomepageServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcHomepageServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcHomepageServiceStub.java
index 56e47d12f6f5..ad8186ca5ba2 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcHomepageServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcHomepageServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcHomepageServiceStub extends HomepageServiceStub {
   private static final MethodDescriptor<GetHomepageRequest, Homepage> getHomepageMethodDescriptor =
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcLfpProvidersServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcLfpProvidersServiceCallableFactory.java
index bcdaa600247b..6737124d569e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcLfpProvidersServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcLfpProvidersServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLfpProvidersServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcLfpProvidersServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcLfpProvidersServiceStub.java
index 859da95fd37c..13f6c0815be0 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcLfpProvidersServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcLfpProvidersServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLfpProvidersServiceStub extends LfpProvidersServiceStub {
   private static final MethodDescriptor<FindLfpProvidersRequest, FindLfpProvidersResponse>
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcOmnichannelSettingsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcOmnichannelSettingsServiceCallableFactory.java
index 2032aed38948..3838b2f49312 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcOmnichannelSettingsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcOmnichannelSettingsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOmnichannelSettingsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcOmnichannelSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcOmnichannelSettingsServiceStub.java
index e945fb98b880..0a1764f61279 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcOmnichannelSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcOmnichannelSettingsServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOmnichannelSettingsServiceStub extends OmnichannelSettingsServiceStub {
   private static final MethodDescriptor<GetOmnichannelSettingRequest, OmnichannelSetting>
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcOnlineReturnPolicyServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcOnlineReturnPolicyServiceCallableFactory.java
index 7435118d23f9..2264f0992122 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcOnlineReturnPolicyServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcOnlineReturnPolicyServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOnlineReturnPolicyServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcOnlineReturnPolicyServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcOnlineReturnPolicyServiceStub.java
index 5ff8a73feadb..bbfbec92fdc5 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcOnlineReturnPolicyServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcOnlineReturnPolicyServiceStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcOnlineReturnPolicyServiceStub extends OnlineReturnPolicyServiceStub {
   private static final MethodDescriptor<GetOnlineReturnPolicyRequest, OnlineReturnPolicy>
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcProgramsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcProgramsServiceCallableFactory.java
index 13a8ab02d00e..e1f082db5137 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcProgramsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcProgramsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcProgramsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcProgramsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcProgramsServiceStub.java
index f1ac4b9d8f81..f6cf87df1d34 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcProgramsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcProgramsServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcProgramsServiceStub extends ProgramsServiceStub {
   private static final MethodDescriptor<GetProgramRequest, Program> getProgramMethodDescriptor =
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcRegionsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcRegionsServiceCallableFactory.java
index 1badf49e67c4..e16ced824ce7 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcRegionsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcRegionsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRegionsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcRegionsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcRegionsServiceStub.java
index 664135743be7..6b3aecb0650d 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcRegionsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcRegionsServiceStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRegionsServiceStub extends RegionsServiceStub {
   private static final MethodDescriptor<GetRegionRequest, Region> getRegionMethodDescriptor =
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcShippingSettingsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcShippingSettingsServiceCallableFactory.java
index 8748c2aaeaea..ad44c1bb59e2 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcShippingSettingsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcShippingSettingsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcShippingSettingsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcShippingSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcShippingSettingsServiceStub.java
index ec65cda8e54f..e7bbce744992 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcShippingSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcShippingSettingsServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcShippingSettingsServiceStub extends ShippingSettingsServiceStub {
   private static final MethodDescriptor<GetShippingSettingsRequest, ShippingSettings>
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcTermsOfServiceAgreementStateServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcTermsOfServiceAgreementStateServiceCallableFactory.java
index debda3a655e7..0daf216bc751 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcTermsOfServiceAgreementStateServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcTermsOfServiceAgreementStateServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTermsOfServiceAgreementStateServiceCallableFactory
     implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcTermsOfServiceAgreementStateServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcTermsOfServiceAgreementStateServiceStub.java
index ace1563b99a1..fab8bc52cd8d 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcTermsOfServiceAgreementStateServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcTermsOfServiceAgreementStateServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTermsOfServiceAgreementStateServiceStub
     extends TermsOfServiceAgreementStateServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcTermsOfServiceServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcTermsOfServiceServiceCallableFactory.java
index dd9ead315cd9..55036f7a5c73 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcTermsOfServiceServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcTermsOfServiceServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTermsOfServiceServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcTermsOfServiceServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcTermsOfServiceServiceStub.java
index 3b9f43603d99..1928f4205466 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcTermsOfServiceServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcTermsOfServiceServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTermsOfServiceServiceStub extends TermsOfServiceServiceStub {
   private static final MethodDescriptor<GetTermsOfServiceRequest, TermsOfService>
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcUserServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcUserServiceCallableFactory.java
index c2b0c0fd292d..1257f12b55a2 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcUserServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcUserServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcUserServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcUserServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcUserServiceStub.java
index 0d8b47fef425..9cd97f191056 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcUserServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/GrpcUserServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcUserServiceStub extends UserServiceStub {
   private static final MethodDescriptor<GetUserRequest, User> getUserMethodDescriptor =
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HomepageServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HomepageServiceStub.java
index 1c1a79e8bab2..9e7f51e9cf10 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HomepageServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HomepageServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.shopping.merchant.accounts.v1.UnclaimHomepageRequest;
 import com.google.shopping.merchant.accounts.v1.UpdateHomepageRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class HomepageServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HomepageServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HomepageServiceStubSettings.java
index 09d4074d36ac..fc5e9936dbe5 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HomepageServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HomepageServiceStubSettings.java
@@ -49,6 +49,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class HomepageServiceStubSettings extends StubSettings<HomepageServiceStubSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountIssueServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountIssueServiceCallableFactory.java
index 97b2304ce610..9d438214a160 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountIssueServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountIssueServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountIssueServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountIssueServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountIssueServiceStub.java
index 49a29015f624..d129aed334ea 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountIssueServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountIssueServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountIssueServiceStub extends AccountIssueServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountRelationshipsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountRelationshipsServiceCallableFactory.java
index ae978451499d..145c031aeece 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountRelationshipsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountRelationshipsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountRelationshipsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountRelationshipsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountRelationshipsServiceStub.java
index 1e7d3f5e3c32..677dc117dfb7 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountRelationshipsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountRelationshipsServiceStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountRelationshipsServiceStub extends AccountRelationshipsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountServicesServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountServicesServiceCallableFactory.java
index d67248e69678..a3cf26c4ce38 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountServicesServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountServicesServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountServicesServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountServicesServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountServicesServiceStub.java
index 02efcf439026..efce4985aeca 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountServicesServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountServicesServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountServicesServiceStub extends AccountServicesServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountsServiceCallableFactory.java
index 98953053e6f6..946b7bae112d 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountsServiceStub.java
index 001ed374125a..d1e1469aba6e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAccountsServiceStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountsServiceStub extends AccountsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAutofeedSettingsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAutofeedSettingsServiceCallableFactory.java
index 40849e03485b..4cce7f1f5dea 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAutofeedSettingsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAutofeedSettingsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAutofeedSettingsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAutofeedSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAutofeedSettingsServiceStub.java
index d66898a2a0b3..820c619eee37 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAutofeedSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAutofeedSettingsServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAutofeedSettingsServiceStub extends AutofeedSettingsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAutomaticImprovementsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAutomaticImprovementsServiceCallableFactory.java
index d1b4fdf44738..c5f460ee62d0 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAutomaticImprovementsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAutomaticImprovementsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAutomaticImprovementsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAutomaticImprovementsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAutomaticImprovementsServiceStub.java
index 76ea992b1a34..83dfd956bd9a 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAutomaticImprovementsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonAutomaticImprovementsServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAutomaticImprovementsServiceStub extends AutomaticImprovementsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonBusinessIdentityServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonBusinessIdentityServiceCallableFactory.java
index b74c7cc907d7..0197e465394e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonBusinessIdentityServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonBusinessIdentityServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBusinessIdentityServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonBusinessIdentityServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonBusinessIdentityServiceStub.java
index eaa164c1ae38..e367dd740496 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonBusinessIdentityServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonBusinessIdentityServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBusinessIdentityServiceStub extends BusinessIdentityServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonBusinessInfoServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonBusinessInfoServiceCallableFactory.java
index 230ab8684312..f4d1a240e1f7 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonBusinessInfoServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonBusinessInfoServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBusinessInfoServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonBusinessInfoServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonBusinessInfoServiceStub.java
index cdb3f9d7132d..0c0010515cb7 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonBusinessInfoServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonBusinessInfoServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonBusinessInfoServiceStub extends BusinessInfoServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonCheckoutSettingsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonCheckoutSettingsServiceCallableFactory.java
index 1a4515ae359d..d5faf3aa8af0 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonCheckoutSettingsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonCheckoutSettingsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCheckoutSettingsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonCheckoutSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonCheckoutSettingsServiceStub.java
index 41ae72c19034..69e4afe3c0cd 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonCheckoutSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonCheckoutSettingsServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCheckoutSettingsServiceStub extends CheckoutSettingsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonDeveloperRegistrationServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonDeveloperRegistrationServiceCallableFactory.java
index fc8317dfc989..fad322522c5e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonDeveloperRegistrationServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonDeveloperRegistrationServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeveloperRegistrationServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonDeveloperRegistrationServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonDeveloperRegistrationServiceStub.java
index c5848dc6281a..db47c55fe6f6 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonDeveloperRegistrationServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonDeveloperRegistrationServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDeveloperRegistrationServiceStub extends DeveloperRegistrationServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonEmailPreferencesServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonEmailPreferencesServiceCallableFactory.java
index ecbd91771500..0f0ad68e1f34 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonEmailPreferencesServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonEmailPreferencesServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEmailPreferencesServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonEmailPreferencesServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonEmailPreferencesServiceStub.java
index d9518e2034ac..5598fedde742 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonEmailPreferencesServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonEmailPreferencesServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEmailPreferencesServiceStub extends EmailPreferencesServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonGbpAccountsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonGbpAccountsServiceCallableFactory.java
index 56fd0ad09cd6..f3865934f37c 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonGbpAccountsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonGbpAccountsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGbpAccountsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonGbpAccountsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonGbpAccountsServiceStub.java
index d311427ccc1f..09cd00b6466b 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonGbpAccountsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonGbpAccountsServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonGbpAccountsServiceStub extends GbpAccountsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonHomepageServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonHomepageServiceCallableFactory.java
index 31cf86dca0b4..fd9be4f89fd6 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonHomepageServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonHomepageServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonHomepageServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonHomepageServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonHomepageServiceStub.java
index 96644c370a01..3c3318e7a081 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonHomepageServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonHomepageServiceStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonHomepageServiceStub extends HomepageServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonLfpProvidersServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonLfpProvidersServiceCallableFactory.java
index a4119ef2e530..7cc4c8875e04 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonLfpProvidersServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonLfpProvidersServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpProvidersServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonLfpProvidersServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonLfpProvidersServiceStub.java
index c12bffe2f447..641b16cff992 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonLfpProvidersServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonLfpProvidersServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpProvidersServiceStub extends LfpProvidersServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonOmnichannelSettingsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonOmnichannelSettingsServiceCallableFactory.java
index 9c03f504d759..18f26b7b3877 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonOmnichannelSettingsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonOmnichannelSettingsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOmnichannelSettingsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonOmnichannelSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonOmnichannelSettingsServiceStub.java
index a9420d4f6420..7f5013379bb8 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonOmnichannelSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonOmnichannelSettingsServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOmnichannelSettingsServiceStub extends OmnichannelSettingsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonOnlineReturnPolicyServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonOnlineReturnPolicyServiceCallableFactory.java
index 676c7fef91ab..f70c3e6ec5e6 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonOnlineReturnPolicyServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonOnlineReturnPolicyServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOnlineReturnPolicyServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonOnlineReturnPolicyServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonOnlineReturnPolicyServiceStub.java
index 761a023dec13..fd12d1bc3daa 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonOnlineReturnPolicyServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonOnlineReturnPolicyServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonOnlineReturnPolicyServiceStub extends OnlineReturnPolicyServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonProgramsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonProgramsServiceCallableFactory.java
index fc4b991e4c4a..2800d99abb0c 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonProgramsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonProgramsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProgramsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonProgramsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonProgramsServiceStub.java
index a09f6b3cebd9..4d436d67d1ff 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonProgramsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonProgramsServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProgramsServiceStub extends ProgramsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonRegionsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonRegionsServiceCallableFactory.java
index e9ac1b71194e..1da214e6005b 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonRegionsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonRegionsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonRegionsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonRegionsServiceStub.java
index 3c20f687122f..b176da741a32 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonRegionsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonRegionsServiceStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionsServiceStub extends RegionsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonShippingSettingsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonShippingSettingsServiceCallableFactory.java
index 52bca41e13ab..606eb49882f4 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonShippingSettingsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonShippingSettingsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonShippingSettingsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonShippingSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonShippingSettingsServiceStub.java
index 7bb98d25f6be..802da8667938 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonShippingSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonShippingSettingsServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonShippingSettingsServiceStub extends ShippingSettingsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonTermsOfServiceAgreementStateServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonTermsOfServiceAgreementStateServiceCallableFactory.java
index 555f7f9a3541..154ad91446f0 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonTermsOfServiceAgreementStateServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonTermsOfServiceAgreementStateServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTermsOfServiceAgreementStateServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonTermsOfServiceAgreementStateServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonTermsOfServiceAgreementStateServiceStub.java
index 8fc7b49a08ee..de275e5a31c2 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonTermsOfServiceAgreementStateServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonTermsOfServiceAgreementStateServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTermsOfServiceAgreementStateServiceStub
     extends TermsOfServiceAgreementStateServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonTermsOfServiceServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonTermsOfServiceServiceCallableFactory.java
index 6997db1ce973..05a3410ffdc5 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonTermsOfServiceServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonTermsOfServiceServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTermsOfServiceServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonTermsOfServiceServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonTermsOfServiceServiceStub.java
index b72cb03fcfa4..4c53e6587d97 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonTermsOfServiceServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonTermsOfServiceServiceStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTermsOfServiceServiceStub extends TermsOfServiceServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonUserServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonUserServiceCallableFactory.java
index c55176ff7dde..d9899a1841f8 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonUserServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonUserServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonUserServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonUserServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonUserServiceStub.java
index 01984c85d721..11f1c1ed7388 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonUserServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/HttpJsonUserServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonUserServiceStub extends UserServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/LfpProvidersServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/LfpProvidersServiceStub.java
index 794818927eb2..01bec6c818d2 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/LfpProvidersServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/LfpProvidersServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.shopping.merchant.accounts.v1.LinkLfpProviderRequest;
 import com.google.shopping.merchant.accounts.v1.LinkLfpProviderResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LfpProvidersServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/LfpProvidersServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/LfpProvidersServiceStubSettings.java
index 78bf3153374e..43626921fb56 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/LfpProvidersServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/LfpProvidersServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LfpProvidersServiceStubSettings extends StubSettings<LfpProvidersServiceStubSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/OmnichannelSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/OmnichannelSettingsServiceStub.java
index 1520d11bba14..c960b291a534 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/OmnichannelSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/OmnichannelSettingsServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.shopping.merchant.accounts.v1.RequestInventoryVerificationResponse;
 import com.google.shopping.merchant.accounts.v1.UpdateOmnichannelSettingRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class OmnichannelSettingsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/OmnichannelSettingsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/OmnichannelSettingsServiceStubSettings.java
index 3b4d9cfde75d..d845a717bfc6 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/OmnichannelSettingsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/OmnichannelSettingsServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class OmnichannelSettingsServiceStubSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/OnlineReturnPolicyServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/OnlineReturnPolicyServiceStub.java
index a0d6082e8319..3f91d8afd3ec 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/OnlineReturnPolicyServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/OnlineReturnPolicyServiceStub.java
@@ -28,6 +28,7 @@
 import com.google.shopping.merchant.accounts.v1.ListOnlineReturnPoliciesResponse;
 import com.google.shopping.merchant.accounts.v1.OnlineReturnPolicy;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class OnlineReturnPolicyServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/OnlineReturnPolicyServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/OnlineReturnPolicyServiceStubSettings.java
index d57e9821e6f6..abf96c214aaf 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/OnlineReturnPolicyServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/OnlineReturnPolicyServiceStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class OnlineReturnPolicyServiceStubSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/ProgramsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/ProgramsServiceStub.java
index 6c4436e52f57..feb7ce7e94e3 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/ProgramsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/ProgramsServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.shopping.merchant.accounts.v1.ListProgramsResponse;
 import com.google.shopping.merchant.accounts.v1.Program;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ProgramsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/ProgramsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/ProgramsServiceStubSettings.java
index 3e1f6d0d7ae7..c46d05998a61 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/ProgramsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/ProgramsServiceStubSettings.java
@@ -59,6 +59,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ProgramsServiceStubSettings extends StubSettings<ProgramsServiceStubSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/RegionsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/RegionsServiceStub.java
index 76b8df351af4..b902edb0ce4b 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/RegionsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/RegionsServiceStub.java
@@ -34,6 +34,7 @@
 import com.google.shopping.merchant.accounts.v1.Region;
 import com.google.shopping.merchant.accounts.v1.UpdateRegionRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/RegionsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/RegionsServiceStubSettings.java
index 47ac38c46a11..35280ddcb649 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/RegionsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/RegionsServiceStubSettings.java
@@ -66,6 +66,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionsServiceStubSettings extends StubSettings<RegionsServiceStubSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/ShippingSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/ShippingSettingsServiceStub.java
index 2702eb52a048..874ff287d285 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/ShippingSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/ShippingSettingsServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.shopping.merchant.accounts.v1.InsertShippingSettingsRequest;
 import com.google.shopping.merchant.accounts.v1.ShippingSettings;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ShippingSettingsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/ShippingSettingsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/ShippingSettingsServiceStubSettings.java
index 75c247ad65e2..bcbabc90dae1 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/ShippingSettingsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/ShippingSettingsServiceStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ShippingSettingsServiceStubSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/TermsOfServiceAgreementStateServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/TermsOfServiceAgreementStateServiceStub.java
index 6d6c1a8d034f..ed2da6293072 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/TermsOfServiceAgreementStateServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/TermsOfServiceAgreementStateServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.shopping.merchant.accounts.v1.RetrieveForApplicationTermsOfServiceAgreementStateRequest;
 import com.google.shopping.merchant.accounts.v1.TermsOfServiceAgreementState;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TermsOfServiceAgreementStateServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/TermsOfServiceAgreementStateServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/TermsOfServiceAgreementStateServiceStubSettings.java
index 233f0ebed9f8..bb4c468f50f1 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/TermsOfServiceAgreementStateServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/TermsOfServiceAgreementStateServiceStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TermsOfServiceAgreementStateServiceStubSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/TermsOfServiceServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/TermsOfServiceServiceStub.java
index 78945483baa5..85cdea270d65 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/TermsOfServiceServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/TermsOfServiceServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.shopping.merchant.accounts.v1.RetrieveLatestTermsOfServiceRequest;
 import com.google.shopping.merchant.accounts.v1.TermsOfService;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TermsOfServiceServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/TermsOfServiceServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/TermsOfServiceServiceStubSettings.java
index 31be1370976e..fa198daedf9a 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/TermsOfServiceServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/TermsOfServiceServiceStubSettings.java
@@ -49,6 +49,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TermsOfServiceServiceStubSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/UserServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/UserServiceStub.java
index 28f985fd0064..7e505eec581a 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/UserServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/UserServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.shopping.merchant.accounts.v1.User;
 import com.google.shopping.merchant.accounts.v1.VerifySelfRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class UserServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/UserServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/UserServiceStubSettings.java
index 9d801e2d8c12..aaffd5212170 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/UserServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1/stub/UserServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class UserServiceStubSettings extends StubSettings<UserServiceStubSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountIssueServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountIssueServiceClient.java
index bcbf6df90934..3868be6961a4 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountIssueServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountIssueServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -144,6 +145,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AccountIssueServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountIssueServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountIssueServiceSettings.java
index 09c7e19c0801..4fd6d8720652 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountIssueServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountIssueServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AccountIssueServiceSettings extends ClientSettings<AccountIssueServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountTaxServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountTaxServiceClient.java
index 11fff82fde88..4c47b44dce23 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountTaxServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountTaxServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -184,6 +185,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AccountTaxServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountTaxServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountTaxServiceSettings.java
index 272523e53158..9fd784a992d4 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountTaxServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountTaxServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AccountTaxServiceSettings extends ClientSettings<AccountTaxServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountsServiceClient.java
index 558736fd3fc6..eb6c5d1333b8 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountsServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -228,6 +229,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AccountsServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountsServiceSettings.java
index e31994bcbb31..c218dd7126fd 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountsServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AccountsServiceSettings extends ClientSettings<AccountsServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutofeedSettingsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutofeedSettingsServiceClient.java
index 752d96002bdb..12076bc32567 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutofeedSettingsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutofeedSettingsServiceClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AutofeedSettingsServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutofeedSettingsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutofeedSettingsServiceSettings.java
index 7449d2141950..830aad654307 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutofeedSettingsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutofeedSettingsServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AutofeedSettingsServiceSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutomaticImprovementsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutomaticImprovementsServiceClient.java
index 9df93303f1ff..de3548a8d9d8 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutomaticImprovementsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutomaticImprovementsServiceClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AutomaticImprovementsServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutomaticImprovementsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutomaticImprovementsServiceSettings.java
index 79807b57f2e4..a1f8daccfe77 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutomaticImprovementsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutomaticImprovementsServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AutomaticImprovementsServiceSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessIdentityServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessIdentityServiceClient.java
index c6c3f14cdaf7..d2c45f9815eb 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessIdentityServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessIdentityServiceClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class BusinessIdentityServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessIdentityServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessIdentityServiceSettings.java
index a216c329a222..a3ebffc13c2c 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessIdentityServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessIdentityServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class BusinessIdentityServiceSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessInfoServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessInfoServiceClient.java
index 4a9cf06849f7..8c4d1f7262e9 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessInfoServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessInfoServiceClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class BusinessInfoServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessInfoServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessInfoServiceSettings.java
index 986978ca6820..59fa04cb216e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessInfoServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessInfoServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class BusinessInfoServiceSettings extends ClientSettings<BusinessInfoServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/CheckoutSettingsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/CheckoutSettingsServiceClient.java
index e60896b6b726..f7a056c807b0 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/CheckoutSettingsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/CheckoutSettingsServiceClient.java
@@ -26,6 +26,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -192,6 +193,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CheckoutSettingsServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/CheckoutSettingsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/CheckoutSettingsServiceSettings.java
index 44f88c096fdd..5f133e2cb8c8 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/CheckoutSettingsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/CheckoutSettingsServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CheckoutSettingsServiceSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/EmailPreferencesServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/EmailPreferencesServiceClient.java
index a3e2dd6191ad..79da0d57eb8c 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/EmailPreferencesServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/EmailPreferencesServiceClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -159,6 +160,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EmailPreferencesServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/EmailPreferencesServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/EmailPreferencesServiceSettings.java
index 389b58a31d31..cb534cd5ea43 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/EmailPreferencesServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/EmailPreferencesServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EmailPreferencesServiceSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/GbpAccountsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/GbpAccountsServiceClient.java
index f1b737841515..9380af3a8e0f 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/GbpAccountsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/GbpAccountsServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -162,6 +163,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GbpAccountsServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/GbpAccountsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/GbpAccountsServiceSettings.java
index 130de9b217a7..e7d7d404d626 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/GbpAccountsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/GbpAccountsServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GbpAccountsServiceSettings extends ClientSettings<GbpAccountsServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/HomepageServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/HomepageServiceClient.java
index e1ad837855af..064520cceaf9 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/HomepageServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/HomepageServiceClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -180,6 +181,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HomepageServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/HomepageServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/HomepageServiceSettings.java
index aac6f304ef9a..20e88e6b8e8a 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/HomepageServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/HomepageServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HomepageServiceSettings extends ClientSettings<HomepageServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/LfpProvidersServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/LfpProvidersServiceClient.java
index 8d3a53301d8d..d6ca42688404 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/LfpProvidersServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/LfpProvidersServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -163,6 +164,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LfpProvidersServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/LfpProvidersServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/LfpProvidersServiceSettings.java
index 91f14cbd70ec..f2bda5caf63a 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/LfpProvidersServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/LfpProvidersServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LfpProvidersServiceSettings extends ClientSettings<LfpProvidersServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/OmnichannelSettingsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/OmnichannelSettingsServiceClient.java
index 5620a3dd9fa0..e5e967fccc79 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/OmnichannelSettingsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/OmnichannelSettingsServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -215,6 +216,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class OmnichannelSettingsServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/OmnichannelSettingsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/OmnichannelSettingsServiceSettings.java
index 8ce8bcfa7951..dd013e326a13 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/OmnichannelSettingsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/OmnichannelSettingsServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class OmnichannelSettingsServiceSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/OnlineReturnPolicyServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/OnlineReturnPolicyServiceClient.java
index 2d68d75c6dd6..1a1e47d624d8 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/OnlineReturnPolicyServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/OnlineReturnPolicyServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -225,6 +226,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class OnlineReturnPolicyServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/OnlineReturnPolicyServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/OnlineReturnPolicyServiceSettings.java
index 40add4a0f2cf..e5cdd6c0aac7 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/OnlineReturnPolicyServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/OnlineReturnPolicyServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class OnlineReturnPolicyServiceSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/ProgramsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/ProgramsServiceClient.java
index e557a73c22be..80bf9bbb759f 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/ProgramsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/ProgramsServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -206,6 +207,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProgramsServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/ProgramsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/ProgramsServiceSettings.java
index e70ea5d39bcd..6942fe7796ed 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/ProgramsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/ProgramsServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProgramsServiceSettings extends ClientSettings<ProgramsServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/RegionsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/RegionsServiceClient.java
index 80f6747b0b8b..21c268e5db3e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/RegionsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/RegionsServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -218,6 +219,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class RegionsServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/RegionsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/RegionsServiceSettings.java
index d54f4b88ce34..459d62481407 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/RegionsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/RegionsServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class RegionsServiceSettings extends ClientSettings<RegionsServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/ShippingSettingsServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/ShippingSettingsServiceClient.java
index 474cf7bb078a..a74cdaaa19a0 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/ShippingSettingsServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/ShippingSettingsServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -148,6 +149,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ShippingSettingsServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/ShippingSettingsServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/ShippingSettingsServiceSettings.java
index 429253610aca..614d6e6e0207 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/ShippingSettingsServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/ShippingSettingsServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ShippingSettingsServiceSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceAgreementStateServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceAgreementStateServiceClient.java
index 7159032f4599..4c9aaf95d4ce 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceAgreementStateServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceAgreementStateServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -157,6 +158,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TermsOfServiceAgreementStateServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceAgreementStateServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceAgreementStateServiceSettings.java
index e7c82dd33070..565a513e1ad2 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceAgreementStateServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceAgreementStateServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TermsOfServiceAgreementStateServiceSettings
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceServiceClient.java
index e8ee30896120..c56991c12e8b 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceServiceClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TermsOfServiceServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceServiceSettings.java
index 64b5b32b3d7d..bdc2318629a6 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TermsOfServiceServiceSettings extends ClientSettings<TermsOfServiceServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/UserServiceClient.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/UserServiceClient.java
index 8b0d3790af56..4e5110fea035 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/UserServiceClient.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/UserServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -213,6 +214,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class UserServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/UserServiceSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/UserServiceSettings.java
index 9044c8fddc64..1dcbc9ff735b 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/UserServiceSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/UserServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class UserServiceSettings extends ClientSettings<UserServiceSettings> {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountIssueServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountIssueServiceStub.java
index 919ff59ddac6..cec21f4a64fd 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountIssueServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountIssueServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.shopping.merchant.accounts.v1beta.ListAccountIssuesRequest;
 import com.google.shopping.merchant.accounts.v1beta.ListAccountIssuesResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AccountIssueServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountIssueServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountIssueServiceStubSettings.java
index d82296e90a06..fa81e9867b44 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountIssueServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountIssueServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountTaxServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountTaxServiceStub.java
index 9626e9c4671d..8facb7741736 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountTaxServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountTaxServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.shopping.merchant.accounts.v1beta.ListAccountTaxResponse;
 import com.google.shopping.merchant.accounts.v1beta.UpdateAccountTaxRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AccountTaxServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountTaxServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountTaxServiceStubSettings.java
index 9258bb6c9a85..537a2c238199 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountTaxServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountTaxServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountsServiceStub.java
index 8166df79028d..7d2c499e6a16 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountsServiceStub.java
@@ -33,6 +33,7 @@
 import com.google.shopping.merchant.accounts.v1beta.ListSubAccountsResponse;
 import com.google.shopping.merchant.accounts.v1beta.UpdateAccountRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AccountsServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountsServiceStubSettings.java
index dd441b689b63..07fa9f894e3b 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AccountsServiceStubSettings.java
@@ -64,6 +64,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AutofeedSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AutofeedSettingsServiceStub.java
index 1bfa016dd073..bd80c6c659cf 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AutofeedSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AutofeedSettingsServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.shopping.merchant.accounts.v1beta.GetAutofeedSettingsRequest;
 import com.google.shopping.merchant.accounts.v1beta.UpdateAutofeedSettingsRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AutofeedSettingsServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AutofeedSettingsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AutofeedSettingsServiceStubSettings.java
index f412e439bb7c..ff12093011b6 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AutofeedSettingsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AutofeedSettingsServiceStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AutomaticImprovementsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AutomaticImprovementsServiceStub.java
index 26ef47a88645..c1c6d830a8b7 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AutomaticImprovementsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AutomaticImprovementsServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.shopping.merchant.accounts.v1beta.GetAutomaticImprovementsRequest;
 import com.google.shopping.merchant.accounts.v1beta.UpdateAutomaticImprovementsRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AutomaticImprovementsServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AutomaticImprovementsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AutomaticImprovementsServiceStubSettings.java
index 2daef8040696..c53681b37e7b 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AutomaticImprovementsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/AutomaticImprovementsServiceStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/BusinessIdentityServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/BusinessIdentityServiceStub.java
index 5174a95812c2..9b801f1ca84a 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/BusinessIdentityServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/BusinessIdentityServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.shopping.merchant.accounts.v1beta.GetBusinessIdentityRequest;
 import com.google.shopping.merchant.accounts.v1beta.UpdateBusinessIdentityRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class BusinessIdentityServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/BusinessIdentityServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/BusinessIdentityServiceStubSettings.java
index d4326e17f101..be5b8705b00e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/BusinessIdentityServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/BusinessIdentityServiceStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/BusinessInfoServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/BusinessInfoServiceStub.java
index 7b38f3b163e2..37937d5a3c54 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/BusinessInfoServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/BusinessInfoServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.shopping.merchant.accounts.v1beta.GetBusinessInfoRequest;
 import com.google.shopping.merchant.accounts.v1beta.UpdateBusinessInfoRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class BusinessInfoServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/BusinessInfoServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/BusinessInfoServiceStubSettings.java
index 1548b0cfc888..caa9b63227ee 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/BusinessInfoServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/BusinessInfoServiceStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/CheckoutSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/CheckoutSettingsServiceStub.java
index ca44a707ef66..fc7c364aa07f 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/CheckoutSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/CheckoutSettingsServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.shopping.merchant.accounts.v1beta.GetCheckoutSettingsRequest;
 import com.google.shopping.merchant.accounts.v1beta.UpdateCheckoutSettingsRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CheckoutSettingsServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/CheckoutSettingsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/CheckoutSettingsServiceStubSettings.java
index 8807ad4e84a3..fa2ea3bbb183 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/CheckoutSettingsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/CheckoutSettingsServiceStubSettings.java
@@ -50,6 +50,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/EmailPreferencesServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/EmailPreferencesServiceStub.java
index 394ec831ef6a..3ca491e36984 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/EmailPreferencesServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/EmailPreferencesServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.shopping.merchant.accounts.v1beta.GetEmailPreferencesRequest;
 import com.google.shopping.merchant.accounts.v1beta.UpdateEmailPreferencesRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class EmailPreferencesServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/EmailPreferencesServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/EmailPreferencesServiceStubSettings.java
index b3d8eb68dad8..deaccaa29776 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/EmailPreferencesServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/EmailPreferencesServiceStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GbpAccountsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GbpAccountsServiceStub.java
index 78d63c0883ce..ee8f472180ed 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GbpAccountsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GbpAccountsServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.shopping.merchant.accounts.v1beta.ListGbpAccountsRequest;
 import com.google.shopping.merchant.accounts.v1beta.ListGbpAccountsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class GbpAccountsServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GbpAccountsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GbpAccountsServiceStubSettings.java
index 27d50c81b201..9c4deb6f33cb 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GbpAccountsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GbpAccountsServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountIssueServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountIssueServiceCallableFactory.java
index 66cb62a73184..a37f7e63a5af 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountIssueServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountIssueServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAccountIssueServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountIssueServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountIssueServiceStub.java
index 5efeac74f78a..6f9d73a93b3e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountIssueServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountIssueServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAccountIssueServiceStub extends AccountIssueServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountTaxServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountTaxServiceCallableFactory.java
index b52abccdc784..9f71dda68cad 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountTaxServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountTaxServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAccountTaxServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountTaxServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountTaxServiceStub.java
index 56c5dfc9c7f3..eba0369a841a 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountTaxServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountTaxServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAccountTaxServiceStub extends AccountTaxServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountsServiceCallableFactory.java
index a51169d93716..19df6dd07127 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAccountsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountsServiceStub.java
index 5ffcee9d4331..6c03036ed541 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAccountsServiceStub.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAccountsServiceStub extends AccountsServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAutofeedSettingsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAutofeedSettingsServiceCallableFactory.java
index e2a8eb181ea1..d2dad94d4bfd 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAutofeedSettingsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAutofeedSettingsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAutofeedSettingsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAutofeedSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAutofeedSettingsServiceStub.java
index bc19efa5a146..69c7c41fb96e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAutofeedSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAutofeedSettingsServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAutofeedSettingsServiceStub extends AutofeedSettingsServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAutomaticImprovementsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAutomaticImprovementsServiceCallableFactory.java
index 2cbf0dfa4fc6..02e3143dec2a 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAutomaticImprovementsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAutomaticImprovementsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAutomaticImprovementsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAutomaticImprovementsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAutomaticImprovementsServiceStub.java
index 107aa3cc2d06..275368859655 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAutomaticImprovementsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcAutomaticImprovementsServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAutomaticImprovementsServiceStub extends AutomaticImprovementsServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcBusinessIdentityServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcBusinessIdentityServiceCallableFactory.java
index f698b14c43e6..26c7ca6831d4 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcBusinessIdentityServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcBusinessIdentityServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcBusinessIdentityServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcBusinessIdentityServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcBusinessIdentityServiceStub.java
index fb4ce99e5ae6..c1b93b6cb7dc 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcBusinessIdentityServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcBusinessIdentityServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcBusinessIdentityServiceStub extends BusinessIdentityServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcBusinessInfoServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcBusinessInfoServiceCallableFactory.java
index 2a68e5c8c060..85527e3c890a 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcBusinessInfoServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcBusinessInfoServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcBusinessInfoServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcBusinessInfoServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcBusinessInfoServiceStub.java
index 711939002c66..873647e458de 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcBusinessInfoServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcBusinessInfoServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcBusinessInfoServiceStub extends BusinessInfoServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcCheckoutSettingsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcCheckoutSettingsServiceCallableFactory.java
index ef15c5c1e356..fbc496e9ff6d 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcCheckoutSettingsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcCheckoutSettingsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCheckoutSettingsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcCheckoutSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcCheckoutSettingsServiceStub.java
index 67b120d40256..09e0364aeee8 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcCheckoutSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcCheckoutSettingsServiceStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCheckoutSettingsServiceStub extends CheckoutSettingsServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcEmailPreferencesServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcEmailPreferencesServiceCallableFactory.java
index a8bfbd59dc5c..d5a4771c7e39 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcEmailPreferencesServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcEmailPreferencesServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEmailPreferencesServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcEmailPreferencesServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcEmailPreferencesServiceStub.java
index eea024887a49..2901a9a22bec 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcEmailPreferencesServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcEmailPreferencesServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEmailPreferencesServiceStub extends EmailPreferencesServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcGbpAccountsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcGbpAccountsServiceCallableFactory.java
index 70bc76db2c0e..c22e8dad377d 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcGbpAccountsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcGbpAccountsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGbpAccountsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcGbpAccountsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcGbpAccountsServiceStub.java
index b1054e937761..2307e739cbd5 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcGbpAccountsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcGbpAccountsServiceStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcGbpAccountsServiceStub extends GbpAccountsServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcHomepageServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcHomepageServiceCallableFactory.java
index bd78e91fe156..9dbd29d7e599 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcHomepageServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcHomepageServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcHomepageServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcHomepageServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcHomepageServiceStub.java
index ea005baf8814..c93826e877e8 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcHomepageServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcHomepageServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcHomepageServiceStub extends HomepageServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcLfpProvidersServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcLfpProvidersServiceCallableFactory.java
index b016025cc232..958f14e449d8 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcLfpProvidersServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcLfpProvidersServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLfpProvidersServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcLfpProvidersServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcLfpProvidersServiceStub.java
index 4f9d5cbd685b..ac0696733884 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcLfpProvidersServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcLfpProvidersServiceStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLfpProvidersServiceStub extends LfpProvidersServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcOmnichannelSettingsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcOmnichannelSettingsServiceCallableFactory.java
index 78330f80fd48..3c250d7ae412 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcOmnichannelSettingsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcOmnichannelSettingsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcOmnichannelSettingsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcOmnichannelSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcOmnichannelSettingsServiceStub.java
index dfc97f4f6bde..9b87e1907ae3 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcOmnichannelSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcOmnichannelSettingsServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcOmnichannelSettingsServiceStub extends OmnichannelSettingsServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcOnlineReturnPolicyServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcOnlineReturnPolicyServiceCallableFactory.java
index 000fedb09401..067af4df6e78 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcOnlineReturnPolicyServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcOnlineReturnPolicyServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcOnlineReturnPolicyServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcOnlineReturnPolicyServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcOnlineReturnPolicyServiceStub.java
index bfd9aa0b04c2..1868fe90d11d 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcOnlineReturnPolicyServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcOnlineReturnPolicyServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcOnlineReturnPolicyServiceStub extends OnlineReturnPolicyServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcProgramsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcProgramsServiceCallableFactory.java
index 8b4b55638522..db4062b61b3d 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcProgramsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcProgramsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProgramsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcProgramsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcProgramsServiceStub.java
index 6c44880c826e..6b33568226fa 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcProgramsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcProgramsServiceStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProgramsServiceStub extends ProgramsServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcRegionsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcRegionsServiceCallableFactory.java
index ca66a08dea02..5354c8be3cf2 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcRegionsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcRegionsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcRegionsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcRegionsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcRegionsServiceStub.java
index 180225975175..7c01695c3f50 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcRegionsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcRegionsServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcRegionsServiceStub extends RegionsServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcShippingSettingsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcShippingSettingsServiceCallableFactory.java
index 67ab6bc6c9dc..615a64e45e1a 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcShippingSettingsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcShippingSettingsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcShippingSettingsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcShippingSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcShippingSettingsServiceStub.java
index 2eec0d70081b..26d61b81e1c0 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcShippingSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcShippingSettingsServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcShippingSettingsServiceStub extends ShippingSettingsServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcTermsOfServiceAgreementStateServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcTermsOfServiceAgreementStateServiceCallableFactory.java
index bf9e3c812680..49a467190e73 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcTermsOfServiceAgreementStateServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcTermsOfServiceAgreementStateServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTermsOfServiceAgreementStateServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcTermsOfServiceAgreementStateServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcTermsOfServiceAgreementStateServiceStub.java
index e5584e569220..794bdbb829d6 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcTermsOfServiceAgreementStateServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcTermsOfServiceAgreementStateServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTermsOfServiceAgreementStateServiceStub
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcTermsOfServiceServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcTermsOfServiceServiceCallableFactory.java
index 241e153afa33..d0038360678d 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcTermsOfServiceServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcTermsOfServiceServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTermsOfServiceServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcTermsOfServiceServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcTermsOfServiceServiceStub.java
index 300fcc3bc4ce..ef40b6bb3f42 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcTermsOfServiceServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcTermsOfServiceServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTermsOfServiceServiceStub extends TermsOfServiceServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcUserServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcUserServiceCallableFactory.java
index 151971246bd9..f58fa6d2957d 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcUserServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcUserServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcUserServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcUserServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcUserServiceStub.java
index 9f71138532a9..2f8a92880ff6 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcUserServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/GrpcUserServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcUserServiceStub extends UserServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HomepageServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HomepageServiceStub.java
index 9192816cd189..87e53873a992 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HomepageServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HomepageServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.shopping.merchant.accounts.v1beta.UnclaimHomepageRequest;
 import com.google.shopping.merchant.accounts.v1beta.UpdateHomepageRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class HomepageServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HomepageServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HomepageServiceStubSettings.java
index e40017ffe8d9..f4f479971773 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HomepageServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HomepageServiceStubSettings.java
@@ -49,6 +49,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountIssueServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountIssueServiceCallableFactory.java
index ad3806b2f1aa..174ba529c7ff 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountIssueServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountIssueServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountIssueServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountIssueServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountIssueServiceStub.java
index 77ef994597ac..e76c561001f1 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountIssueServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountIssueServiceStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountIssueServiceStub extends AccountIssueServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountTaxServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountTaxServiceCallableFactory.java
index e42895010072..0e690dba8324 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountTaxServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountTaxServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountTaxServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountTaxServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountTaxServiceStub.java
index 3e130b559a57..917bc3c77ace 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountTaxServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountTaxServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountTaxServiceStub extends AccountTaxServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountsServiceCallableFactory.java
index 64b2ed911b44..52ff984cb92b 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountsServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountsServiceStub.java
index 0a2cb0a31838..54b39c733e22 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAccountsServiceStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountsServiceStub extends AccountsServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAutofeedSettingsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAutofeedSettingsServiceCallableFactory.java
index 4ce59a3b40da..97a287b236a2 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAutofeedSettingsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAutofeedSettingsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAutofeedSettingsServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAutofeedSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAutofeedSettingsServiceStub.java
index 88ebda40aa93..6dbd34880e5b 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAutofeedSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAutofeedSettingsServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAutofeedSettingsServiceStub extends AutofeedSettingsServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAutomaticImprovementsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAutomaticImprovementsServiceCallableFactory.java
index 595e9bf450b6..1d6a3589794c 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAutomaticImprovementsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAutomaticImprovementsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAutomaticImprovementsServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAutomaticImprovementsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAutomaticImprovementsServiceStub.java
index 550b73da3bae..0d6c46cce421 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAutomaticImprovementsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonAutomaticImprovementsServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAutomaticImprovementsServiceStub extends AutomaticImprovementsServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonBusinessIdentityServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonBusinessIdentityServiceCallableFactory.java
index 8b0047158831..6e74a603b3f6 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonBusinessIdentityServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonBusinessIdentityServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonBusinessIdentityServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonBusinessIdentityServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonBusinessIdentityServiceStub.java
index ebbe73a6e720..3aa19a1f3a7b 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonBusinessIdentityServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonBusinessIdentityServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonBusinessIdentityServiceStub extends BusinessIdentityServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonBusinessInfoServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonBusinessInfoServiceCallableFactory.java
index b85d24b8229d..a01230554b44 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonBusinessInfoServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonBusinessInfoServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonBusinessInfoServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonBusinessInfoServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonBusinessInfoServiceStub.java
index 4ddc172cf8ca..e42aa8385296 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonBusinessInfoServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonBusinessInfoServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonBusinessInfoServiceStub extends BusinessInfoServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonCheckoutSettingsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonCheckoutSettingsServiceCallableFactory.java
index 301524c3b4ac..695c21beada0 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonCheckoutSettingsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonCheckoutSettingsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCheckoutSettingsServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonCheckoutSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonCheckoutSettingsServiceStub.java
index 368617297737..fe74253227e2 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonCheckoutSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonCheckoutSettingsServiceStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCheckoutSettingsServiceStub extends CheckoutSettingsServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonEmailPreferencesServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonEmailPreferencesServiceCallableFactory.java
index e4bdcbf4c0c1..915bbfd8fd33 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonEmailPreferencesServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonEmailPreferencesServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEmailPreferencesServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonEmailPreferencesServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonEmailPreferencesServiceStub.java
index 808735797c28..0a8207cec398 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonEmailPreferencesServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonEmailPreferencesServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEmailPreferencesServiceStub extends EmailPreferencesServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonGbpAccountsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonGbpAccountsServiceCallableFactory.java
index d315ce938e7f..04498d3402fd 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonGbpAccountsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonGbpAccountsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGbpAccountsServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonGbpAccountsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonGbpAccountsServiceStub.java
index 5c382c430984..b30ebc04315a 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonGbpAccountsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonGbpAccountsServiceStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonGbpAccountsServiceStub extends GbpAccountsServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonHomepageServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonHomepageServiceCallableFactory.java
index 35bbbcbe6f93..64774b162e6e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonHomepageServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonHomepageServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonHomepageServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonHomepageServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonHomepageServiceStub.java
index 1aaca1aaac38..d3726119044b 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonHomepageServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonHomepageServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonHomepageServiceStub extends HomepageServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonLfpProvidersServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonLfpProvidersServiceCallableFactory.java
index a3c856c200d8..a36e0a839a8d 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonLfpProvidersServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonLfpProvidersServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpProvidersServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonLfpProvidersServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonLfpProvidersServiceStub.java
index 1ab2f348c554..513c444174e1 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonLfpProvidersServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonLfpProvidersServiceStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpProvidersServiceStub extends LfpProvidersServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonOmnichannelSettingsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonOmnichannelSettingsServiceCallableFactory.java
index 8333da8681a6..69961fa51fd7 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonOmnichannelSettingsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonOmnichannelSettingsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonOmnichannelSettingsServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonOmnichannelSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonOmnichannelSettingsServiceStub.java
index dbd62ef3f422..fc1f30a0092b 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonOmnichannelSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonOmnichannelSettingsServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonOmnichannelSettingsServiceStub extends OmnichannelSettingsServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonOnlineReturnPolicyServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonOnlineReturnPolicyServiceCallableFactory.java
index 18cb9ff368f1..36dea7a963d2 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonOnlineReturnPolicyServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonOnlineReturnPolicyServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonOnlineReturnPolicyServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonOnlineReturnPolicyServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonOnlineReturnPolicyServiceStub.java
index a4a924eadd6d..4f9de71a0550 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonOnlineReturnPolicyServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonOnlineReturnPolicyServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonOnlineReturnPolicyServiceStub extends OnlineReturnPolicyServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonProgramsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonProgramsServiceCallableFactory.java
index 09f8594bd429..cbefaec58073 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonProgramsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonProgramsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProgramsServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonProgramsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonProgramsServiceStub.java
index a00fc55e66bb..5e8bd4980e3e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonProgramsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonProgramsServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProgramsServiceStub extends ProgramsServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonRegionsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonRegionsServiceCallableFactory.java
index f52f9798a2bc..f17d7723d282 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonRegionsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonRegionsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionsServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonRegionsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonRegionsServiceStub.java
index afb66fe01500..5156415f7f50 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonRegionsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonRegionsServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionsServiceStub extends RegionsServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonShippingSettingsServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonShippingSettingsServiceCallableFactory.java
index 89082a6bfb63..2743012f39f1 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonShippingSettingsServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonShippingSettingsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonShippingSettingsServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonShippingSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonShippingSettingsServiceStub.java
index 0f4be3e2721d..cdd3c08b082e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonShippingSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonShippingSettingsServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonShippingSettingsServiceStub extends ShippingSettingsServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonTermsOfServiceAgreementStateServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonTermsOfServiceAgreementStateServiceCallableFactory.java
index 7d1c7eaf78db..55fd86d57767 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonTermsOfServiceAgreementStateServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonTermsOfServiceAgreementStateServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTermsOfServiceAgreementStateServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonTermsOfServiceAgreementStateServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonTermsOfServiceAgreementStateServiceStub.java
index b8c82f8a1b42..cae028596ad9 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonTermsOfServiceAgreementStateServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonTermsOfServiceAgreementStateServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTermsOfServiceAgreementStateServiceStub
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonTermsOfServiceServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonTermsOfServiceServiceCallableFactory.java
index 6f86b2914793..033073f23515 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonTermsOfServiceServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonTermsOfServiceServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTermsOfServiceServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonTermsOfServiceServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonTermsOfServiceServiceStub.java
index 49114071cd1c..3d5380cc73d5 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonTermsOfServiceServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonTermsOfServiceServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTermsOfServiceServiceStub extends TermsOfServiceServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonUserServiceCallableFactory.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonUserServiceCallableFactory.java
index 06a041ad5eff..330cf8dc3165 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonUserServiceCallableFactory.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonUserServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonUserServiceCallableFactory
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonUserServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonUserServiceStub.java
index 5b96980c476e..5c2b7e0ff513 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonUserServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/HttpJsonUserServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonUserServiceStub extends UserServiceStub {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/LfpProvidersServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/LfpProvidersServiceStub.java
index 29b5812b4658..1ca661ab586d 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/LfpProvidersServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/LfpProvidersServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.shopping.merchant.accounts.v1beta.LinkLfpProviderRequest;
 import com.google.shopping.merchant.accounts.v1beta.LinkLfpProviderResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class LfpProvidersServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/LfpProvidersServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/LfpProvidersServiceStubSettings.java
index 43f3f8d89e0f..7a6f9b7d792e 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/LfpProvidersServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/LfpProvidersServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/OmnichannelSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/OmnichannelSettingsServiceStub.java
index c7d52905d2eb..f09e148038e5 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/OmnichannelSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/OmnichannelSettingsServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.shopping.merchant.accounts.v1beta.RequestInventoryVerificationResponse;
 import com.google.shopping.merchant.accounts.v1beta.UpdateOmnichannelSettingRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class OmnichannelSettingsServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/OmnichannelSettingsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/OmnichannelSettingsServiceStubSettings.java
index 6e195a70d4a8..d60cd6af74de 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/OmnichannelSettingsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/OmnichannelSettingsServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/OnlineReturnPolicyServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/OnlineReturnPolicyServiceStub.java
index 2873071136d0..b4a07e6b0b48 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/OnlineReturnPolicyServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/OnlineReturnPolicyServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.shopping.merchant.accounts.v1beta.OnlineReturnPolicy;
 import com.google.shopping.merchant.accounts.v1beta.UpdateOnlineReturnPolicyRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class OnlineReturnPolicyServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/OnlineReturnPolicyServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/OnlineReturnPolicyServiceStubSettings.java
index 89b0dcfd3401..00ae78bc6896 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/OnlineReturnPolicyServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/OnlineReturnPolicyServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/ProgramsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/ProgramsServiceStub.java
index 9fc100a0752a..7bb10f4b6e9f 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/ProgramsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/ProgramsServiceStub.java
@@ -28,6 +28,7 @@
 import com.google.shopping.merchant.accounts.v1beta.ListProgramsResponse;
 import com.google.shopping.merchant.accounts.v1beta.Program;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ProgramsServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/ProgramsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/ProgramsServiceStubSettings.java
index 77a01d79e208..ec2c28ee33a8 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/ProgramsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/ProgramsServiceStubSettings.java
@@ -59,6 +59,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/RegionsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/RegionsServiceStub.java
index ad8a98dd06c7..339a266d264c 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/RegionsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/RegionsServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.shopping.merchant.accounts.v1beta.Region;
 import com.google.shopping.merchant.accounts.v1beta.UpdateRegionRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class RegionsServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/RegionsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/RegionsServiceStubSettings.java
index 596c9bcb0c62..f7d5b51c0564 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/RegionsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/RegionsServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/ShippingSettingsServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/ShippingSettingsServiceStub.java
index 57edbc815f69..09b4154c6087 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/ShippingSettingsServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/ShippingSettingsServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.shopping.merchant.accounts.v1beta.InsertShippingSettingsRequest;
 import com.google.shopping.merchant.accounts.v1beta.ShippingSettings;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ShippingSettingsServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/ShippingSettingsServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/ShippingSettingsServiceStubSettings.java
index b25b4a12fcea..7addc9b3a9cc 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/ShippingSettingsServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/ShippingSettingsServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/TermsOfServiceAgreementStateServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/TermsOfServiceAgreementStateServiceStub.java
index 27c6928db076..0936d6b22a48 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/TermsOfServiceAgreementStateServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/TermsOfServiceAgreementStateServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.shopping.merchant.accounts.v1beta.RetrieveForApplicationTermsOfServiceAgreementStateRequest;
 import com.google.shopping.merchant.accounts.v1beta.TermsOfServiceAgreementState;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class TermsOfServiceAgreementStateServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/TermsOfServiceAgreementStateServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/TermsOfServiceAgreementStateServiceStubSettings.java
index 987f2312aa96..8990e41bfe1d 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/TermsOfServiceAgreementStateServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/TermsOfServiceAgreementStateServiceStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/TermsOfServiceServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/TermsOfServiceServiceStub.java
index 5a671936bc68..6f368ad79ece 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/TermsOfServiceServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/TermsOfServiceServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.shopping.merchant.accounts.v1beta.RetrieveLatestTermsOfServiceRequest;
 import com.google.shopping.merchant.accounts.v1beta.TermsOfService;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class TermsOfServiceServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/TermsOfServiceServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/TermsOfServiceServiceStubSettings.java
index 5cf778b18595..dd9067cad4ed 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/TermsOfServiceServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/TermsOfServiceServiceStubSettings.java
@@ -49,6 +49,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/UserServiceStub.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/UserServiceStub.java
index af1a7caad0dc..217a01f70ceb 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/UserServiceStub.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/UserServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.shopping.merchant.accounts.v1beta.UpdateUserRequest;
 import com.google.shopping.merchant.accounts.v1beta.User;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class UserServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/UserServiceStubSettings.java b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/UserServiceStubSettings.java
index 1ff8da0ae561..103f3b1a3a22 100644
--- a/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/UserServiceStubSettings.java
+++ b/java-shopping-merchant-accounts/google-shopping-merchant-accounts/src/main/java/com/google/shopping/merchant/accounts/v1beta/stub/UserServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AccountName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AccountName.java
index e4b8b8cfc645..22ad1f4d008f 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AccountName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AccountRelationshipName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AccountRelationshipName.java
index 079c58af2d03..40fd5c1703ae 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AccountRelationshipName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AccountRelationshipName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountRelationshipName implements ResourceName {
   private static final PathTemplate ACCOUNT_RELATIONSHIP =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AccountServiceName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AccountServiceName.java
index 716cb6471402..4557c7ac50be 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AccountServiceName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AccountServiceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountServiceName implements ResourceName {
   private static final PathTemplate ACCOUNT_SERVICE =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AutofeedSettingsName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AutofeedSettingsName.java
index 6fde9da59196..067b4a3934b0 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AutofeedSettingsName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AutofeedSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutofeedSettingsName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AutomaticImprovementsName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AutomaticImprovementsName.java
index 094353316f39..36573ee744f7 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AutomaticImprovementsName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/AutomaticImprovementsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutomaticImprovementsName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessIdentityName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessIdentityName.java
index 6a95ad14d451..fa67eeadd1be 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessIdentityName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessIdentityName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BusinessIdentityName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessInfoName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessInfoName.java
index c96cc983307d..45338a7d2ff5 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessInfoName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/BusinessInfoName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BusinessInfoName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/CheckoutSettingsName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/CheckoutSettingsName.java
index ae9a73ad4abb..ccc26211dc6d 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/CheckoutSettingsName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/CheckoutSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CheckoutSettingsName implements ResourceName {
   private static final PathTemplate ACCOUNT_PROGRAM =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/DeveloperRegistrationName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/DeveloperRegistrationName.java
index 4953fd2e463d..3a2b44874011 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/DeveloperRegistrationName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/DeveloperRegistrationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeveloperRegistrationName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/EmailPreferencesName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/EmailPreferencesName.java
index 3d9c918b926d..a5e231a3d52d 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/EmailPreferencesName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/EmailPreferencesName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EmailPreferencesName implements ResourceName {
   private static final PathTemplate ACCOUNT_EMAIL =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/HomepageName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/HomepageName.java
index 29de63344148..ce1404768b8a 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/HomepageName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/HomepageName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HomepageName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/LfpProviderName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/LfpProviderName.java
index 7af8d2396acf..c0109c0a8b38 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/LfpProviderName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/LfpProviderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LfpProviderName implements ResourceName {
   private static final PathTemplate ACCOUNT_OMNICHANNEL_SETTING_LFP_PROVIDER =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/OmnichannelSettingName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/OmnichannelSettingName.java
index c5ca4f667d4e..4b2c38508bff 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/OmnichannelSettingName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/OmnichannelSettingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OmnichannelSettingName implements ResourceName {
   private static final PathTemplate ACCOUNT_OMNICHANNEL_SETTING =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/OnlineReturnPolicyName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/OnlineReturnPolicyName.java
index 3bb01657d118..a0c1df3caa8b 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/OnlineReturnPolicyName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/OnlineReturnPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OnlineReturnPolicyName implements ResourceName {
   private static final PathTemplate ACCOUNT_RETURN_POLICY =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/ProgramName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/ProgramName.java
index 65503809549c..0663bd99459c 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/ProgramName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/ProgramName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProgramName implements ResourceName {
   private static final PathTemplate ACCOUNT_PROGRAM =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/RegionName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/RegionName.java
index 1ba7ec15dd4e..b1afcf38247c 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/RegionName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/RegionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionName implements ResourceName {
   private static final PathTemplate ACCOUNT_REGION =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/ShippingSettingsName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/ShippingSettingsName.java
index 4b6e81763846..8206c9c0d8b7 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/ShippingSettingsName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/ShippingSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ShippingSettingsName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceAgreementStateName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceAgreementStateName.java
index e778b84a0e0e..498a0e7c27db 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceAgreementStateName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceAgreementStateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TermsOfServiceAgreementStateName implements ResourceName {
   private static final PathTemplate ACCOUNT_IDENTIFIER =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceName.java
index ecf10ec95e2a..fedf39d43451 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/TermsOfServiceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TermsOfServiceName implements ResourceName {
   private static final PathTemplate VERSION =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/UserName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/UserName.java
index 549af06e123e..7cd55acceb2d 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/UserName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1/src/main/java/com/google/shopping/merchant/accounts/v1/UserName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserName implements ResourceName {
   private static final PathTemplate ACCOUNT_EMAIL =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountName.java
index 074e9807840c..d4e228cc316b 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountTaxName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountTaxName.java
index b6d4110d0a25..0c06b267ec66 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountTaxName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/AccountTaxName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountTaxName implements ResourceName {
   private static final PathTemplate ACCOUNT_TAX =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutofeedSettingsName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutofeedSettingsName.java
index cc48e656cba7..2becc9309f1d 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutofeedSettingsName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutofeedSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutofeedSettingsName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutomaticImprovementsName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutomaticImprovementsName.java
index d1972ca4a903..b9ef3a230571 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutomaticImprovementsName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/AutomaticImprovementsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AutomaticImprovementsName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessIdentityName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessIdentityName.java
index 9292048f0477..a71c2b90056b 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessIdentityName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessIdentityName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BusinessIdentityName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessInfoName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessInfoName.java
index dead2b89d88f..21676a73bca9 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessInfoName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/BusinessInfoName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BusinessInfoName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/CheckoutSettingsName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/CheckoutSettingsName.java
index 673187f069e9..a7b6795aa674 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/CheckoutSettingsName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/CheckoutSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CheckoutSettingsName implements ResourceName {
   private static final PathTemplate ACCOUNT_PROGRAM =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/EmailPreferencesName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/EmailPreferencesName.java
index b5f077db073f..6863be934ead 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/EmailPreferencesName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/EmailPreferencesName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EmailPreferencesName implements ResourceName {
   private static final PathTemplate ACCOUNT_EMAIL =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/HomepageName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/HomepageName.java
index aed432808abf..cfe296006f4d 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/HomepageName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/HomepageName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HomepageName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/LfpProviderName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/LfpProviderName.java
index dcadfe32e884..71643eeadb58 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/LfpProviderName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/LfpProviderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LfpProviderName implements ResourceName {
   private static final PathTemplate ACCOUNT_OMNICHANNEL_SETTING_LFP_PROVIDER =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/OmnichannelSettingName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/OmnichannelSettingName.java
index b29aa934be38..badbba10ae10 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/OmnichannelSettingName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/OmnichannelSettingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OmnichannelSettingName implements ResourceName {
   private static final PathTemplate ACCOUNT_OMNICHANNEL_SETTING =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/OnlineReturnPolicyName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/OnlineReturnPolicyName.java
index 2f03ce3524e2..7af177c59ee8 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/OnlineReturnPolicyName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/OnlineReturnPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OnlineReturnPolicyName implements ResourceName {
   private static final PathTemplate ACCOUNT_RETURN_POLICY =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/ProgramName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/ProgramName.java
index 32771574debb..aa32990d7f81 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/ProgramName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/ProgramName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProgramName implements ResourceName {
   private static final PathTemplate ACCOUNT_PROGRAM =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/RegionName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/RegionName.java
index 5c4ed2aaecbb..7fbf71cbe565 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/RegionName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/RegionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionName implements ResourceName {
   private static final PathTemplate ACCOUNT_REGION =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/ShippingSettingsName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/ShippingSettingsName.java
index 6ce42d65daed..d23c9fe33123 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/ShippingSettingsName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/ShippingSettingsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ShippingSettingsName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceAgreementStateName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceAgreementStateName.java
index 9cccaaf0ffd6..824bf5146c01 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceAgreementStateName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceAgreementStateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TermsOfServiceAgreementStateName implements ResourceName {
   private static final PathTemplate ACCOUNT_IDENTIFIER =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceName.java
index cf124b8098c6..3a0f3237fe2d 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/TermsOfServiceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TermsOfServiceName implements ResourceName {
   private static final PathTemplate VERSION =
diff --git a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/UserName.java b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/UserName.java
index 3b32a7da4d61..dfaec905dcee 100644
--- a/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/UserName.java
+++ b/java-shopping-merchant-accounts/proto-google-shopping-merchant-accounts-v1beta/src/main/java/com/google/shopping/merchant/accounts/v1beta/UserName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UserName implements ResourceName {
   private static final PathTemplate ACCOUNT_EMAIL =
diff --git a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/ConversionSourcesServiceClient.java b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/ConversionSourcesServiceClient.java
index b5e2f540a857..f02810ca0c8d 100644
--- a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/ConversionSourcesServiceClient.java
+++ b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/ConversionSourcesServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -234,6 +235,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversionSourcesServiceClient implements BackgroundResource {
   private final ConversionSourcesServiceSettings settings;
diff --git a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/ConversionSourcesServiceSettings.java b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/ConversionSourcesServiceSettings.java
index 17072da6c0cc..79a775b41e4d 100644
--- a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/ConversionSourcesServiceSettings.java
+++ b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/ConversionSourcesServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversionSourcesServiceSettings
     extends ClientSettings<ConversionSourcesServiceSettings> {
diff --git a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/ConversionSourcesServiceStub.java b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/ConversionSourcesServiceStub.java
index eadda574e91c..9e2d9b45958c 100644
--- a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/ConversionSourcesServiceStub.java
+++ b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/ConversionSourcesServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.shopping.merchant.conversions.v1.UndeleteConversionSourceRequest;
 import com.google.shopping.merchant.conversions.v1.UpdateConversionSourceRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ConversionSourcesServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/ConversionSourcesServiceStubSettings.java b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/ConversionSourcesServiceStubSettings.java
index a6453a367a28..305f83047f1f 100644
--- a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/ConversionSourcesServiceStubSettings.java
+++ b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/ConversionSourcesServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ConversionSourcesServiceStubSettings
diff --git a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/GrpcConversionSourcesServiceCallableFactory.java b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/GrpcConversionSourcesServiceCallableFactory.java
index 88d288294d5a..877a7c06f10f 100644
--- a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/GrpcConversionSourcesServiceCallableFactory.java
+++ b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/GrpcConversionSourcesServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConversionSourcesServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/GrpcConversionSourcesServiceStub.java b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/GrpcConversionSourcesServiceStub.java
index f7ff47c7b838..45f2b322a3ff 100644
--- a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/GrpcConversionSourcesServiceStub.java
+++ b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/GrpcConversionSourcesServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcConversionSourcesServiceStub extends ConversionSourcesServiceStub {
   private static final MethodDescriptor<CreateConversionSourceRequest, ConversionSource>
diff --git a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/HttpJsonConversionSourcesServiceCallableFactory.java b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/HttpJsonConversionSourcesServiceCallableFactory.java
index 41d4ba87f68d..48ea2f4f82c5 100644
--- a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/HttpJsonConversionSourcesServiceCallableFactory.java
+++ b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/HttpJsonConversionSourcesServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConversionSourcesServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/HttpJsonConversionSourcesServiceStub.java b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/HttpJsonConversionSourcesServiceStub.java
index 397b817beba2..200cb8641641 100644
--- a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/HttpJsonConversionSourcesServiceStub.java
+++ b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1/stub/HttpJsonConversionSourcesServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonConversionSourcesServiceStub extends ConversionSourcesServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/ConversionSourcesServiceClient.java b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/ConversionSourcesServiceClient.java
index be5ea0522a77..85b7a734ef4e 100644
--- a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/ConversionSourcesServiceClient.java
+++ b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/ConversionSourcesServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -235,6 +236,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConversionSourcesServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/ConversionSourcesServiceSettings.java b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/ConversionSourcesServiceSettings.java
index 3f42df08985a..4ac27e27d0b8 100644
--- a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/ConversionSourcesServiceSettings.java
+++ b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/ConversionSourcesServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ConversionSourcesServiceSettings
diff --git a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/ConversionSourcesServiceStub.java b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/ConversionSourcesServiceStub.java
index 049a4b1c748c..3daa7478da5c 100644
--- a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/ConversionSourcesServiceStub.java
+++ b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/ConversionSourcesServiceStub.java
@@ -31,6 +31,7 @@
 import com.google.shopping.merchant.conversions.v1beta.UndeleteConversionSourceRequest;
 import com.google.shopping.merchant.conversions.v1beta.UpdateConversionSourceRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ConversionSourcesServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/ConversionSourcesServiceStubSettings.java b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/ConversionSourcesServiceStubSettings.java
index 89d6eb3c2621..b25b86a1d971 100644
--- a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/ConversionSourcesServiceStubSettings.java
+++ b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/ConversionSourcesServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/GrpcConversionSourcesServiceCallableFactory.java b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/GrpcConversionSourcesServiceCallableFactory.java
index 067831f2ef25..caeab8fdfa3c 100644
--- a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/GrpcConversionSourcesServiceCallableFactory.java
+++ b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/GrpcConversionSourcesServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConversionSourcesServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/GrpcConversionSourcesServiceStub.java b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/GrpcConversionSourcesServiceStub.java
index 78f4a1a9ca2f..2981483dc2d8 100644
--- a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/GrpcConversionSourcesServiceStub.java
+++ b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/GrpcConversionSourcesServiceStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcConversionSourcesServiceStub extends ConversionSourcesServiceStub {
diff --git a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/HttpJsonConversionSourcesServiceCallableFactory.java b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/HttpJsonConversionSourcesServiceCallableFactory.java
index bfeaa3b964a6..f447bf8802c2 100644
--- a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/HttpJsonConversionSourcesServiceCallableFactory.java
+++ b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/HttpJsonConversionSourcesServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConversionSourcesServiceCallableFactory
diff --git a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/HttpJsonConversionSourcesServiceStub.java b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/HttpJsonConversionSourcesServiceStub.java
index f89382058d5d..134625cc9f26 100644
--- a/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/HttpJsonConversionSourcesServiceStub.java
+++ b/java-shopping-merchant-conversions/google-shopping-merchant-conversions/src/main/java/com/google/shopping/merchant/conversions/v1beta/stub/HttpJsonConversionSourcesServiceStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonConversionSourcesServiceStub extends ConversionSourcesServiceStub {
diff --git a/java-shopping-merchant-conversions/proto-google-shopping-merchant-conversions-v1/src/main/java/com/google/shopping/merchant/conversions/v1/AccountName.java b/java-shopping-merchant-conversions/proto-google-shopping-merchant-conversions-v1/src/main/java/com/google/shopping/merchant/conversions/v1/AccountName.java
index 101032517afe..2367bd651a94 100644
--- a/java-shopping-merchant-conversions/proto-google-shopping-merchant-conversions-v1/src/main/java/com/google/shopping/merchant/conversions/v1/AccountName.java
+++ b/java-shopping-merchant-conversions/proto-google-shopping-merchant-conversions-v1/src/main/java/com/google/shopping/merchant/conversions/v1/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-conversions/proto-google-shopping-merchant-conversions-v1/src/main/java/com/google/shopping/merchant/conversions/v1/ConversionSourceName.java b/java-shopping-merchant-conversions/proto-google-shopping-merchant-conversions-v1/src/main/java/com/google/shopping/merchant/conversions/v1/ConversionSourceName.java
index 45e6bae9fad8..3213046cefcd 100644
--- a/java-shopping-merchant-conversions/proto-google-shopping-merchant-conversions-v1/src/main/java/com/google/shopping/merchant/conversions/v1/ConversionSourceName.java
+++ b/java-shopping-merchant-conversions/proto-google-shopping-merchant-conversions-v1/src/main/java/com/google/shopping/merchant/conversions/v1/ConversionSourceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversionSourceName implements ResourceName {
   private static final PathTemplate ACCOUNT_CONVERSION_SOURCE =
diff --git a/java-shopping-merchant-conversions/proto-google-shopping-merchant-conversions-v1beta/src/main/java/com/google/shopping/merchant/conversions/v1beta/AccountName.java b/java-shopping-merchant-conversions/proto-google-shopping-merchant-conversions-v1beta/src/main/java/com/google/shopping/merchant/conversions/v1beta/AccountName.java
index 44d408c98765..54c75feb76e0 100644
--- a/java-shopping-merchant-conversions/proto-google-shopping-merchant-conversions-v1beta/src/main/java/com/google/shopping/merchant/conversions/v1beta/AccountName.java
+++ b/java-shopping-merchant-conversions/proto-google-shopping-merchant-conversions-v1beta/src/main/java/com/google/shopping/merchant/conversions/v1beta/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-conversions/proto-google-shopping-merchant-conversions-v1beta/src/main/java/com/google/shopping/merchant/conversions/v1beta/ConversionSourceName.java b/java-shopping-merchant-conversions/proto-google-shopping-merchant-conversions-v1beta/src/main/java/com/google/shopping/merchant/conversions/v1beta/ConversionSourceName.java
index 3063d292f312..9386bb917392 100644
--- a/java-shopping-merchant-conversions/proto-google-shopping-merchant-conversions-v1beta/src/main/java/com/google/shopping/merchant/conversions/v1beta/ConversionSourceName.java
+++ b/java-shopping-merchant-conversions/proto-google-shopping-merchant-conversions-v1beta/src/main/java/com/google/shopping/merchant/conversions/v1beta/ConversionSourceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConversionSourceName implements ResourceName {
   private static final PathTemplate ACCOUNT_CONVERSION_SOURCE =
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/DataSourcesServiceClient.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/DataSourcesServiceClient.java
index afeb67293945..04ef9e0e3eb7 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/DataSourcesServiceClient.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/DataSourcesServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -233,6 +234,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataSourcesServiceClient implements BackgroundResource {
   private final DataSourcesServiceSettings settings;
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/DataSourcesServiceSettings.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/DataSourcesServiceSettings.java
index 3f5fdf4c6786..4ec38c1a739d 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/DataSourcesServiceSettings.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/DataSourcesServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataSourcesServiceSettings extends ClientSettings<DataSourcesServiceSettings> {
 
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/FileUploadsServiceClient.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/FileUploadsServiceClient.java
index 230e94cac828..3fa795078005 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/FileUploadsServiceClient.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/FileUploadsServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FileUploadsServiceClient implements BackgroundResource {
   private final FileUploadsServiceSettings settings;
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/FileUploadsServiceSettings.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/FileUploadsServiceSettings.java
index b1dba910ba70..fe53e17ee2a1 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/FileUploadsServiceSettings.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/FileUploadsServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FileUploadsServiceSettings extends ClientSettings<FileUploadsServiceSettings> {
 
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/DataSourcesServiceStub.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/DataSourcesServiceStub.java
index c07c9cbcd44c..29898838fce8 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/DataSourcesServiceStub.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/DataSourcesServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.shopping.merchant.datasources.v1.ListDataSourcesResponse;
 import com.google.shopping.merchant.datasources.v1.UpdateDataSourceRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataSourcesServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/DataSourcesServiceStubSettings.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/DataSourcesServiceStubSettings.java
index 7e8ff4fd6ceb..45c5a05c926c 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/DataSourcesServiceStubSettings.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/DataSourcesServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataSourcesServiceStubSettings extends StubSettings<DataSourcesServiceStubSettings> {
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/FileUploadsServiceStub.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/FileUploadsServiceStub.java
index 92cf931c1596..708fbc918bcf 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/FileUploadsServiceStub.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/FileUploadsServiceStub.java
@@ -21,6 +21,7 @@
 import com.google.shopping.merchant.datasources.v1.FileUpload;
 import com.google.shopping.merchant.datasources.v1.GetFileUploadRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class FileUploadsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/FileUploadsServiceStubSettings.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/FileUploadsServiceStubSettings.java
index 6faea73894b8..62f6a003b1d5 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/FileUploadsServiceStubSettings.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/FileUploadsServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class FileUploadsServiceStubSettings extends StubSettings<FileUploadsServiceStubSettings> {
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/GrpcDataSourcesServiceCallableFactory.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/GrpcDataSourcesServiceCallableFactory.java
index 7c31aa2b8ac5..9ae1e6d71144 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/GrpcDataSourcesServiceCallableFactory.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/GrpcDataSourcesServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataSourcesServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/GrpcDataSourcesServiceStub.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/GrpcDataSourcesServiceStub.java
index 513d406d646f..ff0b476f48a8 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/GrpcDataSourcesServiceStub.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/GrpcDataSourcesServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataSourcesServiceStub extends DataSourcesServiceStub {
   private static final MethodDescriptor<GetDataSourceRequest, DataSource>
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/GrpcFileUploadsServiceCallableFactory.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/GrpcFileUploadsServiceCallableFactory.java
index bc7deae278bc..2adb5729b680 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/GrpcFileUploadsServiceCallableFactory.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/GrpcFileUploadsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFileUploadsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/GrpcFileUploadsServiceStub.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/GrpcFileUploadsServiceStub.java
index 71d07602ba92..e3cfde600d3e 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/GrpcFileUploadsServiceStub.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/GrpcFileUploadsServiceStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcFileUploadsServiceStub extends FileUploadsServiceStub {
   private static final MethodDescriptor<GetFileUploadRequest, FileUpload>
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/HttpJsonDataSourcesServiceCallableFactory.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/HttpJsonDataSourcesServiceCallableFactory.java
index f70de7002bb3..a752d3334390 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/HttpJsonDataSourcesServiceCallableFactory.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/HttpJsonDataSourcesServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataSourcesServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/HttpJsonDataSourcesServiceStub.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/HttpJsonDataSourcesServiceStub.java
index c125bc9de2ac..09b52baa90c1 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/HttpJsonDataSourcesServiceStub.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/HttpJsonDataSourcesServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataSourcesServiceStub extends DataSourcesServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/HttpJsonFileUploadsServiceCallableFactory.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/HttpJsonFileUploadsServiceCallableFactory.java
index 00ce2103e3cb..52906338936a 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/HttpJsonFileUploadsServiceCallableFactory.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/HttpJsonFileUploadsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFileUploadsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/HttpJsonFileUploadsServiceStub.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/HttpJsonFileUploadsServiceStub.java
index 7dd5bf22778e..553190181f51 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/HttpJsonFileUploadsServiceStub.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1/stub/HttpJsonFileUploadsServiceStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonFileUploadsServiceStub extends FileUploadsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/DataSourcesServiceClient.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/DataSourcesServiceClient.java
index 037df7701d05..e6e970c8d836 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/DataSourcesServiceClient.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/DataSourcesServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -234,6 +235,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataSourcesServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/DataSourcesServiceSettings.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/DataSourcesServiceSettings.java
index 4f8d26eceebf..89aa2d4da861 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/DataSourcesServiceSettings.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/DataSourcesServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataSourcesServiceSettings extends ClientSettings<DataSourcesServiceSettings> {
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/FileUploadsServiceClient.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/FileUploadsServiceClient.java
index d702ab6bc953..149fc9b94a2e 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/FileUploadsServiceClient.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/FileUploadsServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FileUploadsServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/FileUploadsServiceSettings.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/FileUploadsServiceSettings.java
index 2a0b75d24e06..cc02df26a22c 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/FileUploadsServiceSettings.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/FileUploadsServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class FileUploadsServiceSettings extends ClientSettings<FileUploadsServiceSettings> {
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/DataSourcesServiceStub.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/DataSourcesServiceStub.java
index 34dc344376bd..135d6f406e41 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/DataSourcesServiceStub.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/DataSourcesServiceStub.java
@@ -31,6 +31,7 @@
 import com.google.shopping.merchant.datasources.v1beta.ListDataSourcesResponse;
 import com.google.shopping.merchant.datasources.v1beta.UpdateDataSourceRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DataSourcesServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/DataSourcesServiceStubSettings.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/DataSourcesServiceStubSettings.java
index cd427b65d39b..e6027b6f86a9 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/DataSourcesServiceStubSettings.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/DataSourcesServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/FileUploadsServiceStub.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/FileUploadsServiceStub.java
index 8d6df2b31bdc..e57574f9f0c4 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/FileUploadsServiceStub.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/FileUploadsServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.shopping.merchant.datasources.v1beta.FileUpload;
 import com.google.shopping.merchant.datasources.v1beta.GetFileUploadRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class FileUploadsServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/FileUploadsServiceStubSettings.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/FileUploadsServiceStubSettings.java
index a706a082f4d2..4fadd1756bcd 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/FileUploadsServiceStubSettings.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/FileUploadsServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/GrpcDataSourcesServiceCallableFactory.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/GrpcDataSourcesServiceCallableFactory.java
index 49de2fa60bc0..945f993ea987 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/GrpcDataSourcesServiceCallableFactory.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/GrpcDataSourcesServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataSourcesServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/GrpcDataSourcesServiceStub.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/GrpcDataSourcesServiceStub.java
index 7c00b516de77..08a9964ea235 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/GrpcDataSourcesServiceStub.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/GrpcDataSourcesServiceStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataSourcesServiceStub extends DataSourcesServiceStub {
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/GrpcFileUploadsServiceCallableFactory.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/GrpcFileUploadsServiceCallableFactory.java
index d9c022cd5111..51e106ca7950 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/GrpcFileUploadsServiceCallableFactory.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/GrpcFileUploadsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFileUploadsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/GrpcFileUploadsServiceStub.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/GrpcFileUploadsServiceStub.java
index a085d3e272b1..16c74c51f2c3 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/GrpcFileUploadsServiceStub.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/GrpcFileUploadsServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcFileUploadsServiceStub extends FileUploadsServiceStub {
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/HttpJsonDataSourcesServiceCallableFactory.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/HttpJsonDataSourcesServiceCallableFactory.java
index ad047fd9fa3b..0e1d728c0e77 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/HttpJsonDataSourcesServiceCallableFactory.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/HttpJsonDataSourcesServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataSourcesServiceCallableFactory
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/HttpJsonDataSourcesServiceStub.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/HttpJsonDataSourcesServiceStub.java
index b9cf4a1ae9c4..593b7a166e68 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/HttpJsonDataSourcesServiceStub.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/HttpJsonDataSourcesServiceStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataSourcesServiceStub extends DataSourcesServiceStub {
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/HttpJsonFileUploadsServiceCallableFactory.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/HttpJsonFileUploadsServiceCallableFactory.java
index ca93264effc8..56380f3d4464 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/HttpJsonFileUploadsServiceCallableFactory.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/HttpJsonFileUploadsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonFileUploadsServiceCallableFactory
diff --git a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/HttpJsonFileUploadsServiceStub.java b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/HttpJsonFileUploadsServiceStub.java
index cff53bf30436..16ad9fc48df3 100644
--- a/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/HttpJsonFileUploadsServiceStub.java
+++ b/java-shopping-merchant-datasources/google-shopping-merchant-datasources/src/main/java/com/google/shopping/merchant/datasources/v1beta/stub/HttpJsonFileUploadsServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonFileUploadsServiceStub extends FileUploadsServiceStub {
diff --git a/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1/src/main/java/com/google/shopping/merchant/datasources/v1/AccountName.java b/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1/src/main/java/com/google/shopping/merchant/datasources/v1/AccountName.java
index 9dde60f501dc..63ef6b3511b7 100644
--- a/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1/src/main/java/com/google/shopping/merchant/datasources/v1/AccountName.java
+++ b/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1/src/main/java/com/google/shopping/merchant/datasources/v1/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1/src/main/java/com/google/shopping/merchant/datasources/v1/DataSourceName.java b/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1/src/main/java/com/google/shopping/merchant/datasources/v1/DataSourceName.java
index 223b03db33fe..9df7e8b1fa10 100644
--- a/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1/src/main/java/com/google/shopping/merchant/datasources/v1/DataSourceName.java
+++ b/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1/src/main/java/com/google/shopping/merchant/datasources/v1/DataSourceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataSourceName implements ResourceName {
   private static final PathTemplate ACCOUNT_DATASOURCE =
diff --git a/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1/src/main/java/com/google/shopping/merchant/datasources/v1/FileUploadName.java b/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1/src/main/java/com/google/shopping/merchant/datasources/v1/FileUploadName.java
index 5606816da656..ba0bce366ba6 100644
--- a/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1/src/main/java/com/google/shopping/merchant/datasources/v1/FileUploadName.java
+++ b/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1/src/main/java/com/google/shopping/merchant/datasources/v1/FileUploadName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FileUploadName implements ResourceName {
   private static final PathTemplate ACCOUNT_DATASOURCE_FILEUPLOAD =
diff --git a/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1beta/src/main/java/com/google/shopping/merchant/datasources/v1beta/AccountName.java b/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1beta/src/main/java/com/google/shopping/merchant/datasources/v1beta/AccountName.java
index b994b6981cd2..441a99d0ea19 100644
--- a/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1beta/src/main/java/com/google/shopping/merchant/datasources/v1beta/AccountName.java
+++ b/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1beta/src/main/java/com/google/shopping/merchant/datasources/v1beta/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1beta/src/main/java/com/google/shopping/merchant/datasources/v1beta/DataSourceName.java b/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1beta/src/main/java/com/google/shopping/merchant/datasources/v1beta/DataSourceName.java
index fe3a12a0302a..9c86a4850e1b 100644
--- a/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1beta/src/main/java/com/google/shopping/merchant/datasources/v1beta/DataSourceName.java
+++ b/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1beta/src/main/java/com/google/shopping/merchant/datasources/v1beta/DataSourceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataSourceName implements ResourceName {
   private static final PathTemplate ACCOUNT_DATASOURCE =
diff --git a/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1beta/src/main/java/com/google/shopping/merchant/datasources/v1beta/FileUploadName.java b/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1beta/src/main/java/com/google/shopping/merchant/datasources/v1beta/FileUploadName.java
index 546fa88883e7..4de4461f7f9f 100644
--- a/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1beta/src/main/java/com/google/shopping/merchant/datasources/v1beta/FileUploadName.java
+++ b/java-shopping-merchant-datasources/proto-google-shopping-merchant-datasources-v1beta/src/main/java/com/google/shopping/merchant/datasources/v1beta/FileUploadName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FileUploadName implements ResourceName {
   private static final PathTemplate ACCOUNT_DATASOURCE_FILEUPLOAD =
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/LocalInventoryServiceClient.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/LocalInventoryServiceClient.java
index 0aa25d439eef..47bce6400ace 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/LocalInventoryServiceClient.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/LocalInventoryServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -182,6 +183,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocalInventoryServiceClient implements BackgroundResource {
   private final LocalInventoryServiceSettings settings;
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/LocalInventoryServiceSettings.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/LocalInventoryServiceSettings.java
index cd9553221ce4..0b68c0bb7dc0 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/LocalInventoryServiceSettings.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/LocalInventoryServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocalInventoryServiceSettings extends ClientSettings<LocalInventoryServiceSettings> {
 
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/RegionalInventoryServiceClient.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/RegionalInventoryServiceClient.java
index f8e29838c14b..01ff7bd6b097 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/RegionalInventoryServiceClient.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/RegionalInventoryServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -183,6 +184,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionalInventoryServiceClient implements BackgroundResource {
   private final RegionalInventoryServiceSettings settings;
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/RegionalInventoryServiceSettings.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/RegionalInventoryServiceSettings.java
index 81785e115dcf..eca6aef2e048 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/RegionalInventoryServiceSettings.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/RegionalInventoryServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionalInventoryServiceSettings
     extends ClientSettings<RegionalInventoryServiceSettings> {
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/GrpcLocalInventoryServiceCallableFactory.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/GrpcLocalInventoryServiceCallableFactory.java
index d4ca492dfe87..1a79ff245a64 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/GrpcLocalInventoryServiceCallableFactory.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/GrpcLocalInventoryServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLocalInventoryServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/GrpcLocalInventoryServiceStub.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/GrpcLocalInventoryServiceStub.java
index 48c6f0eb31ee..e12154b91a42 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/GrpcLocalInventoryServiceStub.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/GrpcLocalInventoryServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLocalInventoryServiceStub extends LocalInventoryServiceStub {
   private static final MethodDescriptor<ListLocalInventoriesRequest, ListLocalInventoriesResponse>
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/GrpcRegionalInventoryServiceCallableFactory.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/GrpcRegionalInventoryServiceCallableFactory.java
index 91e507dda8ec..c008599e0368 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/GrpcRegionalInventoryServiceCallableFactory.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/GrpcRegionalInventoryServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRegionalInventoryServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/GrpcRegionalInventoryServiceStub.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/GrpcRegionalInventoryServiceStub.java
index 0c74376b5dcb..ec003b511cfa 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/GrpcRegionalInventoryServiceStub.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/GrpcRegionalInventoryServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcRegionalInventoryServiceStub extends RegionalInventoryServiceStub {
   private static final MethodDescriptor<
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/HttpJsonLocalInventoryServiceCallableFactory.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/HttpJsonLocalInventoryServiceCallableFactory.java
index 9625aa21497e..dcfbcb816eda 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/HttpJsonLocalInventoryServiceCallableFactory.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/HttpJsonLocalInventoryServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLocalInventoryServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/HttpJsonLocalInventoryServiceStub.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/HttpJsonLocalInventoryServiceStub.java
index 767959b853cf..1750ae200e37 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/HttpJsonLocalInventoryServiceStub.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/HttpJsonLocalInventoryServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLocalInventoryServiceStub extends LocalInventoryServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/HttpJsonRegionalInventoryServiceCallableFactory.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/HttpJsonRegionalInventoryServiceCallableFactory.java
index 873bd293af36..f164af29ac9d 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/HttpJsonRegionalInventoryServiceCallableFactory.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/HttpJsonRegionalInventoryServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionalInventoryServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/HttpJsonRegionalInventoryServiceStub.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/HttpJsonRegionalInventoryServiceStub.java
index 09bb4ed1416b..5c3d606c2e61 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/HttpJsonRegionalInventoryServiceStub.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/HttpJsonRegionalInventoryServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionalInventoryServiceStub extends RegionalInventoryServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/LocalInventoryServiceStub.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/LocalInventoryServiceStub.java
index a603971280dd..63f3d82e3826 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/LocalInventoryServiceStub.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/LocalInventoryServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.shopping.merchant.inventories.v1.ListLocalInventoriesResponse;
 import com.google.shopping.merchant.inventories.v1.LocalInventory;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LocalInventoryServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/LocalInventoryServiceStubSettings.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/LocalInventoryServiceStubSettings.java
index ed4e84751628..604d8608f817 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/LocalInventoryServiceStubSettings.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/LocalInventoryServiceStubSettings.java
@@ -59,6 +59,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LocalInventoryServiceStubSettings
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/RegionalInventoryServiceStub.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/RegionalInventoryServiceStub.java
index 8a6943a5c79a..6b81facaafd1 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/RegionalInventoryServiceStub.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/RegionalInventoryServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.shopping.merchant.inventories.v1.ListRegionalInventoriesResponse;
 import com.google.shopping.merchant.inventories.v1.RegionalInventory;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class RegionalInventoryServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/RegionalInventoryServiceStubSettings.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/RegionalInventoryServiceStubSettings.java
index 61cbd344a4d2..481b4ce557fd 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/RegionalInventoryServiceStubSettings.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1/stub/RegionalInventoryServiceStubSettings.java
@@ -59,6 +59,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class RegionalInventoryServiceStubSettings
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/LocalInventoryServiceClient.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/LocalInventoryServiceClient.java
index 3adfcf2690f9..5d66f3c99fd3 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/LocalInventoryServiceClient.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/LocalInventoryServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -183,6 +184,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LocalInventoryServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/LocalInventoryServiceSettings.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/LocalInventoryServiceSettings.java
index 986d049abcf1..dee0aa58ddca 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/LocalInventoryServiceSettings.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/LocalInventoryServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LocalInventoryServiceSettings extends ClientSettings<LocalInventoryServiceSettings> {
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/RegionalInventoryServiceClient.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/RegionalInventoryServiceClient.java
index b848cd57ddf7..b1dc15e0d920 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/RegionalInventoryServiceClient.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/RegionalInventoryServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -184,6 +185,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class RegionalInventoryServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/RegionalInventoryServiceSettings.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/RegionalInventoryServiceSettings.java
index d3783c7acda6..eeb3cab1966d 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/RegionalInventoryServiceSettings.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/RegionalInventoryServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class RegionalInventoryServiceSettings
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/GrpcLocalInventoryServiceCallableFactory.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/GrpcLocalInventoryServiceCallableFactory.java
index 8a627ac4269a..f235ae1c1e83 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/GrpcLocalInventoryServiceCallableFactory.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/GrpcLocalInventoryServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLocalInventoryServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/GrpcLocalInventoryServiceStub.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/GrpcLocalInventoryServiceStub.java
index 7e249dd7f0a3..1cb4aa3c94ae 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/GrpcLocalInventoryServiceStub.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/GrpcLocalInventoryServiceStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLocalInventoryServiceStub extends LocalInventoryServiceStub {
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/GrpcRegionalInventoryServiceCallableFactory.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/GrpcRegionalInventoryServiceCallableFactory.java
index 9bde208b7096..179cfca8352e 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/GrpcRegionalInventoryServiceCallableFactory.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/GrpcRegionalInventoryServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcRegionalInventoryServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/GrpcRegionalInventoryServiceStub.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/GrpcRegionalInventoryServiceStub.java
index 291d59c4c203..4b1279de7ac6 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/GrpcRegionalInventoryServiceStub.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/GrpcRegionalInventoryServiceStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcRegionalInventoryServiceStub extends RegionalInventoryServiceStub {
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/HttpJsonLocalInventoryServiceCallableFactory.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/HttpJsonLocalInventoryServiceCallableFactory.java
index a999fe112371..a69a094dff99 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/HttpJsonLocalInventoryServiceCallableFactory.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/HttpJsonLocalInventoryServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonLocalInventoryServiceCallableFactory
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/HttpJsonLocalInventoryServiceStub.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/HttpJsonLocalInventoryServiceStub.java
index ffe4be96501d..33f744377a2d 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/HttpJsonLocalInventoryServiceStub.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/HttpJsonLocalInventoryServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonLocalInventoryServiceStub extends LocalInventoryServiceStub {
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/HttpJsonRegionalInventoryServiceCallableFactory.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/HttpJsonRegionalInventoryServiceCallableFactory.java
index 2f4786671be2..303b3dfcff68 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/HttpJsonRegionalInventoryServiceCallableFactory.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/HttpJsonRegionalInventoryServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionalInventoryServiceCallableFactory
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/HttpJsonRegionalInventoryServiceStub.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/HttpJsonRegionalInventoryServiceStub.java
index cf5357d39188..943ab377a000 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/HttpJsonRegionalInventoryServiceStub.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/HttpJsonRegionalInventoryServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonRegionalInventoryServiceStub extends RegionalInventoryServiceStub {
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/LocalInventoryServiceStub.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/LocalInventoryServiceStub.java
index a1348b3174e3..dfacff96419a 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/LocalInventoryServiceStub.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/LocalInventoryServiceStub.java
@@ -28,6 +28,7 @@
 import com.google.shopping.merchant.inventories.v1beta.ListLocalInventoriesResponse;
 import com.google.shopping.merchant.inventories.v1beta.LocalInventory;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class LocalInventoryServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/LocalInventoryServiceStubSettings.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/LocalInventoryServiceStubSettings.java
index 1cfe718c6c11..7c9910bcee40 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/LocalInventoryServiceStubSettings.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/LocalInventoryServiceStubSettings.java
@@ -59,6 +59,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/RegionalInventoryServiceStub.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/RegionalInventoryServiceStub.java
index 38197f656c68..6c56472bf7e5 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/RegionalInventoryServiceStub.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/RegionalInventoryServiceStub.java
@@ -28,6 +28,7 @@
 import com.google.shopping.merchant.inventories.v1beta.ListRegionalInventoriesResponse;
 import com.google.shopping.merchant.inventories.v1beta.RegionalInventory;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class RegionalInventoryServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/RegionalInventoryServiceStubSettings.java b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/RegionalInventoryServiceStubSettings.java
index 99cd3ce6b669..3989354ae6ec 100644
--- a/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/RegionalInventoryServiceStubSettings.java
+++ b/java-shopping-merchant-inventories/google-shopping-merchant-inventories/src/main/java/com/google/shopping/merchant/inventories/v1beta/stub/RegionalInventoryServiceStubSettings.java
@@ -59,6 +59,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1/src/main/java/com/google/shopping/merchant/inventories/v1/LocalInventoryName.java b/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1/src/main/java/com/google/shopping/merchant/inventories/v1/LocalInventoryName.java
index 504eabffe7f0..378bd2a6ceba 100644
--- a/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1/src/main/java/com/google/shopping/merchant/inventories/v1/LocalInventoryName.java
+++ b/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1/src/main/java/com/google/shopping/merchant/inventories/v1/LocalInventoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocalInventoryName implements ResourceName {
   private static final PathTemplate ACCOUNT_PRODUCT_STORE_CODE =
diff --git a/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1/src/main/java/com/google/shopping/merchant/inventories/v1/ProductName.java b/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1/src/main/java/com/google/shopping/merchant/inventories/v1/ProductName.java
index bad79a4de41e..625bccf53113 100644
--- a/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1/src/main/java/com/google/shopping/merchant/inventories/v1/ProductName.java
+++ b/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1/src/main/java/com/google/shopping/merchant/inventories/v1/ProductName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductName implements ResourceName {
   private static final PathTemplate ACCOUNT_PRODUCT =
diff --git a/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1/src/main/java/com/google/shopping/merchant/inventories/v1/RegionalInventoryName.java b/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1/src/main/java/com/google/shopping/merchant/inventories/v1/RegionalInventoryName.java
index 1e69bb3010f1..c213e0c1c298 100644
--- a/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1/src/main/java/com/google/shopping/merchant/inventories/v1/RegionalInventoryName.java
+++ b/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1/src/main/java/com/google/shopping/merchant/inventories/v1/RegionalInventoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionalInventoryName implements ResourceName {
   private static final PathTemplate ACCOUNT_PRODUCT_REGION =
diff --git a/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1beta/src/main/java/com/google/shopping/merchant/inventories/v1beta/LocalInventoryName.java b/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1beta/src/main/java/com/google/shopping/merchant/inventories/v1beta/LocalInventoryName.java
index 5d4a570902e1..ab42de557a74 100644
--- a/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1beta/src/main/java/com/google/shopping/merchant/inventories/v1beta/LocalInventoryName.java
+++ b/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1beta/src/main/java/com/google/shopping/merchant/inventories/v1beta/LocalInventoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocalInventoryName implements ResourceName {
   private static final PathTemplate ACCOUNT_PRODUCT_STORE_CODE =
diff --git a/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1beta/src/main/java/com/google/shopping/merchant/inventories/v1beta/ProductName.java b/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1beta/src/main/java/com/google/shopping/merchant/inventories/v1beta/ProductName.java
index 268a286c8b59..dd9b16ab5f82 100644
--- a/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1beta/src/main/java/com/google/shopping/merchant/inventories/v1beta/ProductName.java
+++ b/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1beta/src/main/java/com/google/shopping/merchant/inventories/v1beta/ProductName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductName implements ResourceName {
   private static final PathTemplate ACCOUNT_PRODUCT =
diff --git a/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1beta/src/main/java/com/google/shopping/merchant/inventories/v1beta/RegionalInventoryName.java b/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1beta/src/main/java/com/google/shopping/merchant/inventories/v1beta/RegionalInventoryName.java
index aed50bd40e9d..29569d196c5c 100644
--- a/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1beta/src/main/java/com/google/shopping/merchant/inventories/v1beta/RegionalInventoryName.java
+++ b/java-shopping-merchant-inventories/proto-google-shopping-merchant-inventories-v1beta/src/main/java/com/google/shopping/merchant/inventories/v1beta/RegionalInventoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RegionalInventoryName implements ResourceName {
   private static final PathTemplate ACCOUNT_PRODUCT_REGION =
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpInventoryServiceClient.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpInventoryServiceClient.java
index a1c42da23603..322e7d3c005b 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpInventoryServiceClient.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpInventoryServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LfpInventoryServiceClient implements BackgroundResource {
   private final LfpInventoryServiceSettings settings;
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpInventoryServiceSettings.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpInventoryServiceSettings.java
index ba3f38f8833b..de9dd5a95083 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpInventoryServiceSettings.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpInventoryServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LfpInventoryServiceSettings extends ClientSettings<LfpInventoryServiceSettings> {
 
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpMerchantStateServiceClient.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpMerchantStateServiceClient.java
index af33e9dda527..955bd1c87d0b 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpMerchantStateServiceClient.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpMerchantStateServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -136,6 +137,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LfpMerchantStateServiceClient implements BackgroundResource {
   private final LfpMerchantStateServiceSettings settings;
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpMerchantStateServiceSettings.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpMerchantStateServiceSettings.java
index e4f20b2f8eed..890f38adbe5e 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpMerchantStateServiceSettings.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpMerchantStateServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LfpMerchantStateServiceSettings
     extends ClientSettings<LfpMerchantStateServiceSettings> {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpSaleServiceClient.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpSaleServiceClient.java
index 00f74ae81537..0880c1ff2806 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpSaleServiceClient.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpSaleServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -128,6 +129,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LfpSaleServiceClient implements BackgroundResource {
   private final LfpSaleServiceSettings settings;
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpSaleServiceSettings.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpSaleServiceSettings.java
index cb682e40f7f9..8921e6cf89d3 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpSaleServiceSettings.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpSaleServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LfpSaleServiceSettings extends ClientSettings<LfpSaleServiceSettings> {
 
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpStoreServiceClient.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpStoreServiceClient.java
index 2cf28b316981..a73f89ed996d 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpStoreServiceClient.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpStoreServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -200,6 +201,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LfpStoreServiceClient implements BackgroundResource {
   private final LfpStoreServiceSettings settings;
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpStoreServiceSettings.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpStoreServiceSettings.java
index cb8efda1d030..3fb7cc9b269e 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpStoreServiceSettings.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/LfpStoreServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LfpStoreServiceSettings extends ClientSettings<LfpStoreServiceSettings> {
 
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpInventoryServiceCallableFactory.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpInventoryServiceCallableFactory.java
index ac8ec4a1ed55..28edcf98bf2f 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpInventoryServiceCallableFactory.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpInventoryServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLfpInventoryServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpInventoryServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpInventoryServiceStub.java
index 8dfc335780f1..0530c12c38af 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpInventoryServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpInventoryServiceStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLfpInventoryServiceStub extends LfpInventoryServiceStub {
   private static final MethodDescriptor<InsertLfpInventoryRequest, LfpInventory>
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpMerchantStateServiceCallableFactory.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpMerchantStateServiceCallableFactory.java
index 9fc5ac80ab29..c88545a51418 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpMerchantStateServiceCallableFactory.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpMerchantStateServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLfpMerchantStateServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpMerchantStateServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpMerchantStateServiceStub.java
index 7cfe951ad81e..4b127c8cdce1 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpMerchantStateServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpMerchantStateServiceStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLfpMerchantStateServiceStub extends LfpMerchantStateServiceStub {
   private static final MethodDescriptor<GetLfpMerchantStateRequest, LfpMerchantState>
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpSaleServiceCallableFactory.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpSaleServiceCallableFactory.java
index 99eeeb600a77..ec1874bb9175 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpSaleServiceCallableFactory.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpSaleServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLfpSaleServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpSaleServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpSaleServiceStub.java
index 325a67226046..ae559f1dcb78 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpSaleServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpSaleServiceStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLfpSaleServiceStub extends LfpSaleServiceStub {
   private static final MethodDescriptor<InsertLfpSaleRequest, LfpSale>
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpStoreServiceCallableFactory.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpStoreServiceCallableFactory.java
index 3221dc444960..3173e78a1edc 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpStoreServiceCallableFactory.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpStoreServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLfpStoreServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpStoreServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpStoreServiceStub.java
index c3fee41ae993..a335bc6a87e1 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpStoreServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/GrpcLfpStoreServiceStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLfpStoreServiceStub extends LfpStoreServiceStub {
   private static final MethodDescriptor<GetLfpStoreRequest, LfpStore> getLfpStoreMethodDescriptor =
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpInventoryServiceCallableFactory.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpInventoryServiceCallableFactory.java
index 71cda333fd57..639b1603d867 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpInventoryServiceCallableFactory.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpInventoryServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpInventoryServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpInventoryServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpInventoryServiceStub.java
index a2ee95729e13..5a01d68817ad 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpInventoryServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpInventoryServiceStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpInventoryServiceStub extends LfpInventoryServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpMerchantStateServiceCallableFactory.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpMerchantStateServiceCallableFactory.java
index 71523a8c28c3..14babf87fed9 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpMerchantStateServiceCallableFactory.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpMerchantStateServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpMerchantStateServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpMerchantStateServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpMerchantStateServiceStub.java
index 126d4425772c..3f351d6c8fdd 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpMerchantStateServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpMerchantStateServiceStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpMerchantStateServiceStub extends LfpMerchantStateServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpSaleServiceCallableFactory.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpSaleServiceCallableFactory.java
index 4a83c7f27e03..f5e0993335cb 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpSaleServiceCallableFactory.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpSaleServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpSaleServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpSaleServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpSaleServiceStub.java
index a002e91cec13..e2d6d25a43c6 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpSaleServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpSaleServiceStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpSaleServiceStub extends LfpSaleServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpStoreServiceCallableFactory.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpStoreServiceCallableFactory.java
index f9e135b7cea7..563e37f5b016 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpStoreServiceCallableFactory.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpStoreServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpStoreServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpStoreServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpStoreServiceStub.java
index ddf1683b3b79..9e2dc6f93520 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpStoreServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/HttpJsonLfpStoreServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpStoreServiceStub extends LfpStoreServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpInventoryServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpInventoryServiceStub.java
index 8d0795157d9c..d31e64cef36b 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpInventoryServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpInventoryServiceStub.java
@@ -21,6 +21,7 @@
 import com.google.shopping.merchant.lfp.v1.InsertLfpInventoryRequest;
 import com.google.shopping.merchant.lfp.v1.LfpInventory;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LfpInventoryServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpInventoryServiceStubSettings.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpInventoryServiceStubSettings.java
index 8afcbcbb23f4..ae19dad18fda 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpInventoryServiceStubSettings.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpInventoryServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LfpInventoryServiceStubSettings extends StubSettings<LfpInventoryServiceStubSettings> {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpMerchantStateServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpMerchantStateServiceStub.java
index 500bf38c3355..0507b504e417 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpMerchantStateServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpMerchantStateServiceStub.java
@@ -21,6 +21,7 @@
 import com.google.shopping.merchant.lfp.v1.GetLfpMerchantStateRequest;
 import com.google.shopping.merchant.lfp.v1.LfpMerchantState;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LfpMerchantStateServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpMerchantStateServiceStubSettings.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpMerchantStateServiceStubSettings.java
index 958ffbea68a7..8a6177caff70 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpMerchantStateServiceStubSettings.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpMerchantStateServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LfpMerchantStateServiceStubSettings
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpSaleServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpSaleServiceStub.java
index 13f386149c30..f15e7cf3c42b 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpSaleServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpSaleServiceStub.java
@@ -21,6 +21,7 @@
 import com.google.shopping.merchant.lfp.v1.InsertLfpSaleRequest;
 import com.google.shopping.merchant.lfp.v1.LfpSale;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LfpSaleServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpSaleServiceStubSettings.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpSaleServiceStubSettings.java
index b693dac0645a..9887dac78e53 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpSaleServiceStubSettings.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpSaleServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LfpSaleServiceStubSettings extends StubSettings<LfpSaleServiceStubSettings> {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpStoreServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpStoreServiceStub.java
index 70bb917e3127..33ad6a59ce04 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpStoreServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpStoreServiceStub.java
@@ -28,6 +28,7 @@
 import com.google.shopping.merchant.lfp.v1.ListLfpStoresRequest;
 import com.google.shopping.merchant.lfp.v1.ListLfpStoresResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LfpStoreServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpStoreServiceStubSettings.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpStoreServiceStubSettings.java
index 37b4389a22ee..a398376c3faf 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpStoreServiceStubSettings.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1/stub/LfpStoreServiceStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LfpStoreServiceStubSettings extends StubSettings<LfpStoreServiceStubSettings> {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpInventoryServiceClient.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpInventoryServiceClient.java
index 905257726b45..082216502977 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpInventoryServiceClient.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpInventoryServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -133,6 +134,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LfpInventoryServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpInventoryServiceSettings.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpInventoryServiceSettings.java
index 545deb00d62c..d77575edd810 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpInventoryServiceSettings.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpInventoryServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LfpInventoryServiceSettings extends ClientSettings<LfpInventoryServiceSettings> {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpMerchantStateServiceClient.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpMerchantStateServiceClient.java
index a4abb4d4c0c2..fef4ba853ac0 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpMerchantStateServiceClient.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpMerchantStateServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -134,6 +135,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LfpMerchantStateServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpMerchantStateServiceSettings.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpMerchantStateServiceSettings.java
index 2e6f36467fba..eb8f7518bbf2 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpMerchantStateServiceSettings.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpMerchantStateServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LfpMerchantStateServiceSettings
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpSaleServiceClient.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpSaleServiceClient.java
index c1a9b2262dac..11b1fd49342e 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpSaleServiceClient.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpSaleServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LfpSaleServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpSaleServiceSettings.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpSaleServiceSettings.java
index 1c0e22cec280..811f3bcdc7b8 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpSaleServiceSettings.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpSaleServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LfpSaleServiceSettings extends ClientSettings<LfpSaleServiceSettings> {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpStoreServiceClient.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpStoreServiceClient.java
index f8eb4752b3b8..174fdf2e1e0e 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpStoreServiceClient.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpStoreServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -201,6 +202,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LfpStoreServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpStoreServiceSettings.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpStoreServiceSettings.java
index e1bad467ff05..7c3ee638f69c 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpStoreServiceSettings.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpStoreServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class LfpStoreServiceSettings extends ClientSettings<LfpStoreServiceSettings> {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpInventoryServiceCallableFactory.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpInventoryServiceCallableFactory.java
index 0beefaa5f5d7..f123529b01b8 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpInventoryServiceCallableFactory.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpInventoryServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLfpInventoryServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpInventoryServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpInventoryServiceStub.java
index be8462457cc2..1b3eb882dd55 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpInventoryServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpInventoryServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLfpInventoryServiceStub extends LfpInventoryServiceStub {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpMerchantStateServiceCallableFactory.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpMerchantStateServiceCallableFactory.java
index 8b85adb2c560..e4216f592bf5 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpMerchantStateServiceCallableFactory.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpMerchantStateServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLfpMerchantStateServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpMerchantStateServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpMerchantStateServiceStub.java
index ece6cf8890d1..50b46e976eba 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpMerchantStateServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpMerchantStateServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLfpMerchantStateServiceStub extends LfpMerchantStateServiceStub {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpSaleServiceCallableFactory.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpSaleServiceCallableFactory.java
index f370dd81e5f0..0e8e894ea810 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpSaleServiceCallableFactory.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpSaleServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLfpSaleServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpSaleServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpSaleServiceStub.java
index 3f7e87a2035f..d3cd073c09ab 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpSaleServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpSaleServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLfpSaleServiceStub extends LfpSaleServiceStub {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpStoreServiceCallableFactory.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpStoreServiceCallableFactory.java
index c1bfc66bb503..41bad2e1df56 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpStoreServiceCallableFactory.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpStoreServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLfpStoreServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpStoreServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpStoreServiceStub.java
index a20ec6dffba9..8da0e0b2ddb4 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpStoreServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/GrpcLfpStoreServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcLfpStoreServiceStub extends LfpStoreServiceStub {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpInventoryServiceCallableFactory.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpInventoryServiceCallableFactory.java
index a7b8249e9655..5e0ab7c501df 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpInventoryServiceCallableFactory.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpInventoryServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpInventoryServiceCallableFactory
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpInventoryServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpInventoryServiceStub.java
index 2490de7daa34..76641450e7b7 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpInventoryServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpInventoryServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpInventoryServiceStub extends LfpInventoryServiceStub {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpMerchantStateServiceCallableFactory.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpMerchantStateServiceCallableFactory.java
index dcff3666d5f0..990b2ba69ac6 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpMerchantStateServiceCallableFactory.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpMerchantStateServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpMerchantStateServiceCallableFactory
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpMerchantStateServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpMerchantStateServiceStub.java
index 5e70a3321abe..ef2938dd13d0 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpMerchantStateServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpMerchantStateServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpMerchantStateServiceStub extends LfpMerchantStateServiceStub {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpSaleServiceCallableFactory.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpSaleServiceCallableFactory.java
index 1ca976184ac4..661c94f804a3 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpSaleServiceCallableFactory.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpSaleServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpSaleServiceCallableFactory
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpSaleServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpSaleServiceStub.java
index 53219f18bc40..aa0b51816dba 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpSaleServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpSaleServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpSaleServiceStub extends LfpSaleServiceStub {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpStoreServiceCallableFactory.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpStoreServiceCallableFactory.java
index 5604efd897c1..1d32e59629b6 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpStoreServiceCallableFactory.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpStoreServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpStoreServiceCallableFactory
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpStoreServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpStoreServiceStub.java
index 443688bf4ff7..ba84091196d5 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpStoreServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/HttpJsonLfpStoreServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonLfpStoreServiceStub extends LfpStoreServiceStub {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpInventoryServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpInventoryServiceStub.java
index 30a4f843b473..98220a86ec57 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpInventoryServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpInventoryServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.shopping.merchant.lfp.v1beta.InsertLfpInventoryRequest;
 import com.google.shopping.merchant.lfp.v1beta.LfpInventory;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class LfpInventoryServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpInventoryServiceStubSettings.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpInventoryServiceStubSettings.java
index 2ed990d60d7d..583fe2e6bb56 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpInventoryServiceStubSettings.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpInventoryServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpMerchantStateServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpMerchantStateServiceStub.java
index 6ea0c0eeada2..133b88387f51 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpMerchantStateServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpMerchantStateServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.shopping.merchant.lfp.v1beta.GetLfpMerchantStateRequest;
 import com.google.shopping.merchant.lfp.v1beta.LfpMerchantState;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class LfpMerchantStateServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpMerchantStateServiceStubSettings.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpMerchantStateServiceStubSettings.java
index 1f6063e210d8..70aba6e29695 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpMerchantStateServiceStubSettings.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpMerchantStateServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpSaleServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpSaleServiceStub.java
index f53e5ad0e6d4..ce54b804ede1 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpSaleServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpSaleServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.shopping.merchant.lfp.v1beta.InsertLfpSaleRequest;
 import com.google.shopping.merchant.lfp.v1beta.LfpSale;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class LfpSaleServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpSaleServiceStubSettings.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpSaleServiceStubSettings.java
index 3e8646a5618f..9e4565b9bb8d 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpSaleServiceStubSettings.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpSaleServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpStoreServiceStub.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpStoreServiceStub.java
index ba35a80b8528..375e0f02d12e 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpStoreServiceStub.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpStoreServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.shopping.merchant.lfp.v1beta.ListLfpStoresRequest;
 import com.google.shopping.merchant.lfp.v1beta.ListLfpStoresResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class LfpStoreServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpStoreServiceStubSettings.java b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpStoreServiceStubSettings.java
index b695b8f3e805..83e5ccca6718 100644
--- a/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpStoreServiceStubSettings.java
+++ b/java-shopping-merchant-lfp/google-shopping-merchant-lfp/src/main/java/com/google/shopping/merchant/lfp/v1beta/stub/LfpStoreServiceStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1/src/main/java/com/google/shopping/merchant/lfp/v1/AccountName.java b/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1/src/main/java/com/google/shopping/merchant/lfp/v1/AccountName.java
index 6db6937bc75c..1ca78e91a831 100644
--- a/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1/src/main/java/com/google/shopping/merchant/lfp/v1/AccountName.java
+++ b/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1/src/main/java/com/google/shopping/merchant/lfp/v1/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1/src/main/java/com/google/shopping/merchant/lfp/v1/LfpInventoryName.java b/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1/src/main/java/com/google/shopping/merchant/lfp/v1/LfpInventoryName.java
index c495b2f9b60c..4a008f584cd3 100644
--- a/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1/src/main/java/com/google/shopping/merchant/lfp/v1/LfpInventoryName.java
+++ b/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1/src/main/java/com/google/shopping/merchant/lfp/v1/LfpInventoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LfpInventoryName implements ResourceName {
   private static final PathTemplate ACCOUNT_TARGET_MERCHANT_STORE_CODE_OFFER =
diff --git a/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1/src/main/java/com/google/shopping/merchant/lfp/v1/LfpMerchantStateName.java b/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1/src/main/java/com/google/shopping/merchant/lfp/v1/LfpMerchantStateName.java
index a8aed18cf93b..d3d713191c69 100644
--- a/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1/src/main/java/com/google/shopping/merchant/lfp/v1/LfpMerchantStateName.java
+++ b/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1/src/main/java/com/google/shopping/merchant/lfp/v1/LfpMerchantStateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LfpMerchantStateName implements ResourceName {
   private static final PathTemplate ACCOUNT_LFP_MERCHANT_STATE =
diff --git a/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1/src/main/java/com/google/shopping/merchant/lfp/v1/LfpStoreName.java b/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1/src/main/java/com/google/shopping/merchant/lfp/v1/LfpStoreName.java
index 8455cbcf6b29..6f48cab5641b 100644
--- a/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1/src/main/java/com/google/shopping/merchant/lfp/v1/LfpStoreName.java
+++ b/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1/src/main/java/com/google/shopping/merchant/lfp/v1/LfpStoreName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LfpStoreName implements ResourceName {
   private static final PathTemplate ACCOUNT_TARGET_MERCHANT_STORE_CODE =
diff --git a/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1beta/src/main/java/com/google/shopping/merchant/lfp/v1beta/AccountName.java b/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1beta/src/main/java/com/google/shopping/merchant/lfp/v1beta/AccountName.java
index a1b2ffe59bbd..81c83cae711d 100644
--- a/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1beta/src/main/java/com/google/shopping/merchant/lfp/v1beta/AccountName.java
+++ b/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1beta/src/main/java/com/google/shopping/merchant/lfp/v1beta/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1beta/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpInventoryName.java b/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1beta/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpInventoryName.java
index a88b09fb01ab..fc051bffb21a 100644
--- a/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1beta/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpInventoryName.java
+++ b/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1beta/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpInventoryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LfpInventoryName implements ResourceName {
   private static final PathTemplate ACCOUNT_TARGET_MERCHANT_STORE_CODE_OFFER =
diff --git a/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1beta/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpMerchantStateName.java b/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1beta/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpMerchantStateName.java
index fdd1045b8b91..64658bca8d33 100644
--- a/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1beta/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpMerchantStateName.java
+++ b/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1beta/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpMerchantStateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LfpMerchantStateName implements ResourceName {
   private static final PathTemplate ACCOUNT_LFP_MERCHANT_STATE =
diff --git a/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1beta/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpStoreName.java b/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1beta/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpStoreName.java
index 479654a1cd46..b530c30d9e74 100644
--- a/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1beta/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpStoreName.java
+++ b/java-shopping-merchant-lfp/proto-google-shopping-merchant-lfp-v1beta/src/main/java/com/google/shopping/merchant/lfp/v1beta/LfpStoreName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LfpStoreName implements ResourceName {
   private static final PathTemplate ACCOUNT_TARGET_MERCHANT_STORE_CODE =
diff --git a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/NotificationsApiServiceClient.java b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/NotificationsApiServiceClient.java
index f05266637994..6b84f96c2444 100644
--- a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/NotificationsApiServiceClient.java
+++ b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/NotificationsApiServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -247,6 +248,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotificationsApiServiceClient implements BackgroundResource {
   private final NotificationsApiServiceSettings settings;
diff --git a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/NotificationsApiServiceSettings.java b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/NotificationsApiServiceSettings.java
index fc53f0d43312..99217f4df907 100644
--- a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/NotificationsApiServiceSettings.java
+++ b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/NotificationsApiServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotificationsApiServiceSettings
     extends ClientSettings<NotificationsApiServiceSettings> {
diff --git a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/GrpcNotificationsApiServiceCallableFactory.java b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/GrpcNotificationsApiServiceCallableFactory.java
index 5f1589fbfad3..030d462f62f9 100644
--- a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/GrpcNotificationsApiServiceCallableFactory.java
+++ b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/GrpcNotificationsApiServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNotificationsApiServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/GrpcNotificationsApiServiceStub.java b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/GrpcNotificationsApiServiceStub.java
index e970546f8313..5eef14dd878d 100644
--- a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/GrpcNotificationsApiServiceStub.java
+++ b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/GrpcNotificationsApiServiceStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcNotificationsApiServiceStub extends NotificationsApiServiceStub {
   private static final MethodDescriptor<
diff --git a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/HttpJsonNotificationsApiServiceCallableFactory.java b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/HttpJsonNotificationsApiServiceCallableFactory.java
index 95f200a61916..7d011390efbe 100644
--- a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/HttpJsonNotificationsApiServiceCallableFactory.java
+++ b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/HttpJsonNotificationsApiServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNotificationsApiServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/HttpJsonNotificationsApiServiceStub.java b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/HttpJsonNotificationsApiServiceStub.java
index 2c0fb9c44d06..e5b60905837b 100644
--- a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/HttpJsonNotificationsApiServiceStub.java
+++ b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/HttpJsonNotificationsApiServiceStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonNotificationsApiServiceStub extends NotificationsApiServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/NotificationsApiServiceStub.java b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/NotificationsApiServiceStub.java
index 75dcaa00d4e4..d45e4f627d79 100644
--- a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/NotificationsApiServiceStub.java
+++ b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/NotificationsApiServiceStub.java
@@ -31,6 +31,7 @@
 import com.google.shopping.merchant.notifications.v1.NotificationSubscriptionHealthMetrics;
 import com.google.shopping.merchant.notifications.v1.UpdateNotificationSubscriptionRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class NotificationsApiServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/NotificationsApiServiceStubSettings.java b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/NotificationsApiServiceStubSettings.java
index 5f85b51d6492..bca9766b0d1a 100644
--- a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/NotificationsApiServiceStubSettings.java
+++ b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1/stub/NotificationsApiServiceStubSettings.java
@@ -63,6 +63,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class NotificationsApiServiceStubSettings
diff --git a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/NotificationsApiServiceClient.java b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/NotificationsApiServiceClient.java
index 2781bdc89d89..eb3489ecbcbd 100644
--- a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/NotificationsApiServiceClient.java
+++ b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/NotificationsApiServiceClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -222,6 +223,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class NotificationsApiServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/NotificationsApiServiceSettings.java b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/NotificationsApiServiceSettings.java
index 9dad75b3074d..a877c4a28299 100644
--- a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/NotificationsApiServiceSettings.java
+++ b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/NotificationsApiServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class NotificationsApiServiceSettings
diff --git a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/GrpcNotificationsApiServiceCallableFactory.java b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/GrpcNotificationsApiServiceCallableFactory.java
index e4250de9ba81..286fecf351dc 100644
--- a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/GrpcNotificationsApiServiceCallableFactory.java
+++ b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/GrpcNotificationsApiServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcNotificationsApiServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/GrpcNotificationsApiServiceStub.java b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/GrpcNotificationsApiServiceStub.java
index 16c3ffd67356..1787c586ed56 100644
--- a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/GrpcNotificationsApiServiceStub.java
+++ b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/GrpcNotificationsApiServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcNotificationsApiServiceStub extends NotificationsApiServiceStub {
diff --git a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/HttpJsonNotificationsApiServiceCallableFactory.java b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/HttpJsonNotificationsApiServiceCallableFactory.java
index 7308263805f2..2ee994391250 100644
--- a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/HttpJsonNotificationsApiServiceCallableFactory.java
+++ b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/HttpJsonNotificationsApiServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonNotificationsApiServiceCallableFactory
diff --git a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/HttpJsonNotificationsApiServiceStub.java b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/HttpJsonNotificationsApiServiceStub.java
index 32f383123bdb..d12fe9d97c25 100644
--- a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/HttpJsonNotificationsApiServiceStub.java
+++ b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/HttpJsonNotificationsApiServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonNotificationsApiServiceStub extends NotificationsApiServiceStub {
diff --git a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/NotificationsApiServiceStub.java b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/NotificationsApiServiceStub.java
index 079edd90d69c..637e6aaa049d 100644
--- a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/NotificationsApiServiceStub.java
+++ b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/NotificationsApiServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.shopping.merchant.notifications.v1beta.NotificationSubscription;
 import com.google.shopping.merchant.notifications.v1beta.UpdateNotificationSubscriptionRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class NotificationsApiServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/NotificationsApiServiceStubSettings.java b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/NotificationsApiServiceStubSettings.java
index 8c041f60af45..452d5fbbcd81 100644
--- a/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/NotificationsApiServiceStubSettings.java
+++ b/java-shopping-merchant-notifications/google-shopping-merchant-notifications/src/main/java/com/google/shopping/merchant/notifications/v1beta/stub/NotificationsApiServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -113,6 +114,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1/src/main/java/com/google/shopping/merchant/notifications/v1/AccountName.java b/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1/src/main/java/com/google/shopping/merchant/notifications/v1/AccountName.java
index 50442bd9182c..e68d60648630 100644
--- a/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1/src/main/java/com/google/shopping/merchant/notifications/v1/AccountName.java
+++ b/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1/src/main/java/com/google/shopping/merchant/notifications/v1/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1/src/main/java/com/google/shopping/merchant/notifications/v1/NotificationSubscriptionHealthMetricsName.java b/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1/src/main/java/com/google/shopping/merchant/notifications/v1/NotificationSubscriptionHealthMetricsName.java
index b4178cd6cdfb..5f75f5772221 100644
--- a/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1/src/main/java/com/google/shopping/merchant/notifications/v1/NotificationSubscriptionHealthMetricsName.java
+++ b/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1/src/main/java/com/google/shopping/merchant/notifications/v1/NotificationSubscriptionHealthMetricsName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotificationSubscriptionHealthMetricsName implements ResourceName {
   private static final PathTemplate ACCOUNT_NOTIFICATION_SUBSCRIPTION =
diff --git a/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1/src/main/java/com/google/shopping/merchant/notifications/v1/NotificationSubscriptionName.java b/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1/src/main/java/com/google/shopping/merchant/notifications/v1/NotificationSubscriptionName.java
index 02d730894f5a..da38fec76cbe 100644
--- a/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1/src/main/java/com/google/shopping/merchant/notifications/v1/NotificationSubscriptionName.java
+++ b/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1/src/main/java/com/google/shopping/merchant/notifications/v1/NotificationSubscriptionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotificationSubscriptionName implements ResourceName {
   private static final PathTemplate ACCOUNT_NOTIFICATION_SUBSCRIPTION =
diff --git a/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1beta/src/main/java/com/google/shopping/merchant/notifications/v1beta/AccountName.java b/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1beta/src/main/java/com/google/shopping/merchant/notifications/v1beta/AccountName.java
index 0c195515a363..6870da4a5be9 100644
--- a/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1beta/src/main/java/com/google/shopping/merchant/notifications/v1beta/AccountName.java
+++ b/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1beta/src/main/java/com/google/shopping/merchant/notifications/v1beta/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1beta/src/main/java/com/google/shopping/merchant/notifications/v1beta/NotificationSubscriptionName.java b/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1beta/src/main/java/com/google/shopping/merchant/notifications/v1beta/NotificationSubscriptionName.java
index 40de4acea200..e3c673d37c18 100644
--- a/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1beta/src/main/java/com/google/shopping/merchant/notifications/v1beta/NotificationSubscriptionName.java
+++ b/java-shopping-merchant-notifications/proto-google-shopping-merchant-notifications-v1beta/src/main/java/com/google/shopping/merchant/notifications/v1beta/NotificationSubscriptionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NotificationSubscriptionName implements ResourceName {
   private static final PathTemplate ACCOUNT_NOTIFICATION_SUBSCRIPTION =
diff --git a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/ImageServiceClient.java b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/ImageServiceClient.java
index 8a5e69c43739..35752abf019d 100644
--- a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/ImageServiceClient.java
+++ b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/ImageServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -164,6 +165,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ImageServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/ImageServiceSettings.java b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/ImageServiceSettings.java
index 97f77f2f9137..eec147411a7d 100644
--- a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/ImageServiceSettings.java
+++ b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/ImageServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ImageServiceSettings extends ClientSettings<ImageServiceSettings> {
diff --git a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/TextSuggestionsServiceClient.java b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/TextSuggestionsServiceClient.java
index cf51faae9fc9..73ebe0494a26 100644
--- a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/TextSuggestionsServiceClient.java
+++ b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/TextSuggestionsServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -134,6 +135,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TextSuggestionsServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/TextSuggestionsServiceSettings.java b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/TextSuggestionsServiceSettings.java
index c57f34233bc5..073c52805c83 100644
--- a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/TextSuggestionsServiceSettings.java
+++ b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/TextSuggestionsServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TextSuggestionsServiceSettings extends ClientSettings<TextSuggestionsServiceSettings> {
diff --git a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/GrpcImageServiceCallableFactory.java b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/GrpcImageServiceCallableFactory.java
index 74ae43a1a697..d62a65e6b507 100644
--- a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/GrpcImageServiceCallableFactory.java
+++ b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/GrpcImageServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcImageServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/GrpcImageServiceStub.java b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/GrpcImageServiceStub.java
index 82a15ab18f5d..5ed6703329a4 100644
--- a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/GrpcImageServiceStub.java
+++ b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/GrpcImageServiceStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcImageServiceStub extends ImageServiceStub {
diff --git a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/GrpcTextSuggestionsServiceCallableFactory.java b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/GrpcTextSuggestionsServiceCallableFactory.java
index 653041ec3014..0068115bbbac 100644
--- a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/GrpcTextSuggestionsServiceCallableFactory.java
+++ b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/GrpcTextSuggestionsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTextSuggestionsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/GrpcTextSuggestionsServiceStub.java b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/GrpcTextSuggestionsServiceStub.java
index c6df747d901a..ee1c52438f46 100644
--- a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/GrpcTextSuggestionsServiceStub.java
+++ b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/GrpcTextSuggestionsServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTextSuggestionsServiceStub extends TextSuggestionsServiceStub {
diff --git a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/HttpJsonImageServiceCallableFactory.java b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/HttpJsonImageServiceCallableFactory.java
index cdfcc798ab63..96e1a0c0c125 100644
--- a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/HttpJsonImageServiceCallableFactory.java
+++ b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/HttpJsonImageServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonImageServiceCallableFactory
diff --git a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/HttpJsonImageServiceStub.java b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/HttpJsonImageServiceStub.java
index 1c341f398c15..a0a17a7c8163 100644
--- a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/HttpJsonImageServiceStub.java
+++ b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/HttpJsonImageServiceStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonImageServiceStub extends ImageServiceStub {
diff --git a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/HttpJsonTextSuggestionsServiceCallableFactory.java b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/HttpJsonTextSuggestionsServiceCallableFactory.java
index 5bbeccc1be0a..4be3ecacd837 100644
--- a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/HttpJsonTextSuggestionsServiceCallableFactory.java
+++ b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/HttpJsonTextSuggestionsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTextSuggestionsServiceCallableFactory
diff --git a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/HttpJsonTextSuggestionsServiceStub.java b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/HttpJsonTextSuggestionsServiceStub.java
index f11bbc096719..af6defacd917 100644
--- a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/HttpJsonTextSuggestionsServiceStub.java
+++ b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/HttpJsonTextSuggestionsServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTextSuggestionsServiceStub extends TextSuggestionsServiceStub {
diff --git a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/ImageServiceStub.java b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/ImageServiceStub.java
index 1d051a80487e..3e8780468e78 100644
--- a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/ImageServiceStub.java
+++ b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/ImageServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.shopping.merchant.productstudio.v1alpha.UpscaleProductImageRequest;
 import com.google.shopping.merchant.productstudio.v1alpha.UpscaleProductImageResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ImageServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/ImageServiceStubSettings.java b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/ImageServiceStubSettings.java
index 3e1eb6137bf4..427b1b853bf4 100644
--- a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/ImageServiceStubSettings.java
+++ b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/ImageServiceStubSettings.java
@@ -50,6 +50,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/TextSuggestionsServiceStub.java b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/TextSuggestionsServiceStub.java
index 1199e444adb8..46020b6c8d93 100644
--- a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/TextSuggestionsServiceStub.java
+++ b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/TextSuggestionsServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.shopping.merchant.productstudio.v1alpha.GenerateProductTextSuggestionsRequest;
 import com.google.shopping.merchant.productstudio.v1alpha.GenerateProductTextSuggestionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class TextSuggestionsServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/TextSuggestionsServiceStubSettings.java b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/TextSuggestionsServiceStubSettings.java
index c8cf14948606..1be880d64fe9 100644
--- a/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/TextSuggestionsServiceStubSettings.java
+++ b/java-shopping-merchant-product-studio/google-shopping-merchant-productstudio/src/main/java/com/google/shopping/merchant/productstudio/v1alpha/stub/TextSuggestionsServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/ProductInputsServiceClient.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/ProductInputsServiceClient.java
index ebdc6573672b..027cf953decb 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/ProductInputsServiceClient.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/ProductInputsServiceClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -175,6 +176,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductInputsServiceClient implements BackgroundResource {
   private final ProductInputsServiceSettings settings;
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/ProductInputsServiceSettings.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/ProductInputsServiceSettings.java
index 60641f8924e0..fee94ee1a8fc 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/ProductInputsServiceSettings.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/ProductInputsServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductInputsServiceSettings extends ClientSettings<ProductInputsServiceSettings> {
 
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/ProductsServiceClient.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/ProductsServiceClient.java
index 4ae92b0afc5e..96ec9ff5ce46 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/ProductsServiceClient.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/ProductsServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -161,6 +162,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductsServiceClient implements BackgroundResource {
   private final ProductsServiceSettings settings;
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/ProductsServiceSettings.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/ProductsServiceSettings.java
index 0b9d328678fe..417a21495753 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/ProductsServiceSettings.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/ProductsServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductsServiceSettings extends ClientSettings<ProductsServiceSettings> {
 
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/GrpcProductInputsServiceCallableFactory.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/GrpcProductInputsServiceCallableFactory.java
index 192d10aba35a..0def4c7a2eff 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/GrpcProductInputsServiceCallableFactory.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/GrpcProductInputsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcProductInputsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/GrpcProductInputsServiceStub.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/GrpcProductInputsServiceStub.java
index 980cc3d2b1ca..7d9753d87460 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/GrpcProductInputsServiceStub.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/GrpcProductInputsServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcProductInputsServiceStub extends ProductInputsServiceStub {
   private static final MethodDescriptor<InsertProductInputRequest, ProductInput>
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/GrpcProductsServiceCallableFactory.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/GrpcProductsServiceCallableFactory.java
index 4ff992a223a1..d8ea02ee3c5b 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/GrpcProductsServiceCallableFactory.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/GrpcProductsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcProductsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/GrpcProductsServiceStub.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/GrpcProductsServiceStub.java
index cea4acce2945..b4888fa3ef92 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/GrpcProductsServiceStub.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/GrpcProductsServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcProductsServiceStub extends ProductsServiceStub {
   private static final MethodDescriptor<GetProductRequest, Product> getProductMethodDescriptor =
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/HttpJsonProductInputsServiceCallableFactory.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/HttpJsonProductInputsServiceCallableFactory.java
index b27162ae88df..68770edb97eb 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/HttpJsonProductInputsServiceCallableFactory.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/HttpJsonProductInputsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProductInputsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/HttpJsonProductInputsServiceStub.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/HttpJsonProductInputsServiceStub.java
index d577d21e8406..b3ea40c83d6d 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/HttpJsonProductInputsServiceStub.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/HttpJsonProductInputsServiceStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProductInputsServiceStub extends ProductInputsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/HttpJsonProductsServiceCallableFactory.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/HttpJsonProductsServiceCallableFactory.java
index 552c062f5807..4b44b4b03a0e 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/HttpJsonProductsServiceCallableFactory.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/HttpJsonProductsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProductsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/HttpJsonProductsServiceStub.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/HttpJsonProductsServiceStub.java
index ecface1ef7d1..29e690b7e73a 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/HttpJsonProductsServiceStub.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/HttpJsonProductsServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProductsServiceStub extends ProductsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/ProductInputsServiceStub.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/ProductInputsServiceStub.java
index bcb26b6f0c9e..37de96f75c9b 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/ProductInputsServiceStub.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/ProductInputsServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.shopping.merchant.products.v1.ProductInput;
 import com.google.shopping.merchant.products.v1.UpdateProductInputRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ProductInputsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/ProductInputsServiceStubSettings.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/ProductInputsServiceStubSettings.java
index 97737bb8417b..8e76e7e43ed7 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/ProductInputsServiceStubSettings.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/ProductInputsServiceStubSettings.java
@@ -49,6 +49,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ProductInputsServiceStubSettings
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/ProductsServiceStub.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/ProductsServiceStub.java
index 7d4b4d1d6843..0a636192bb58 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/ProductsServiceStub.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/ProductsServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.shopping.merchant.products.v1.ListProductsResponse;
 import com.google.shopping.merchant.products.v1.Product;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ProductsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/ProductsServiceStubSettings.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/ProductsServiceStubSettings.java
index 9b96d7b2c91e..bbd390812a89 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/ProductsServiceStubSettings.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1/stub/ProductsServiceStubSettings.java
@@ -57,6 +57,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ProductsServiceStubSettings extends StubSettings<ProductsServiceStubSettings> {
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/ProductInputsServiceClient.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/ProductInputsServiceClient.java
index 9ad3645a31d6..140c889f0d3d 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/ProductInputsServiceClient.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/ProductInputsServiceClient.java
@@ -26,6 +26,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -177,6 +178,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProductInputsServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/ProductInputsServiceSettings.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/ProductInputsServiceSettings.java
index 2046955e39ff..26c426c3f238 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/ProductInputsServiceSettings.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/ProductInputsServiceSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProductInputsServiceSettings extends ClientSettings<ProductInputsServiceSettings> {
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/ProductsServiceClient.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/ProductsServiceClient.java
index 9156424a249c..3025b4162361 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/ProductsServiceClient.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/ProductsServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -162,6 +163,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProductsServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/ProductsServiceSettings.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/ProductsServiceSettings.java
index 413bce85a0ee..b8de93b57586 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/ProductsServiceSettings.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/ProductsServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProductsServiceSettings extends ClientSettings<ProductsServiceSettings> {
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/GrpcProductInputsServiceCallableFactory.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/GrpcProductInputsServiceCallableFactory.java
index 7c7404138263..afb18c23c325 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/GrpcProductInputsServiceCallableFactory.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/GrpcProductInputsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProductInputsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/GrpcProductInputsServiceStub.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/GrpcProductInputsServiceStub.java
index 2cff1ff6130d..4600c19e2267 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/GrpcProductInputsServiceStub.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/GrpcProductInputsServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProductInputsServiceStub extends ProductInputsServiceStub {
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/GrpcProductsServiceCallableFactory.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/GrpcProductsServiceCallableFactory.java
index 90f3081a81cb..91a260299080 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/GrpcProductsServiceCallableFactory.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/GrpcProductsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProductsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/GrpcProductsServiceStub.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/GrpcProductsServiceStub.java
index c5b212c169d8..60ef56ccb975 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/GrpcProductsServiceStub.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/GrpcProductsServiceStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProductsServiceStub extends ProductsServiceStub {
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/HttpJsonProductInputsServiceCallableFactory.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/HttpJsonProductInputsServiceCallableFactory.java
index 50f04a4e0803..e05ee8d49949 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/HttpJsonProductInputsServiceCallableFactory.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/HttpJsonProductInputsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProductInputsServiceCallableFactory
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/HttpJsonProductInputsServiceStub.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/HttpJsonProductInputsServiceStub.java
index e2ef9373beff..bce569b124f0 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/HttpJsonProductInputsServiceStub.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/HttpJsonProductInputsServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProductInputsServiceStub extends ProductInputsServiceStub {
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/HttpJsonProductsServiceCallableFactory.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/HttpJsonProductsServiceCallableFactory.java
index 25f7302b3d83..c0efbccea9d7 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/HttpJsonProductsServiceCallableFactory.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/HttpJsonProductsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProductsServiceCallableFactory
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/HttpJsonProductsServiceStub.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/HttpJsonProductsServiceStub.java
index 3de3fcbe2138..ac33e2bcc144 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/HttpJsonProductsServiceStub.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/HttpJsonProductsServiceStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProductsServiceStub extends ProductsServiceStub {
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/ProductInputsServiceStub.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/ProductInputsServiceStub.java
index 9ff89f7199d0..e351d667ed5a 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/ProductInputsServiceStub.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/ProductInputsServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.shopping.merchant.products.v1beta.ProductInput;
 import com.google.shopping.merchant.products.v1beta.UpdateProductInputRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ProductInputsServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/ProductInputsServiceStubSettings.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/ProductInputsServiceStubSettings.java
index 0acf7e29e86a..71ae1097267b 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/ProductInputsServiceStubSettings.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/ProductInputsServiceStubSettings.java
@@ -49,6 +49,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/ProductsServiceStub.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/ProductsServiceStub.java
index fce55ef9b187..54000d91c33c 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/ProductsServiceStub.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/ProductsServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.shopping.merchant.products.v1beta.ListProductsResponse;
 import com.google.shopping.merchant.products.v1beta.Product;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ProductsServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/ProductsServiceStubSettings.java b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/ProductsServiceStubSettings.java
index 2490709ad02e..1a54b5bf1bbb 100644
--- a/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/ProductsServiceStubSettings.java
+++ b/java-shopping-merchant-products/google-shopping-merchant-products/src/main/java/com/google/shopping/merchant/products/v1beta/stub/ProductsServiceStubSettings.java
@@ -57,6 +57,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -108,6 +109,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1/src/main/java/com/google/shopping/merchant/products/v1/AccountName.java b/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1/src/main/java/com/google/shopping/merchant/products/v1/AccountName.java
index dc4a29773077..28b579b69f19 100644
--- a/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1/src/main/java/com/google/shopping/merchant/products/v1/AccountName.java
+++ b/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1/src/main/java/com/google/shopping/merchant/products/v1/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1/src/main/java/com/google/shopping/merchant/products/v1/ProductInputName.java b/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1/src/main/java/com/google/shopping/merchant/products/v1/ProductInputName.java
index 8ee25d44a98b..69e8f360b7ca 100644
--- a/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1/src/main/java/com/google/shopping/merchant/products/v1/ProductInputName.java
+++ b/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1/src/main/java/com/google/shopping/merchant/products/v1/ProductInputName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductInputName implements ResourceName {
   private static final PathTemplate ACCOUNT_PRODUCTINPUT =
diff --git a/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1/src/main/java/com/google/shopping/merchant/products/v1/ProductName.java b/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1/src/main/java/com/google/shopping/merchant/products/v1/ProductName.java
index 7f62b2754030..1b6c361f7a41 100644
--- a/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1/src/main/java/com/google/shopping/merchant/products/v1/ProductName.java
+++ b/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1/src/main/java/com/google/shopping/merchant/products/v1/ProductName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductName implements ResourceName {
   private static final PathTemplate ACCOUNT_PRODUCT =
diff --git a/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1beta/src/main/java/com/google/shopping/merchant/products/v1beta/AccountName.java b/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1beta/src/main/java/com/google/shopping/merchant/products/v1beta/AccountName.java
index d5daf31f45db..6e12667b73fd 100644
--- a/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1beta/src/main/java/com/google/shopping/merchant/products/v1beta/AccountName.java
+++ b/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1beta/src/main/java/com/google/shopping/merchant/products/v1beta/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1beta/src/main/java/com/google/shopping/merchant/products/v1beta/ProductInputName.java b/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1beta/src/main/java/com/google/shopping/merchant/products/v1beta/ProductInputName.java
index 3cc507376cec..74437ca9f168 100644
--- a/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1beta/src/main/java/com/google/shopping/merchant/products/v1beta/ProductInputName.java
+++ b/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1beta/src/main/java/com/google/shopping/merchant/products/v1beta/ProductInputName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductInputName implements ResourceName {
   private static final PathTemplate ACCOUNT_PRODUCTINPUT =
diff --git a/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1beta/src/main/java/com/google/shopping/merchant/products/v1beta/ProductName.java b/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1beta/src/main/java/com/google/shopping/merchant/products/v1beta/ProductName.java
index 0cca74f6a992..261abc255b95 100644
--- a/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1beta/src/main/java/com/google/shopping/merchant/products/v1beta/ProductName.java
+++ b/java-shopping-merchant-products/proto-google-shopping-merchant-products-v1beta/src/main/java/com/google/shopping/merchant/products/v1beta/ProductName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductName implements ResourceName {
   private static final PathTemplate ACCOUNT_PRODUCT =
diff --git a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/PromotionsServiceClient.java b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/PromotionsServiceClient.java
index 82fa6778ffbd..a13bc3d53f34 100644
--- a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/PromotionsServiceClient.java
+++ b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/PromotionsServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -179,6 +180,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PromotionsServiceClient implements BackgroundResource {
   private final PromotionsServiceSettings settings;
diff --git a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/PromotionsServiceSettings.java b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/PromotionsServiceSettings.java
index 9f4456f59dd6..2040be196e37 100644
--- a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/PromotionsServiceSettings.java
+++ b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/PromotionsServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PromotionsServiceSettings extends ClientSettings<PromotionsServiceSettings> {
 
diff --git a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/GrpcPromotionsServiceCallableFactory.java b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/GrpcPromotionsServiceCallableFactory.java
index 3f275f2bedf0..20ca6ecea938 100644
--- a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/GrpcPromotionsServiceCallableFactory.java
+++ b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/GrpcPromotionsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPromotionsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/GrpcPromotionsServiceStub.java b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/GrpcPromotionsServiceStub.java
index e3bdd1ad76e4..c12f66b8639b 100644
--- a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/GrpcPromotionsServiceStub.java
+++ b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/GrpcPromotionsServiceStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcPromotionsServiceStub extends PromotionsServiceStub {
   private static final MethodDescriptor<InsertPromotionRequest, Promotion>
diff --git a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/HttpJsonPromotionsServiceCallableFactory.java b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/HttpJsonPromotionsServiceCallableFactory.java
index 8082a53715f6..a08cdbe0e8a2 100644
--- a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/HttpJsonPromotionsServiceCallableFactory.java
+++ b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/HttpJsonPromotionsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPromotionsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/HttpJsonPromotionsServiceStub.java b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/HttpJsonPromotionsServiceStub.java
index 0cac8e18cd36..abd0ed046181 100644
--- a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/HttpJsonPromotionsServiceStub.java
+++ b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/HttpJsonPromotionsServiceStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonPromotionsServiceStub extends PromotionsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/PromotionsServiceStub.java b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/PromotionsServiceStub.java
index c65e89bc00c6..609722070eaf 100644
--- a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/PromotionsServiceStub.java
+++ b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/PromotionsServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.shopping.merchant.promotions.v1.ListPromotionsResponse;
 import com.google.shopping.merchant.promotions.v1.Promotion;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class PromotionsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/PromotionsServiceStubSettings.java b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/PromotionsServiceStubSettings.java
index 3c14a60c16c7..a0effb005751 100644
--- a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/PromotionsServiceStubSettings.java
+++ b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1/stub/PromotionsServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class PromotionsServiceStubSettings extends StubSettings<PromotionsServiceStubSettings> {
diff --git a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/PromotionsServiceClient.java b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/PromotionsServiceClient.java
index 7c8e1ab71d71..a42e82078fe4 100644
--- a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/PromotionsServiceClient.java
+++ b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/PromotionsServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -180,6 +181,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PromotionsServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/PromotionsServiceSettings.java b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/PromotionsServiceSettings.java
index c27eaeae84b8..fc4bcbf5b0a5 100644
--- a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/PromotionsServiceSettings.java
+++ b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/PromotionsServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class PromotionsServiceSettings extends ClientSettings<PromotionsServiceSettings> {
diff --git a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/GrpcPromotionsServiceCallableFactory.java b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/GrpcPromotionsServiceCallableFactory.java
index a5cf4757456c..63c37cff04a2 100644
--- a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/GrpcPromotionsServiceCallableFactory.java
+++ b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/GrpcPromotionsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPromotionsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/GrpcPromotionsServiceStub.java b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/GrpcPromotionsServiceStub.java
index 8894bd2b4bd5..e4c374819ecb 100644
--- a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/GrpcPromotionsServiceStub.java
+++ b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/GrpcPromotionsServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcPromotionsServiceStub extends PromotionsServiceStub {
diff --git a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/HttpJsonPromotionsServiceCallableFactory.java b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/HttpJsonPromotionsServiceCallableFactory.java
index f3cf885a2049..935c07bc76f7 100644
--- a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/HttpJsonPromotionsServiceCallableFactory.java
+++ b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/HttpJsonPromotionsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPromotionsServiceCallableFactory
diff --git a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/HttpJsonPromotionsServiceStub.java b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/HttpJsonPromotionsServiceStub.java
index 14bac7e594a3..952e996d4390 100644
--- a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/HttpJsonPromotionsServiceStub.java
+++ b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/HttpJsonPromotionsServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonPromotionsServiceStub extends PromotionsServiceStub {
diff --git a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/PromotionsServiceStub.java b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/PromotionsServiceStub.java
index a2a715e5e1c0..03b9c17936a5 100644
--- a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/PromotionsServiceStub.java
+++ b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/PromotionsServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.shopping.merchant.promotions.v1beta.ListPromotionsResponse;
 import com.google.shopping.merchant.promotions.v1beta.Promotion;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class PromotionsServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/PromotionsServiceStubSettings.java b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/PromotionsServiceStubSettings.java
index 503d46aa7eaa..549a853bc956 100644
--- a/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/PromotionsServiceStubSettings.java
+++ b/java-shopping-merchant-promotions/google-shopping-merchant-promotions/src/main/java/com/google/shopping/merchant/promotions/v1beta/stub/PromotionsServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-promotions/proto-google-shopping-merchant-promotions-v1/src/main/java/com/google/shopping/merchant/promotions/v1/PromotionName.java b/java-shopping-merchant-promotions/proto-google-shopping-merchant-promotions-v1/src/main/java/com/google/shopping/merchant/promotions/v1/PromotionName.java
index b68fa52603bf..8e2f53f1d2c7 100644
--- a/java-shopping-merchant-promotions/proto-google-shopping-merchant-promotions-v1/src/main/java/com/google/shopping/merchant/promotions/v1/PromotionName.java
+++ b/java-shopping-merchant-promotions/proto-google-shopping-merchant-promotions-v1/src/main/java/com/google/shopping/merchant/promotions/v1/PromotionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PromotionName implements ResourceName {
   private static final PathTemplate ACCOUNT_PROMOTION =
diff --git a/java-shopping-merchant-promotions/proto-google-shopping-merchant-promotions-v1beta/src/main/java/com/google/shopping/merchant/promotions/v1beta/PromotionName.java b/java-shopping-merchant-promotions/proto-google-shopping-merchant-promotions-v1beta/src/main/java/com/google/shopping/merchant/promotions/v1beta/PromotionName.java
index 6ad6ba927277..fcd1a6158181 100644
--- a/java-shopping-merchant-promotions/proto-google-shopping-merchant-promotions-v1beta/src/main/java/com/google/shopping/merchant/promotions/v1beta/PromotionName.java
+++ b/java-shopping-merchant-promotions/proto-google-shopping-merchant-promotions-v1beta/src/main/java/com/google/shopping/merchant/promotions/v1beta/PromotionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PromotionName implements ResourceName {
   private static final PathTemplate ACCOUNT_PROMOTION =
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/AccountLimitsServiceClient.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/AccountLimitsServiceClient.java
index 17b7f54a384c..1f21ea29f270 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/AccountLimitsServiceClient.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/AccountLimitsServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -160,6 +161,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountLimitsServiceClient implements BackgroundResource {
   private final AccountLimitsServiceSettings settings;
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/AccountLimitsServiceSettings.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/AccountLimitsServiceSettings.java
index e46984405ce8..14ccad3bde95 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/AccountLimitsServiceSettings.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/AccountLimitsServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountLimitsServiceSettings extends ClientSettings<AccountLimitsServiceSettings> {
 
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/QuotaServiceClient.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/QuotaServiceClient.java
index f5af3a4c0f12..f49a6c759fbb 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/QuotaServiceClient.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/QuotaServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -137,6 +138,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QuotaServiceClient implements BackgroundResource {
   private final QuotaServiceSettings settings;
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/QuotaServiceSettings.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/QuotaServiceSettings.java
index 43623305ecea..ff08414ca462 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/QuotaServiceSettings.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/QuotaServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QuotaServiceSettings extends ClientSettings<QuotaServiceSettings> {
 
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/AccountLimitsServiceStub.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/AccountLimitsServiceStub.java
index c457dd4edd9f..f461b4d54a57 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/AccountLimitsServiceStub.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/AccountLimitsServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.shopping.merchant.quota.v1.ListAccountLimitsRequest;
 import com.google.shopping.merchant.quota.v1.ListAccountLimitsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AccountLimitsServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/AccountLimitsServiceStubSettings.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/AccountLimitsServiceStubSettings.java
index f27dacf34e77..6085bb96be5e 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/AccountLimitsServiceStubSettings.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/AccountLimitsServiceStubSettings.java
@@ -57,6 +57,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AccountLimitsServiceStubSettings
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/GrpcAccountLimitsServiceCallableFactory.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/GrpcAccountLimitsServiceCallableFactory.java
index 62f39e216dac..d1253f5c13e6 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/GrpcAccountLimitsServiceCallableFactory.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/GrpcAccountLimitsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAccountLimitsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/GrpcAccountLimitsServiceStub.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/GrpcAccountLimitsServiceStub.java
index 797ff1f8a58c..0830f98dfaa0 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/GrpcAccountLimitsServiceStub.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/GrpcAccountLimitsServiceStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAccountLimitsServiceStub extends AccountLimitsServiceStub {
   private static final MethodDescriptor<GetAccountLimitRequest, AccountLimit>
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/GrpcQuotaServiceCallableFactory.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/GrpcQuotaServiceCallableFactory.java
index eee70bfc0231..7e89e22872db 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/GrpcQuotaServiceCallableFactory.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/GrpcQuotaServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcQuotaServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/GrpcQuotaServiceStub.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/GrpcQuotaServiceStub.java
index 9e7050180a20..4b2e28df5d8c 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/GrpcQuotaServiceStub.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/GrpcQuotaServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcQuotaServiceStub extends QuotaServiceStub {
   private static final MethodDescriptor<ListQuotaGroupsRequest, ListQuotaGroupsResponse>
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/HttpJsonAccountLimitsServiceCallableFactory.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/HttpJsonAccountLimitsServiceCallableFactory.java
index 7ce3f6af38a3..d83e7b768911 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/HttpJsonAccountLimitsServiceCallableFactory.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/HttpJsonAccountLimitsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountLimitsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/HttpJsonAccountLimitsServiceStub.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/HttpJsonAccountLimitsServiceStub.java
index 61cbdc68f7c6..8568ffcf0ac9 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/HttpJsonAccountLimitsServiceStub.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/HttpJsonAccountLimitsServiceStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAccountLimitsServiceStub extends AccountLimitsServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/HttpJsonQuotaServiceCallableFactory.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/HttpJsonQuotaServiceCallableFactory.java
index 41e5ee54e415..086dc320091c 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/HttpJsonQuotaServiceCallableFactory.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/HttpJsonQuotaServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonQuotaServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/HttpJsonQuotaServiceStub.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/HttpJsonQuotaServiceStub.java
index eb630b7f1077..b20d3a1e97fb 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/HttpJsonQuotaServiceStub.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/HttpJsonQuotaServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonQuotaServiceStub extends QuotaServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/QuotaServiceStub.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/QuotaServiceStub.java
index 3d41ab93fdb1..5dfc5fa5527f 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/QuotaServiceStub.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/QuotaServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.shopping.merchant.quota.v1.ListQuotaGroupsRequest;
 import com.google.shopping.merchant.quota.v1.ListQuotaGroupsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class QuotaServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/QuotaServiceStubSettings.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/QuotaServiceStubSettings.java
index d0149a1007b2..e3bcd2b957e6 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/QuotaServiceStubSettings.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1/stub/QuotaServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class QuotaServiceStubSettings extends StubSettings<QuotaServiceStubSettings> {
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/QuotaServiceClient.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/QuotaServiceClient.java
index 0450d3107081..eb46202e9b02 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/QuotaServiceClient.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/QuotaServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -138,6 +139,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class QuotaServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/QuotaServiceSettings.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/QuotaServiceSettings.java
index ca8528d0a5da..27a1d2a4a372 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/QuotaServiceSettings.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/QuotaServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class QuotaServiceSettings extends ClientSettings<QuotaServiceSettings> {
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/GrpcQuotaServiceCallableFactory.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/GrpcQuotaServiceCallableFactory.java
index fd825e2fb1c0..4a38a1c1f3b1 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/GrpcQuotaServiceCallableFactory.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/GrpcQuotaServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcQuotaServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/GrpcQuotaServiceStub.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/GrpcQuotaServiceStub.java
index e24e6c14baa6..3451ccf00cd1 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/GrpcQuotaServiceStub.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/GrpcQuotaServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcQuotaServiceStub extends QuotaServiceStub {
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/HttpJsonQuotaServiceCallableFactory.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/HttpJsonQuotaServiceCallableFactory.java
index 967a1c8b5aef..d055d4d4bf89 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/HttpJsonQuotaServiceCallableFactory.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/HttpJsonQuotaServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonQuotaServiceCallableFactory
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/HttpJsonQuotaServiceStub.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/HttpJsonQuotaServiceStub.java
index 2c5bdd422f19..76c35f24d5d1 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/HttpJsonQuotaServiceStub.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/HttpJsonQuotaServiceStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonQuotaServiceStub extends QuotaServiceStub {
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/QuotaServiceStub.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/QuotaServiceStub.java
index 61f61973da34..433322b65383 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/QuotaServiceStub.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/QuotaServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.shopping.merchant.quota.v1beta.ListQuotaGroupsRequest;
 import com.google.shopping.merchant.quota.v1beta.ListQuotaGroupsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class QuotaServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/QuotaServiceStubSettings.java b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/QuotaServiceStubSettings.java
index 1698c5980ac5..1861fe55bac2 100644
--- a/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/QuotaServiceStubSettings.java
+++ b/java-shopping-merchant-quota/google-shopping-merchant-quota/src/main/java/com/google/shopping/merchant/quota/v1beta/stub/QuotaServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1/src/main/java/com/google/shopping/merchant/quota/v1/AccountLimitName.java b/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1/src/main/java/com/google/shopping/merchant/quota/v1/AccountLimitName.java
index d546d0749368..2647f1830f64 100644
--- a/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1/src/main/java/com/google/shopping/merchant/quota/v1/AccountLimitName.java
+++ b/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1/src/main/java/com/google/shopping/merchant/quota/v1/AccountLimitName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountLimitName implements ResourceName {
   private static final PathTemplate ACCOUNT_LIMIT =
diff --git a/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1/src/main/java/com/google/shopping/merchant/quota/v1/AccountName.java b/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1/src/main/java/com/google/shopping/merchant/quota/v1/AccountName.java
index 9d50b5474254..6774412e4651 100644
--- a/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1/src/main/java/com/google/shopping/merchant/quota/v1/AccountName.java
+++ b/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1/src/main/java/com/google/shopping/merchant/quota/v1/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1/src/main/java/com/google/shopping/merchant/quota/v1/QuotaGroupName.java b/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1/src/main/java/com/google/shopping/merchant/quota/v1/QuotaGroupName.java
index 3e2c58bc947c..1314166bd95f 100644
--- a/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1/src/main/java/com/google/shopping/merchant/quota/v1/QuotaGroupName.java
+++ b/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1/src/main/java/com/google/shopping/merchant/quota/v1/QuotaGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QuotaGroupName implements ResourceName {
   private static final PathTemplate ACCOUNT_GROUP =
diff --git a/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1beta/src/main/java/com/google/shopping/merchant/quota/v1beta/AccountName.java b/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1beta/src/main/java/com/google/shopping/merchant/quota/v1beta/AccountName.java
index 48afaa97bb92..ac9fef63ff32 100644
--- a/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1beta/src/main/java/com/google/shopping/merchant/quota/v1beta/AccountName.java
+++ b/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1beta/src/main/java/com/google/shopping/merchant/quota/v1beta/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1beta/src/main/java/com/google/shopping/merchant/quota/v1beta/QuotaGroupName.java b/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1beta/src/main/java/com/google/shopping/merchant/quota/v1beta/QuotaGroupName.java
index 216f4a4fd9d5..21dbc52ec60d 100644
--- a/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1beta/src/main/java/com/google/shopping/merchant/quota/v1beta/QuotaGroupName.java
+++ b/java-shopping-merchant-quota/proto-google-shopping-merchant-quota-v1beta/src/main/java/com/google/shopping/merchant/quota/v1beta/QuotaGroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QuotaGroupName implements ResourceName {
   private static final PathTemplate ACCOUNT_GROUP =
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/ReportServiceClient.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/ReportServiceClient.java
index f049b44d2092..d2d8029e1a24 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/ReportServiceClient.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/ReportServiceClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -138,6 +139,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReportServiceClient implements BackgroundResource {
   private final ReportServiceSettings settings;
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/ReportServiceSettings.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/ReportServiceSettings.java
index fffed5cef3d4..0b2071d227fe 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/ReportServiceSettings.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/ReportServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReportServiceSettings extends ClientSettings<ReportServiceSettings> {
 
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/GrpcReportServiceCallableFactory.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/GrpcReportServiceCallableFactory.java
index de9718052d56..73d00c7e32de 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/GrpcReportServiceCallableFactory.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/GrpcReportServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcReportServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/GrpcReportServiceStub.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/GrpcReportServiceStub.java
index 101170a674c7..d50fc9e023b0 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/GrpcReportServiceStub.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/GrpcReportServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcReportServiceStub extends ReportServiceStub {
   private static final MethodDescriptor<SearchRequest, SearchResponse> searchMethodDescriptor =
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/HttpJsonReportServiceCallableFactory.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/HttpJsonReportServiceCallableFactory.java
index 979745fd4631..cd56ee0a70ee 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/HttpJsonReportServiceCallableFactory.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/HttpJsonReportServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonReportServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/HttpJsonReportServiceStub.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/HttpJsonReportServiceStub.java
index 66b2cb274b5b..11377e1e5015 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/HttpJsonReportServiceStub.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/HttpJsonReportServiceStub.java
@@ -40,6 +40,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonReportServiceStub extends ReportServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/ReportServiceStub.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/ReportServiceStub.java
index 97a7990174e2..daf6e266b4dc 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/ReportServiceStub.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/ReportServiceStub.java
@@ -23,6 +23,7 @@
 import com.google.shopping.merchant.reports.v1.SearchRequest;
 import com.google.shopping.merchant.reports.v1.SearchResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -30,6 +31,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ReportServiceStub implements BackgroundResource {
 
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/ReportServiceStubSettings.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/ReportServiceStubSettings.java
index ae006c46a69f..aee4a47adbc3 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/ReportServiceStubSettings.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1/stub/ReportServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ReportServiceStubSettings extends StubSettings<ReportServiceStubSettings> {
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/ReportServiceClient.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/ReportServiceClient.java
index ee4ac1763442..7746cb4bfb8b 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/ReportServiceClient.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/ReportServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -139,6 +140,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ReportServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/ReportServiceSettings.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/ReportServiceSettings.java
index fb595fc907cd..bc6063b7878d 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/ReportServiceSettings.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/ReportServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ReportServiceSettings extends ClientSettings<ReportServiceSettings> {
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/GrpcReportServiceCallableFactory.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/GrpcReportServiceCallableFactory.java
index c65552c64e74..d3c89e7f6254 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/GrpcReportServiceCallableFactory.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/GrpcReportServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcReportServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/GrpcReportServiceStub.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/GrpcReportServiceStub.java
index 12e0db790a24..aaa7d0f6fc3c 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/GrpcReportServiceStub.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/GrpcReportServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcReportServiceStub extends ReportServiceStub {
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/HttpJsonReportServiceCallableFactory.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/HttpJsonReportServiceCallableFactory.java
index 842eba2191f2..74acd63eaaf2 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/HttpJsonReportServiceCallableFactory.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/HttpJsonReportServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonReportServiceCallableFactory
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/HttpJsonReportServiceStub.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/HttpJsonReportServiceStub.java
index 5529a57211c4..ea049b425cd4 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/HttpJsonReportServiceStub.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/HttpJsonReportServiceStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonReportServiceStub extends ReportServiceStub {
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/ReportServiceStub.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/ReportServiceStub.java
index 72df0da19e5f..91aedfdd651a 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/ReportServiceStub.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/ReportServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.shopping.merchant.reports.v1alpha.SearchRequest;
 import com.google.shopping.merchant.reports.v1alpha.SearchResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ReportServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/ReportServiceStubSettings.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/ReportServiceStubSettings.java
index a728ff58f3f2..27313ac7e1e0 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/ReportServiceStubSettings.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1alpha/stub/ReportServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/ReportServiceClient.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/ReportServiceClient.java
index 5a861cbff09c..8c27298cb72f 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/ReportServiceClient.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/ReportServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -139,6 +140,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ReportServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/ReportServiceSettings.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/ReportServiceSettings.java
index 479749bf60ab..56090cc263af 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/ReportServiceSettings.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/ReportServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ReportServiceSettings extends ClientSettings<ReportServiceSettings> {
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/GrpcReportServiceCallableFactory.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/GrpcReportServiceCallableFactory.java
index 88759df77cc4..f60216a9c0ca 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/GrpcReportServiceCallableFactory.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/GrpcReportServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcReportServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/GrpcReportServiceStub.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/GrpcReportServiceStub.java
index a2f72884b79d..5db8597735dd 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/GrpcReportServiceStub.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/GrpcReportServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcReportServiceStub extends ReportServiceStub {
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/HttpJsonReportServiceCallableFactory.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/HttpJsonReportServiceCallableFactory.java
index c90fbf186cb4..85a7ad48d1ee 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/HttpJsonReportServiceCallableFactory.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/HttpJsonReportServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonReportServiceCallableFactory
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/HttpJsonReportServiceStub.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/HttpJsonReportServiceStub.java
index a07ebe96f37c..62ae9ba95fac 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/HttpJsonReportServiceStub.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/HttpJsonReportServiceStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonReportServiceStub extends ReportServiceStub {
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/ReportServiceStub.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/ReportServiceStub.java
index 563020586389..d78d06edefe3 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/ReportServiceStub.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/ReportServiceStub.java
@@ -24,6 +24,7 @@
 import com.google.shopping.merchant.reports.v1beta.SearchRequest;
 import com.google.shopping.merchant.reports.v1beta.SearchResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ReportServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/ReportServiceStubSettings.java b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/ReportServiceStubSettings.java
index 019dcef0abbf..5561798345e2 100644
--- a/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/ReportServiceStubSettings.java
+++ b/java-shopping-merchant-reports/google-shopping-merchant-reports/src/main/java/com/google/shopping/merchant/reports/v1beta/stub/ReportServiceStubSettings.java
@@ -56,6 +56,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -107,6 +108,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/MerchantReviewsServiceClient.java b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/MerchantReviewsServiceClient.java
index 6de92d177776..09a1b274c0a2 100644
--- a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/MerchantReviewsServiceClient.java
+++ b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/MerchantReviewsServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -195,6 +196,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MerchantReviewsServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/MerchantReviewsServiceSettings.java b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/MerchantReviewsServiceSettings.java
index 1a4ccb16a83c..456a545179db 100644
--- a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/MerchantReviewsServiceSettings.java
+++ b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/MerchantReviewsServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MerchantReviewsServiceSettings extends ClientSettings<MerchantReviewsServiceSettings> {
diff --git a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/ProductReviewsServiceClient.java b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/ProductReviewsServiceClient.java
index 038706d354d8..b735ed729e77 100644
--- a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/ProductReviewsServiceClient.java
+++ b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/ProductReviewsServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -195,6 +196,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProductReviewsServiceClient implements BackgroundResource {
diff --git a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/ProductReviewsServiceSettings.java b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/ProductReviewsServiceSettings.java
index d9b52065b685..347bbc69216b 100644
--- a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/ProductReviewsServiceSettings.java
+++ b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/ProductReviewsServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProductReviewsServiceSettings extends ClientSettings<ProductReviewsServiceSettings> {
diff --git a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/GrpcMerchantReviewsServiceCallableFactory.java b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/GrpcMerchantReviewsServiceCallableFactory.java
index 2c11a2510644..35594ca27cef 100644
--- a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/GrpcMerchantReviewsServiceCallableFactory.java
+++ b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/GrpcMerchantReviewsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMerchantReviewsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/GrpcMerchantReviewsServiceStub.java b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/GrpcMerchantReviewsServiceStub.java
index 4824a348ffc2..d06aafff64eb 100644
--- a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/GrpcMerchantReviewsServiceStub.java
+++ b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/GrpcMerchantReviewsServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMerchantReviewsServiceStub extends MerchantReviewsServiceStub {
diff --git a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/GrpcProductReviewsServiceCallableFactory.java b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/GrpcProductReviewsServiceCallableFactory.java
index c2448bbbf216..ac2d3e6a6e55 100644
--- a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/GrpcProductReviewsServiceCallableFactory.java
+++ b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/GrpcProductReviewsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProductReviewsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/GrpcProductReviewsServiceStub.java b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/GrpcProductReviewsServiceStub.java
index 2120bbf90660..48faf0d5f846 100644
--- a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/GrpcProductReviewsServiceStub.java
+++ b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/GrpcProductReviewsServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProductReviewsServiceStub extends ProductReviewsServiceStub {
diff --git a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/HttpJsonMerchantReviewsServiceCallableFactory.java b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/HttpJsonMerchantReviewsServiceCallableFactory.java
index 76e40a109475..0c1e65f85cff 100644
--- a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/HttpJsonMerchantReviewsServiceCallableFactory.java
+++ b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/HttpJsonMerchantReviewsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMerchantReviewsServiceCallableFactory
diff --git a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/HttpJsonMerchantReviewsServiceStub.java b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/HttpJsonMerchantReviewsServiceStub.java
index 6e3d5b2a268a..b2a5bd8b3dd4 100644
--- a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/HttpJsonMerchantReviewsServiceStub.java
+++ b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/HttpJsonMerchantReviewsServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMerchantReviewsServiceStub extends MerchantReviewsServiceStub {
diff --git a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/HttpJsonProductReviewsServiceCallableFactory.java b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/HttpJsonProductReviewsServiceCallableFactory.java
index 37930a0c0e0d..80fe179ab3e6 100644
--- a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/HttpJsonProductReviewsServiceCallableFactory.java
+++ b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/HttpJsonProductReviewsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProductReviewsServiceCallableFactory
diff --git a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/HttpJsonProductReviewsServiceStub.java b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/HttpJsonProductReviewsServiceStub.java
index c71751edf44d..7ab745da9ee3 100644
--- a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/HttpJsonProductReviewsServiceStub.java
+++ b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/HttpJsonProductReviewsServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProductReviewsServiceStub extends ProductReviewsServiceStub {
diff --git a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/MerchantReviewsServiceStub.java b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/MerchantReviewsServiceStub.java
index d6e20548bdde..4ca8a754d3e1 100644
--- a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/MerchantReviewsServiceStub.java
+++ b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/MerchantReviewsServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.shopping.merchant.reviews.v1beta.ListMerchantReviewsResponse;
 import com.google.shopping.merchant.reviews.v1beta.MerchantReview;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class MerchantReviewsServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/MerchantReviewsServiceStubSettings.java b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/MerchantReviewsServiceStubSettings.java
index 8a311c0ef5a6..46caeeaeecb4 100644
--- a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/MerchantReviewsServiceStubSettings.java
+++ b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/MerchantReviewsServiceStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/ProductReviewsServiceStub.java b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/ProductReviewsServiceStub.java
index 5f843503acf6..f5d3f3998978 100644
--- a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/ProductReviewsServiceStub.java
+++ b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/ProductReviewsServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.shopping.merchant.reviews.v1beta.ListProductReviewsResponse;
 import com.google.shopping.merchant.reviews.v1beta.ProductReview;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ProductReviewsServiceStub implements BackgroundResource {
diff --git a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/ProductReviewsServiceStubSettings.java b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/ProductReviewsServiceStubSettings.java
index a470e78f6957..8bd162090274 100644
--- a/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/ProductReviewsServiceStubSettings.java
+++ b/java-shopping-merchant-reviews/google-shopping-merchant-reviews/src/main/java/com/google/shopping/merchant/reviews/v1beta/stub/ProductReviewsServiceStubSettings.java
@@ -60,6 +60,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-shopping-merchant-reviews/proto-google-shopping-merchant-reviews-v1beta/src/main/java/com/google/shopping/merchant/reviews/v1beta/AccountName.java b/java-shopping-merchant-reviews/proto-google-shopping-merchant-reviews-v1beta/src/main/java/com/google/shopping/merchant/reviews/v1beta/AccountName.java
index 81e723db50ac..4ecbb5bbe487 100644
--- a/java-shopping-merchant-reviews/proto-google-shopping-merchant-reviews-v1beta/src/main/java/com/google/shopping/merchant/reviews/v1beta/AccountName.java
+++ b/java-shopping-merchant-reviews/proto-google-shopping-merchant-reviews-v1beta/src/main/java/com/google/shopping/merchant/reviews/v1beta/AccountName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AccountName implements ResourceName {
   private static final PathTemplate ACCOUNT =
diff --git a/java-shopping-merchant-reviews/proto-google-shopping-merchant-reviews-v1beta/src/main/java/com/google/shopping/merchant/reviews/v1beta/MerchantReviewName.java b/java-shopping-merchant-reviews/proto-google-shopping-merchant-reviews-v1beta/src/main/java/com/google/shopping/merchant/reviews/v1beta/MerchantReviewName.java
index 0acc12d96192..4b050f82cd40 100644
--- a/java-shopping-merchant-reviews/proto-google-shopping-merchant-reviews-v1beta/src/main/java/com/google/shopping/merchant/reviews/v1beta/MerchantReviewName.java
+++ b/java-shopping-merchant-reviews/proto-google-shopping-merchant-reviews-v1beta/src/main/java/com/google/shopping/merchant/reviews/v1beta/MerchantReviewName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MerchantReviewName implements ResourceName {
   private static final PathTemplate ACCOUNT_NAME =
diff --git a/java-shopping-merchant-reviews/proto-google-shopping-merchant-reviews-v1beta/src/main/java/com/google/shopping/merchant/reviews/v1beta/ProductReviewName.java b/java-shopping-merchant-reviews/proto-google-shopping-merchant-reviews-v1beta/src/main/java/com/google/shopping/merchant/reviews/v1beta/ProductReviewName.java
index de6687c2dee8..830bc1448ed6 100644
--- a/java-shopping-merchant-reviews/proto-google-shopping-merchant-reviews-v1beta/src/main/java/com/google/shopping/merchant/reviews/v1beta/ProductReviewName.java
+++ b/java-shopping-merchant-reviews/proto-google-shopping-merchant-reviews-v1beta/src/main/java/com/google/shopping/merchant/reviews/v1beta/ProductReviewName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductReviewName implements ResourceName {
   private static final PathTemplate ACCOUNT_PRODUCTREVIEW =
diff --git a/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/SpannerExecutorProxyClient.java b/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/SpannerExecutorProxyClient.java
index fd83e680e9cc..4b9eb9f2f15b 100644
--- a/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/SpannerExecutorProxyClient.java
+++ b/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/SpannerExecutorProxyClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpannerExecutorProxyClient implements BackgroundResource {
   private final SpannerExecutorProxySettings settings;
diff --git a/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/SpannerExecutorProxySettings.java b/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/SpannerExecutorProxySettings.java
index ed4b3c70d653..4b598edeabca 100644
--- a/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/SpannerExecutorProxySettings.java
+++ b/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/SpannerExecutorProxySettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpannerExecutorProxySettings extends ClientSettings<SpannerExecutorProxySettings> {
 
diff --git a/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/stub/GrpcSpannerExecutorProxyCallableFactory.java b/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/stub/GrpcSpannerExecutorProxyCallableFactory.java
index 2bdb97650365..cfd9e8a03042 100644
--- a/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/stub/GrpcSpannerExecutorProxyCallableFactory.java
+++ b/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/stub/GrpcSpannerExecutorProxyCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSpannerExecutorProxyCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/stub/GrpcSpannerExecutorProxyStub.java b/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/stub/GrpcSpannerExecutorProxyStub.java
index 56a1d3ff55ad..6caaf4ecf8b7 100644
--- a/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/stub/GrpcSpannerExecutorProxyStub.java
+++ b/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/stub/GrpcSpannerExecutorProxyStub.java
@@ -30,6 +30,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSpannerExecutorProxyStub extends SpannerExecutorProxyStub {
   private static final MethodDescriptor<SpannerAsyncActionRequest, SpannerAsyncActionResponse>
diff --git a/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/stub/SpannerExecutorProxyStub.java b/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/stub/SpannerExecutorProxyStub.java
index 8c932e57f959..16578e18ae0b 100644
--- a/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/stub/SpannerExecutorProxyStub.java
+++ b/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/stub/SpannerExecutorProxyStub.java
@@ -21,6 +21,7 @@
 import com.google.spanner.executor.v1.SpannerAsyncActionRequest;
 import com.google.spanner.executor.v1.SpannerAsyncActionResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SpannerExecutorProxyStub implements BackgroundResource {
 
diff --git a/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/stub/SpannerExecutorProxyStubSettings.java b/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/stub/SpannerExecutorProxyStubSettings.java
index 132282528fa3..abcec88312eb 100644
--- a/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/stub/SpannerExecutorProxyStubSettings.java
+++ b/java-spanner/google-cloud-spanner-executor/src/main/java/com/google/cloud/spanner/executor/v1/stub/SpannerExecutorProxyStubSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -95,6 +96,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SpannerExecutorProxyStubSettings
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminClient.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminClient.java
index a75e9d546eb6..2b01b1458db8 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminClient.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminClient.java
@@ -93,6 +93,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -716,6 +717,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatabaseAdminClient implements BackgroundResource {
   private final DatabaseAdminSettings settings;
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminSettings.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminSettings.java
index 7457cd253c5a..0360f9b80093 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminSettings.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminSettings.java
@@ -89,6 +89,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -164,6 +165,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatabaseAdminSettings extends ClientSettings<DatabaseAdminSettings> {
 
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/DatabaseAdminStub.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/DatabaseAdminStub.java
index ffb3b37e8bda..656e079e83bd 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/DatabaseAdminStub.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/DatabaseAdminStub.java
@@ -77,6 +77,7 @@
 import com.google.spanner.admin.database.v1.UpdateDatabaseMetadata;
 import com.google.spanner.admin.database.v1.UpdateDatabaseRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DatabaseAdminStub implements BackgroundResource {
 
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/DatabaseAdminStubSettings.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/DatabaseAdminStubSettings.java
index b3e281670ef1..3ca89e1bad20 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/DatabaseAdminStubSettings.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/DatabaseAdminStubSettings.java
@@ -112,6 +112,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -189,6 +190,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DatabaseAdminStubSettings extends StubSettings<DatabaseAdminStubSettings> {
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/GrpcDatabaseAdminCallableFactory.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/GrpcDatabaseAdminCallableFactory.java
index 15fa1361452c..de4e0712b2ae 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/GrpcDatabaseAdminCallableFactory.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/GrpcDatabaseAdminCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDatabaseAdminCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/GrpcDatabaseAdminStub.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/GrpcDatabaseAdminStub.java
index fcebc037b4b4..db2f2501dabf 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/GrpcDatabaseAdminStub.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/GrpcDatabaseAdminStub.java
@@ -86,6 +86,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -93,6 +94,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDatabaseAdminStub extends DatabaseAdminStub {
   private static final MethodDescriptor<ListDatabasesRequest, ListDatabasesResponse>
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/HttpJsonDatabaseAdminCallableFactory.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/HttpJsonDatabaseAdminCallableFactory.java
index 0d93f799046c..c3ff5d354a89 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/HttpJsonDatabaseAdminCallableFactory.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/HttpJsonDatabaseAdminCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDatabaseAdminCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/HttpJsonDatabaseAdminStub.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/HttpJsonDatabaseAdminStub.java
index ca101a1412ed..ce8613e8b95c 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/HttpJsonDatabaseAdminStub.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/HttpJsonDatabaseAdminStub.java
@@ -97,6 +97,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -104,6 +105,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDatabaseAdminStub extends DatabaseAdminStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminClient.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminClient.java
index 05150d865e77..99ed4e232d5b 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminClient.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminClient.java
@@ -82,6 +82,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -656,6 +657,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceAdminClient implements BackgroundResource {
   private final InstanceAdminSettings settings;
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminSettings.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminSettings.java
index 3b4af74269f9..929ee8bd5351 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminSettings.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminSettings.java
@@ -80,6 +80,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceAdminSettings extends ClientSettings<InstanceAdminSettings> {
 
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/GrpcInstanceAdminCallableFactory.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/GrpcInstanceAdminCallableFactory.java
index 983c0fda6e01..4842dd007702 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/GrpcInstanceAdminCallableFactory.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/GrpcInstanceAdminCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcInstanceAdminCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/GrpcInstanceAdminStub.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/GrpcInstanceAdminStub.java
index 25e7711e8da4..493a97a63264 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/GrpcInstanceAdminStub.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/GrpcInstanceAdminStub.java
@@ -77,6 +77,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcInstanceAdminStub extends InstanceAdminStub {
   private static final MethodDescriptor<ListInstanceConfigsRequest, ListInstanceConfigsResponse>
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/HttpJsonInstanceAdminCallableFactory.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/HttpJsonInstanceAdminCallableFactory.java
index cad7d83e97ef..848e7edacf5e 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/HttpJsonInstanceAdminCallableFactory.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/HttpJsonInstanceAdminCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstanceAdminCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/HttpJsonInstanceAdminStub.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/HttpJsonInstanceAdminStub.java
index 993e01537d3b..8b95cd3082f9 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/HttpJsonInstanceAdminStub.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/HttpJsonInstanceAdminStub.java
@@ -88,6 +88,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -95,6 +96,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonInstanceAdminStub extends InstanceAdminStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/InstanceAdminStub.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/InstanceAdminStub.java
index 2c8e3f1c4d96..e76f6180b38f 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/InstanceAdminStub.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/InstanceAdminStub.java
@@ -68,6 +68,7 @@
 import com.google.spanner.admin.instance.v1.UpdateInstancePartitionRequest;
 import com.google.spanner.admin.instance.v1.UpdateInstanceRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class InstanceAdminStub implements BackgroundResource {
 
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/InstanceAdminStubSettings.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/InstanceAdminStubSettings.java
index 7c32a3f90baa..6f1f15aa8f60 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/InstanceAdminStubSettings.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/InstanceAdminStubSettings.java
@@ -102,6 +102,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -179,6 +180,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class InstanceAdminStubSettings extends StubSettings<InstanceAdminStubSettings> {
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/SpannerClient.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/SpannerClient.java
index 10d9af0b774e..bf665cb26e17 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/SpannerClient.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/SpannerClient.java
@@ -64,6 +64,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -435,6 +436,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpannerClient implements BackgroundResource {
   private final SpannerSettings settings;
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/SpannerSettings.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/SpannerSettings.java
index e35376ed8d60..ebe5ccf2fabc 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/SpannerSettings.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/SpannerSettings.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpannerSettings extends ClientSettings<SpannerSettings> {
 
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/GrpcSpannerCallableFactory.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/GrpcSpannerCallableFactory.java
index afb24becec43..b7e7468ed400 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/GrpcSpannerCallableFactory.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/GrpcSpannerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSpannerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/GrpcSpannerStub.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/GrpcSpannerStub.java
index c7390e416e0f..348d7430ad02 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/GrpcSpannerStub.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/GrpcSpannerStub.java
@@ -59,6 +59,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSpannerStub extends SpannerStub {
   private static final MethodDescriptor<CreateSessionRequest, Session>
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/HttpJsonSpannerCallableFactory.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/HttpJsonSpannerCallableFactory.java
index df6025750396..fca3bdd5d233 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/HttpJsonSpannerCallableFactory.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/HttpJsonSpannerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSpannerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/HttpJsonSpannerStub.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/HttpJsonSpannerStub.java
index 066105733486..05e3d385de35 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/HttpJsonSpannerStub.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/HttpJsonSpannerStub.java
@@ -66,6 +66,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSpannerStub extends SpannerStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/SpannerStub.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/SpannerStub.java
index b9143334db4a..52da37ca81e4 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/SpannerStub.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/SpannerStub.java
@@ -49,6 +49,7 @@
 import com.google.spanner.v1.Session;
 import com.google.spanner.v1.Transaction;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SpannerStub implements BackgroundResource {
 
diff --git a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/SpannerStubSettings.java b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/SpannerStubSettings.java
index fc03405ce9b7..6c83f72b504e 100644
--- a/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/SpannerStubSettings.java
+++ b/java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/SpannerStubSettings.java
@@ -81,6 +81,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SpannerStubSettings extends StubSettings<SpannerStubSettings> {
diff --git a/java-spanner/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupName.java b/java-spanner/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupName.java
index da90c9f84018..0137fb39d00e 100644
--- a/java-spanner/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupName.java
+++ b/java-spanner/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_BACKUP =
diff --git a/java-spanner/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupScheduleName.java b/java-spanner/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupScheduleName.java
index 0fd9b79cd7a8..e9656b56bf96 100644
--- a/java-spanner/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupScheduleName.java
+++ b/java-spanner/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupScheduleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupScheduleName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_DATABASE_SCHEDULE =
diff --git a/java-spanner/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DatabaseName.java b/java-spanner/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DatabaseName.java
index 55973a0c023b..277ec39c4aaf 100644
--- a/java-spanner/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DatabaseName.java
+++ b/java-spanner/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DatabaseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatabaseName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_DATABASE =
diff --git a/java-spanner/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/InstanceName.java b/java-spanner/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/InstanceName.java
index 0c1510da67d8..06f17c44a931 100644
--- a/java-spanner/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/InstanceName.java
+++ b/java-spanner/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE =
diff --git a/java-spanner/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceConfigName.java b/java-spanner/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceConfigName.java
index 4ddad6fa8095..6aa676971d4b 100644
--- a/java-spanner/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceConfigName.java
+++ b/java-spanner/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceConfigName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_CONFIG =
diff --git a/java-spanner/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceName.java b/java-spanner/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceName.java
index c6f2744d7c7b..fa04db3cb64c 100644
--- a/java-spanner/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceName.java
+++ b/java-spanner/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE =
diff --git a/java-spanner/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstancePartitionName.java b/java-spanner/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstancePartitionName.java
index 1812ebe25e13..c95f13073af5 100644
--- a/java-spanner/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstancePartitionName.java
+++ b/java-spanner/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstancePartitionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstancePartitionName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_INSTANCE_PARTITION =
diff --git a/java-spanner/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ProjectName.java b/java-spanner/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ProjectName.java
index e23ddfeff71c..a9deb9f61ffd 100644
--- a/java-spanner/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ProjectName.java
+++ b/java-spanner/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-spanner/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/DatabaseName.java b/java-spanner/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/DatabaseName.java
index eee6b1de1585..b51a9c6b900e 100644
--- a/java-spanner/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/DatabaseName.java
+++ b/java-spanner/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/DatabaseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatabaseName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_DATABASE =
diff --git a/java-spanner/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/SessionName.java b/java-spanner/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/SessionName.java
index a71cf0eac13d..4d9b6cdc33b1 100644
--- a/java-spanner/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/SessionName.java
+++ b/java-spanner/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/SessionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_DATABASE_SESSION =
diff --git a/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/AdapterClient.java b/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/AdapterClient.java
index 45462f1ed72e..03843dd28222 100644
--- a/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/AdapterClient.java
+++ b/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/AdapterClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdapterClient implements BackgroundResource {
   private final AdapterSettings settings;
diff --git a/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/AdapterSettings.java b/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/AdapterSettings.java
index 82aa06f3e0b2..af5c59b36898 100644
--- a/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/AdapterSettings.java
+++ b/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/AdapterSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdapterSettings extends ClientSettings<AdapterSettings> {
 
diff --git a/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/AdapterStub.java b/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/AdapterStub.java
index ab361bb90ab7..15d62483a9c5 100644
--- a/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/AdapterStub.java
+++ b/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/AdapterStub.java
@@ -24,6 +24,7 @@
 import com.google.spanner.adapter.v1.CreateSessionRequest;
 import com.google.spanner.adapter.v1.Session;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -31,6 +32,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AdapterStub implements BackgroundResource {
 
diff --git a/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/AdapterStubSettings.java b/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/AdapterStubSettings.java
index 13a82bd32c5a..7d99a6b0597f 100644
--- a/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/AdapterStubSettings.java
+++ b/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/AdapterStubSettings.java
@@ -49,6 +49,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -99,6 +100,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AdapterStubSettings extends StubSettings<AdapterStubSettings> {
diff --git a/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/GrpcAdapterCallableFactory.java b/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/GrpcAdapterCallableFactory.java
index 4c8b034489a0..84d05288b868 100644
--- a/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/GrpcAdapterCallableFactory.java
+++ b/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/GrpcAdapterCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAdapterCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/GrpcAdapterStub.java b/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/GrpcAdapterStub.java
index b9bfda863c4b..cfd89b13f407 100644
--- a/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/GrpcAdapterStub.java
+++ b/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/GrpcAdapterStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAdapterStub extends AdapterStub {
   private static final MethodDescriptor<CreateSessionRequest, Session>
diff --git a/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/HttpJsonAdapterCallableFactory.java b/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/HttpJsonAdapterCallableFactory.java
index a94e915de344..04a7f1d656ff 100644
--- a/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/HttpJsonAdapterCallableFactory.java
+++ b/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/HttpJsonAdapterCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAdapterCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/HttpJsonAdapterStub.java b/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/HttpJsonAdapterStub.java
index 950eebb47091..cc6acb649960 100644
--- a/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/HttpJsonAdapterStub.java
+++ b/java-spanneradapter/google-cloud-spanneradapter/src/main/java/com/google/spanner/adapter/v1/stub/HttpJsonAdapterStub.java
@@ -41,6 +41,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAdapterStub extends AdapterStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-spanneradapter/proto-google-cloud-spanneradapter-v1/src/main/java/com/google/spanner/adapter/v1/DatabaseName.java b/java-spanneradapter/proto-google-cloud-spanneradapter-v1/src/main/java/com/google/spanner/adapter/v1/DatabaseName.java
index 3f55f3fd1b9d..2f7438d83e79 100644
--- a/java-spanneradapter/proto-google-cloud-spanneradapter-v1/src/main/java/com/google/spanner/adapter/v1/DatabaseName.java
+++ b/java-spanneradapter/proto-google-cloud-spanneradapter-v1/src/main/java/com/google/spanner/adapter/v1/DatabaseName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatabaseName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_DATABASE =
diff --git a/java-spanneradapter/proto-google-cloud-spanneradapter-v1/src/main/java/com/google/spanner/adapter/v1/SessionName.java b/java-spanneradapter/proto-google-cloud-spanneradapter-v1/src/main/java/com/google/spanner/adapter/v1/SessionName.java
index 19a73026edec..0bb95986934d 100644
--- a/java-spanneradapter/proto-google-cloud-spanneradapter-v1/src/main/java/com/google/spanner/adapter/v1/SessionName.java
+++ b/java-spanneradapter/proto-google-cloud-spanneradapter-v1/src/main/java/com/google/spanner/adapter/v1/SessionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SessionName implements ResourceName {
   private static final PathTemplate PROJECT_INSTANCE_DATABASE_SESSION =
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/AdaptationClient.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/AdaptationClient.java
index a3a2278bfbf9..00362bbaccfa 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/AdaptationClient.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/AdaptationClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -309,6 +310,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdaptationClient implements BackgroundResource {
   private final AdaptationSettings settings;
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/AdaptationSettings.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/AdaptationSettings.java
index 27b71a8f13b8..49ed8372e3e7 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/AdaptationSettings.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/AdaptationSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdaptationSettings extends ClientSettings<AdaptationSettings> {
 
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/SpeechClient.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/SpeechClient.java
index 90354c5f62bf..9d76edd6e020 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/SpeechClient.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/SpeechClient.java
@@ -29,6 +29,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -160,6 +161,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpeechClient implements BackgroundResource {
   private final SpeechSettings settings;
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/SpeechSettings.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/SpeechSettings.java
index a7a853547932..454c7ad8fcec 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/SpeechSettings.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/SpeechSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpeechSettings extends ClientSettings<SpeechSettings> {
 
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/AdaptationStub.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/AdaptationStub.java
index 182b3a8ee890..9b38cc300cd0 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/AdaptationStub.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/AdaptationStub.java
@@ -37,6 +37,7 @@
 import com.google.cloud.speech.v1.UpdatePhraseSetRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AdaptationStub implements BackgroundResource {
 
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/AdaptationStubSettings.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/AdaptationStubSettings.java
index 410a81d16d4c..935a893fd586 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/AdaptationStubSettings.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/AdaptationStubSettings.java
@@ -68,6 +68,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AdaptationStubSettings extends StubSettings<AdaptationStubSettings> {
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/GrpcAdaptationCallableFactory.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/GrpcAdaptationCallableFactory.java
index 6b60ab0a2565..db1522a96ea3 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/GrpcAdaptationCallableFactory.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/GrpcAdaptationCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAdaptationCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/GrpcAdaptationStub.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/GrpcAdaptationStub.java
index f95890c08a1d..777e9bae6941 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/GrpcAdaptationStub.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/GrpcAdaptationStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAdaptationStub extends AdaptationStub {
   private static final MethodDescriptor<CreatePhraseSetRequest, PhraseSet>
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/GrpcSpeechCallableFactory.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/GrpcSpeechCallableFactory.java
index fcb3ceb0349d..3f41d737c966 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/GrpcSpeechCallableFactory.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/GrpcSpeechCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSpeechCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/GrpcSpeechStub.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/GrpcSpeechStub.java
index 12a581414c6c..1ae9851f7e7f 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/GrpcSpeechStub.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/GrpcSpeechStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSpeechStub extends SpeechStub {
   private static final MethodDescriptor<RecognizeRequest, RecognizeResponse>
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/HttpJsonAdaptationCallableFactory.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/HttpJsonAdaptationCallableFactory.java
index 5e8d3147a726..bb25e4b51c72 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/HttpJsonAdaptationCallableFactory.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/HttpJsonAdaptationCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAdaptationCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/HttpJsonAdaptationStub.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/HttpJsonAdaptationStub.java
index 5e54f3a00fd8..1a87e40dddf1 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/HttpJsonAdaptationStub.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/HttpJsonAdaptationStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAdaptationStub extends AdaptationStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/HttpJsonSpeechCallableFactory.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/HttpJsonSpeechCallableFactory.java
index f160e4b2e948..fb0760437e0d 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/HttpJsonSpeechCallableFactory.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/HttpJsonSpeechCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSpeechCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/HttpJsonSpeechStub.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/HttpJsonSpeechStub.java
index 684ee017a02f..49d20026fd89 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/HttpJsonSpeechStub.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/HttpJsonSpeechStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSpeechStub extends SpeechStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/SpeechStub.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/SpeechStub.java
index f590c2b5f23b..6e42b4bac0e7 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/SpeechStub.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/SpeechStub.java
@@ -30,6 +30,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SpeechStub implements BackgroundResource {
 
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/SpeechStubSettings.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/SpeechStubSettings.java
index 79334a95779b..65866a9115ae 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/SpeechStubSettings.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1/stub/SpeechStubSettings.java
@@ -57,6 +57,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SpeechStubSettings extends StubSettings<SpeechStubSettings> {
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/AdaptationClient.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/AdaptationClient.java
index 4fd05f609a41..9860b14e9b2c 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/AdaptationClient.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/AdaptationClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -310,6 +311,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AdaptationClient implements BackgroundResource {
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/AdaptationSettings.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/AdaptationSettings.java
index fbae48c95df4..2ab9ebd21291 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/AdaptationSettings.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/AdaptationSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class AdaptationSettings extends ClientSettings<AdaptationSettings> {
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/SpeechClient.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/SpeechClient.java
index bfa3c549e3a5..84b054855bd2 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/SpeechClient.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/SpeechClient.java
@@ -29,6 +29,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -160,6 +161,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SpeechClient implements BackgroundResource {
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/SpeechSettings.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/SpeechSettings.java
index 91e4437d8bbd..500ec7c27990 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/SpeechSettings.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/SpeechSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SpeechSettings extends ClientSettings<SpeechSettings> {
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/AdaptationStub.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/AdaptationStub.java
index ff4450075157..ff02b39a78e0 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/AdaptationStub.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/AdaptationStub.java
@@ -38,6 +38,7 @@
 import com.google.cloud.speech.v1p1beta1.UpdatePhraseSetRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class AdaptationStub implements BackgroundResource {
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/AdaptationStubSettings.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/AdaptationStubSettings.java
index 6d3b66eb01d2..65240e06c039 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/AdaptationStubSettings.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/AdaptationStubSettings.java
@@ -68,6 +68,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/GrpcAdaptationCallableFactory.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/GrpcAdaptationCallableFactory.java
index 192874b5c8b4..82bcc619a588 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/GrpcAdaptationCallableFactory.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/GrpcAdaptationCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAdaptationCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/GrpcAdaptationStub.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/GrpcAdaptationStub.java
index 3cb77f2d435a..efddb1a9e9e0 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/GrpcAdaptationStub.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/GrpcAdaptationStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcAdaptationStub extends AdaptationStub {
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/GrpcSpeechCallableFactory.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/GrpcSpeechCallableFactory.java
index 05faf0b2f1a4..fc6c11202795 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/GrpcSpeechCallableFactory.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/GrpcSpeechCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSpeechCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/GrpcSpeechStub.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/GrpcSpeechStub.java
index a16b1242e44f..24aa1f20ec6b 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/GrpcSpeechStub.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/GrpcSpeechStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSpeechStub extends SpeechStub {
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/HttpJsonAdaptationCallableFactory.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/HttpJsonAdaptationCallableFactory.java
index bc033880e7cd..7f0561b60c4e 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/HttpJsonAdaptationCallableFactory.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/HttpJsonAdaptationCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAdaptationCallableFactory
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/HttpJsonAdaptationStub.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/HttpJsonAdaptationStub.java
index e96f74b41aa0..b868409519fe 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/HttpJsonAdaptationStub.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/HttpJsonAdaptationStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonAdaptationStub extends AdaptationStub {
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/HttpJsonSpeechCallableFactory.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/HttpJsonSpeechCallableFactory.java
index da06bc81c7cb..5fd3567c13cd 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/HttpJsonSpeechCallableFactory.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/HttpJsonSpeechCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSpeechCallableFactory
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/HttpJsonSpeechStub.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/HttpJsonSpeechStub.java
index b7b0686d5a3b..8655014bbe3d 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/HttpJsonSpeechStub.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/HttpJsonSpeechStub.java
@@ -50,6 +50,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSpeechStub extends SpeechStub {
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/SpeechStub.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/SpeechStub.java
index 3e7c5a540a1c..246fef21f389 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/SpeechStub.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/SpeechStub.java
@@ -31,6 +31,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SpeechStub implements BackgroundResource {
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/SpeechStubSettings.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/SpeechStubSettings.java
index cd53046a4a38..c87b4998377f 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/SpeechStubSettings.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/SpeechStubSettings.java
@@ -57,6 +57,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/SpeechClient.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/SpeechClient.java
index 3631622607e3..244d557c9b18 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/SpeechClient.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/SpeechClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -598,6 +599,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpeechClient implements BackgroundResource {
   private final SpeechSettings settings;
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/SpeechSettings.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/SpeechSettings.java
index d04cda4327e2..f57c43df725f 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/SpeechSettings.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/SpeechSettings.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpeechSettings extends ClientSettings<SpeechSettings> {
 
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/GrpcSpeechCallableFactory.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/GrpcSpeechCallableFactory.java
index ead229413f90..7e9c4959766c 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/GrpcSpeechCallableFactory.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/GrpcSpeechCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSpeechCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/GrpcSpeechStub.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/GrpcSpeechStub.java
index 9c4367ca0d37..b751a76a9de1 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/GrpcSpeechStub.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/GrpcSpeechStub.java
@@ -75,6 +75,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSpeechStub extends SpeechStub {
   private static final MethodDescriptor<CreateRecognizerRequest, Operation>
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/HttpJsonSpeechCallableFactory.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/HttpJsonSpeechCallableFactory.java
index cfeda56323d2..b44d80634067 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/HttpJsonSpeechCallableFactory.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/HttpJsonSpeechCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSpeechCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/HttpJsonSpeechStub.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/HttpJsonSpeechStub.java
index 6d2369f6cd10..17481c629f5f 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/HttpJsonSpeechStub.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/HttpJsonSpeechStub.java
@@ -86,6 +86,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -93,6 +94,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSpeechStub extends SpeechStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/SpeechStub.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/SpeechStub.java
index b772d630afa4..724b41209dd7 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/SpeechStub.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/SpeechStub.java
@@ -66,6 +66,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SpeechStub implements BackgroundResource {
 
diff --git a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/SpeechStubSettings.java b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/SpeechStubSettings.java
index 073af0a298d9..480859481f26 100644
--- a/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/SpeechStubSettings.java
+++ b/java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/SpeechStubSettings.java
@@ -100,6 +100,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -175,6 +176,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SpeechStubSettings extends StubSettings<SpeechStubSettings> {
diff --git a/java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/CustomClassName.java b/java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/CustomClassName.java
index 681302131515..c01c7a321dfd 100644
--- a/java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/CustomClassName.java
+++ b/java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/CustomClassName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomClassName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CUSTOM_CLASS =
diff --git a/java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/LocationName.java b/java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/LocationName.java
index b068e2af6777..302132c00e3c 100644
--- a/java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/LocationName.java
+++ b/java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/PhraseSetName.java b/java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/PhraseSetName.java
index 511c1563ac67..b27bad800a04 100644
--- a/java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/PhraseSetName.java
+++ b/java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/PhraseSetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PhraseSetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PHRASE_SET =
diff --git a/java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/CustomClassName.java b/java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/CustomClassName.java
index c6b3f0d8d3ea..0d7767d0b624 100644
--- a/java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/CustomClassName.java
+++ b/java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/CustomClassName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomClassName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CUSTOM_CLASS =
diff --git a/java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/LocationName.java b/java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/LocationName.java
index 55486358e175..732f5d414f35 100644
--- a/java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/LocationName.java
+++ b/java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/PhraseSetName.java b/java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/PhraseSetName.java
index 9fb879a2ad1d..53fd1c2ca52a 100644
--- a/java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/PhraseSetName.java
+++ b/java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/PhraseSetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PhraseSetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PHRASE_SET =
diff --git a/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/ConfigName.java b/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/ConfigName.java
index 63cf54a939cd..f3ef755f366e 100644
--- a/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/ConfigName.java
+++ b/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/ConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/CustomClassName.java b/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/CustomClassName.java
index 5864f68f21ba..219d0dfc67a6 100644
--- a/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/CustomClassName.java
+++ b/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/CustomClassName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CustomClassName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CUSTOM_CLASS =
diff --git a/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/LocationName.java b/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/LocationName.java
index ff2e00d3e0ea..abae1ad92d52 100644
--- a/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/LocationName.java
+++ b/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/PhraseSetName.java b/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/PhraseSetName.java
index 0fe54792a2d8..023061c107e3 100644
--- a/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/PhraseSetName.java
+++ b/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/PhraseSetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PhraseSetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PHRASE_SET =
diff --git a/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/RecognizerName.java b/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/RecognizerName.java
index a76ae9e443aa..b9b22cc85296 100644
--- a/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/RecognizerName.java
+++ b/java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/RecognizerName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RecognizerName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RECOGNIZER =
diff --git a/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/StorageTransferServiceClient.java b/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/StorageTransferServiceClient.java
index 389fb04af402..2f26f9ec16e7 100644
--- a/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/StorageTransferServiceClient.java
+++ b/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/StorageTransferServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -353,6 +354,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StorageTransferServiceClient implements BackgroundResource {
   private final StorageTransferServiceSettings settings;
diff --git a/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/StorageTransferServiceSettings.java b/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/StorageTransferServiceSettings.java
index e9d5166b2d30..18441dc3b532 100644
--- a/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/StorageTransferServiceSettings.java
+++ b/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/StorageTransferServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StorageTransferServiceSettings extends ClientSettings<StorageTransferServiceSettings> {
 
diff --git a/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/GrpcStorageTransferServiceCallableFactory.java b/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/GrpcStorageTransferServiceCallableFactory.java
index 75834e93429a..c96772565147 100644
--- a/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/GrpcStorageTransferServiceCallableFactory.java
+++ b/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/GrpcStorageTransferServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcStorageTransferServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/GrpcStorageTransferServiceStub.java b/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/GrpcStorageTransferServiceStub.java
index c9a2aec1bcad..c7c87e769e3a 100644
--- a/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/GrpcStorageTransferServiceStub.java
+++ b/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/GrpcStorageTransferServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcStorageTransferServiceStub extends StorageTransferServiceStub {
   private static final MethodDescriptor<
diff --git a/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/HttpJsonStorageTransferServiceCallableFactory.java b/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/HttpJsonStorageTransferServiceCallableFactory.java
index c79c2f389d0a..9f1f3fc69148 100644
--- a/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/HttpJsonStorageTransferServiceCallableFactory.java
+++ b/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/HttpJsonStorageTransferServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonStorageTransferServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/HttpJsonStorageTransferServiceStub.java b/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/HttpJsonStorageTransferServiceStub.java
index 6a0ff5025557..8028e89ae934 100644
--- a/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/HttpJsonStorageTransferServiceStub.java
+++ b/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/HttpJsonStorageTransferServiceStub.java
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonStorageTransferServiceStub extends StorageTransferServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/StorageTransferServiceStub.java b/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/StorageTransferServiceStub.java
index 1404b0e556ca..e7740178547b 100644
--- a/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/StorageTransferServiceStub.java
+++ b/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/StorageTransferServiceStub.java
@@ -28,6 +28,7 @@
 import com.google.storagetransfer.v1.proto.TransferProto;
 import com.google.storagetransfer.v1.proto.TransferTypes;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class StorageTransferServiceStub implements BackgroundResource {
 
diff --git a/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/StorageTransferServiceStubSettings.java b/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/StorageTransferServiceStubSettings.java
index be69286bada0..6386fec7a165 100644
--- a/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/StorageTransferServiceStubSettings.java
+++ b/java-storage-transfer/google-cloud-storage-transfer/src/main/java/com/google/storagetransfer/v1/proto/stub/StorageTransferServiceStubSettings.java
@@ -62,6 +62,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class StorageTransferServiceStubSettings
diff --git a/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageClient.java b/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageClient.java
index fd46bdab8079..22e4afc530e4 100644
--- a/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageClient.java
+++ b/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -599,6 +600,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StorageClient implements BackgroundResource {
   private final StorageSettings settings;
diff --git a/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageSettings.java b/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageSettings.java
index 39158d843b94..d04844e57d63 100644
--- a/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageSettings.java
+++ b/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StorageSettings extends ClientSettings<StorageSettings> {
 
diff --git a/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/GrpcStorageCallableFactory.java b/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/GrpcStorageCallableFactory.java
index 272e2c8c22c6..423c5d864576 100644
--- a/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/GrpcStorageCallableFactory.java
+++ b/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/GrpcStorageCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcStorageCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/GrpcStorageStub.java b/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/GrpcStorageStub.java
index e06c2d2adf21..bd7bb21e4b83 100644
--- a/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/GrpcStorageStub.java
+++ b/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/GrpcStorageStub.java
@@ -75,6 +75,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcStorageStub extends StorageStub {
   private static final MethodDescriptor<DeleteBucketRequest, Empty> deleteBucketMethodDescriptor =
diff --git a/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/StorageStub.java b/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/StorageStub.java
index 2def7e8670a3..c2a35ed92d74 100644
--- a/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/StorageStub.java
+++ b/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/StorageStub.java
@@ -64,6 +64,7 @@
 import com.google.storage.v2.WriteObjectRequest;
 import com.google.storage.v2.WriteObjectResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class StorageStub implements BackgroundResource {
 
diff --git a/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/StorageStubSettings.java b/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/StorageStubSettings.java
index 04716bb73d6a..22890efd83e8 100644
--- a/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/StorageStubSettings.java
+++ b/java-storage/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/StorageStubSettings.java
@@ -91,6 +91,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class StorageStubSettings extends StubSettings<StorageStubSettings> {
diff --git a/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/StorageControlClient.java b/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/StorageControlClient.java
index a3f591cfa5d9..34562fce8f9a 100644
--- a/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/StorageControlClient.java
+++ b/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/StorageControlClient.java
@@ -44,6 +44,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -744,6 +745,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StorageControlClient implements BackgroundResource {
   private final StorageControlSettings settings;
diff --git a/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/StorageControlSettings.java b/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/StorageControlSettings.java
index 72d2a33f3cea..712042687c06 100644
--- a/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/StorageControlSettings.java
+++ b/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/StorageControlSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StorageControlSettings extends ClientSettings<StorageControlSettings> {
 
diff --git a/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/GrpcStorageControlCallableFactory.java b/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/GrpcStorageControlCallableFactory.java
index 61f4fd17b8c7..8b16bdc2dd97 100644
--- a/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/GrpcStorageControlCallableFactory.java
+++ b/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/GrpcStorageControlCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcStorageControlCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/GrpcStorageControlStub.java b/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/GrpcStorageControlStub.java
index 44d8533a67b8..5de4147ab7da 100644
--- a/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/GrpcStorageControlStub.java
+++ b/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/GrpcStorageControlStub.java
@@ -93,6 +93,7 @@
 import java.util.UUID;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -100,6 +101,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcStorageControlStub extends StorageControlStub {
   private static final MethodDescriptor<CreateFolderRequest, Folder> createFolderMethodDescriptor =
diff --git a/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/HttpJsonStorageControlCallableFactory.java b/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/HttpJsonStorageControlCallableFactory.java
index 2da1ee4034fd..ffffb4f96b7f 100644
--- a/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/HttpJsonStorageControlCallableFactory.java
+++ b/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/HttpJsonStorageControlCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonStorageControlCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/HttpJsonStorageControlStub.java b/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/HttpJsonStorageControlStub.java
index 3cc53ce740a0..52c4ef73b100 100644
--- a/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/HttpJsonStorageControlStub.java
+++ b/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/HttpJsonStorageControlStub.java
@@ -94,6 +94,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonStorageControlStub extends StorageControlStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/StorageControlStub.java b/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/StorageControlStub.java
index 71f05751148d..d40af60cc678 100644
--- a/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/StorageControlStub.java
+++ b/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/StorageControlStub.java
@@ -81,6 +81,7 @@
 import com.google.storage.control.v2.UpdateOrganizationIntelligenceConfigRequest;
 import com.google.storage.control.v2.UpdateProjectIntelligenceConfigRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class StorageControlStub implements BackgroundResource {
 
diff --git a/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/StorageControlStubSettings.java b/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/StorageControlStubSettings.java
index b935a9fe0bca..3769f49f3946 100644
--- a/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/StorageControlStubSettings.java
+++ b/java-storage/google-cloud-storage-control/src/main/java/com/google/storage/control/v2/stub/StorageControlStubSettings.java
@@ -116,6 +116,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -193,6 +194,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class StorageControlStubSettings extends StubSettings<StorageControlStubSettings> {
diff --git a/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/AnywhereCacheName.java b/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/AnywhereCacheName.java
index f56f02918761..ab81bc77997b 100644
--- a/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/AnywhereCacheName.java
+++ b/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/AnywhereCacheName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnywhereCacheName implements ResourceName {
   private static final PathTemplate PROJECT_BUCKET_ANYWHERE_CACHE =
diff --git a/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/BucketName.java b/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/BucketName.java
index 17822379adba..d89d68770f8f 100644
--- a/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/BucketName.java
+++ b/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/BucketName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BucketName implements ResourceName {
   private static final PathTemplate PROJECT_BUCKET =
diff --git a/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/FolderName.java b/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/FolderName.java
index 239b5fe061d5..8f02d9090599 100644
--- a/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/FolderName.java
+++ b/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/FolderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FolderName implements ResourceName {
   private static final PathTemplate PROJECT_BUCKET_FOLDER =
diff --git a/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/IntelligenceConfigName.java b/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/IntelligenceConfigName.java
index 24c1cef52d66..edb46ec36ae7 100644
--- a/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/IntelligenceConfigName.java
+++ b/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/IntelligenceConfigName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IntelligenceConfigName implements ResourceName {
   private static final PathTemplate FOLDER_LOCATION =
diff --git a/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/IntelligenceFindingName.java b/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/IntelligenceFindingName.java
index 55897b9f4477..03cbc7a02f8b 100644
--- a/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/IntelligenceFindingName.java
+++ b/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/IntelligenceFindingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IntelligenceFindingName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INTELLIGENCE_FINDING =
diff --git a/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/IntelligenceFindingRevisionName.java b/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/IntelligenceFindingRevisionName.java
index e119786a3bb0..6eac2a6ed223 100644
--- a/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/IntelligenceFindingRevisionName.java
+++ b/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/IntelligenceFindingRevisionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IntelligenceFindingRevisionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INTELLIGENCE_FINDING_REVISION =
diff --git a/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/LocationName.java b/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/LocationName.java
index d7fbc53f8bd2..de383b78faa9 100644
--- a/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/LocationName.java
+++ b/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/ManagedFolderName.java b/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/ManagedFolderName.java
index f5778809092b..409acde431d5 100644
--- a/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/ManagedFolderName.java
+++ b/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/ManagedFolderName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ManagedFolderName implements ResourceName {
   private static final PathTemplate PROJECT_BUCKET_MANAGED_FOLDER =
diff --git a/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/StorageLayoutName.java b/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/StorageLayoutName.java
index 5039f7ad4dce..932cb1c43397 100644
--- a/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/StorageLayoutName.java
+++ b/java-storage/proto-google-cloud-storage-control-v2/src/main/java/com/google/storage/control/v2/StorageLayoutName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StorageLayoutName implements ResourceName {
   private static final PathTemplate PROJECT_BUCKET =
diff --git a/java-storage/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/BucketName.java b/java-storage/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/BucketName.java
index 67619b665fdb..64f36d73175a 100644
--- a/java-storage/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/BucketName.java
+++ b/java-storage/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/BucketName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BucketName implements ResourceName {
   private static final PathTemplate PROJECT_BUCKET =
diff --git a/java-storage/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CryptoKeyName.java b/java-storage/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CryptoKeyName.java
index f10da50fb9e8..b9ccbab4b6fa 100644
--- a/java-storage/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CryptoKeyName.java
+++ b/java-storage/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CryptoKeyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CryptoKeyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_KEY_RING_CRYPTO_KEY =
diff --git a/java-storage/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ProjectName.java b/java-storage/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ProjectName.java
index 813ee0879415..790851e53aa8 100644
--- a/java-storage/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ProjectName.java
+++ b/java-storage/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/StorageBatchOperationsClient.java b/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/StorageBatchOperationsClient.java
index 912f3a059def..348533b9e9d7 100644
--- a/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/StorageBatchOperationsClient.java
+++ b/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/StorageBatchOperationsClient.java
@@ -41,6 +41,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -298,6 +299,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StorageBatchOperationsClient implements BackgroundResource {
   private final StorageBatchOperationsSettings settings;
diff --git a/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/StorageBatchOperationsSettings.java b/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/StorageBatchOperationsSettings.java
index 9d3fcb57cbbd..7c102bf15b55 100644
--- a/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/StorageBatchOperationsSettings.java
+++ b/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/StorageBatchOperationsSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StorageBatchOperationsSettings extends ClientSettings<StorageBatchOperationsSettings> {
 
diff --git a/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/GrpcStorageBatchOperationsCallableFactory.java b/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/GrpcStorageBatchOperationsCallableFactory.java
index f7ac9e64e5d4..6c2a8ae89290 100644
--- a/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/GrpcStorageBatchOperationsCallableFactory.java
+++ b/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/GrpcStorageBatchOperationsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcStorageBatchOperationsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/GrpcStorageBatchOperationsStub.java b/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/GrpcStorageBatchOperationsStub.java
index 175c4b69d978..f98bf47bc224 100644
--- a/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/GrpcStorageBatchOperationsStub.java
+++ b/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/GrpcStorageBatchOperationsStub.java
@@ -53,6 +53,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcStorageBatchOperationsStub extends StorageBatchOperationsStub {
   private static final MethodDescriptor<ListJobsRequest, ListJobsResponse>
diff --git a/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/HttpJsonStorageBatchOperationsCallableFactory.java b/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/HttpJsonStorageBatchOperationsCallableFactory.java
index 4a9e5f13211e..9ec5f705d20f 100644
--- a/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/HttpJsonStorageBatchOperationsCallableFactory.java
+++ b/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/HttpJsonStorageBatchOperationsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonStorageBatchOperationsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/HttpJsonStorageBatchOperationsStub.java b/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/HttpJsonStorageBatchOperationsStub.java
index 9fdb8ca10d78..055c6e0235c4 100644
--- a/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/HttpJsonStorageBatchOperationsStub.java
+++ b/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/HttpJsonStorageBatchOperationsStub.java
@@ -64,6 +64,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonStorageBatchOperationsStub extends StorageBatchOperationsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/StorageBatchOperationsStub.java b/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/StorageBatchOperationsStub.java
index a28b71f78ca4..96c1e4325cd0 100644
--- a/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/StorageBatchOperationsStub.java
+++ b/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/StorageBatchOperationsStub.java
@@ -44,6 +44,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class StorageBatchOperationsStub implements BackgroundResource {
 
diff --git a/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/StorageBatchOperationsStubSettings.java b/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/StorageBatchOperationsStubSettings.java
index cd9503d6f5dd..872b91c9c5f4 100644
--- a/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/StorageBatchOperationsStubSettings.java
+++ b/java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/StorageBatchOperationsStubSettings.java
@@ -78,6 +78,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -157,6 +158,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class StorageBatchOperationsStubSettings
diff --git a/java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/BucketOperationName.java b/java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/BucketOperationName.java
index c22fb663442d..6c3b2472d83e 100644
--- a/java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/BucketOperationName.java
+++ b/java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/BucketOperationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BucketOperationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_JOB_BUCKET_OPERATION =
diff --git a/java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/JobName.java b/java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/JobName.java
index 77d27b7b47ee..27b59e38f5da 100644
--- a/java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/JobName.java
+++ b/java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/JobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_JOB =
diff --git a/java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/LocationName.java b/java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/LocationName.java
index e20060a3c312..bee488272d0e 100644
--- a/java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/LocationName.java
+++ b/java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/StorageInsightsClient.java b/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/StorageInsightsClient.java
index bb8558346305..5a5159d7bc69 100644
--- a/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/StorageInsightsClient.java
+++ b/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/StorageInsightsClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -432,6 +433,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StorageInsightsClient implements BackgroundResource {
   private final StorageInsightsSettings settings;
diff --git a/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/StorageInsightsSettings.java b/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/StorageInsightsSettings.java
index b825ec002a8e..1abdc5543f89 100644
--- a/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/StorageInsightsSettings.java
+++ b/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/StorageInsightsSettings.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StorageInsightsSettings extends ClientSettings<StorageInsightsSettings> {
 
diff --git a/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/GrpcStorageInsightsCallableFactory.java b/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/GrpcStorageInsightsCallableFactory.java
index 507099eb34d3..b04179149f0b 100644
--- a/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/GrpcStorageInsightsCallableFactory.java
+++ b/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/GrpcStorageInsightsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcStorageInsightsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/GrpcStorageInsightsStub.java b/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/GrpcStorageInsightsStub.java
index 6c4aa7166828..8d4dc105a0e6 100644
--- a/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/GrpcStorageInsightsStub.java
+++ b/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/GrpcStorageInsightsStub.java
@@ -63,6 +63,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcStorageInsightsStub extends StorageInsightsStub {
   private static final MethodDescriptor<ListReportConfigsRequest, ListReportConfigsResponse>
diff --git a/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/HttpJsonStorageInsightsCallableFactory.java b/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/HttpJsonStorageInsightsCallableFactory.java
index 31ac3cbc73a8..dba9393df65c 100644
--- a/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/HttpJsonStorageInsightsCallableFactory.java
+++ b/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/HttpJsonStorageInsightsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonStorageInsightsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/HttpJsonStorageInsightsStub.java b/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/HttpJsonStorageInsightsStub.java
index ef3e35e1d39c..777b9594e850 100644
--- a/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/HttpJsonStorageInsightsStub.java
+++ b/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/HttpJsonStorageInsightsStub.java
@@ -74,6 +74,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonStorageInsightsStub extends StorageInsightsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/StorageInsightsStub.java b/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/StorageInsightsStub.java
index dece88327ae0..18621cf3aa1e 100644
--- a/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/StorageInsightsStub.java
+++ b/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/StorageInsightsStub.java
@@ -54,6 +54,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class StorageInsightsStub implements BackgroundResource {
 
diff --git a/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/StorageInsightsStubSettings.java b/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/StorageInsightsStubSettings.java
index 01ee59cf93e0..c7df974f7442 100644
--- a/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/StorageInsightsStubSettings.java
+++ b/java-storageinsights/google-cloud-storageinsights/src/main/java/com/google/cloud/storageinsights/v1/stub/StorageInsightsStubSettings.java
@@ -88,6 +88,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -166,6 +167,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class StorageInsightsStubSettings extends StubSettings<StorageInsightsStubSettings> {
diff --git a/java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/DatasetConfigName.java b/java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/DatasetConfigName.java
index d551d02872a8..17f4756a9bbe 100644
--- a/java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/DatasetConfigName.java
+++ b/java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/DatasetConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatasetConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET_CONFIG =
diff --git a/java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/LocationName.java b/java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/LocationName.java
index f74228c78457..f48021e4ab59 100644
--- a/java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/LocationName.java
+++ b/java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/ReportConfigName.java b/java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/ReportConfigName.java
index 413742ea5414..d8b23c7155b8 100644
--- a/java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/ReportConfigName.java
+++ b/java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/ReportConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReportConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPORT_CONFIG =
diff --git a/java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/ReportDetailName.java b/java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/ReportDetailName.java
index 1f1c8544ff10..0772bef79ce7 100644
--- a/java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/ReportDetailName.java
+++ b/java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/ReportDetailName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReportDetailName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_REPORT_CONFIG_REPORT_DETAIL =
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompanyServiceClient.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompanyServiceClient.java
index 8cc8a8b75466..026da64c87db 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompanyServiceClient.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompanyServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -214,6 +215,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompanyServiceClient implements BackgroundResource {
   private final CompanyServiceSettings settings;
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompanyServiceSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompanyServiceSettings.java
index 3336e43cb9f0..e3e8e4c0d3e3 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompanyServiceSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompanyServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompanyServiceSettings extends ClientSettings<CompanyServiceSettings> {
 
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompletionClient.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompletionClient.java
index 7e18088a5aab..d4139e9c98a8 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompletionClient.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompletionClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -128,6 +129,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompletionClient implements BackgroundResource {
   private final CompletionSettings settings;
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompletionSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompletionSettings.java
index b6a15c19d780..d0b94b7c7e34 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompletionSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompletionSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompletionSettings extends ClientSettings<CompletionSettings> {
 
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/EventServiceClient.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/EventServiceClient.java
index f52249c7603c..806d8fdf7666 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/EventServiceClient.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/EventServiceClient.java
@@ -23,6 +23,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EventServiceClient implements BackgroundResource {
   private final EventServiceSettings settings;
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/EventServiceSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/EventServiceSettings.java
index 4dcb029a858a..dc21081cfc0e 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/EventServiceSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/EventServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EventServiceSettings extends ClientSettings<EventServiceSettings> {
 
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/JobServiceClient.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/JobServiceClient.java
index 7f59e879b39d..81d6bfd4b758 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/JobServiceClient.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/JobServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -313,6 +314,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobServiceClient implements BackgroundResource {
   private final JobServiceSettings settings;
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/JobServiceSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/JobServiceSettings.java
index 2dbc60739334..5ebef3d23d5c 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/JobServiceSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/JobServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobServiceSettings extends ClientSettings<JobServiceSettings> {
 
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/TenantServiceClient.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/TenantServiceClient.java
index 9dafb3121c4d..e84b69375a39 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/TenantServiceClient.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/TenantServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -214,6 +215,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TenantServiceClient implements BackgroundResource {
   private final TenantServiceSettings settings;
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/TenantServiceSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/TenantServiceSettings.java
index ce43f98dacba..556115efc0aa 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/TenantServiceSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/TenantServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TenantServiceSettings extends ClientSettings<TenantServiceSettings> {
 
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompanyServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompanyServiceStub.java
index 637d5c3af090..79118cdb803a 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompanyServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompanyServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.talent.v4.UpdateCompanyRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CompanyServiceStub implements BackgroundResource {
 
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompanyServiceStubSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompanyServiceStubSettings.java
index 6f4e4d963989..a967acd47ca0 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompanyServiceStubSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompanyServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CompanyServiceStubSettings extends StubSettings<CompanyServiceStubSettings> {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompletionStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompletionStub.java
index 6cf93c9fcc00..e2065072596c 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompletionStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompletionStub.java
@@ -21,6 +21,7 @@
 import com.google.cloud.talent.v4.CompleteQueryRequest;
 import com.google.cloud.talent.v4.CompleteQueryResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CompletionStub implements BackgroundResource {
 
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompletionStubSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompletionStubSettings.java
index d24a08b450e9..44df936eca71 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompletionStubSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompletionStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -96,6 +97,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CompletionStubSettings extends StubSettings<CompletionStubSettings> {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/EventServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/EventServiceStub.java
index ec22ac1ce98e..addd59051686 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/EventServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/EventServiceStub.java
@@ -21,6 +21,7 @@
 import com.google.cloud.talent.v4.ClientEvent;
 import com.google.cloud.talent.v4.CreateClientEventRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -28,6 +29,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class EventServiceStub implements BackgroundResource {
 
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/EventServiceStubSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/EventServiceStubSettings.java
index e76123a49ab6..c9bae15c5a48 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/EventServiceStubSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/EventServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class EventServiceStubSettings extends StubSettings<EventServiceStubSettings> {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompanyServiceCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompanyServiceCallableFactory.java
index 8d86bcdf9395..4b8067ac493e 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompanyServiceCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompanyServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCompanyServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompanyServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompanyServiceStub.java
index 95aa74656df5..04665adc3c34 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompanyServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompanyServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCompanyServiceStub extends CompanyServiceStub {
   private static final MethodDescriptor<CreateCompanyRequest, Company>
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompletionCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompletionCallableFactory.java
index 6e6814772312..9e38ed01ea92 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompletionCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompletionCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCompletionCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompletionStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompletionStub.java
index 0d3b699305f1..ef760a3a99e9 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompletionStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompletionStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCompletionStub extends CompletionStub {
   private static final MethodDescriptor<CompleteQueryRequest, CompleteQueryResponse>
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcEventServiceCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcEventServiceCallableFactory.java
index ee32b511027f..49b4d153fcaa 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcEventServiceCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcEventServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEventServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcEventServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcEventServiceStub.java
index 2041d6c5adc5..5dae14708189 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcEventServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcEventServiceStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcEventServiceStub extends EventServiceStub {
   private static final MethodDescriptor<CreateClientEventRequest, ClientEvent>
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcJobServiceCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcJobServiceCallableFactory.java
index 38f465f87eb9..d653c2e01dc3 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcJobServiceCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcJobServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcJobServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcJobServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcJobServiceStub.java
index 22cbdccf75d9..1691a73d5b8d 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcJobServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcJobServiceStub.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcJobServiceStub extends JobServiceStub {
   private static final MethodDescriptor<CreateJobRequest, Job> createJobMethodDescriptor =
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcTenantServiceCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcTenantServiceCallableFactory.java
index dd2b61eee989..70135cd9204f 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcTenantServiceCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcTenantServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTenantServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcTenantServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcTenantServiceStub.java
index b03848fc35f8..41e0ac6a9513 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcTenantServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcTenantServiceStub.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTenantServiceStub extends TenantServiceStub {
   private static final MethodDescriptor<CreateTenantRequest, Tenant> createTenantMethodDescriptor =
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonCompanyServiceCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonCompanyServiceCallableFactory.java
index bdf37a121c17..78031a96b143 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonCompanyServiceCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonCompanyServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCompanyServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonCompanyServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonCompanyServiceStub.java
index 811ca76571ed..c86fd3630454 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonCompanyServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonCompanyServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCompanyServiceStub extends CompanyServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonCompletionCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonCompletionCallableFactory.java
index 64019a6dbf80..d31719f53ac7 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonCompletionCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonCompletionCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCompletionCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonCompletionStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonCompletionStub.java
index 1759548f207c..627f93b54952 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonCompletionStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonCompletionStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCompletionStub extends CompletionStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonEventServiceCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonEventServiceCallableFactory.java
index 326742c49a71..5f13d36340b5 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonEventServiceCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonEventServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEventServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonEventServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonEventServiceStub.java
index f912fd2bf39e..12ba90632786 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonEventServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonEventServiceStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonEventServiceStub extends EventServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonJobServiceCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonJobServiceCallableFactory.java
index fce93980c122..391e525119e6 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonJobServiceCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonJobServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonJobServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonJobServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonJobServiceStub.java
index 49d1df65f3d3..cec75b372839 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonJobServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonJobServiceStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonJobServiceStub extends JobServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonTenantServiceCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonTenantServiceCallableFactory.java
index a340525fadeb..49d27417ad7b 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonTenantServiceCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonTenantServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTenantServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonTenantServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonTenantServiceStub.java
index 8b4c62a210d1..ebebbd819d74 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonTenantServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/HttpJsonTenantServiceStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTenantServiceStub extends TenantServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/JobServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/JobServiceStub.java
index f1820a44d2f3..889236a27047 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/JobServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/JobServiceStub.java
@@ -41,6 +41,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class JobServiceStub implements BackgroundResource {
 
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/JobServiceStubSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/JobServiceStubSettings.java
index b9963c2e1a37..a0cfb4bf7258 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/JobServiceStubSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/JobServiceStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class JobServiceStubSettings extends StubSettings<JobServiceStubSettings> {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/TenantServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/TenantServiceStub.java
index ee48d8292420..8d82d943dc81 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/TenantServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/TenantServiceStub.java
@@ -29,6 +29,7 @@
 import com.google.cloud.talent.v4.UpdateTenantRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -36,6 +37,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TenantServiceStub implements BackgroundResource {
 
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/TenantServiceStubSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/TenantServiceStubSettings.java
index bc09da1c5976..1aa42e9465b6 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/TenantServiceStubSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/TenantServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TenantServiceStubSettings extends StubSettings<TenantServiceStubSettings> {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompanyServiceClient.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompanyServiceClient.java
index dc52e45ce432..189a117ad4cf 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompanyServiceClient.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompanyServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -216,6 +217,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CompanyServiceClient implements BackgroundResource {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompanyServiceSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompanyServiceSettings.java
index 8a9d70fec554..5e8bb448f5d8 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompanyServiceSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompanyServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -86,6 +87,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CompanyServiceSettings extends ClientSettings<CompanyServiceSettings> {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompletionClient.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompletionClient.java
index c43697345aac..5d3acad7a3ee 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompletionClient.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompletionClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CompletionClient implements BackgroundResource {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompletionSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompletionSettings.java
index e96fae971bf8..9e33cdc7906c 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompletionSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompletionSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CompletionSettings extends ClientSettings<CompletionSettings> {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/EventServiceClient.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/EventServiceClient.java
index 8bd287ca45c6..15526fde65ca 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/EventServiceClient.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/EventServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EventServiceClient implements BackgroundResource {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/EventServiceSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/EventServiceSettings.java
index 88e058d8c6d3..f7ca25d3cfe2 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/EventServiceSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/EventServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class EventServiceSettings extends ClientSettings<EventServiceSettings> {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/JobServiceClient.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/JobServiceClient.java
index a034cb5bf1fd..a14d1bc85e05 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/JobServiceClient.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/JobServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -318,6 +319,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class JobServiceClient implements BackgroundResource {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/JobServiceSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/JobServiceSettings.java
index c9e62187882a..9572918f70a3 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/JobServiceSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/JobServiceSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class JobServiceSettings extends ClientSettings<JobServiceSettings> {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/TenantServiceClient.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/TenantServiceClient.java
index 3804b1de037f..31a371572b1f 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/TenantServiceClient.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/TenantServiceClient.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -214,6 +215,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TenantServiceClient implements BackgroundResource {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/TenantServiceSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/TenantServiceSettings.java
index efeb18aece36..fd9ccd4ba7de 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/TenantServiceSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/TenantServiceSettings.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TenantServiceSettings extends ClientSettings<TenantServiceSettings> {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompanyServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompanyServiceStub.java
index 9cd9d32b6907..e9a4f2c9a237 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompanyServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompanyServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.talent.v4beta1.UpdateCompanyRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CompanyServiceStub implements BackgroundResource {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompanyServiceStubSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompanyServiceStubSettings.java
index 6855d4e66b24..d9049b16d3ed 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompanyServiceStubSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompanyServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompletionStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompletionStub.java
index 8af86c760e6d..f420b99b93e4 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompletionStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompletionStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.talent.v4beta1.CompleteQueryRequest;
 import com.google.cloud.talent.v4beta1.CompleteQueryResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CompletionStub implements BackgroundResource {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompletionStubSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompletionStubSettings.java
index b40a9db8f775..c2854f54b3ab 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompletionStubSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompletionStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -96,6 +97,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/EventServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/EventServiceStub.java
index 481873cc5f92..1771eafd89a6 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/EventServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/EventServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.talent.v4beta1.ClientEvent;
 import com.google.cloud.talent.v4beta1.CreateClientEventRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class EventServiceStub implements BackgroundResource {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/EventServiceStubSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/EventServiceStubSettings.java
index 81d760d3c43d..3e245b83f131 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/EventServiceStubSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/EventServiceStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompanyServiceCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompanyServiceCallableFactory.java
index 5fe722247670..292c447b7a73 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompanyServiceCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompanyServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCompanyServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompanyServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompanyServiceStub.java
index 739550a6ff61..5f977d5fb69d 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompanyServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompanyServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCompanyServiceStub extends CompanyServiceStub {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompletionCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompletionCallableFactory.java
index 1c501eb3f840..43f31207719e 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompletionCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompletionCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCompletionCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompletionStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompletionStub.java
index a153bd42a528..3422c262e345 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompletionStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompletionStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCompletionStub extends CompletionStub {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcEventServiceCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcEventServiceCallableFactory.java
index d76212cbc04c..8c53939e0276 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcEventServiceCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcEventServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEventServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcEventServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcEventServiceStub.java
index 361f8c2647e8..6aec138150cb 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcEventServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcEventServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcEventServiceStub extends EventServiceStub {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcJobServiceCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcJobServiceCallableFactory.java
index 5c27f2c6bf3f..8428bf8f08e3 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcJobServiceCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcJobServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcJobServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcJobServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcJobServiceStub.java
index 379ec4ffa106..e57959405107 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcJobServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcJobServiceStub.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcJobServiceStub extends JobServiceStub {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcTenantServiceCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcTenantServiceCallableFactory.java
index 3299d3cf2be9..66f803497563 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcTenantServiceCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcTenantServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTenantServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcTenantServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcTenantServiceStub.java
index 1e63ff294ba8..ee5a11a415d8 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcTenantServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcTenantServiceStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTenantServiceStub extends TenantServiceStub {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonCompanyServiceCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonCompanyServiceCallableFactory.java
index 411d1d11e2dc..edaaeebe5094 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonCompanyServiceCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonCompanyServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCompanyServiceCallableFactory
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonCompanyServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonCompanyServiceStub.java
index 0254303243ac..717340ff0451 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonCompanyServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonCompanyServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCompanyServiceStub extends CompanyServiceStub {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonCompletionCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonCompletionCallableFactory.java
index 87712dfaab99..f0c6ef8dbdc1 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonCompletionCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonCompletionCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCompletionCallableFactory
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonCompletionStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonCompletionStub.java
index 746cbc8d76ff..6600a41bd574 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonCompletionStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonCompletionStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCompletionStub extends CompletionStub {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonEventServiceCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonEventServiceCallableFactory.java
index 46b3fb6797f2..b93dc9526dc6 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonEventServiceCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonEventServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEventServiceCallableFactory
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonEventServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonEventServiceStub.java
index 5e0c3007d72b..8f6f8501e3a4 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonEventServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonEventServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonEventServiceStub extends EventServiceStub {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonJobServiceCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonJobServiceCallableFactory.java
index 859f0d6bbd89..f6eb0a49a25f 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonJobServiceCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonJobServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonJobServiceCallableFactory
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonJobServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonJobServiceStub.java
index b8ef907b7fe6..87601b6b72a8 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonJobServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonJobServiceStub.java
@@ -62,6 +62,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonJobServiceStub extends JobServiceStub {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonTenantServiceCallableFactory.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonTenantServiceCallableFactory.java
index 3a15165f610f..fc39c7d7abc1 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonTenantServiceCallableFactory.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonTenantServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTenantServiceCallableFactory
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonTenantServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonTenantServiceStub.java
index f6f95b4bfc2f..1abc3e6a7c71 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonTenantServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/HttpJsonTenantServiceStub.java
@@ -47,6 +47,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTenantServiceStub extends TenantServiceStub {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/JobServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/JobServiceStub.java
index 7ed485490b33..534a8eb06b54 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/JobServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/JobServiceStub.java
@@ -42,6 +42,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class JobServiceStub implements BackgroundResource {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/JobServiceStubSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/JobServiceStubSettings.java
index 6f5817b3f665..9b68822b4c75 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/JobServiceStubSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/JobServiceStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/TenantServiceStub.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/TenantServiceStub.java
index 8c5d9289244a..8cc643cf7c9e 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/TenantServiceStub.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/TenantServiceStub.java
@@ -30,6 +30,7 @@
 import com.google.cloud.talent.v4beta1.UpdateTenantRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -37,6 +38,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class TenantServiceStub implements BackgroundResource {
diff --git a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/TenantServiceStubSettings.java b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/TenantServiceStubSettings.java
index 14927be99d81..862c3340127d 100644
--- a/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/TenantServiceStubSettings.java
+++ b/java-talent/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/TenantServiceStubSettings.java
@@ -61,6 +61,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/CompanyName.java b/java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/CompanyName.java
index 31eccfcc033e..5f38abfc235b 100644
--- a/java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/CompanyName.java
+++ b/java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/CompanyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompanyName implements ResourceName {
   private static final PathTemplate PROJECT_TENANT_COMPANY =
diff --git a/java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/JobName.java b/java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/JobName.java
index 8137702fe0b1..166ad7c75d2e 100644
--- a/java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/JobName.java
+++ b/java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/JobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobName implements ResourceName {
   private static final PathTemplate PROJECT_TENANT_JOB =
diff --git a/java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/ProjectName.java b/java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/ProjectName.java
index d3d3faa68b91..b79618e42679 100644
--- a/java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/ProjectName.java
+++ b/java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/TenantName.java b/java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/TenantName.java
index 2f3d7b37480b..259d3be0833e 100644
--- a/java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/TenantName.java
+++ b/java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/TenantName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TenantName implements ResourceName {
   private static final PathTemplate PROJECT_TENANT =
diff --git a/java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/CompanyName.java b/java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/CompanyName.java
index 7e58a2ed8d76..0770bc31a800 100644
--- a/java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/CompanyName.java
+++ b/java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/CompanyName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CompanyName implements ResourceName {
   private static final PathTemplate PROJECT_TENANT_COMPANY =
diff --git a/java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/JobName.java b/java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/JobName.java
index f9ab2a70b075..6da67135ab31 100644
--- a/java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/JobName.java
+++ b/java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/JobName.java
@@ -26,8 +26,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobName implements ResourceName {
   private static final PathTemplate PROJECT_TENANT_JOB =
diff --git a/java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/ProjectName.java b/java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/ProjectName.java
index 4967f6fa085b..ef4215ea200c 100644
--- a/java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/ProjectName.java
+++ b/java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/TenantName.java b/java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/TenantName.java
index f2b3687807c5..f763c55de5c0 100644
--- a/java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/TenantName.java
+++ b/java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/TenantName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TenantName implements ResourceName {
   private static final PathTemplate PROJECT_TENANT =
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/CloudTasksClient.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/CloudTasksClient.java
index ae5e63a405e7..68e33111243e 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/CloudTasksClient.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/CloudTasksClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -498,6 +499,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudTasksClient implements BackgroundResource {
   private final CloudTasksSettings settings;
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/CloudTasksSettings.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/CloudTasksSettings.java
index 1c42cbf760a8..0ad07976ef91 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/CloudTasksSettings.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/CloudTasksSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -96,6 +97,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloudTasksSettings extends ClientSettings<CloudTasksSettings> {
 
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/CloudTasksStub.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/CloudTasksStub.java
index 26a666702b73..ecdaee12fc0e 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/CloudTasksStub.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/CloudTasksStub.java
@@ -50,6 +50,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class CloudTasksStub implements BackgroundResource {
 
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/CloudTasksStubSettings.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/CloudTasksStubSettings.java
index 08c117fe3641..846ef3d0c41a 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/CloudTasksStubSettings.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/CloudTasksStubSettings.java
@@ -82,6 +82,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class CloudTasksStubSettings extends StubSettings<CloudTasksStubSettings> {
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/GrpcCloudTasksCallableFactory.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/GrpcCloudTasksCallableFactory.java
index b16421bc85c6..eb79fa35056b 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/GrpcCloudTasksCallableFactory.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/GrpcCloudTasksCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudTasksCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/GrpcCloudTasksStub.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/GrpcCloudTasksStub.java
index bac410fd4b25..e9f879946bd2 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/GrpcCloudTasksStub.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/GrpcCloudTasksStub.java
@@ -60,6 +60,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -67,6 +68,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcCloudTasksStub extends CloudTasksStub {
   private static final MethodDescriptor<ListQueuesRequest, ListQueuesResponse>
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/HttpJsonCloudTasksCallableFactory.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/HttpJsonCloudTasksCallableFactory.java
index 542bd1a3bbfb..7ddd75c857bd 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/HttpJsonCloudTasksCallableFactory.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/HttpJsonCloudTasksCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudTasksCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/HttpJsonCloudTasksStub.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/HttpJsonCloudTasksStub.java
index d9194842b6ff..6f36931f2ca8 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/HttpJsonCloudTasksStub.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2/stub/HttpJsonCloudTasksStub.java
@@ -67,6 +67,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudTasksStub extends CloudTasksStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/CloudTasksClient.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/CloudTasksClient.java
index 32eacc66e50d..a0a9e9a1bf2c 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/CloudTasksClient.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/CloudTasksClient.java
@@ -46,6 +46,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -601,6 +602,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudTasksClient implements BackgroundResource {
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/CloudTasksSettings.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/CloudTasksSettings.java
index 65cdf8f3e3ec..abbd8c60f84b 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/CloudTasksSettings.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/CloudTasksSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -96,6 +97,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudTasksSettings extends ClientSettings<CloudTasksSettings> {
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/CloudTasksStub.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/CloudTasksStub.java
index f0eca9556946..11176cb44f9f 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/CloudTasksStub.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/CloudTasksStub.java
@@ -57,6 +57,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CloudTasksStub implements BackgroundResource {
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/CloudTasksStubSettings.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/CloudTasksStubSettings.java
index cd10cb53c4da..ef3c9a1dd867 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/CloudTasksStubSettings.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/CloudTasksStubSettings.java
@@ -88,6 +88,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -138,6 +139,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/GrpcCloudTasksCallableFactory.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/GrpcCloudTasksCallableFactory.java
index 71952b100c91..3ccb794b1402 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/GrpcCloudTasksCallableFactory.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/GrpcCloudTasksCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudTasksCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/GrpcCloudTasksStub.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/GrpcCloudTasksStub.java
index cd2738ce2ec6..9cbc2ed6be61 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/GrpcCloudTasksStub.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/GrpcCloudTasksStub.java
@@ -67,6 +67,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -74,6 +75,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudTasksStub extends CloudTasksStub {
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/HttpJsonCloudTasksCallableFactory.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/HttpJsonCloudTasksCallableFactory.java
index b9daf64cb3d0..d91a6aeaeecb 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/HttpJsonCloudTasksCallableFactory.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/HttpJsonCloudTasksCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudTasksCallableFactory
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/HttpJsonCloudTasksStub.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/HttpJsonCloudTasksStub.java
index fa41b715fcb0..550163314710 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/HttpJsonCloudTasksStub.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/stub/HttpJsonCloudTasksStub.java
@@ -74,6 +74,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudTasksStub extends CloudTasksStub {
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/CloudTasksClient.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/CloudTasksClient.java
index 9fef6ab76f07..24b65cf98ba9 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/CloudTasksClient.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/CloudTasksClient.java
@@ -44,6 +44,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -499,6 +500,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudTasksClient implements BackgroundResource {
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/CloudTasksSettings.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/CloudTasksSettings.java
index 22e29bb0bf1f..8eb075a2c019 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/CloudTasksSettings.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/CloudTasksSettings.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -96,6 +97,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class CloudTasksSettings extends ClientSettings<CloudTasksSettings> {
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/CloudTasksStub.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/CloudTasksStub.java
index 4635124bf9d9..0c7e79faf8f2 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/CloudTasksStub.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/CloudTasksStub.java
@@ -51,6 +51,7 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class CloudTasksStub implements BackgroundResource {
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/CloudTasksStubSettings.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/CloudTasksStubSettings.java
index cf22b3d4f765..49a3af70bb92 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/CloudTasksStubSettings.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/CloudTasksStubSettings.java
@@ -82,6 +82,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/GrpcCloudTasksCallableFactory.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/GrpcCloudTasksCallableFactory.java
index 7914aa949143..31c46a0dcab9 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/GrpcCloudTasksCallableFactory.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/GrpcCloudTasksCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudTasksCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/GrpcCloudTasksStub.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/GrpcCloudTasksStub.java
index b51200d890a6..7bb51f2339a0 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/GrpcCloudTasksStub.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/GrpcCloudTasksStub.java
@@ -61,6 +61,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcCloudTasksStub extends CloudTasksStub {
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/HttpJsonCloudTasksCallableFactory.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/HttpJsonCloudTasksCallableFactory.java
index 382591ecc0c6..323ebc412485 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/HttpJsonCloudTasksCallableFactory.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/HttpJsonCloudTasksCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudTasksCallableFactory
diff --git a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/HttpJsonCloudTasksStub.java b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/HttpJsonCloudTasksStub.java
index d042d98aa685..95f167f4c008 100644
--- a/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/HttpJsonCloudTasksStub.java
+++ b/java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/HttpJsonCloudTasksStub.java
@@ -68,6 +68,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonCloudTasksStub extends CloudTasksStub {
diff --git a/java-tasks/proto-google-cloud-tasks-v2/src/main/java/com/google/cloud/tasks/v2/LocationName.java b/java-tasks/proto-google-cloud-tasks-v2/src/main/java/com/google/cloud/tasks/v2/LocationName.java
index d538850feb9d..f66bc27dc736 100644
--- a/java-tasks/proto-google-cloud-tasks-v2/src/main/java/com/google/cloud/tasks/v2/LocationName.java
+++ b/java-tasks/proto-google-cloud-tasks-v2/src/main/java/com/google/cloud/tasks/v2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-tasks/proto-google-cloud-tasks-v2/src/main/java/com/google/cloud/tasks/v2/QueueName.java b/java-tasks/proto-google-cloud-tasks-v2/src/main/java/com/google/cloud/tasks/v2/QueueName.java
index 9f3907897763..26671411e7a7 100644
--- a/java-tasks/proto-google-cloud-tasks-v2/src/main/java/com/google/cloud/tasks/v2/QueueName.java
+++ b/java-tasks/proto-google-cloud-tasks-v2/src/main/java/com/google/cloud/tasks/v2/QueueName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QueueName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_QUEUE =
diff --git a/java-tasks/proto-google-cloud-tasks-v2/src/main/java/com/google/cloud/tasks/v2/TaskName.java b/java-tasks/proto-google-cloud-tasks-v2/src/main/java/com/google/cloud/tasks/v2/TaskName.java
index e3714df8febf..6ca2b781b428 100644
--- a/java-tasks/proto-google-cloud-tasks-v2/src/main/java/com/google/cloud/tasks/v2/TaskName.java
+++ b/java-tasks/proto-google-cloud-tasks-v2/src/main/java/com/google/cloud/tasks/v2/TaskName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TaskName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_QUEUE_TASK =
diff --git a/java-tasks/proto-google-cloud-tasks-v2beta2/src/main/java/com/google/cloud/tasks/v2beta2/LocationName.java b/java-tasks/proto-google-cloud-tasks-v2beta2/src/main/java/com/google/cloud/tasks/v2beta2/LocationName.java
index d669d683b3d7..f7a93390d5b1 100644
--- a/java-tasks/proto-google-cloud-tasks-v2beta2/src/main/java/com/google/cloud/tasks/v2beta2/LocationName.java
+++ b/java-tasks/proto-google-cloud-tasks-v2beta2/src/main/java/com/google/cloud/tasks/v2beta2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-tasks/proto-google-cloud-tasks-v2beta2/src/main/java/com/google/cloud/tasks/v2beta2/QueueName.java b/java-tasks/proto-google-cloud-tasks-v2beta2/src/main/java/com/google/cloud/tasks/v2beta2/QueueName.java
index 98954e969a1c..8af9af540bdf 100644
--- a/java-tasks/proto-google-cloud-tasks-v2beta2/src/main/java/com/google/cloud/tasks/v2beta2/QueueName.java
+++ b/java-tasks/proto-google-cloud-tasks-v2beta2/src/main/java/com/google/cloud/tasks/v2beta2/QueueName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QueueName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_QUEUE =
diff --git a/java-tasks/proto-google-cloud-tasks-v2beta2/src/main/java/com/google/cloud/tasks/v2beta2/TaskName.java b/java-tasks/proto-google-cloud-tasks-v2beta2/src/main/java/com/google/cloud/tasks/v2beta2/TaskName.java
index 6015346a8cc5..3dfef567c599 100644
--- a/java-tasks/proto-google-cloud-tasks-v2beta2/src/main/java/com/google/cloud/tasks/v2beta2/TaskName.java
+++ b/java-tasks/proto-google-cloud-tasks-v2beta2/src/main/java/com/google/cloud/tasks/v2beta2/TaskName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TaskName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_QUEUE_TASK =
diff --git a/java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/LocationName.java b/java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/LocationName.java
index 731aeee52b9c..8e0e37fcaa84 100644
--- a/java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/LocationName.java
+++ b/java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/QueueName.java b/java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/QueueName.java
index 1bd9d529ebac..0026adcd0aa0 100644
--- a/java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/QueueName.java
+++ b/java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/QueueName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QueueName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_QUEUE =
diff --git a/java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/TaskName.java b/java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/TaskName.java
index a8b73fab5d4f..a64d201874ac 100644
--- a/java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/TaskName.java
+++ b/java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/TaskName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TaskName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_QUEUE_TASK =
diff --git a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/TelcoAutomationClient.java b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/TelcoAutomationClient.java
index 4be7d74f6ca5..f27cbdb89953 100644
--- a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/TelcoAutomationClient.java
+++ b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/TelcoAutomationClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -859,6 +860,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TelcoAutomationClient implements BackgroundResource {
   private final TelcoAutomationSettings settings;
diff --git a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/TelcoAutomationSettings.java b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/TelcoAutomationSettings.java
index e31d50b6f4ec..54ef791049ab 100644
--- a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/TelcoAutomationSettings.java
+++ b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/TelcoAutomationSettings.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TelcoAutomationSettings extends ClientSettings<TelcoAutomationSettings> {
 
diff --git a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/GrpcTelcoAutomationCallableFactory.java b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/GrpcTelcoAutomationCallableFactory.java
index d498a29bd046..3107f3baba32 100644
--- a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/GrpcTelcoAutomationCallableFactory.java
+++ b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/GrpcTelcoAutomationCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTelcoAutomationCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/GrpcTelcoAutomationStub.java b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/GrpcTelcoAutomationStub.java
index b70569e6c6fd..fea0430ee8ce 100644
--- a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/GrpcTelcoAutomationStub.java
+++ b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/GrpcTelcoAutomationStub.java
@@ -104,6 +104,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTelcoAutomationStub extends TelcoAutomationStub {
   private static final MethodDescriptor<
diff --git a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/HttpJsonTelcoAutomationCallableFactory.java b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/HttpJsonTelcoAutomationCallableFactory.java
index faae73ea0cad..5e292d15eb8b 100644
--- a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/HttpJsonTelcoAutomationCallableFactory.java
+++ b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/HttpJsonTelcoAutomationCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTelcoAutomationCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/HttpJsonTelcoAutomationStub.java b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/HttpJsonTelcoAutomationStub.java
index 04ebd703efaa..a42d75def195 100644
--- a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/HttpJsonTelcoAutomationStub.java
+++ b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/HttpJsonTelcoAutomationStub.java
@@ -115,6 +115,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTelcoAutomationStub extends TelcoAutomationStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/TelcoAutomationStub.java b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/TelcoAutomationStub.java
index 09b939963b40..2892f5623421 100644
--- a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/TelcoAutomationStub.java
+++ b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/TelcoAutomationStub.java
@@ -95,6 +95,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TelcoAutomationStub implements BackgroundResource {
 
diff --git a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/TelcoAutomationStubSettings.java b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/TelcoAutomationStubSettings.java
index 292522b8f080..c17e0beddb24 100644
--- a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/TelcoAutomationStubSettings.java
+++ b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/TelcoAutomationStubSettings.java
@@ -129,6 +129,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -207,6 +208,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TelcoAutomationStubSettings extends StubSettings<TelcoAutomationStubSettings> {
diff --git a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/TelcoAutomationClient.java b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/TelcoAutomationClient.java
index 62d5acc530ec..284cbe7a98d1 100644
--- a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/TelcoAutomationClient.java
+++ b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/TelcoAutomationClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -859,6 +860,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TelcoAutomationClient implements BackgroundResource {
diff --git a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/TelcoAutomationSettings.java b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/TelcoAutomationSettings.java
index b8f637f784a6..02842b4df1d4 100644
--- a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/TelcoAutomationSettings.java
+++ b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/TelcoAutomationSettings.java
@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TelcoAutomationSettings extends ClientSettings<TelcoAutomationSettings> {
diff --git a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/GrpcTelcoAutomationCallableFactory.java b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/GrpcTelcoAutomationCallableFactory.java
index 68a7bb4b8a82..33f1ad7dcfcc 100644
--- a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/GrpcTelcoAutomationCallableFactory.java
+++ b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/GrpcTelcoAutomationCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTelcoAutomationCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/GrpcTelcoAutomationStub.java b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/GrpcTelcoAutomationStub.java
index 6f7d1f7f0610..0aaa756dc2b5 100644
--- a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/GrpcTelcoAutomationStub.java
+++ b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/GrpcTelcoAutomationStub.java
@@ -105,6 +105,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTelcoAutomationStub extends TelcoAutomationStub {
diff --git a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/HttpJsonTelcoAutomationCallableFactory.java b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/HttpJsonTelcoAutomationCallableFactory.java
index 35990bb10038..873437cca023 100644
--- a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/HttpJsonTelcoAutomationCallableFactory.java
+++ b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/HttpJsonTelcoAutomationCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTelcoAutomationCallableFactory
diff --git a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/HttpJsonTelcoAutomationStub.java b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/HttpJsonTelcoAutomationStub.java
index 8ec577ad0d21..2e89df6d1833 100644
--- a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/HttpJsonTelcoAutomationStub.java
+++ b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/HttpJsonTelcoAutomationStub.java
@@ -116,6 +116,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTelcoAutomationStub extends TelcoAutomationStub {
diff --git a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/TelcoAutomationStub.java b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/TelcoAutomationStub.java
index 4af9b3da59d9..40f9b77be246 100644
--- a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/TelcoAutomationStub.java
+++ b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/TelcoAutomationStub.java
@@ -96,6 +96,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class TelcoAutomationStub implements BackgroundResource {
diff --git a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/TelcoAutomationStubSettings.java b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/TelcoAutomationStubSettings.java
index 7328c1268832..257fe23d30e4 100644
--- a/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/TelcoAutomationStubSettings.java
+++ b/java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1alpha1/stub/TelcoAutomationStubSettings.java
@@ -129,6 +129,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -207,6 +208,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/BlueprintName.java b/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/BlueprintName.java
index 60718d050a5e..6a911061a096 100644
--- a/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/BlueprintName.java
+++ b/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/BlueprintName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BlueprintName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ORCHESTRATION_CLUSTER_BLUEPRINT =
diff --git a/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/DeploymentName.java b/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/DeploymentName.java
index b34252e8286b..39da170d323c 100644
--- a/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/DeploymentName.java
+++ b/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/DeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ORCHESTRATION_CLUSTER_DEPLOYMENT =
diff --git a/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/EdgeSlmName.java b/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/EdgeSlmName.java
index 812b01e354ac..5497d07d7ecf 100644
--- a/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/EdgeSlmName.java
+++ b/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/EdgeSlmName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EdgeSlmName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_EDGE_SLM =
diff --git a/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/HydratedDeploymentName.java b/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/HydratedDeploymentName.java
index 528b7548967c..100452fdcbaf 100644
--- a/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/HydratedDeploymentName.java
+++ b/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/HydratedDeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HydratedDeploymentName implements ResourceName {
   private static final PathTemplate
diff --git a/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/LocationName.java b/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/LocationName.java
index d5f5ec0fba90..929c2c2c4377 100644
--- a/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/LocationName.java
+++ b/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/OrchestrationClusterName.java b/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/OrchestrationClusterName.java
index 979d3c7c8c0a..1bd62be04579 100644
--- a/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/OrchestrationClusterName.java
+++ b/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/OrchestrationClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrchestrationClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ORCHESTRATION_CLUSTER =
diff --git a/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/PublicBlueprintName.java b/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/PublicBlueprintName.java
index da0e5fdc0187..ba82ebc09c16 100644
--- a/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/PublicBlueprintName.java
+++ b/java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/PublicBlueprintName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PublicBlueprintName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PUBLIC_LUEPRINT =
diff --git a/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/BlueprintName.java b/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/BlueprintName.java
index db4c055a8d95..b8f684e2c0b8 100644
--- a/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/BlueprintName.java
+++ b/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/BlueprintName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BlueprintName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ORCHESTRATION_CLUSTER_BLUEPRINT =
diff --git a/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/DeploymentName.java b/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/DeploymentName.java
index b18780713979..19d517a370b1 100644
--- a/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/DeploymentName.java
+++ b/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/DeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DeploymentName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ORCHESTRATION_CLUSTER_DEPLOYMENT =
diff --git a/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/EdgeSlmName.java b/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/EdgeSlmName.java
index 9ff1eef7bd6a..92693b7c3b2c 100644
--- a/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/EdgeSlmName.java
+++ b/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/EdgeSlmName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EdgeSlmName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_EDGE_SLM =
diff --git a/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/HydratedDeploymentName.java b/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/HydratedDeploymentName.java
index 3875ef6e220b..751c370221ab 100644
--- a/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/HydratedDeploymentName.java
+++ b/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/HydratedDeploymentName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HydratedDeploymentName implements ResourceName {
   private static final PathTemplate
diff --git a/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/LocationName.java b/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/LocationName.java
index 7886a06d9f75..c9ddc0dd4148 100644
--- a/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/LocationName.java
+++ b/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/OrchestrationClusterName.java b/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/OrchestrationClusterName.java
index 64902da60e6e..c3b9e216d90c 100644
--- a/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/OrchestrationClusterName.java
+++ b/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/OrchestrationClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OrchestrationClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ORCHESTRATION_CLUSTER =
diff --git a/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/PublicBlueprintName.java b/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/PublicBlueprintName.java
index 63edf15995c1..84c3ca4b2850 100644
--- a/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/PublicBlueprintName.java
+++ b/java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/PublicBlueprintName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PublicBlueprintName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PUBLIC_LUEPRINT =
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechClient.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechClient.java
index 5b777c4d21a5..4e937a58d42f 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechClient.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TextToSpeechClient implements BackgroundResource {
   private final TextToSpeechSettings settings;
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechLongAudioSynthesizeClient.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechLongAudioSynthesizeClient.java
index 1c3e28fffde6..8908e118c82b 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechLongAudioSynthesizeClient.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechLongAudioSynthesizeClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TextToSpeechLongAudioSynthesizeClient implements BackgroundResource {
   private final TextToSpeechLongAudioSynthesizeSettings settings;
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechLongAudioSynthesizeSettings.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechLongAudioSynthesizeSettings.java
index 290f4142f04d..cc2f8b315618 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechLongAudioSynthesizeSettings.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechLongAudioSynthesizeSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TextToSpeechLongAudioSynthesizeSettings
     extends ClientSettings<TextToSpeechLongAudioSynthesizeSettings> {
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechSettings.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechSettings.java
index 74323199e34c..a94289a40a92 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechSettings.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TextToSpeechSettings extends ClientSettings<TextToSpeechSettings> {
 
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/GrpcTextToSpeechCallableFactory.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/GrpcTextToSpeechCallableFactory.java
index 4fd5c69d9c8c..338c2ab99ba4 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/GrpcTextToSpeechCallableFactory.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/GrpcTextToSpeechCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTextToSpeechCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/GrpcTextToSpeechLongAudioSynthesizeCallableFactory.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/GrpcTextToSpeechLongAudioSynthesizeCallableFactory.java
index dd065d54fb27..c5b0cc8dbc6c 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/GrpcTextToSpeechLongAudioSynthesizeCallableFactory.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/GrpcTextToSpeechLongAudioSynthesizeCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTextToSpeechLongAudioSynthesizeCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/GrpcTextToSpeechLongAudioSynthesizeStub.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/GrpcTextToSpeechLongAudioSynthesizeStub.java
index 78bf5aea612d..596269bd6b9a 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/GrpcTextToSpeechLongAudioSynthesizeStub.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/GrpcTextToSpeechLongAudioSynthesizeStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTextToSpeechLongAudioSynthesizeStub extends TextToSpeechLongAudioSynthesizeStub {
   private static final MethodDescriptor<SynthesizeLongAudioRequest, Operation>
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/GrpcTextToSpeechStub.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/GrpcTextToSpeechStub.java
index cf5a2b7a6b0e..153517778e6d 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/GrpcTextToSpeechStub.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/GrpcTextToSpeechStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTextToSpeechStub extends TextToSpeechStub {
   private static final MethodDescriptor<ListVoicesRequest, ListVoicesResponse>
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechCallableFactory.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechCallableFactory.java
index 6dd3a2121409..1b1c90f76674 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechCallableFactory.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTextToSpeechCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechLongAudioSynthesizeCallableFactory.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechLongAudioSynthesizeCallableFactory.java
index 2cd7278828b5..04c970b00f2b 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechLongAudioSynthesizeCallableFactory.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechLongAudioSynthesizeCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTextToSpeechLongAudioSynthesizeCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechLongAudioSynthesizeStub.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechLongAudioSynthesizeStub.java
index b559cf20d933..7ebf79c8e7c9 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechLongAudioSynthesizeStub.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechLongAudioSynthesizeStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTextToSpeechLongAudioSynthesizeStub
     extends TextToSpeechLongAudioSynthesizeStub {
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechStub.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechStub.java
index ebf7500f4a40..1aa7f03dc8cc 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechStub.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/HttpJsonTextToSpeechStub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTextToSpeechStub extends TextToSpeechStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/TextToSpeechLongAudioSynthesizeStub.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/TextToSpeechLongAudioSynthesizeStub.java
index 1b748c6cbc7a..72b1f24e93fa 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/TextToSpeechLongAudioSynthesizeStub.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/TextToSpeechLongAudioSynthesizeStub.java
@@ -25,6 +25,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TextToSpeechLongAudioSynthesizeStub implements BackgroundResource {
 
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/TextToSpeechLongAudioSynthesizeStubSettings.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/TextToSpeechLongAudioSynthesizeStubSettings.java
index c16e151848cd..ab094958b8cb 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/TextToSpeechLongAudioSynthesizeStubSettings.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/TextToSpeechLongAudioSynthesizeStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TextToSpeechLongAudioSynthesizeStubSettings
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/TextToSpeechStub.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/TextToSpeechStub.java
index 78cd1383adb8..51d0da1954c1 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/TextToSpeechStub.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/TextToSpeechStub.java
@@ -26,6 +26,7 @@
 import com.google.cloud.texttospeech.v1.SynthesizeSpeechRequest;
 import com.google.cloud.texttospeech.v1.SynthesizeSpeechResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TextToSpeechStub implements BackgroundResource {
 
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/TextToSpeechStubSettings.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/TextToSpeechStubSettings.java
index 151113e592dd..f80b0b11bc27 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/TextToSpeechStubSettings.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1/stub/TextToSpeechStubSettings.java
@@ -51,6 +51,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TextToSpeechStubSettings extends StubSettings<TextToSpeechStubSettings> {
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechClient.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechClient.java
index 8a7b75aac23b..924ce2a83f13 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechClient.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechClient.java
@@ -25,6 +25,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -155,6 +156,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TextToSpeechClient implements BackgroundResource {
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechLongAudioSynthesizeClient.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechLongAudioSynthesizeClient.java
index 2609723f7e34..a20c31c2e73b 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechLongAudioSynthesizeClient.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechLongAudioSynthesizeClient.java
@@ -28,6 +28,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -141,6 +142,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TextToSpeechLongAudioSynthesizeClient implements BackgroundResource {
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechLongAudioSynthesizeSettings.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechLongAudioSynthesizeSettings.java
index 998d05404695..9db5de4d3e70 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechLongAudioSynthesizeSettings.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechLongAudioSynthesizeSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -111,6 +112,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TextToSpeechLongAudioSynthesizeSettings
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechSettings.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechSettings.java
index 8e41ea619d97..5b2d2e88b3d8 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechSettings.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/TextToSpeechSettings.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TextToSpeechSettings extends ClientSettings<TextToSpeechSettings> {
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/GrpcTextToSpeechCallableFactory.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/GrpcTextToSpeechCallableFactory.java
index 8a71ad4642dd..c56129bfbf3a 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/GrpcTextToSpeechCallableFactory.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/GrpcTextToSpeechCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTextToSpeechCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/GrpcTextToSpeechLongAudioSynthesizeCallableFactory.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/GrpcTextToSpeechLongAudioSynthesizeCallableFactory.java
index a2aca3d09d14..0eb7f5e52483 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/GrpcTextToSpeechLongAudioSynthesizeCallableFactory.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/GrpcTextToSpeechLongAudioSynthesizeCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTextToSpeechLongAudioSynthesizeCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/GrpcTextToSpeechLongAudioSynthesizeStub.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/GrpcTextToSpeechLongAudioSynthesizeStub.java
index 1d9d1a20353e..f1748230e00c 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/GrpcTextToSpeechLongAudioSynthesizeStub.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/GrpcTextToSpeechLongAudioSynthesizeStub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTextToSpeechLongAudioSynthesizeStub extends TextToSpeechLongAudioSynthesizeStub {
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/GrpcTextToSpeechStub.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/GrpcTextToSpeechStub.java
index ec94fe8edbbf..b8426f43b275 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/GrpcTextToSpeechStub.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/GrpcTextToSpeechStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTextToSpeechStub extends TextToSpeechStub {
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechCallableFactory.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechCallableFactory.java
index fc43f7669cb3..606e0bd16fbc 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechCallableFactory.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTextToSpeechCallableFactory
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechLongAudioSynthesizeCallableFactory.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechLongAudioSynthesizeCallableFactory.java
index 6f86b213c44a..f4c239a8586d 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechLongAudioSynthesizeCallableFactory.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechLongAudioSynthesizeCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTextToSpeechLongAudioSynthesizeCallableFactory
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechLongAudioSynthesizeStub.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechLongAudioSynthesizeStub.java
index 220856a6aec5..4710f09b2f17 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechLongAudioSynthesizeStub.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechLongAudioSynthesizeStub.java
@@ -46,6 +46,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTextToSpeechLongAudioSynthesizeStub
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechStub.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechStub.java
index 11f11867b76d..a6a6efe4b8c5 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechStub.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/HttpJsonTextToSpeechStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTextToSpeechStub extends TextToSpeechStub {
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/TextToSpeechLongAudioSynthesizeStub.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/TextToSpeechLongAudioSynthesizeStub.java
index eaabec359611..cdba18c943f9 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/TextToSpeechLongAudioSynthesizeStub.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/TextToSpeechLongAudioSynthesizeStub.java
@@ -26,6 +26,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class TextToSpeechLongAudioSynthesizeStub implements BackgroundResource {
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/TextToSpeechLongAudioSynthesizeStubSettings.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/TextToSpeechLongAudioSynthesizeStubSettings.java
index 9a668b544301..d2a482ab8982 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/TextToSpeechLongAudioSynthesizeStubSettings.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/TextToSpeechLongAudioSynthesizeStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/TextToSpeechStub.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/TextToSpeechStub.java
index d149ef6a91f3..c5c154e4d016 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/TextToSpeechStub.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/TextToSpeechStub.java
@@ -27,6 +27,7 @@
 import com.google.cloud.texttospeech.v1beta1.SynthesizeSpeechRequest;
 import com.google.cloud.texttospeech.v1beta1.SynthesizeSpeechResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class TextToSpeechStub implements BackgroundResource {
diff --git a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/TextToSpeechStubSettings.java b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/TextToSpeechStubSettings.java
index b3d3e24ea78f..9bd4607fc85e 100644
--- a/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/TextToSpeechStubSettings.java
+++ b/java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/TextToSpeechStubSettings.java
@@ -51,6 +51,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/TpuClient.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/TpuClient.java
index 728d66104d97..9efd0ee245a8 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/TpuClient.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/TpuClient.java
@@ -39,6 +39,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -342,6 +343,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TpuClient implements BackgroundResource {
   private final TpuSettings settings;
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/TpuSettings.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/TpuSettings.java
index 61662825dcc9..c158733e71d5 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/TpuSettings.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/TpuSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TpuSettings extends ClientSettings<TpuSettings> {
 
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/stub/GrpcTpuCallableFactory.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/stub/GrpcTpuCallableFactory.java
index a3ac6c38631c..3aa0cf835927 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/stub/GrpcTpuCallableFactory.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/stub/GrpcTpuCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTpuCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/stub/GrpcTpuStub.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/stub/GrpcTpuStub.java
index 3bace19bf2e6..8686fd74e753 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/stub/GrpcTpuStub.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/stub/GrpcTpuStub.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTpuStub extends TpuStub {
   private static final MethodDescriptor<ListNodesRequest, ListNodesResponse>
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/stub/TpuStub.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/stub/TpuStub.java
index 3ee5c8342286..9e01f73f71a0 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/stub/TpuStub.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/stub/TpuStub.java
@@ -49,6 +49,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TpuStub implements BackgroundResource {
 
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/stub/TpuStubSettings.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/stub/TpuStubSettings.java
index be91995b936c..285b1e962acc 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/stub/TpuStubSettings.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v1/stub/TpuStubSettings.java
@@ -79,6 +79,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -154,6 +155,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TpuStubSettings extends StubSettings<TpuStubSettings> {
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/TpuClient.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/TpuClient.java
index f701cba05d74..bddb94bf8177 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/TpuClient.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/TpuClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -489,6 +490,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TpuClient implements BackgroundResource {
   private final TpuSettings settings;
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/TpuSettings.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/TpuSettings.java
index ba615afcae16..78f22ba03c92 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/TpuSettings.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/TpuSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TpuSettings extends ClientSettings<TpuSettings> {
 
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/GrpcTpuCallableFactory.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/GrpcTpuCallableFactory.java
index 044430a05624..77389549cf21 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/GrpcTpuCallableFactory.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/GrpcTpuCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTpuCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/GrpcTpuStub.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/GrpcTpuStub.java
index 2ab858e5c302..ebf0e42c24f6 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/GrpcTpuStub.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/GrpcTpuStub.java
@@ -71,6 +71,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -78,6 +79,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTpuStub extends TpuStub {
   private static final MethodDescriptor<ListNodesRequest, ListNodesResponse>
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/HttpJsonTpuCallableFactory.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/HttpJsonTpuCallableFactory.java
index d86880fd712f..d613167231fe 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/HttpJsonTpuCallableFactory.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/HttpJsonTpuCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTpuCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/HttpJsonTpuStub.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/HttpJsonTpuStub.java
index 6f68683c91b6..50a1021b7672 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/HttpJsonTpuStub.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/HttpJsonTpuStub.java
@@ -82,6 +82,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTpuStub extends TpuStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/TpuStub.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/TpuStub.java
index 033bc9844aed..ea72f347da98 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/TpuStub.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/TpuStub.java
@@ -62,6 +62,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TpuStub implements BackgroundResource {
 
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/TpuStubSettings.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/TpuStubSettings.java
index ea84eddad6cd..1270b15e571d 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/TpuStubSettings.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/TpuStubSettings.java
@@ -96,6 +96,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -171,6 +172,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TpuStubSettings extends StubSettings<TpuStubSettings> {
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/TpuClient.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/TpuClient.java
index 60c1844d36b7..6dc7aa49379e 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/TpuClient.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/TpuClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -536,6 +537,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TpuClient implements BackgroundResource {
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/TpuSettings.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/TpuSettings.java
index c27a649c56b2..20c2d9bf57b4 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/TpuSettings.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/TpuSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TpuSettings extends ClientSettings<TpuSettings> {
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/stub/GrpcTpuCallableFactory.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/stub/GrpcTpuCallableFactory.java
index 0436073ce2eb..ad2d0e0f219f 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/stub/GrpcTpuCallableFactory.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/stub/GrpcTpuCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTpuCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/stub/GrpcTpuStub.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/stub/GrpcTpuStub.java
index 6cad0aa88f30..52688b8cd7ec 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/stub/GrpcTpuStub.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/stub/GrpcTpuStub.java
@@ -78,6 +78,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTpuStub extends TpuStub {
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/stub/TpuStub.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/stub/TpuStub.java
index ca5e256a36c4..d480f7e7ef4b 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/stub/TpuStub.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/stub/TpuStub.java
@@ -69,6 +69,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -76,6 +77,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class TpuStub implements BackgroundResource {
diff --git a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/stub/TpuStubSettings.java b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/stub/TpuStubSettings.java
index b80c4ebc21c1..788b3da8eafd 100644
--- a/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/stub/TpuStubSettings.java
+++ b/java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2alpha1/stub/TpuStubSettings.java
@@ -100,6 +100,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -175,6 +176,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/AcceleratorTypeName.java b/java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/AcceleratorTypeName.java
index a720ff83aaa2..8832123044cb 100644
--- a/java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/AcceleratorTypeName.java
+++ b/java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/AcceleratorTypeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AcceleratorTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ACCELERATOR_TYPE =
diff --git a/java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/LocationName.java b/java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/LocationName.java
index f61cad72fdfa..f1461934b366 100644
--- a/java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/LocationName.java
+++ b/java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/NodeName.java b/java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/NodeName.java
index d10647044c25..fa6ce94f2b6d 100644
--- a/java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/NodeName.java
+++ b/java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/NodeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NodeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NODE =
diff --git a/java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/TensorFlowVersionName.java b/java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/TensorFlowVersionName.java
index 938bd4000295..a381b0c6141b 100644
--- a/java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/TensorFlowVersionName.java
+++ b/java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/TensorFlowVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TensorFlowVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TENSOR_FLOW_VERSION =
diff --git a/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/AcceleratorTypeName.java b/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/AcceleratorTypeName.java
index ababb7bda150..14d309cecad7 100644
--- a/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/AcceleratorTypeName.java
+++ b/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/AcceleratorTypeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AcceleratorTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ACCELERATOR_TYPE =
diff --git a/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/LocationName.java b/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/LocationName.java
index 1a34fcaae6c9..b7cc4f09ebe9 100644
--- a/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/LocationName.java
+++ b/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/NodeName.java b/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/NodeName.java
index 427d8e7df2b2..7c437a39198a 100644
--- a/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/NodeName.java
+++ b/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/NodeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NodeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NODE =
diff --git a/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/QueuedResourceName.java b/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/QueuedResourceName.java
index 1679f008bd9e..2aaa94eff789 100644
--- a/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/QueuedResourceName.java
+++ b/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/QueuedResourceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QueuedResourceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_QUEUED_RESOURCE =
diff --git a/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/RuntimeVersionName.java b/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/RuntimeVersionName.java
index 647f0c236fba..acaef3ceeafd 100644
--- a/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/RuntimeVersionName.java
+++ b/java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/RuntimeVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RuntimeVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RUNTIME_VERSION =
diff --git a/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/AcceleratorTypeName.java b/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/AcceleratorTypeName.java
index 5d1a0408da03..542bfc8dfbbf 100644
--- a/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/AcceleratorTypeName.java
+++ b/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/AcceleratorTypeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AcceleratorTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ACCELERATOR_TYPE =
diff --git a/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/LocationName.java b/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/LocationName.java
index 4dbe13832843..6010e70fe9a7 100644
--- a/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/LocationName.java
+++ b/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/NodeName.java b/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/NodeName.java
index 5a9ec76a94c8..c34b0a9adbdc 100644
--- a/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/NodeName.java
+++ b/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/NodeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NodeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NODE =
diff --git a/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/QueuedResourceName.java b/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/QueuedResourceName.java
index 913b4b3d52a7..338ab86ceb95 100644
--- a/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/QueuedResourceName.java
+++ b/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/QueuedResourceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class QueuedResourceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_QUEUED_RESOURCE =
diff --git a/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/ReservationName.java b/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/ReservationName.java
index 00867e90dca2..89060519ad05 100644
--- a/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/ReservationName.java
+++ b/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/ReservationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReservationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RESERVATION =
diff --git a/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/RuntimeVersionName.java b/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/RuntimeVersionName.java
index e8d572155581..7d5b3912c8c6 100644
--- a/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/RuntimeVersionName.java
+++ b/java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/RuntimeVersionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RuntimeVersionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RUNTIME_VERSION =
diff --git a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/TraceServiceClient.java b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/TraceServiceClient.java
index 4194c4f3e39d..01bfe035a28a 100644
--- a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/TraceServiceClient.java
+++ b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/TraceServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -181,6 +182,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TraceServiceClient implements BackgroundResource {
   private final TraceServiceSettings settings;
diff --git a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/TraceServiceSettings.java b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/TraceServiceSettings.java
index e362672cefaa..440d21b5cb92 100644
--- a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/TraceServiceSettings.java
+++ b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/TraceServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TraceServiceSettings extends ClientSettings<TraceServiceSettings> {
 
diff --git a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/GrpcTraceServiceCallableFactory.java b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/GrpcTraceServiceCallableFactory.java
index 6077ef5f611f..38bc3a48dc22 100644
--- a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/GrpcTraceServiceCallableFactory.java
+++ b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/GrpcTraceServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTraceServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/GrpcTraceServiceStub.java b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/GrpcTraceServiceStub.java
index 0e397613d572..71d1d4f30a94 100644
--- a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/GrpcTraceServiceStub.java
+++ b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/GrpcTraceServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTraceServiceStub extends TraceServiceStub {
   private static final MethodDescriptor<ListTracesRequest, ListTracesResponse>
diff --git a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/HttpJsonTraceServiceCallableFactory.java b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/HttpJsonTraceServiceCallableFactory.java
index 8f6c3ed87080..20a954b6ff66 100644
--- a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/HttpJsonTraceServiceCallableFactory.java
+++ b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/HttpJsonTraceServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTraceServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/HttpJsonTraceServiceStub.java b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/HttpJsonTraceServiceStub.java
index 7495ca1b7cd7..b8c8f389b043 100644
--- a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/HttpJsonTraceServiceStub.java
+++ b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/HttpJsonTraceServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTraceServiceStub extends TraceServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/TraceServiceStub.java b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/TraceServiceStub.java
index 80642c75ee65..241d38818656 100644
--- a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/TraceServiceStub.java
+++ b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/TraceServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.devtools.cloudtrace.v1.Trace;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TraceServiceStub implements BackgroundResource {
 
diff --git a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/TraceServiceStubSettings.java b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/TraceServiceStubSettings.java
index e47f26dab336..236b8a30b343 100644
--- a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/TraceServiceStubSettings.java
+++ b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v1/stub/TraceServiceStubSettings.java
@@ -59,6 +59,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TraceServiceStubSettings extends StubSettings<TraceServiceStubSettings> {
diff --git a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/TraceServiceClient.java b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/TraceServiceClient.java
index 8b1dd1c1059d..24e832ae5a36 100644
--- a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/TraceServiceClient.java
+++ b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/TraceServiceClient.java
@@ -28,6 +28,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -152,6 +153,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TraceServiceClient implements BackgroundResource {
   private final TraceServiceSettings settings;
diff --git a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/TraceServiceSettings.java b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/TraceServiceSettings.java
index a8065b15d9f9..33b7f54a7021 100644
--- a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/TraceServiceSettings.java
+++ b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/TraceServiceSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TraceServiceSettings extends ClientSettings<TraceServiceSettings> {
 
diff --git a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/GrpcTraceServiceCallableFactory.java b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/GrpcTraceServiceCallableFactory.java
index a51c8852875c..f330385a8559 100644
--- a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/GrpcTraceServiceCallableFactory.java
+++ b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/GrpcTraceServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTraceServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/GrpcTraceServiceStub.java b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/GrpcTraceServiceStub.java
index 03cdf2f610a7..70edfa08d49a 100644
--- a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/GrpcTraceServiceStub.java
+++ b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/GrpcTraceServiceStub.java
@@ -32,6 +32,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTraceServiceStub extends TraceServiceStub {
   private static final MethodDescriptor<BatchWriteSpansRequest, Empty>
diff --git a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/HttpJsonTraceServiceCallableFactory.java b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/HttpJsonTraceServiceCallableFactory.java
index a3037f007663..f55f505c5820 100644
--- a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/HttpJsonTraceServiceCallableFactory.java
+++ b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/HttpJsonTraceServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTraceServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/HttpJsonTraceServiceStub.java b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/HttpJsonTraceServiceStub.java
index 486e07a991bf..63f136626061 100644
--- a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/HttpJsonTraceServiceStub.java
+++ b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/HttpJsonTraceServiceStub.java
@@ -39,6 +39,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTraceServiceStub extends TraceServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/TraceServiceStub.java b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/TraceServiceStub.java
index 6129899ecad5..b44a0b585386 100644
--- a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/TraceServiceStub.java
+++ b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/TraceServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.devtools.cloudtrace.v2.Span;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TraceServiceStub implements BackgroundResource {
 
diff --git a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/TraceServiceStubSettings.java b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/TraceServiceStubSettings.java
index c79077011c31..256b6c876754 100644
--- a/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/TraceServiceStubSettings.java
+++ b/java-trace/google-cloud-trace/src/main/java/com/google/cloud/trace/v2/stub/TraceServiceStubSettings.java
@@ -47,6 +47,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TraceServiceStubSettings extends StubSettings<TraceServiceStubSettings> {
diff --git a/java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/ProjectName.java b/java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/ProjectName.java
index 488746ad2901..8fc0922a28b6 100644
--- a/java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/ProjectName.java
+++ b/java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/SpanName.java b/java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/SpanName.java
index 51e7fe1567d6..50a40dcccd46 100644
--- a/java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/SpanName.java
+++ b/java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/SpanName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SpanName implements ResourceName {
   private static final PathTemplate PROJECT_TRACE_SPAN =
diff --git a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/TranslationServiceClient.java b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/TranslationServiceClient.java
index 7e7757a5b479..a9301d09fbf6 100644
--- a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/TranslationServiceClient.java
+++ b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/TranslationServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -861,6 +862,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TranslationServiceClient implements BackgroundResource {
   private final TranslationServiceSettings settings;
diff --git a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/TranslationServiceSettings.java b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/TranslationServiceSettings.java
index b891629cbc83..301b0dcc5a72 100644
--- a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/TranslationServiceSettings.java
+++ b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/TranslationServiceSettings.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TranslationServiceSettings extends ClientSettings<TranslationServiceSettings> {
 
diff --git a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/GrpcTranslationServiceCallableFactory.java b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/GrpcTranslationServiceCallableFactory.java
index 2553b7189ca8..5f40fa67d636 100644
--- a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/GrpcTranslationServiceCallableFactory.java
+++ b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/GrpcTranslationServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTranslationServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/GrpcTranslationServiceStub.java b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/GrpcTranslationServiceStub.java
index 279f40635b79..0b278570928c 100644
--- a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/GrpcTranslationServiceStub.java
+++ b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/GrpcTranslationServiceStub.java
@@ -114,6 +114,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTranslationServiceStub extends TranslationServiceStub {
   private static final MethodDescriptor<TranslateTextRequest, TranslateTextResponse>
diff --git a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/HttpJsonTranslationServiceCallableFactory.java b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/HttpJsonTranslationServiceCallableFactory.java
index 00349ff47982..4f457c175d6e 100644
--- a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/HttpJsonTranslationServiceCallableFactory.java
+++ b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/HttpJsonTranslationServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTranslationServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/HttpJsonTranslationServiceStub.java b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/HttpJsonTranslationServiceStub.java
index c8cea6dacee5..4eaeeff3d42f 100644
--- a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/HttpJsonTranslationServiceStub.java
+++ b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/HttpJsonTranslationServiceStub.java
@@ -125,6 +125,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTranslationServiceStub extends TranslationServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/TranslationServiceStub.java b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/TranslationServiceStub.java
index 7ec079183091..24318c35b100 100644
--- a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/TranslationServiceStub.java
+++ b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/TranslationServiceStub.java
@@ -105,6 +105,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TranslationServiceStub implements BackgroundResource {
 
diff --git a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/TranslationServiceStubSettings.java b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/TranslationServiceStubSettings.java
index a3acd84ffd19..226d980af07e 100644
--- a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/TranslationServiceStubSettings.java
+++ b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3/stub/TranslationServiceStubSettings.java
@@ -141,6 +141,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -219,6 +220,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TranslationServiceStubSettings extends StubSettings<TranslationServiceStubSettings> {
diff --git a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/TranslationServiceClient.java b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/TranslationServiceClient.java
index 0a28bc90a66f..249dbd1fafd7 100644
--- a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/TranslationServiceClient.java
+++ b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/TranslationServiceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -331,6 +332,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TranslationServiceClient implements BackgroundResource {
diff --git a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/TranslationServiceSettings.java b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/TranslationServiceSettings.java
index 2f4ca01a50e9..3ba6500e7c7a 100644
--- a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/TranslationServiceSettings.java
+++ b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/TranslationServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class TranslationServiceSettings extends ClientSettings<TranslationServiceSettings> {
diff --git a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/GrpcTranslationServiceCallableFactory.java b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/GrpcTranslationServiceCallableFactory.java
index 6992e941d3e1..805481e5b5f3 100644
--- a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/GrpcTranslationServiceCallableFactory.java
+++ b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/GrpcTranslationServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTranslationServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/GrpcTranslationServiceStub.java b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/GrpcTranslationServiceStub.java
index a8e0927cf828..a158dd876fb2 100644
--- a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/GrpcTranslationServiceStub.java
+++ b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/GrpcTranslationServiceStub.java
@@ -59,6 +59,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcTranslationServiceStub extends TranslationServiceStub {
diff --git a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/HttpJsonTranslationServiceCallableFactory.java b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/HttpJsonTranslationServiceCallableFactory.java
index 125d7e62af58..c8bd2e601fc3 100644
--- a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/HttpJsonTranslationServiceCallableFactory.java
+++ b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/HttpJsonTranslationServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTranslationServiceCallableFactory
diff --git a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/HttpJsonTranslationServiceStub.java b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/HttpJsonTranslationServiceStub.java
index 5d42d320cc80..4170791c80c6 100644
--- a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/HttpJsonTranslationServiceStub.java
+++ b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/HttpJsonTranslationServiceStub.java
@@ -70,6 +70,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonTranslationServiceStub extends TranslationServiceStub {
diff --git a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/TranslationServiceStub.java b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/TranslationServiceStub.java
index fb464c7af2a9..2abb8c47fba7 100644
--- a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/TranslationServiceStub.java
+++ b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/TranslationServiceStub.java
@@ -50,6 +50,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class TranslationServiceStub implements BackgroundResource {
diff --git a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/TranslationServiceStubSettings.java b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/TranslationServiceStubSettings.java
index 310aa8abff1c..dd221317a270 100644
--- a/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/TranslationServiceStubSettings.java
+++ b/java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/stub/TranslationServiceStubSettings.java
@@ -83,6 +83,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -161,6 +162,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/AdaptiveMtDatasetName.java b/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/AdaptiveMtDatasetName.java
index 1badb0166dd8..af348f633d3c 100644
--- a/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/AdaptiveMtDatasetName.java
+++ b/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/AdaptiveMtDatasetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdaptiveMtDatasetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET =
diff --git a/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/AdaptiveMtFileName.java b/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/AdaptiveMtFileName.java
index 07d53d3c4e0b..599ba306040a 100644
--- a/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/AdaptiveMtFileName.java
+++ b/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/AdaptiveMtFileName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AdaptiveMtFileName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET_FILE =
diff --git a/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/DatasetName.java b/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/DatasetName.java
index 389271c83931..abc0b3eb0dad 100644
--- a/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/DatasetName.java
+++ b/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/DatasetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatasetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_DATASET =
diff --git a/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/GlossaryEntryName.java b/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/GlossaryEntryName.java
index ddb73b39df57..fc54029c222b 100644
--- a/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/GlossaryEntryName.java
+++ b/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/GlossaryEntryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlossaryEntryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GLOSSARY_GLOSSARY_ENTRY =
diff --git a/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/GlossaryName.java b/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/GlossaryName.java
index 5585b9bc874a..e0e9b8ad9b0c 100644
--- a/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/GlossaryName.java
+++ b/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/GlossaryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlossaryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GLOSSARY =
diff --git a/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/LocationName.java b/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/LocationName.java
index 6e968f728d7a..570d77c4bf76 100644
--- a/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/LocationName.java
+++ b/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/ModelName.java b/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/ModelName.java
index 4b3edd36da90..225055f9b60d 100644
--- a/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/ModelName.java
+++ b/java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/ModelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ModelName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_MODEL =
diff --git a/java-translate/proto-google-cloud-translate-v3beta1/src/main/java/com/google/cloud/translate/v3beta1/GlossaryName.java b/java-translate/proto-google-cloud-translate-v3beta1/src/main/java/com/google/cloud/translate/v3beta1/GlossaryName.java
index 8d4f41b0f34f..96018df98351 100644
--- a/java-translate/proto-google-cloud-translate-v3beta1/src/main/java/com/google/cloud/translate/v3beta1/GlossaryName.java
+++ b/java-translate/proto-google-cloud-translate-v3beta1/src/main/java/com/google/cloud/translate/v3beta1/GlossaryName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GlossaryName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GLOSSARY =
diff --git a/java-translate/proto-google-cloud-translate-v3beta1/src/main/java/com/google/cloud/translate/v3beta1/LocationName.java b/java-translate/proto-google-cloud-translate-v3beta1/src/main/java/com/google/cloud/translate/v3beta1/LocationName.java
index f96f47e8615f..97be50a2a266 100644
--- a/java-translate/proto-google-cloud-translate-v3beta1/src/main/java/com/google/cloud/translate/v3beta1/LocationName.java
+++ b/java-translate/proto-google-cloud-translate-v3beta1/src/main/java/com/google/cloud/translate/v3beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/MemorystoreClient.java b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/MemorystoreClient.java
index 2128f62d69a0..fe9c9240cb5b 100644
--- a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/MemorystoreClient.java
+++ b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/MemorystoreClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -446,6 +447,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MemorystoreClient implements BackgroundResource {
   private final MemorystoreSettings settings;
diff --git a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/MemorystoreSettings.java b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/MemorystoreSettings.java
index 1dc735d08f13..318e0671b597 100644
--- a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/MemorystoreSettings.java
+++ b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/MemorystoreSettings.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MemorystoreSettings extends ClientSettings<MemorystoreSettings> {
 
diff --git a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/GrpcMemorystoreCallableFactory.java b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/GrpcMemorystoreCallableFactory.java
index f1a323d54c26..25149a04a3b6 100644
--- a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/GrpcMemorystoreCallableFactory.java
+++ b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/GrpcMemorystoreCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMemorystoreCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/GrpcMemorystoreStub.java b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/GrpcMemorystoreStub.java
index 0938ec87384d..9629a967f0d2 100644
--- a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/GrpcMemorystoreStub.java
+++ b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/GrpcMemorystoreStub.java
@@ -65,6 +65,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcMemorystoreStub extends MemorystoreStub {
   private static final MethodDescriptor<ListInstancesRequest, ListInstancesResponse>
diff --git a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/HttpJsonMemorystoreCallableFactory.java b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/HttpJsonMemorystoreCallableFactory.java
index 2629a4da3dce..5d16074b040f 100644
--- a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/HttpJsonMemorystoreCallableFactory.java
+++ b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/HttpJsonMemorystoreCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMemorystoreCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/HttpJsonMemorystoreStub.java b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/HttpJsonMemorystoreStub.java
index ab7973f22a63..2845712c1c93 100644
--- a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/HttpJsonMemorystoreStub.java
+++ b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/HttpJsonMemorystoreStub.java
@@ -76,6 +76,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonMemorystoreStub extends MemorystoreStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/MemorystoreStub.java b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/MemorystoreStub.java
index 1fb8b799f45c..67e1b4db435f 100644
--- a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/MemorystoreStub.java
+++ b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/MemorystoreStub.java
@@ -56,6 +56,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class MemorystoreStub implements BackgroundResource {
 
diff --git a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/MemorystoreStubSettings.java b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/MemorystoreStubSettings.java
index a5530b44b532..d2cf763f7000 100644
--- a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/MemorystoreStubSettings.java
+++ b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1/stub/MemorystoreStubSettings.java
@@ -90,6 +90,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class MemorystoreStubSettings extends StubSettings<MemorystoreStubSettings> {
diff --git a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/MemorystoreClient.java b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/MemorystoreClient.java
index d80a2de24f77..45afc09ec459 100644
--- a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/MemorystoreClient.java
+++ b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/MemorystoreClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -291,6 +292,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MemorystoreClient implements BackgroundResource {
diff --git a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/MemorystoreSettings.java b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/MemorystoreSettings.java
index 5573ebe5f033..18316900f732 100644
--- a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/MemorystoreSettings.java
+++ b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/MemorystoreSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class MemorystoreSettings extends ClientSettings<MemorystoreSettings> {
diff --git a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/GrpcMemorystoreCallableFactory.java b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/GrpcMemorystoreCallableFactory.java
index 6bb6e125a454..17c85f6ea8d8 100644
--- a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/GrpcMemorystoreCallableFactory.java
+++ b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/GrpcMemorystoreCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMemorystoreCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/GrpcMemorystoreStub.java b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/GrpcMemorystoreStub.java
index b96142f6e80a..5a642d9bbeaf 100644
--- a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/GrpcMemorystoreStub.java
+++ b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/GrpcMemorystoreStub.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcMemorystoreStub extends MemorystoreStub {
diff --git a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/HttpJsonMemorystoreCallableFactory.java b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/HttpJsonMemorystoreCallableFactory.java
index ba82e4391835..60dc1635bae6 100644
--- a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/HttpJsonMemorystoreCallableFactory.java
+++ b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/HttpJsonMemorystoreCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMemorystoreCallableFactory
diff --git a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/HttpJsonMemorystoreStub.java b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/HttpJsonMemorystoreStub.java
index f4bd0313b02d..19050bd77bde 100644
--- a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/HttpJsonMemorystoreStub.java
+++ b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/HttpJsonMemorystoreStub.java
@@ -63,6 +63,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonMemorystoreStub extends MemorystoreStub {
diff --git a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/MemorystoreStub.java b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/MemorystoreStub.java
index 4a05fd4625a0..36e66383c46d 100644
--- a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/MemorystoreStub.java
+++ b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/MemorystoreStub.java
@@ -43,6 +43,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class MemorystoreStub implements BackgroundResource {
diff --git a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/MemorystoreStubSettings.java b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/MemorystoreStubSettings.java
index 05d4edb81e08..245279106bbc 100644
--- a/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/MemorystoreStubSettings.java
+++ b/java-valkey/google-cloud-valkey/src/main/java/com/google/cloud/memorystore/v1beta/stub/MemorystoreStubSettings.java
@@ -76,6 +76,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -153,6 +154,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/BackupCollectionName.java b/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/BackupCollectionName.java
index f7adce5b009b..b36c2921fb93 100644
--- a/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/BackupCollectionName.java
+++ b/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/BackupCollectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupCollectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP_COLLECTION =
diff --git a/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/BackupName.java b/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/BackupName.java
index 719b1d875abf..d026182f9d30 100644
--- a/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/BackupName.java
+++ b/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/BackupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class BackupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_BACKUP_COLLECTION_BACKUP =
diff --git a/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/InstanceName.java b/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/InstanceName.java
index b2ed67310f48..3a6fd50e65d4 100644
--- a/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/InstanceName.java
+++ b/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/LocationName.java b/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/LocationName.java
index 1b8fcb97e692..c97a7619a562 100644
--- a/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/LocationName.java
+++ b/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/SharedRegionalCertificateAuthorityName.java b/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/SharedRegionalCertificateAuthorityName.java
index cdccbf0a4a1c..74b93710690e 100644
--- a/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/SharedRegionalCertificateAuthorityName.java
+++ b/java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/SharedRegionalCertificateAuthorityName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SharedRegionalCertificateAuthorityName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-valkey/proto-google-cloud-valkey-v1beta/src/main/java/com/google/cloud/memorystore/v1beta/InstanceName.java b/java-valkey/proto-google-cloud-valkey-v1beta/src/main/java/com/google/cloud/memorystore/v1beta/InstanceName.java
index 86abf0410ddd..1d557056d9e0 100644
--- a/java-valkey/proto-google-cloud-valkey-v1beta/src/main/java/com/google/cloud/memorystore/v1beta/InstanceName.java
+++ b/java-valkey/proto-google-cloud-valkey-v1beta/src/main/java/com/google/cloud/memorystore/v1beta/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INSTANCE =
diff --git a/java-valkey/proto-google-cloud-valkey-v1beta/src/main/java/com/google/cloud/memorystore/v1beta/LocationName.java b/java-valkey/proto-google-cloud-valkey-v1beta/src/main/java/com/google/cloud/memorystore/v1beta/LocationName.java
index 0fcd582e8120..3fabd88d38df 100644
--- a/java-valkey/proto-google-cloud-valkey-v1beta/src/main/java/com/google/cloud/memorystore/v1beta/LocationName.java
+++ b/java-valkey/proto-google-cloud-valkey-v1beta/src/main/java/com/google/cloud/memorystore/v1beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-valkey/proto-google-cloud-valkey-v1beta/src/main/java/com/google/cloud/memorystore/v1beta/SharedRegionalCertificateAuthorityName.java b/java-valkey/proto-google-cloud-valkey-v1beta/src/main/java/com/google/cloud/memorystore/v1beta/SharedRegionalCertificateAuthorityName.java
index b2660f367fbf..f8f5cf68682b 100644
--- a/java-valkey/proto-google-cloud-valkey-v1beta/src/main/java/com/google/cloud/memorystore/v1beta/SharedRegionalCertificateAuthorityName.java
+++ b/java-valkey/proto-google-cloud-valkey-v1beta/src/main/java/com/google/cloud/memorystore/v1beta/SharedRegionalCertificateAuthorityName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SharedRegionalCertificateAuthorityName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectSearchServiceClient.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectSearchServiceClient.java
index e4c3cd13d85e..7cba3e40bfa3 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectSearchServiceClient.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectSearchServiceClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -221,6 +222,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataObjectSearchServiceClient implements BackgroundResource {
   private final DataObjectSearchServiceSettings settings;
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectSearchServiceSettings.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectSearchServiceSettings.java
index 31916a7cfb81..3b0dbb3568c6 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectSearchServiceSettings.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectSearchServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataObjectSearchServiceSettings
     extends ClientSettings<DataObjectSearchServiceSettings> {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectServiceClient.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectServiceClient.java
index 7a110d217624..ea5c31af9bf0 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectServiceClient.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -282,6 +283,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataObjectServiceClient implements BackgroundResource {
   private final DataObjectServiceSettings settings;
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectServiceSettings.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectServiceSettings.java
index c023ce691fda..a833fd44775a 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectServiceSettings.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectServiceSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataObjectServiceSettings extends ClientSettings<DataObjectServiceSettings> {
 
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/VectorSearchServiceClient.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/VectorSearchServiceClient.java
index cc22bba3972b..f44a8cad8c0f 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/VectorSearchServiceClient.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/VectorSearchServiceClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -392,6 +393,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VectorSearchServiceClient implements BackgroundResource {
   private final VectorSearchServiceSettings settings;
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/VectorSearchServiceSettings.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/VectorSearchServiceSettings.java
index 1d716654a4f1..8be9128a2538 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/VectorSearchServiceSettings.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/VectorSearchServiceSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VectorSearchServiceSettings extends ClientSettings<VectorSearchServiceSettings> {
 
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/DataObjectSearchServiceStub.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/DataObjectSearchServiceStub.java
index 60451acacb15..edfafa639de3 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/DataObjectSearchServiceStub.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/DataObjectSearchServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.vectorsearch.v1.SearchDataObjectsRequest;
 import com.google.cloud.vectorsearch.v1.SearchDataObjectsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataObjectSearchServiceStub implements BackgroundResource {
 
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/DataObjectSearchServiceStubSettings.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/DataObjectSearchServiceStubSettings.java
index 2155bdbc09ae..6b158180625f 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/DataObjectSearchServiceStubSettings.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/DataObjectSearchServiceStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataObjectSearchServiceStubSettings
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/DataObjectServiceStub.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/DataObjectServiceStub.java
index db477b112db4..506155b61d6e 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/DataObjectServiceStub.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/DataObjectServiceStub.java
@@ -36,6 +36,7 @@
 import com.google.cloud.vectorsearch.v1.UpdateDataObjectRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class DataObjectServiceStub implements BackgroundResource {
 
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/DataObjectServiceStubSettings.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/DataObjectServiceStubSettings.java
index e147b09cc6c0..f1e2bec0030d 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/DataObjectServiceStubSettings.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/DataObjectServiceStubSettings.java
@@ -68,6 +68,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class DataObjectServiceStubSettings extends StubSettings<DataObjectServiceStubSettings> {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcDataObjectSearchServiceCallableFactory.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcDataObjectSearchServiceCallableFactory.java
index c339a03956ee..ef00653af0cf 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcDataObjectSearchServiceCallableFactory.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcDataObjectSearchServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataObjectSearchServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcDataObjectSearchServiceStub.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcDataObjectSearchServiceStub.java
index 809b8306961d..b303d1dd8381 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcDataObjectSearchServiceStub.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcDataObjectSearchServiceStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataObjectSearchServiceStub extends DataObjectSearchServiceStub {
   private static final MethodDescriptor<SearchDataObjectsRequest, SearchDataObjectsResponse>
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcDataObjectServiceCallableFactory.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcDataObjectServiceCallableFactory.java
index 5e92569efc7c..85fc5c9ceb1d 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcDataObjectServiceCallableFactory.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcDataObjectServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataObjectServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcDataObjectServiceStub.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcDataObjectServiceStub.java
index 0c5e37c82e61..fada046109db 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcDataObjectServiceStub.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcDataObjectServiceStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcDataObjectServiceStub extends DataObjectServiceStub {
   private static final MethodDescriptor<CreateDataObjectRequest, DataObject>
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcVectorSearchServiceCallableFactory.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcVectorSearchServiceCallableFactory.java
index 75e3700a92ce..d1d151273839 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcVectorSearchServiceCallableFactory.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcVectorSearchServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVectorSearchServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcVectorSearchServiceStub.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcVectorSearchServiceStub.java
index 53d5a62e8566..e17825166bc8 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcVectorSearchServiceStub.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/GrpcVectorSearchServiceStub.java
@@ -61,6 +61,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVectorSearchServiceStub extends VectorSearchServiceStub {
   private static final MethodDescriptor<ListCollectionsRequest, ListCollectionsResponse>
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonDataObjectSearchServiceCallableFactory.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonDataObjectSearchServiceCallableFactory.java
index acae081a7b2f..2a2fe68f4182 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonDataObjectSearchServiceCallableFactory.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonDataObjectSearchServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataObjectSearchServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonDataObjectSearchServiceStub.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonDataObjectSearchServiceStub.java
index a15c7e6d0832..03cd754c139d 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonDataObjectSearchServiceStub.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonDataObjectSearchServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataObjectSearchServiceStub extends DataObjectSearchServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonDataObjectServiceCallableFactory.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonDataObjectServiceCallableFactory.java
index 81af2ea0d914..f618e0630a4f 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonDataObjectServiceCallableFactory.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonDataObjectServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataObjectServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonDataObjectServiceStub.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonDataObjectServiceStub.java
index 02781a0ee7e9..0e2809a7f44e 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonDataObjectServiceStub.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonDataObjectServiceStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonDataObjectServiceStub extends DataObjectServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonVectorSearchServiceCallableFactory.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonVectorSearchServiceCallableFactory.java
index c74bf95fd5a9..dad5be9b9747 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonVectorSearchServiceCallableFactory.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonVectorSearchServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVectorSearchServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonVectorSearchServiceStub.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonVectorSearchServiceStub.java
index 4c5c59960a88..a56541fac6ba 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonVectorSearchServiceStub.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/HttpJsonVectorSearchServiceStub.java
@@ -72,6 +72,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -79,6 +80,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVectorSearchServiceStub extends VectorSearchServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/VectorSearchServiceStub.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/VectorSearchServiceStub.java
index 07e0a7475126..8eb621d70690 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/VectorSearchServiceStub.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/VectorSearchServiceStub.java
@@ -52,6 +52,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class VectorSearchServiceStub implements BackgroundResource {
 
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/VectorSearchServiceStubSettings.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/VectorSearchServiceStubSettings.java
index aecad3989f6d..c24ad568533b 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/VectorSearchServiceStubSettings.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1/stub/VectorSearchServiceStubSettings.java
@@ -86,6 +86,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -164,6 +165,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class VectorSearchServiceStubSettings extends StubSettings<VectorSearchServiceStubSettings> {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectSearchServiceClient.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectSearchServiceClient.java
index 955fce8e0a99..aea77d8095c7 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectSearchServiceClient.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectSearchServiceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -222,6 +223,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataObjectSearchServiceClient implements BackgroundResource {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectSearchServiceSettings.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectSearchServiceSettings.java
index d50e41fbc03c..152a038b8129 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectSearchServiceSettings.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectSearchServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataObjectSearchServiceSettings
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectServiceClient.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectServiceClient.java
index a41852cf1fad..b46e6d6620ee 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectServiceClient.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -283,6 +284,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataObjectServiceClient implements BackgroundResource {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectServiceSettings.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectServiceSettings.java
index 5a10d0f7ee3e..9ab311b1ce50 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectServiceSettings.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectServiceSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class DataObjectServiceSettings extends ClientSettings<DataObjectServiceSettings> {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/VectorSearchServiceClient.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/VectorSearchServiceClient.java
index f45cd02aadc4..e787a2f2515f 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/VectorSearchServiceClient.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/VectorSearchServiceClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -392,6 +393,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VectorSearchServiceClient implements BackgroundResource {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/VectorSearchServiceSettings.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/VectorSearchServiceSettings.java
index ae11ad2e439c..d19f9c388e53 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/VectorSearchServiceSettings.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/VectorSearchServiceSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VectorSearchServiceSettings extends ClientSettings<VectorSearchServiceSettings> {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/DataObjectSearchServiceStub.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/DataObjectSearchServiceStub.java
index 6e6d9b09d0a0..5a758a71dc74 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/DataObjectSearchServiceStub.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/DataObjectSearchServiceStub.java
@@ -36,6 +36,7 @@
 import com.google.cloud.vectorsearch.v1beta.SearchDataObjectsRequest;
 import com.google.cloud.vectorsearch.v1beta.SearchDataObjectsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DataObjectSearchServiceStub implements BackgroundResource {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/DataObjectSearchServiceStubSettings.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/DataObjectSearchServiceStubSettings.java
index 8b28185cfea1..f0789f53139f 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/DataObjectSearchServiceStubSettings.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/DataObjectSearchServiceStubSettings.java
@@ -69,6 +69,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -121,6 +122,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/DataObjectServiceStub.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/DataObjectServiceStub.java
index d74d0fbb0d66..beb2bc7e00dc 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/DataObjectServiceStub.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/DataObjectServiceStub.java
@@ -37,6 +37,7 @@
 import com.google.cloud.vectorsearch.v1beta.UpdateDataObjectRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class DataObjectServiceStub implements BackgroundResource {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/DataObjectServiceStubSettings.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/DataObjectServiceStubSettings.java
index 54de14389365..c32071cacfc6 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/DataObjectServiceStubSettings.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/DataObjectServiceStubSettings.java
@@ -68,6 +68,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcDataObjectSearchServiceCallableFactory.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcDataObjectSearchServiceCallableFactory.java
index a1b1173567f0..81057b35e216 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcDataObjectSearchServiceCallableFactory.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcDataObjectSearchServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataObjectSearchServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcDataObjectSearchServiceStub.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcDataObjectSearchServiceStub.java
index f4cce4890e38..76640b54a502 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcDataObjectSearchServiceStub.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcDataObjectSearchServiceStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataObjectSearchServiceStub extends DataObjectSearchServiceStub {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcDataObjectServiceCallableFactory.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcDataObjectServiceCallableFactory.java
index 6e98e4a9cdff..8b60a55ca11b 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcDataObjectServiceCallableFactory.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcDataObjectServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataObjectServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcDataObjectServiceStub.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcDataObjectServiceStub.java
index da2da6a85c0f..c6a45c239e46 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcDataObjectServiceStub.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcDataObjectServiceStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcDataObjectServiceStub extends DataObjectServiceStub {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcVectorSearchServiceCallableFactory.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcVectorSearchServiceCallableFactory.java
index 8cecce1eb33d..736785f8ffee 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcVectorSearchServiceCallableFactory.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcVectorSearchServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVectorSearchServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcVectorSearchServiceStub.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcVectorSearchServiceStub.java
index afadf2e45365..ab7ea1ca7697 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcVectorSearchServiceStub.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/GrpcVectorSearchServiceStub.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVectorSearchServiceStub extends VectorSearchServiceStub {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonDataObjectSearchServiceCallableFactory.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonDataObjectSearchServiceCallableFactory.java
index 4c3e0132ec59..3837b1f90076 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonDataObjectSearchServiceCallableFactory.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonDataObjectSearchServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataObjectSearchServiceCallableFactory
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonDataObjectSearchServiceStub.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonDataObjectSearchServiceStub.java
index 806c143d4d31..a451290aa276 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonDataObjectSearchServiceStub.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonDataObjectSearchServiceStub.java
@@ -53,6 +53,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataObjectSearchServiceStub extends DataObjectSearchServiceStub {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonDataObjectServiceCallableFactory.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonDataObjectServiceCallableFactory.java
index e424471b0105..c84f6663afcd 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonDataObjectServiceCallableFactory.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonDataObjectServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataObjectServiceCallableFactory
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonDataObjectServiceStub.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonDataObjectServiceStub.java
index 96f333ab0ed5..ce51e3d663ee 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonDataObjectServiceStub.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonDataObjectServiceStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonDataObjectServiceStub extends DataObjectServiceStub {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonVectorSearchServiceCallableFactory.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonVectorSearchServiceCallableFactory.java
index ab81c0cd98ba..e1e9d5327231 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonVectorSearchServiceCallableFactory.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonVectorSearchServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonVectorSearchServiceCallableFactory
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonVectorSearchServiceStub.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonVectorSearchServiceStub.java
index f55ed9bb91e4..812f4c8d0c72 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonVectorSearchServiceStub.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/HttpJsonVectorSearchServiceStub.java
@@ -73,6 +73,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -80,6 +81,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonVectorSearchServiceStub extends VectorSearchServiceStub {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/VectorSearchServiceStub.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/VectorSearchServiceStub.java
index 9c3b5d2d24bb..c66fab84c507 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/VectorSearchServiceStub.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/VectorSearchServiceStub.java
@@ -53,6 +53,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class VectorSearchServiceStub implements BackgroundResource {
diff --git a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/VectorSearchServiceStubSettings.java b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/VectorSearchServiceStubSettings.java
index b643fe8f1fd1..c5dc1a00734c 100644
--- a/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/VectorSearchServiceStubSettings.java
+++ b/java-vectorsearch/google-cloud-vectorsearch/src/main/java/com/google/cloud/vectorsearch/v1beta/stub/VectorSearchServiceStubSettings.java
@@ -86,6 +86,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -164,6 +165,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-vectorsearch/proto-google-cloud-vectorsearch-v1/src/main/java/com/google/cloud/vectorsearch/v1/CollectionName.java b/java-vectorsearch/proto-google-cloud-vectorsearch-v1/src/main/java/com/google/cloud/vectorsearch/v1/CollectionName.java
index 1dcc8da9e693..0faf9e576456 100644
--- a/java-vectorsearch/proto-google-cloud-vectorsearch-v1/src/main/java/com/google/cloud/vectorsearch/v1/CollectionName.java
+++ b/java-vectorsearch/proto-google-cloud-vectorsearch-v1/src/main/java/com/google/cloud/vectorsearch/v1/CollectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CollectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_COLLECTION =
diff --git a/java-vectorsearch/proto-google-cloud-vectorsearch-v1/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectName.java b/java-vectorsearch/proto-google-cloud-vectorsearch-v1/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectName.java
index 5dbdcd42b47c..8d3cf12e9f80 100644
--- a/java-vectorsearch/proto-google-cloud-vectorsearch-v1/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectName.java
+++ b/java-vectorsearch/proto-google-cloud-vectorsearch-v1/src/main/java/com/google/cloud/vectorsearch/v1/DataObjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataObjectName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_COLLECTION_DATAOBJECT =
diff --git a/java-vectorsearch/proto-google-cloud-vectorsearch-v1/src/main/java/com/google/cloud/vectorsearch/v1/IndexName.java b/java-vectorsearch/proto-google-cloud-vectorsearch-v1/src/main/java/com/google/cloud/vectorsearch/v1/IndexName.java
index 6aae9f35ea6f..caf748662bb4 100644
--- a/java-vectorsearch/proto-google-cloud-vectorsearch-v1/src/main/java/com/google/cloud/vectorsearch/v1/IndexName.java
+++ b/java-vectorsearch/proto-google-cloud-vectorsearch-v1/src/main/java/com/google/cloud/vectorsearch/v1/IndexName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IndexName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_COLLECTION_INDEX =
diff --git a/java-vectorsearch/proto-google-cloud-vectorsearch-v1/src/main/java/com/google/cloud/vectorsearch/v1/LocationName.java b/java-vectorsearch/proto-google-cloud-vectorsearch-v1/src/main/java/com/google/cloud/vectorsearch/v1/LocationName.java
index 8336e1f91f36..8ba78db0378e 100644
--- a/java-vectorsearch/proto-google-cloud-vectorsearch-v1/src/main/java/com/google/cloud/vectorsearch/v1/LocationName.java
+++ b/java-vectorsearch/proto-google-cloud-vectorsearch-v1/src/main/java/com/google/cloud/vectorsearch/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-vectorsearch/proto-google-cloud-vectorsearch-v1beta/src/main/java/com/google/cloud/vectorsearch/v1beta/CollectionName.java b/java-vectorsearch/proto-google-cloud-vectorsearch-v1beta/src/main/java/com/google/cloud/vectorsearch/v1beta/CollectionName.java
index 2b020b06604e..37f35b1ea874 100644
--- a/java-vectorsearch/proto-google-cloud-vectorsearch-v1beta/src/main/java/com/google/cloud/vectorsearch/v1beta/CollectionName.java
+++ b/java-vectorsearch/proto-google-cloud-vectorsearch-v1beta/src/main/java/com/google/cloud/vectorsearch/v1beta/CollectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CollectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_COLLECTION =
diff --git a/java-vectorsearch/proto-google-cloud-vectorsearch-v1beta/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectName.java b/java-vectorsearch/proto-google-cloud-vectorsearch-v1beta/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectName.java
index 3363b9ad5ef9..d326bb235076 100644
--- a/java-vectorsearch/proto-google-cloud-vectorsearch-v1beta/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectName.java
+++ b/java-vectorsearch/proto-google-cloud-vectorsearch-v1beta/src/main/java/com/google/cloud/vectorsearch/v1beta/DataObjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataObjectName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_COLLECTION_DATAOBJECT =
diff --git a/java-vectorsearch/proto-google-cloud-vectorsearch-v1beta/src/main/java/com/google/cloud/vectorsearch/v1beta/IndexName.java b/java-vectorsearch/proto-google-cloud-vectorsearch-v1beta/src/main/java/com/google/cloud/vectorsearch/v1beta/IndexName.java
index 68ea17bfe6f3..bd74c590a2a8 100644
--- a/java-vectorsearch/proto-google-cloud-vectorsearch-v1beta/src/main/java/com/google/cloud/vectorsearch/v1beta/IndexName.java
+++ b/java-vectorsearch/proto-google-cloud-vectorsearch-v1beta/src/main/java/com/google/cloud/vectorsearch/v1beta/IndexName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IndexName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_COLLECTION_INDEX =
diff --git a/java-vectorsearch/proto-google-cloud-vectorsearch-v1beta/src/main/java/com/google/cloud/vectorsearch/v1beta/LocationName.java b/java-vectorsearch/proto-google-cloud-vectorsearch-v1beta/src/main/java/com/google/cloud/vectorsearch/v1beta/LocationName.java
index 168b4848c286..ef0e3ab3a586 100644
--- a/java-vectorsearch/proto-google-cloud-vectorsearch-v1beta/src/main/java/com/google/cloud/vectorsearch/v1beta/LocationName.java
+++ b/java-vectorsearch/proto-google-cloud-vectorsearch-v1beta/src/main/java/com/google/cloud/vectorsearch/v1beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/VideoIntelligenceServiceClient.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/VideoIntelligenceServiceClient.java
index a72b85125e4d..6a49cf1f2269 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/VideoIntelligenceServiceClient.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/VideoIntelligenceServiceClient.java
@@ -29,6 +29,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -140,6 +141,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VideoIntelligenceServiceClient implements BackgroundResource {
   private final VideoIntelligenceServiceSettings settings;
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/VideoIntelligenceServiceSettings.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/VideoIntelligenceServiceSettings.java
index a4ddea125f89..7dd635973a38 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/VideoIntelligenceServiceSettings.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/VideoIntelligenceServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VideoIntelligenceServiceSettings
     extends ClientSettings<VideoIntelligenceServiceSettings> {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/GrpcVideoIntelligenceServiceCallableFactory.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/GrpcVideoIntelligenceServiceCallableFactory.java
index f983dbb0f8e6..277a302f84c0 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/GrpcVideoIntelligenceServiceCallableFactory.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/GrpcVideoIntelligenceServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVideoIntelligenceServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/GrpcVideoIntelligenceServiceStub.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/GrpcVideoIntelligenceServiceStub.java
index 74eb237d6bf0..7465b49d0243 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/GrpcVideoIntelligenceServiceStub.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/GrpcVideoIntelligenceServiceStub.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVideoIntelligenceServiceStub extends VideoIntelligenceServiceStub {
   private static final MethodDescriptor<AnnotateVideoRequest, Operation>
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java
index b89e8d05e06c..47e71b787a3f 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVideoIntelligenceServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/HttpJsonVideoIntelligenceServiceStub.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/HttpJsonVideoIntelligenceServiceStub.java
index facbbf75d384..b1f24a9b5cfb 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/HttpJsonVideoIntelligenceServiceStub.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/HttpJsonVideoIntelligenceServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVideoIntelligenceServiceStub extends VideoIntelligenceServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/VideoIntelligenceServiceStub.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/VideoIntelligenceServiceStub.java
index 9badee55d5cf..26d0c8a4a95b 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/VideoIntelligenceServiceStub.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/VideoIntelligenceServiceStub.java
@@ -25,6 +25,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -32,6 +33,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class VideoIntelligenceServiceStub implements BackgroundResource {
 
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/VideoIntelligenceServiceStubSettings.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/VideoIntelligenceServiceStubSettings.java
index c41fe9bbf685..4676b77082f4 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/VideoIntelligenceServiceStubSettings.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1/stub/VideoIntelligenceServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class VideoIntelligenceServiceStubSettings
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/VideoIntelligenceServiceClient.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/VideoIntelligenceServiceClient.java
index 1f0c0d1ebcea..b8c3e5cad04d 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/VideoIntelligenceServiceClient.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/VideoIntelligenceServiceClient.java
@@ -29,6 +29,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -140,6 +141,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VideoIntelligenceServiceClient implements BackgroundResource {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/VideoIntelligenceServiceSettings.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/VideoIntelligenceServiceSettings.java
index 5d28feb9c615..a34100e6dd77 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/VideoIntelligenceServiceSettings.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/VideoIntelligenceServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VideoIntelligenceServiceSettings
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/GrpcVideoIntelligenceServiceCallableFactory.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/GrpcVideoIntelligenceServiceCallableFactory.java
index f3f14005d08a..3771b90a6cbe 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/GrpcVideoIntelligenceServiceCallableFactory.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/GrpcVideoIntelligenceServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVideoIntelligenceServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/GrpcVideoIntelligenceServiceStub.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/GrpcVideoIntelligenceServiceStub.java
index 6b0c238fad73..2553d16b9523 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/GrpcVideoIntelligenceServiceStub.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/GrpcVideoIntelligenceServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVideoIntelligenceServiceStub extends VideoIntelligenceServiceStub {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java
index 9f3a26393616..4c75f2368222 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonVideoIntelligenceServiceCallableFactory
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/HttpJsonVideoIntelligenceServiceStub.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/HttpJsonVideoIntelligenceServiceStub.java
index 94f4da9099c8..f6d0b30b1bec 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/HttpJsonVideoIntelligenceServiceStub.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/HttpJsonVideoIntelligenceServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonVideoIntelligenceServiceStub extends VideoIntelligenceServiceStub {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/VideoIntelligenceServiceStub.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/VideoIntelligenceServiceStub.java
index 737eb6fb22b3..8dd335a63a2a 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/VideoIntelligenceServiceStub.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/VideoIntelligenceServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class VideoIntelligenceServiceStub implements BackgroundResource {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/VideoIntelligenceServiceStubSettings.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/VideoIntelligenceServiceStubSettings.java
index e768e3dd5640..473a20bea3b8 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/VideoIntelligenceServiceStubSettings.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1beta2/stub/VideoIntelligenceServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/VideoIntelligenceServiceClient.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/VideoIntelligenceServiceClient.java
index 19fe616d1833..bb1054122ef8 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/VideoIntelligenceServiceClient.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/VideoIntelligenceServiceClient.java
@@ -29,6 +29,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -140,6 +141,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VideoIntelligenceServiceClient implements BackgroundResource {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/VideoIntelligenceServiceSettings.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/VideoIntelligenceServiceSettings.java
index f66b820994d3..513a13204468 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/VideoIntelligenceServiceSettings.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/VideoIntelligenceServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VideoIntelligenceServiceSettings
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/GrpcVideoIntelligenceServiceCallableFactory.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/GrpcVideoIntelligenceServiceCallableFactory.java
index 5e2efc50b8c4..8fc6ffd22935 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/GrpcVideoIntelligenceServiceCallableFactory.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/GrpcVideoIntelligenceServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVideoIntelligenceServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/GrpcVideoIntelligenceServiceStub.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/GrpcVideoIntelligenceServiceStub.java
index ba30befcb19a..e79666d9683a 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/GrpcVideoIntelligenceServiceStub.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/GrpcVideoIntelligenceServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVideoIntelligenceServiceStub extends VideoIntelligenceServiceStub {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java
index c77782a1967d..65cb83b8d9c8 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonVideoIntelligenceServiceCallableFactory
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/HttpJsonVideoIntelligenceServiceStub.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/HttpJsonVideoIntelligenceServiceStub.java
index 130e75b5c0b7..cf6c66990ff6 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/HttpJsonVideoIntelligenceServiceStub.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/HttpJsonVideoIntelligenceServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonVideoIntelligenceServiceStub extends VideoIntelligenceServiceStub {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/VideoIntelligenceServiceStub.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/VideoIntelligenceServiceStub.java
index 51006601b3f1..6f88bb6865d0 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/VideoIntelligenceServiceStub.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/VideoIntelligenceServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class VideoIntelligenceServiceStub implements BackgroundResource {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/VideoIntelligenceServiceStubSettings.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/VideoIntelligenceServiceStubSettings.java
index 93067dde1f24..c1feca7910f4 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/VideoIntelligenceServiceStubSettings.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p1beta1/stub/VideoIntelligenceServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/VideoIntelligenceServiceClient.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/VideoIntelligenceServiceClient.java
index 67bf3922d947..d9d12349932b 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/VideoIntelligenceServiceClient.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/VideoIntelligenceServiceClient.java
@@ -29,6 +29,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -140,6 +141,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VideoIntelligenceServiceClient implements BackgroundResource {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/VideoIntelligenceServiceSettings.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/VideoIntelligenceServiceSettings.java
index 7049cf8f82cd..588a5f5c6197 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/VideoIntelligenceServiceSettings.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/VideoIntelligenceServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VideoIntelligenceServiceSettings
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/GrpcVideoIntelligenceServiceCallableFactory.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/GrpcVideoIntelligenceServiceCallableFactory.java
index fd8aa1d2a84c..74b65e15deb6 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/GrpcVideoIntelligenceServiceCallableFactory.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/GrpcVideoIntelligenceServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVideoIntelligenceServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/GrpcVideoIntelligenceServiceStub.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/GrpcVideoIntelligenceServiceStub.java
index f6e2c4dd55ce..2d1bdc51b6e9 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/GrpcVideoIntelligenceServiceStub.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/GrpcVideoIntelligenceServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVideoIntelligenceServiceStub extends VideoIntelligenceServiceStub {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java
index 4670f354cf77..e214608322a9 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonVideoIntelligenceServiceCallableFactory
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/HttpJsonVideoIntelligenceServiceStub.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/HttpJsonVideoIntelligenceServiceStub.java
index 9cea2af334f8..0c37ffbf27c9 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/HttpJsonVideoIntelligenceServiceStub.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/HttpJsonVideoIntelligenceServiceStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonVideoIntelligenceServiceStub extends VideoIntelligenceServiceStub {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/VideoIntelligenceServiceStub.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/VideoIntelligenceServiceStub.java
index 2a4e9d7c271d..ee2c4d7da750 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/VideoIntelligenceServiceStub.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/VideoIntelligenceServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class VideoIntelligenceServiceStub implements BackgroundResource {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/VideoIntelligenceServiceStubSettings.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/VideoIntelligenceServiceStubSettings.java
index e0fe759a9ba3..845fb06f6fc6 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/VideoIntelligenceServiceStubSettings.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p2beta1/stub/VideoIntelligenceServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/StreamingVideoIntelligenceServiceClient.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/StreamingVideoIntelligenceServiceClient.java
index 2dadf24f24e7..bd941efefb41 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/StreamingVideoIntelligenceServiceClient.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/StreamingVideoIntelligenceServiceClient.java
@@ -24,6 +24,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -114,6 +115,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class StreamingVideoIntelligenceServiceClient implements BackgroundResource {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/StreamingVideoIntelligenceServiceSettings.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/StreamingVideoIntelligenceServiceSettings.java
index 0e455e015904..fd2b4021cc9f 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/StreamingVideoIntelligenceServiceSettings.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/StreamingVideoIntelligenceServiceSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class StreamingVideoIntelligenceServiceSettings
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/VideoIntelligenceServiceClient.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/VideoIntelligenceServiceClient.java
index ab55ee833556..7e6f181f8c53 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/VideoIntelligenceServiceClient.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/VideoIntelligenceServiceClient.java
@@ -29,6 +29,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -140,6 +141,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VideoIntelligenceServiceClient implements BackgroundResource {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/VideoIntelligenceServiceSettings.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/VideoIntelligenceServiceSettings.java
index 8e55e1e5a1f9..35e30cefd713 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/VideoIntelligenceServiceSettings.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/VideoIntelligenceServiceSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class VideoIntelligenceServiceSettings
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/GrpcStreamingVideoIntelligenceServiceCallableFactory.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/GrpcStreamingVideoIntelligenceServiceCallableFactory.java
index c6a0d4f0f939..a91eb99ca736 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/GrpcStreamingVideoIntelligenceServiceCallableFactory.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/GrpcStreamingVideoIntelligenceServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcStreamingVideoIntelligenceServiceCallableFactory
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/GrpcStreamingVideoIntelligenceServiceStub.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/GrpcStreamingVideoIntelligenceServiceStub.java
index d0718558646c..8b43f43f96f3 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/GrpcStreamingVideoIntelligenceServiceStub.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/GrpcStreamingVideoIntelligenceServiceStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcStreamingVideoIntelligenceServiceStub
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/GrpcVideoIntelligenceServiceCallableFactory.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/GrpcVideoIntelligenceServiceCallableFactory.java
index 2e76aa3518ff..4c887d8ac919 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/GrpcVideoIntelligenceServiceCallableFactory.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/GrpcVideoIntelligenceServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVideoIntelligenceServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/GrpcVideoIntelligenceServiceStub.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/GrpcVideoIntelligenceServiceStub.java
index b7337f3556b3..f5bf27acf961 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/GrpcVideoIntelligenceServiceStub.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/GrpcVideoIntelligenceServiceStub.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcVideoIntelligenceServiceStub extends VideoIntelligenceServiceStub {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java
index 52f3675da767..68aec7ac2dff 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/HttpJsonVideoIntelligenceServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonVideoIntelligenceServiceCallableFactory
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/HttpJsonVideoIntelligenceServiceStub.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/HttpJsonVideoIntelligenceServiceStub.java
index 2b39e876fd6d..d26dbe503782 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/HttpJsonVideoIntelligenceServiceStub.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/HttpJsonVideoIntelligenceServiceStub.java
@@ -43,6 +43,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -50,6 +51,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonVideoIntelligenceServiceStub extends VideoIntelligenceServiceStub {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/StreamingVideoIntelligenceServiceStub.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/StreamingVideoIntelligenceServiceStub.java
index b4de1c38976a..623143f263c3 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/StreamingVideoIntelligenceServiceStub.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/StreamingVideoIntelligenceServiceStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.videointelligence.v1p3beta1.StreamingAnnotateVideoRequest;
 import com.google.cloud.videointelligence.v1p3beta1.StreamingAnnotateVideoResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class StreamingVideoIntelligenceServiceStub implements BackgroundResource {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/StreamingVideoIntelligenceServiceStubSettings.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/StreamingVideoIntelligenceServiceStubSettings.java
index 3f924ef37491..26f27b27e3e6 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/StreamingVideoIntelligenceServiceStubSettings.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/StreamingVideoIntelligenceServiceStubSettings.java
@@ -44,6 +44,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -98,6 +99,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/VideoIntelligenceServiceStub.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/VideoIntelligenceServiceStub.java
index 4dec7870277f..fe1e4dafc2bb 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/VideoIntelligenceServiceStub.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/VideoIntelligenceServiceStub.java
@@ -26,6 +26,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class VideoIntelligenceServiceStub implements BackgroundResource {
diff --git a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/VideoIntelligenceServiceStubSettings.java b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/VideoIntelligenceServiceStubSettings.java
index db189198c450..ec7e0a2b2323 100644
--- a/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/VideoIntelligenceServiceStubSettings.java
+++ b/java-video-intelligence/google-cloud-video-intelligence/src/main/java/com/google/cloud/videointelligence/v1p3beta1/stub/VideoIntelligenceServiceStubSettings.java
@@ -52,6 +52,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/LivestreamServiceClient.java b/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/LivestreamServiceClient.java
index bb8b77418bf5..d2b0c4ba85f2 100644
--- a/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/LivestreamServiceClient.java
+++ b/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/LivestreamServiceClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -829,6 +830,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LivestreamServiceClient implements BackgroundResource {
   private final LivestreamServiceSettings settings;
diff --git a/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/LivestreamServiceSettings.java b/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/LivestreamServiceSettings.java
index 4e7e6a8b2beb..196bd2e9cda5 100644
--- a/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/LivestreamServiceSettings.java
+++ b/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/LivestreamServiceSettings.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -124,6 +125,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LivestreamServiceSettings extends ClientSettings<LivestreamServiceSettings> {
 
diff --git a/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/GrpcLivestreamServiceCallableFactory.java b/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/GrpcLivestreamServiceCallableFactory.java
index 7005941f51df..ef0ec8f701a8 100644
--- a/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/GrpcLivestreamServiceCallableFactory.java
+++ b/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/GrpcLivestreamServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLivestreamServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/GrpcLivestreamServiceStub.java b/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/GrpcLivestreamServiceStub.java
index bf5ee4642cce..9665a094071f 100644
--- a/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/GrpcLivestreamServiceStub.java
+++ b/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/GrpcLivestreamServiceStub.java
@@ -94,6 +94,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -101,6 +102,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLivestreamServiceStub extends LivestreamServiceStub {
   private static final MethodDescriptor<CreateChannelRequest, Operation>
diff --git a/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/HttpJsonLivestreamServiceCallableFactory.java b/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/HttpJsonLivestreamServiceCallableFactory.java
index 1fe4302d19fc..f085707eb7e4 100644
--- a/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/HttpJsonLivestreamServiceCallableFactory.java
+++ b/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/HttpJsonLivestreamServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLivestreamServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/HttpJsonLivestreamServiceStub.java b/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/HttpJsonLivestreamServiceStub.java
index 588a63e88414..8a481a5276d4 100644
--- a/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/HttpJsonLivestreamServiceStub.java
+++ b/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/HttpJsonLivestreamServiceStub.java
@@ -105,6 +105,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -112,6 +113,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLivestreamServiceStub extends LivestreamServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/LivestreamServiceStub.java b/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/LivestreamServiceStub.java
index e7feba6dfb78..f7dfb7bb0916 100644
--- a/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/LivestreamServiceStub.java
+++ b/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/LivestreamServiceStub.java
@@ -85,6 +85,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LivestreamServiceStub implements BackgroundResource {
 
diff --git a/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/LivestreamServiceStubSettings.java b/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/LivestreamServiceStubSettings.java
index bbd2bd21e57a..b6c0da9d88f8 100644
--- a/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/LivestreamServiceStubSettings.java
+++ b/java-video-live-stream/google-cloud-live-stream/src/main/java/com/google/cloud/video/livestream/v1/stub/LivestreamServiceStubSettings.java
@@ -119,6 +119,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -197,6 +198,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LivestreamServiceStubSettings extends StubSettings<LivestreamServiceStubSettings> {
diff --git a/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/AssetName.java b/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/AssetName.java
index 4cf65bb93e3e..f7254864fce7 100644
--- a/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/AssetName.java
+++ b/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/AssetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AssetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_ASSET =
diff --git a/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/ChannelName.java b/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/ChannelName.java
index 0dc5557654ea..bc09957e27dc 100644
--- a/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/ChannelName.java
+++ b/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/ChannelName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ChannelName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CHANNEL =
diff --git a/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/ClipName.java b/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/ClipName.java
index 605bc93afa57..21753085267e 100644
--- a/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/ClipName.java
+++ b/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/ClipName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClipName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CHANNEL_CLIP =
diff --git a/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/DvrSessionName.java b/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/DvrSessionName.java
index 6c7421a80fe0..72ee9f3d06ff 100644
--- a/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/DvrSessionName.java
+++ b/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/DvrSessionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DvrSessionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CHANNEL_DVR_SESSION =
diff --git a/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/EventName.java b/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/EventName.java
index de650f9e2933..c124e3879672 100644
--- a/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/EventName.java
+++ b/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/EventName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EventName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CHANNEL_EVENT =
diff --git a/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/InputName.java b/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/InputName.java
index 81549b9b3616..7f8850b2e543 100644
--- a/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/InputName.java
+++ b/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/InputName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InputName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INPUT =
diff --git a/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/LocationName.java b/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/LocationName.java
index f9b302610ae1..f7aecc6acc13 100644
--- a/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/LocationName.java
+++ b/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/PoolName.java b/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/PoolName.java
index c4bb07e2c5df..e48bbb616d4f 100644
--- a/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/PoolName.java
+++ b/java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/PoolName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PoolName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_POOL =
diff --git a/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/VideoStitcherServiceClient.java b/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/VideoStitcherServiceClient.java
index ad3c34bb7073..3907f429c6f9 100644
--- a/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/VideoStitcherServiceClient.java
+++ b/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/VideoStitcherServiceClient.java
@@ -37,6 +37,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -700,6 +701,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VideoStitcherServiceClient implements BackgroundResource {
   private final VideoStitcherServiceSettings settings;
diff --git a/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/VideoStitcherServiceSettings.java b/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/VideoStitcherServiceSettings.java
index 4eb88e499849..617e490e6b72 100644
--- a/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/VideoStitcherServiceSettings.java
+++ b/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/VideoStitcherServiceSettings.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VideoStitcherServiceSettings extends ClientSettings<VideoStitcherServiceSettings> {
 
diff --git a/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/stub/GrpcVideoStitcherServiceCallableFactory.java b/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/stub/GrpcVideoStitcherServiceCallableFactory.java
index f67a7ed7f5e7..12999ca1299f 100644
--- a/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/stub/GrpcVideoStitcherServiceCallableFactory.java
+++ b/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/stub/GrpcVideoStitcherServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVideoStitcherServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/stub/GrpcVideoStitcherServiceStub.java b/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/stub/GrpcVideoStitcherServiceStub.java
index 7595dca0b831..11dc36f2a394 100644
--- a/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/stub/GrpcVideoStitcherServiceStub.java
+++ b/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/stub/GrpcVideoStitcherServiceStub.java
@@ -87,6 +87,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -94,6 +95,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVideoStitcherServiceStub extends VideoStitcherServiceStub {
   private static final MethodDescriptor<CreateCdnKeyRequest, Operation>
diff --git a/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/stub/VideoStitcherServiceStub.java b/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/stub/VideoStitcherServiceStub.java
index 72b80116ecd5..d9b4e5ccb361 100644
--- a/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/stub/VideoStitcherServiceStub.java
+++ b/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/stub/VideoStitcherServiceStub.java
@@ -78,6 +78,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class VideoStitcherServiceStub implements BackgroundResource {
 
diff --git a/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/stub/VideoStitcherServiceStubSettings.java b/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/stub/VideoStitcherServiceStubSettings.java
index be384457d44e..4a1f3b9e4dc1 100644
--- a/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/stub/VideoStitcherServiceStubSettings.java
+++ b/java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/stub/VideoStitcherServiceStubSettings.java
@@ -108,6 +108,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -186,6 +187,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class VideoStitcherServiceStubSettings
diff --git a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/CdnKeyName.java b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/CdnKeyName.java
index 344891715dc8..5c0c62f7cf22 100644
--- a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/CdnKeyName.java
+++ b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/CdnKeyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CdnKeyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CDN_KEY =
diff --git a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/LiveAdTagDetailName.java b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/LiveAdTagDetailName.java
index 0bb72e19746e..0a5f8969d122 100644
--- a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/LiveAdTagDetailName.java
+++ b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/LiveAdTagDetailName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LiveAdTagDetailName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_LIVE_SESSION_LIVE_AD_TAG_DETAIL =
diff --git a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/LiveConfigName.java b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/LiveConfigName.java
index 37a9a10de22d..3bf4f0790220 100644
--- a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/LiveConfigName.java
+++ b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/LiveConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LiveConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_LIVE_CONFIG =
diff --git a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/LiveSessionName.java b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/LiveSessionName.java
index 5ffc97d350d6..162c2ae8e0d2 100644
--- a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/LiveSessionName.java
+++ b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/LiveSessionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LiveSessionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_LIVE_SESSION =
diff --git a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/LocationName.java b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/LocationName.java
index 591919f387ba..17213b1ca07a 100644
--- a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/LocationName.java
+++ b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/SlateName.java b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/SlateName.java
index 0782b223193a..6a0aab8a0e9a 100644
--- a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/SlateName.java
+++ b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/SlateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SlateName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SLATE =
diff --git a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/VodAdTagDetailName.java b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/VodAdTagDetailName.java
index 4af8bfed81d9..5fb3dd19f423 100644
--- a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/VodAdTagDetailName.java
+++ b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/VodAdTagDetailName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VodAdTagDetailName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_VOD_SESSION_VOD_AD_TAG_DETAIL =
diff --git a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/VodConfigName.java b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/VodConfigName.java
index 4a81dab79049..2d3ac9568f95 100644
--- a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/VodConfigName.java
+++ b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/VodConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VodConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_VOD_CONFIG =
diff --git a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/VodSessionName.java b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/VodSessionName.java
index 0820eb71d212..1ada75cf0cba 100644
--- a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/VodSessionName.java
+++ b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/VodSessionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VodSessionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_VOD_SESSION =
diff --git a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/VodStitchDetailName.java b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/VodStitchDetailName.java
index eb0f1c0a2909..a4a41750f651 100644
--- a/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/VodStitchDetailName.java
+++ b/java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/VodStitchDetailName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VodStitchDetailName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_VOD_SESSION_VOD_STITCH_DETAIL =
diff --git a/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/TranscoderServiceClient.java b/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/TranscoderServiceClient.java
index a2b70ecf52e0..db7daa04e359 100644
--- a/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/TranscoderServiceClient.java
+++ b/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/TranscoderServiceClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -280,6 +281,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TranscoderServiceClient implements BackgroundResource {
   private final TranscoderServiceSettings settings;
diff --git a/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/TranscoderServiceSettings.java b/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/TranscoderServiceSettings.java
index 71a43ee42a90..ba31f8c4fc80 100644
--- a/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/TranscoderServiceSettings.java
+++ b/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/TranscoderServiceSettings.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -87,6 +88,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TranscoderServiceSettings extends ClientSettings<TranscoderServiceSettings> {
 
diff --git a/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/GrpcTranscoderServiceCallableFactory.java b/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/GrpcTranscoderServiceCallableFactory.java
index d01a6ac13901..9206ae195cc1 100644
--- a/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/GrpcTranscoderServiceCallableFactory.java
+++ b/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/GrpcTranscoderServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTranscoderServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/GrpcTranscoderServiceStub.java b/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/GrpcTranscoderServiceStub.java
index 62c0088a4e49..388d49f56657 100644
--- a/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/GrpcTranscoderServiceStub.java
+++ b/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/GrpcTranscoderServiceStub.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcTranscoderServiceStub extends TranscoderServiceStub {
   private static final MethodDescriptor<CreateJobRequest, Job> createJobMethodDescriptor =
diff --git a/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/HttpJsonTranscoderServiceCallableFactory.java b/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/HttpJsonTranscoderServiceCallableFactory.java
index 4a0ba3c55071..8221311b5c28 100644
--- a/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/HttpJsonTranscoderServiceCallableFactory.java
+++ b/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/HttpJsonTranscoderServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTranscoderServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/HttpJsonTranscoderServiceStub.java b/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/HttpJsonTranscoderServiceStub.java
index 5dcc906f6f4f..5038e886f03d 100644
--- a/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/HttpJsonTranscoderServiceStub.java
+++ b/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/HttpJsonTranscoderServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonTranscoderServiceStub extends TranscoderServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/TranscoderServiceStub.java b/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/TranscoderServiceStub.java
index a038b616b509..102c6589c137 100644
--- a/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/TranscoderServiceStub.java
+++ b/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/TranscoderServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.cloud.video.transcoder.v1.ListJobsResponse;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class TranscoderServiceStub implements BackgroundResource {
 
diff --git a/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/TranscoderServiceStubSettings.java b/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/TranscoderServiceStubSettings.java
index dce134c92a8f..74170227ad66 100644
--- a/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/TranscoderServiceStubSettings.java
+++ b/java-video-transcoder/google-cloud-video-transcoder/src/main/java/com/google/cloud/video/transcoder/v1/stub/TranscoderServiceStubSettings.java
@@ -67,6 +67,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class TranscoderServiceStubSettings extends StubSettings<TranscoderServiceStubSettings> {
diff --git a/java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/JobName.java b/java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/JobName.java
index 061b356b5eba..391b75b3b88b 100644
--- a/java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/JobName.java
+++ b/java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/JobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_JOB =
diff --git a/java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/JobTemplateName.java b/java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/JobTemplateName.java
index e40f0069f3c5..0fd04c91785f 100644
--- a/java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/JobTemplateName.java
+++ b/java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/JobTemplateName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class JobTemplateName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_JOB_TEMPLATE =
diff --git a/java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/LocationName.java b/java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/LocationName.java
index 671489ebfc39..db25376f25bf 100644
--- a/java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/LocationName.java
+++ b/java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/ImageAnnotatorClient.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/ImageAnnotatorClient.java
index fa48ffadda33..72eadbf090bd 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/ImageAnnotatorClient.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/ImageAnnotatorClient.java
@@ -29,6 +29,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -181,6 +182,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ImageAnnotatorClient implements BackgroundResource {
   private final ImageAnnotatorSettings settings;
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/ImageAnnotatorSettings.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/ImageAnnotatorSettings.java
index ed14e9224155..f0157254002b 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/ImageAnnotatorSettings.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/ImageAnnotatorSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ImageAnnotatorSettings extends ClientSettings<ImageAnnotatorSettings> {
 
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/ProductSearchClient.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/ProductSearchClient.java
index 302ba1046ff6..4fd74413dedf 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/ProductSearchClient.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/ProductSearchClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -585,6 +586,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductSearchClient implements BackgroundResource {
   private final ProductSearchSettings settings;
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/ProductSearchSettings.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/ProductSearchSettings.java
index 9c9d5b4914d9..d80adb043619 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/ProductSearchSettings.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/ProductSearchSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductSearchSettings extends ClientSettings<ProductSearchSettings> {
 
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/GrpcImageAnnotatorCallableFactory.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/GrpcImageAnnotatorCallableFactory.java
index 1c1b5d1f2bdc..270bc67f2859 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/GrpcImageAnnotatorCallableFactory.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/GrpcImageAnnotatorCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcImageAnnotatorCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/GrpcImageAnnotatorStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/GrpcImageAnnotatorStub.java
index baacb69858b6..48d1bc756c85 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/GrpcImageAnnotatorStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/GrpcImageAnnotatorStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcImageAnnotatorStub extends ImageAnnotatorStub {
   private static final MethodDescriptor<BatchAnnotateImagesRequest, BatchAnnotateImagesResponse>
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/GrpcProductSearchCallableFactory.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/GrpcProductSearchCallableFactory.java
index 01a567a81a71..577101b09b49 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/GrpcProductSearchCallableFactory.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/GrpcProductSearchCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcProductSearchCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/GrpcProductSearchStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/GrpcProductSearchStub.java
index 59c59686394d..d79292ff2a11 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/GrpcProductSearchStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/GrpcProductSearchStub.java
@@ -65,6 +65,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcProductSearchStub extends ProductSearchStub {
   private static final MethodDescriptor<CreateProductSetRequest, ProductSet>
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/HttpJsonImageAnnotatorCallableFactory.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/HttpJsonImageAnnotatorCallableFactory.java
index 6abccfbaece9..a6cb54376cfa 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/HttpJsonImageAnnotatorCallableFactory.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/HttpJsonImageAnnotatorCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonImageAnnotatorCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/HttpJsonImageAnnotatorStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/HttpJsonImageAnnotatorStub.java
index 8b4d68c5f0d1..e2611d253c00 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/HttpJsonImageAnnotatorStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/HttpJsonImageAnnotatorStub.java
@@ -51,6 +51,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -58,6 +59,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonImageAnnotatorStub extends ImageAnnotatorStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/HttpJsonProductSearchCallableFactory.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/HttpJsonProductSearchCallableFactory.java
index 14bd0c1f0062..3078d19a8637 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/HttpJsonProductSearchCallableFactory.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/HttpJsonProductSearchCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProductSearchCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/HttpJsonProductSearchStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/HttpJsonProductSearchStub.java
index e2222603c35b..b208133ea730 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/HttpJsonProductSearchStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/HttpJsonProductSearchStub.java
@@ -76,6 +76,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonProductSearchStub extends ProductSearchStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/ImageAnnotatorStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/ImageAnnotatorStub.java
index 519efcb879b7..cd7b24196dc4 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/ImageAnnotatorStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/ImageAnnotatorStub.java
@@ -31,6 +31,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ImageAnnotatorStub implements BackgroundResource {
 
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/ImageAnnotatorStubSettings.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/ImageAnnotatorStubSettings.java
index 6484f76dec3a..553028bf5038 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/ImageAnnotatorStubSettings.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/ImageAnnotatorStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -135,6 +136,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ImageAnnotatorStubSettings extends StubSettings<ImageAnnotatorStubSettings> {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/ProductSearchStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/ProductSearchStub.java
index 8d937d301044..70598f775067 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/ProductSearchStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/ProductSearchStub.java
@@ -56,6 +56,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ProductSearchStub implements BackgroundResource {
 
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/ProductSearchStubSettings.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/ProductSearchStubSettings.java
index b6e1c0c54a89..38aa29f7bfa7 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/ProductSearchStubSettings.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/stub/ProductSearchStubSettings.java
@@ -90,6 +90,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ProductSearchStubSettings extends StubSettings<ProductSearchStubSettings> {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/ImageAnnotatorClient.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/ImageAnnotatorClient.java
index ed8326c4a302..aeb4c5e8ed10 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/ImageAnnotatorClient.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/ImageAnnotatorClient.java
@@ -25,6 +25,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -127,6 +128,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ImageAnnotatorClient implements BackgroundResource {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/ImageAnnotatorSettings.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/ImageAnnotatorSettings.java
index ecb13b89e8ae..e17c53dae8e0 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/ImageAnnotatorSettings.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/ImageAnnotatorSettings.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ImageAnnotatorSettings extends ClientSettings<ImageAnnotatorSettings> {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/GrpcImageAnnotatorCallableFactory.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/GrpcImageAnnotatorCallableFactory.java
index e03a54b33690..ac86a458c4b8 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/GrpcImageAnnotatorCallableFactory.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/GrpcImageAnnotatorCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcImageAnnotatorCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/GrpcImageAnnotatorStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/GrpcImageAnnotatorStub.java
index 646b1d7dec33..8de7a16ee6a4 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/GrpcImageAnnotatorStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/GrpcImageAnnotatorStub.java
@@ -31,6 +31,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -38,6 +39,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcImageAnnotatorStub extends ImageAnnotatorStub {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/HttpJsonImageAnnotatorCallableFactory.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/HttpJsonImageAnnotatorCallableFactory.java
index 491b72976c0b..fbe260a01fd3 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/HttpJsonImageAnnotatorCallableFactory.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/HttpJsonImageAnnotatorCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonImageAnnotatorCallableFactory
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/HttpJsonImageAnnotatorStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/HttpJsonImageAnnotatorStub.java
index ce954e10c26e..fd8f18b3f12e 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/HttpJsonImageAnnotatorStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/HttpJsonImageAnnotatorStub.java
@@ -38,6 +38,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonImageAnnotatorStub extends ImageAnnotatorStub {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/ImageAnnotatorStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/ImageAnnotatorStub.java
index 190c12747a75..d2c5a0351854 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/ImageAnnotatorStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/ImageAnnotatorStub.java
@@ -22,6 +22,7 @@
 import com.google.cloud.vision.v1p1beta1.BatchAnnotateImagesRequest;
 import com.google.cloud.vision.v1p1beta1.BatchAnnotateImagesResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -29,6 +30,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ImageAnnotatorStub implements BackgroundResource {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/ImageAnnotatorStubSettings.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/ImageAnnotatorStubSettings.java
index af835c87fa74..3370f27cfe38 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/ImageAnnotatorStubSettings.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p1beta1/stub/ImageAnnotatorStubSettings.java
@@ -46,6 +46,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -97,6 +98,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/ImageAnnotatorClient.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/ImageAnnotatorClient.java
index ea0fc5c340a7..51f7d088cd4b 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/ImageAnnotatorClient.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/ImageAnnotatorClient.java
@@ -29,6 +29,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ImageAnnotatorClient implements BackgroundResource {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/ImageAnnotatorSettings.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/ImageAnnotatorSettings.java
index 8b4922e1c2b8..96c405310134 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/ImageAnnotatorSettings.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/ImageAnnotatorSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ImageAnnotatorSettings extends ClientSettings<ImageAnnotatorSettings> {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/GrpcImageAnnotatorCallableFactory.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/GrpcImageAnnotatorCallableFactory.java
index d1899f20f10e..3933dcf5e75a 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/GrpcImageAnnotatorCallableFactory.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/GrpcImageAnnotatorCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcImageAnnotatorCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/GrpcImageAnnotatorStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/GrpcImageAnnotatorStub.java
index e9718ded6dc5..41adb9a5505b 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/GrpcImageAnnotatorStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/GrpcImageAnnotatorStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcImageAnnotatorStub extends ImageAnnotatorStub {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/HttpJsonImageAnnotatorCallableFactory.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/HttpJsonImageAnnotatorCallableFactory.java
index c44f82b5b455..af5b7bd62de6 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/HttpJsonImageAnnotatorCallableFactory.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/HttpJsonImageAnnotatorCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonImageAnnotatorCallableFactory
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/HttpJsonImageAnnotatorStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/HttpJsonImageAnnotatorStub.java
index cee700423b51..1e9311f7e854 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/HttpJsonImageAnnotatorStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/HttpJsonImageAnnotatorStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonImageAnnotatorStub extends ImageAnnotatorStub {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/ImageAnnotatorStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/ImageAnnotatorStub.java
index 2a04dff2faef..002f73a163d7 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/ImageAnnotatorStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/ImageAnnotatorStub.java
@@ -28,6 +28,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ImageAnnotatorStub implements BackgroundResource {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/ImageAnnotatorStubSettings.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/ImageAnnotatorStubSettings.java
index 514193badd62..1dc7d4e9dac3 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/ImageAnnotatorStubSettings.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p2beta1/stub/ImageAnnotatorStubSettings.java
@@ -54,6 +54,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/ImageAnnotatorClient.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/ImageAnnotatorClient.java
index fdfd6ae86468..32ef8c7b2e62 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/ImageAnnotatorClient.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/ImageAnnotatorClient.java
@@ -29,6 +29,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ImageAnnotatorClient implements BackgroundResource {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/ImageAnnotatorSettings.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/ImageAnnotatorSettings.java
index 4321c53d429c..8c1885d8fcaf 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/ImageAnnotatorSettings.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/ImageAnnotatorSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ImageAnnotatorSettings extends ClientSettings<ImageAnnotatorSettings> {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/ProductSearchClient.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/ProductSearchClient.java
index 31d29014088b..5494e9ed1895 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/ProductSearchClient.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/ProductSearchClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -576,6 +577,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProductSearchClient implements BackgroundResource {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/ProductSearchSettings.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/ProductSearchSettings.java
index c7d00e1e857e..b1f674b0fdc9 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/ProductSearchSettings.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/ProductSearchSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProductSearchSettings extends ClientSettings<ProductSearchSettings> {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/GrpcImageAnnotatorCallableFactory.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/GrpcImageAnnotatorCallableFactory.java
index ea9bb6274f6c..cbcabcf539b9 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/GrpcImageAnnotatorCallableFactory.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/GrpcImageAnnotatorCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcImageAnnotatorCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/GrpcImageAnnotatorStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/GrpcImageAnnotatorStub.java
index 4bbb230b679e..fe1600af8280 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/GrpcImageAnnotatorStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/GrpcImageAnnotatorStub.java
@@ -36,6 +36,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -43,6 +44,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcImageAnnotatorStub extends ImageAnnotatorStub {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/GrpcProductSearchCallableFactory.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/GrpcProductSearchCallableFactory.java
index b15326dac9f6..f25c6489e732 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/GrpcProductSearchCallableFactory.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/GrpcProductSearchCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProductSearchCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/GrpcProductSearchStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/GrpcProductSearchStub.java
index b3f89c088830..022efbb938fc 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/GrpcProductSearchStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/GrpcProductSearchStub.java
@@ -65,6 +65,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -72,6 +73,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProductSearchStub extends ProductSearchStub {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/HttpJsonImageAnnotatorCallableFactory.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/HttpJsonImageAnnotatorCallableFactory.java
index e5095ff932de..9d5447ee8220 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/HttpJsonImageAnnotatorCallableFactory.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/HttpJsonImageAnnotatorCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonImageAnnotatorCallableFactory
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/HttpJsonImageAnnotatorStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/HttpJsonImageAnnotatorStub.java
index 01a076323e63..ef3946d30b76 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/HttpJsonImageAnnotatorStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/HttpJsonImageAnnotatorStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonImageAnnotatorStub extends ImageAnnotatorStub {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/HttpJsonProductSearchCallableFactory.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/HttpJsonProductSearchCallableFactory.java
index 8a47e176d71b..de912cc60627 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/HttpJsonProductSearchCallableFactory.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/HttpJsonProductSearchCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProductSearchCallableFactory
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/HttpJsonProductSearchStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/HttpJsonProductSearchStub.java
index 7e0d7c0a3434..652e5292a6aa 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/HttpJsonProductSearchStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/HttpJsonProductSearchStub.java
@@ -74,6 +74,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -81,6 +82,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProductSearchStub extends ProductSearchStub {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/ImageAnnotatorStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/ImageAnnotatorStub.java
index 7fc4da9dee66..4789dbf06cbf 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/ImageAnnotatorStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/ImageAnnotatorStub.java
@@ -28,6 +28,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ImageAnnotatorStub implements BackgroundResource {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/ImageAnnotatorStubSettings.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/ImageAnnotatorStubSettings.java
index c86162930ab0..93d1b2a178b0 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/ImageAnnotatorStubSettings.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/ImageAnnotatorStubSettings.java
@@ -54,6 +54,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/ProductSearchStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/ProductSearchStub.java
index 2e3d276986b3..fd1eae5dbe88 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/ProductSearchStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/ProductSearchStub.java
@@ -56,6 +56,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ProductSearchStub implements BackgroundResource {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/ProductSearchStubSettings.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/ProductSearchStubSettings.java
index edf257c62d8d..b0260989496a 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/ProductSearchStubSettings.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p3beta1/stub/ProductSearchStubSettings.java
@@ -89,6 +89,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -166,6 +167,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/ImageAnnotatorClient.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/ImageAnnotatorClient.java
index 080bc4a2d93b..6931d92939d9 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/ImageAnnotatorClient.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/ImageAnnotatorClient.java
@@ -29,6 +29,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -181,6 +182,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ImageAnnotatorClient implements BackgroundResource {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/ImageAnnotatorSettings.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/ImageAnnotatorSettings.java
index 9e8d3011eecf..b5b66aa1fa12 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/ImageAnnotatorSettings.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/ImageAnnotatorSettings.java
@@ -33,6 +33,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ImageAnnotatorSettings extends ClientSettings<ImageAnnotatorSettings> {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/ProductSearchClient.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/ProductSearchClient.java
index d59fc228e0a3..226c444deb85 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/ProductSearchClient.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/ProductSearchClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -585,6 +586,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProductSearchClient implements BackgroundResource {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/ProductSearchSettings.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/ProductSearchSettings.java
index fbdfaa8a7ccd..36c2493c67ca 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/ProductSearchSettings.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/ProductSearchSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -115,6 +116,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ProductSearchSettings extends ClientSettings<ProductSearchSettings> {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/GrpcImageAnnotatorCallableFactory.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/GrpcImageAnnotatorCallableFactory.java
index 9db8e8f9b98c..e768fc64bee1 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/GrpcImageAnnotatorCallableFactory.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/GrpcImageAnnotatorCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcImageAnnotatorCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/GrpcImageAnnotatorStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/GrpcImageAnnotatorStub.java
index 30bb258ef63e..09f277ae9560 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/GrpcImageAnnotatorStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/GrpcImageAnnotatorStub.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -47,6 +48,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcImageAnnotatorStub extends ImageAnnotatorStub {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/GrpcProductSearchCallableFactory.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/GrpcProductSearchCallableFactory.java
index dcd5eb2b16f6..ce1dedc998ad 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/GrpcProductSearchCallableFactory.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/GrpcProductSearchCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProductSearchCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/GrpcProductSearchStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/GrpcProductSearchStub.java
index 480d6d0738c5..6524a3f1839a 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/GrpcProductSearchStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/GrpcProductSearchStub.java
@@ -66,6 +66,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcProductSearchStub extends ProductSearchStub {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/HttpJsonImageAnnotatorCallableFactory.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/HttpJsonImageAnnotatorCallableFactory.java
index b5e35f1566ec..d701eaf40a3b 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/HttpJsonImageAnnotatorCallableFactory.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/HttpJsonImageAnnotatorCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonImageAnnotatorCallableFactory
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/HttpJsonImageAnnotatorStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/HttpJsonImageAnnotatorStub.java
index 9aea59f7ecd9..05f7177d4ae4 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/HttpJsonImageAnnotatorStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/HttpJsonImageAnnotatorStub.java
@@ -49,6 +49,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -56,6 +57,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonImageAnnotatorStub extends ImageAnnotatorStub {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/HttpJsonProductSearchCallableFactory.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/HttpJsonProductSearchCallableFactory.java
index 5e4e53b78ceb..8d818185c34f 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/HttpJsonProductSearchCallableFactory.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/HttpJsonProductSearchCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProductSearchCallableFactory
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/HttpJsonProductSearchStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/HttpJsonProductSearchStub.java
index ee1439c5f244..63bc3e6c6294 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/HttpJsonProductSearchStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/HttpJsonProductSearchStub.java
@@ -75,6 +75,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonProductSearchStub extends ProductSearchStub {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/ImageAnnotatorStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/ImageAnnotatorStub.java
index 9a092a67c3ac..4f75b3493dc2 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/ImageAnnotatorStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/ImageAnnotatorStub.java
@@ -32,6 +32,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ImageAnnotatorStub implements BackgroundResource {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/ImageAnnotatorStubSettings.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/ImageAnnotatorStubSettings.java
index 4c69aa1d84d9..b2c5c7af17dc 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/ImageAnnotatorStubSettings.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/ImageAnnotatorStubSettings.java
@@ -58,6 +58,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -135,6 +136,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/ProductSearchStub.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/ProductSearchStub.java
index 60e63a4a3ccf..b30bb2f4e8c3 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/ProductSearchStub.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/ProductSearchStub.java
@@ -57,6 +57,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ProductSearchStub implements BackgroundResource {
diff --git a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/ProductSearchStubSettings.java b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/ProductSearchStubSettings.java
index c71e3b700dc4..73d8680594da 100644
--- a/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/ProductSearchStubSettings.java
+++ b/java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/ProductSearchStubSettings.java
@@ -90,6 +90,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/LocationName.java b/java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/LocationName.java
index 082bdff7a08d..c4b7a2b549ef 100644
--- a/java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/LocationName.java
+++ b/java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/ProductName.java b/java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/ProductName.java
index 635099a2c139..38f3965e8adc 100644
--- a/java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/ProductName.java
+++ b/java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/ProductName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRODUCT =
diff --git a/java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/ProductSetName.java b/java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/ProductSetName.java
index 66547db6b24d..784f617db961 100644
--- a/java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/ProductSetName.java
+++ b/java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/ProductSetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductSetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRODUCT_SET =
diff --git a/java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/ReferenceImageName.java b/java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/ReferenceImageName.java
index a573587a602e..d8abdccc9aed 100644
--- a/java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/ReferenceImageName.java
+++ b/java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/ReferenceImageName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReferenceImageName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRODUCT_REFERENCE_IMAGE =
diff --git a/java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/LocationName.java b/java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/LocationName.java
index 650834a10141..0f5ca8d6451d 100644
--- a/java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/LocationName.java
+++ b/java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/ProductName.java b/java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/ProductName.java
index ad71e3ca2807..f22b9fd5a137 100644
--- a/java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/ProductName.java
+++ b/java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/ProductName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRODUCT =
diff --git a/java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/ProductSetName.java b/java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/ProductSetName.java
index c6685ac34989..7844b5a442d0 100644
--- a/java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/ProductSetName.java
+++ b/java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/ProductSetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductSetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRODUCT_SET =
diff --git a/java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/ReferenceImageName.java b/java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/ReferenceImageName.java
index 31b776b1f7d8..d78dcd866a9a 100644
--- a/java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/ReferenceImageName.java
+++ b/java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/ReferenceImageName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReferenceImageName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRODUCT_REFERENCE_IMAGE =
diff --git a/java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/LocationName.java b/java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/LocationName.java
index 97333260930f..07671cfdafd2 100644
--- a/java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/LocationName.java
+++ b/java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/ProductName.java b/java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/ProductName.java
index d33e275d3ff1..380461c2bbdc 100644
--- a/java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/ProductName.java
+++ b/java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/ProductName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRODUCT =
diff --git a/java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/ProductSetName.java b/java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/ProductSetName.java
index 98fa4c466f8d..e7f5d3bc8522 100644
--- a/java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/ProductSetName.java
+++ b/java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/ProductSetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProductSetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRODUCT_SET =
diff --git a/java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/ReferenceImageName.java b/java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/ReferenceImageName.java
index b79584ed0d6f..4cf1fee4300d 100644
--- a/java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/ReferenceImageName.java
+++ b/java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/ReferenceImageName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReferenceImageName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRODUCT_REFERENCE_IMAGE =
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/AppPlatformClient.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/AppPlatformClient.java
index 0eb697fb13d3..90c8743f9ed4 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/AppPlatformClient.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/AppPlatformClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -667,6 +668,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppPlatformClient implements BackgroundResource {
   private final AppPlatformSettings settings;
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/AppPlatformSettings.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/AppPlatformSettings.java
index 90000fc4e3db..d0f2e91bee4d 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/AppPlatformSettings.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/AppPlatformSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AppPlatformSettings extends ClientSettings<AppPlatformSettings> {
 
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/HealthCheckServiceClient.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/HealthCheckServiceClient.java
index 7c825506ccde..ed3a84dd8ed0 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/HealthCheckServiceClient.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/HealthCheckServiceClient.java
@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -171,6 +172,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HealthCheckServiceClient implements BackgroundResource {
   private final HealthCheckServiceSettings settings;
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/HealthCheckServiceSettings.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/HealthCheckServiceSettings.java
index 0b7f93d8ff2c..cb57613cc3ff 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/HealthCheckServiceSettings.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/HealthCheckServiceSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HealthCheckServiceSettings extends ClientSettings<HealthCheckServiceSettings> {
 
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/LiveVideoAnalyticsClient.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/LiveVideoAnalyticsClient.java
index e6dac9599be2..4c1257499410 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/LiveVideoAnalyticsClient.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/LiveVideoAnalyticsClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -513,6 +514,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LiveVideoAnalyticsClient implements BackgroundResource {
   private final LiveVideoAnalyticsSettings settings;
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/LiveVideoAnalyticsSettings.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/LiveVideoAnalyticsSettings.java
index e5e6ffa80b4b..7e0ad6204545 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/LiveVideoAnalyticsSettings.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/LiveVideoAnalyticsSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LiveVideoAnalyticsSettings extends ClientSettings<LiveVideoAnalyticsSettings> {
 
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/StreamingServiceClient.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/StreamingServiceClient.java
index 6cb7d24ace06..02fd542a03ab 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/StreamingServiceClient.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/StreamingServiceClient.java
@@ -36,6 +36,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -232,6 +233,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StreamingServiceClient implements BackgroundResource {
   private final StreamingServiceSettings settings;
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/StreamingServiceSettings.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/StreamingServiceSettings.java
index 69c33665ada5..249ea1d9f0c6 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/StreamingServiceSettings.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/StreamingServiceSettings.java
@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StreamingServiceSettings extends ClientSettings<StreamingServiceSettings> {
 
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/StreamsServiceClient.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/StreamsServiceClient.java
index 35a2636c9de5..ffd1a1ac7b98 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/StreamsServiceClient.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/StreamsServiceClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -607,6 +608,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StreamsServiceClient implements BackgroundResource {
   private final StreamsServiceSettings settings;
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/StreamsServiceSettings.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/StreamsServiceSettings.java
index b65111dcf5d0..ae1714036ed3 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/StreamsServiceSettings.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/StreamsServiceSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -122,6 +123,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StreamsServiceSettings extends ClientSettings<StreamsServiceSettings> {
 
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/WarehouseClient.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/WarehouseClient.java
index 1ee168e4757b..e8c0776c5fdd 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/WarehouseClient.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/WarehouseClient.java
@@ -43,6 +43,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1302,6 +1303,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WarehouseClient implements BackgroundResource {
   private final WarehouseSettings settings;
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/WarehouseSettings.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/WarehouseSettings.java
index 06c60e9931b0..f19fc924a50c 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/WarehouseSettings.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/WarehouseSettings.java
@@ -55,6 +55,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -131,6 +132,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WarehouseSettings extends ClientSettings<WarehouseSettings> {
 
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/AppPlatformStub.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/AppPlatformStub.java
index 21350149ca61..7c1e10d7ee64 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/AppPlatformStub.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/AppPlatformStub.java
@@ -76,6 +76,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -83,6 +84,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class AppPlatformStub implements BackgroundResource {
 
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/AppPlatformStubSettings.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/AppPlatformStubSettings.java
index 2f3f056b1529..310d658bea89 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/AppPlatformStubSettings.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/AppPlatformStubSettings.java
@@ -110,6 +110,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -187,6 +188,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class AppPlatformStubSettings extends StubSettings<AppPlatformStubSettings> {
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcAppPlatformCallableFactory.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcAppPlatformCallableFactory.java
index bb72f72e5c2f..c95e2bbebefb 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcAppPlatformCallableFactory.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcAppPlatformCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAppPlatformCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcAppPlatformStub.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcAppPlatformStub.java
index 732113ce4aef..1c81584fb1ca 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcAppPlatformStub.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcAppPlatformStub.java
@@ -85,6 +85,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -92,6 +93,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcAppPlatformStub extends AppPlatformStub {
   private static final MethodDescriptor<ListApplicationsRequest, ListApplicationsResponse>
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcHealthCheckServiceCallableFactory.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcHealthCheckServiceCallableFactory.java
index d2aac4599b8b..d75b5f323e19 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcHealthCheckServiceCallableFactory.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcHealthCheckServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcHealthCheckServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcHealthCheckServiceStub.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcHealthCheckServiceStub.java
index 5bab80971733..d1e92e28ad87 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcHealthCheckServiceStub.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcHealthCheckServiceStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcHealthCheckServiceStub extends HealthCheckServiceStub {
   private static final MethodDescriptor<HealthCheckRequest, HealthCheckResponse>
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcLiveVideoAnalyticsCallableFactory.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcLiveVideoAnalyticsCallableFactory.java
index 6565e6d89711..8efaf03134be 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcLiveVideoAnalyticsCallableFactory.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcLiveVideoAnalyticsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLiveVideoAnalyticsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcLiveVideoAnalyticsStub.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcLiveVideoAnalyticsStub.java
index 49fcdcf0de29..c62c6dfbd2d5 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcLiveVideoAnalyticsStub.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcLiveVideoAnalyticsStub.java
@@ -70,6 +70,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -77,6 +78,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcLiveVideoAnalyticsStub extends LiveVideoAnalyticsStub {
   private static final MethodDescriptor<ListPublicOperatorsRequest, ListPublicOperatorsResponse>
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcStreamingServiceCallableFactory.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcStreamingServiceCallableFactory.java
index bebb5b244746..7b2c04c7e83e 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcStreamingServiceCallableFactory.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcStreamingServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcStreamingServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcStreamingServiceStub.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcStreamingServiceStub.java
index 38c96a37c493..d9ea8b03f9ca 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcStreamingServiceStub.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcStreamingServiceStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcStreamingServiceStub extends StreamingServiceStub {
   private static final MethodDescriptor<SendPacketsRequest, SendPacketsResponse>
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcStreamsServiceCallableFactory.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcStreamsServiceCallableFactory.java
index 32666fd017cb..116e6fe67485 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcStreamsServiceCallableFactory.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcStreamsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcStreamsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcStreamsServiceStub.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcStreamsServiceStub.java
index bab646da54ce..94270dc4d0b4 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcStreamsServiceStub.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcStreamsServiceStub.java
@@ -77,6 +77,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -84,6 +85,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcStreamsServiceStub extends StreamsServiceStub {
   private static final MethodDescriptor<ListClustersRequest, ListClustersResponse>
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcWarehouseCallableFactory.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcWarehouseCallableFactory.java
index 6d5cd1032e24..a16971d395af 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcWarehouseCallableFactory.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcWarehouseCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWarehouseCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcWarehouseStub.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcWarehouseStub.java
index 9f216c3f3dfd..469e06e15589 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcWarehouseStub.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/GrpcWarehouseStub.java
@@ -169,6 +169,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -176,6 +177,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWarehouseStub extends WarehouseStub {
   private static final MethodDescriptor<CreateAssetRequest, Asset> createAssetMethodDescriptor =
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HealthCheckServiceStub.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HealthCheckServiceStub.java
index 3d4d1acc3dfe..e6a16f968b11 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HealthCheckServiceStub.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HealthCheckServiceStub.java
@@ -27,6 +27,7 @@
 import com.google.cloud.visionai.v1.HealthCheckRequest;
 import com.google.cloud.visionai.v1.HealthCheckResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class HealthCheckServiceStub implements BackgroundResource {
 
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HealthCheckServiceStubSettings.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HealthCheckServiceStubSettings.java
index dcae160d2cd3..164f0d02ea89 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HealthCheckServiceStubSettings.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HealthCheckServiceStubSettings.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -110,6 +111,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class HealthCheckServiceStubSettings extends StubSettings<HealthCheckServiceStubSettings> {
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonAppPlatformCallableFactory.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonAppPlatformCallableFactory.java
index 32239d73a759..73df1415d97c 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonAppPlatformCallableFactory.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonAppPlatformCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAppPlatformCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonAppPlatformStub.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonAppPlatformStub.java
index 365c0b41025f..5345cf7cfd16 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonAppPlatformStub.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonAppPlatformStub.java
@@ -96,6 +96,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -103,6 +104,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonAppPlatformStub extends AppPlatformStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonHealthCheckServiceCallableFactory.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonHealthCheckServiceCallableFactory.java
index 27b04b795626..5cbb8ec33e5c 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonHealthCheckServiceCallableFactory.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonHealthCheckServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonHealthCheckServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonHealthCheckServiceStub.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonHealthCheckServiceStub.java
index e07a63a9d9b0..d7220bfa10b8 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonHealthCheckServiceStub.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonHealthCheckServiceStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonHealthCheckServiceStub extends HealthCheckServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonLiveVideoAnalyticsCallableFactory.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonLiveVideoAnalyticsCallableFactory.java
index ebf8e61fe8f6..8e7a0376cbe5 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonLiveVideoAnalyticsCallableFactory.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonLiveVideoAnalyticsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLiveVideoAnalyticsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonLiveVideoAnalyticsStub.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonLiveVideoAnalyticsStub.java
index fe84dd4b6045..5db288ff290d 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonLiveVideoAnalyticsStub.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonLiveVideoAnalyticsStub.java
@@ -81,6 +81,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -88,6 +89,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonLiveVideoAnalyticsStub extends LiveVideoAnalyticsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonStreamingServiceCallableFactory.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonStreamingServiceCallableFactory.java
index eb7b8ae9aea2..7f65898938f0 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonStreamingServiceCallableFactory.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonStreamingServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonStreamingServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonStreamingServiceStub.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonStreamingServiceStub.java
index 5d84835b02da..2b82964f7838 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonStreamingServiceStub.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonStreamingServiceStub.java
@@ -54,6 +54,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -61,6 +62,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonStreamingServiceStub extends StreamingServiceStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonStreamsServiceCallableFactory.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonStreamsServiceCallableFactory.java
index 209c3bf39669..f6c99b542f62 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonStreamsServiceCallableFactory.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonStreamsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonStreamsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonStreamsServiceStub.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonStreamsServiceStub.java
index 419e281618f0..810799de0ad8 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonStreamsServiceStub.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonStreamsServiceStub.java
@@ -88,6 +88,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -95,6 +96,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonStreamsServiceStub extends StreamsServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonWarehouseCallableFactory.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonWarehouseCallableFactory.java
index 4881ce8bad4a..1c22422ec067 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonWarehouseCallableFactory.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonWarehouseCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWarehouseCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonWarehouseStub.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonWarehouseStub.java
index a9fe23824abd..76c8c4243143 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonWarehouseStub.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonWarehouseStub.java
@@ -180,6 +180,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -187,6 +188,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWarehouseStub extends WarehouseStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/LiveVideoAnalyticsStub.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/LiveVideoAnalyticsStub.java
index 8ed8f4ca3d5b..d7631704c381 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/LiveVideoAnalyticsStub.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/LiveVideoAnalyticsStub.java
@@ -61,6 +61,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class LiveVideoAnalyticsStub implements BackgroundResource {
 
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/LiveVideoAnalyticsStubSettings.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/LiveVideoAnalyticsStubSettings.java
index 26087176ea40..0666c1970310 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/LiveVideoAnalyticsStubSettings.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/LiveVideoAnalyticsStubSettings.java
@@ -95,6 +95,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -173,6 +174,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class LiveVideoAnalyticsStubSettings extends StubSettings<LiveVideoAnalyticsStubSettings> {
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/StreamingServiceStub.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/StreamingServiceStub.java
index 111963c9e823..6ab519759ea6 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/StreamingServiceStub.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/StreamingServiceStub.java
@@ -37,6 +37,7 @@
 import com.google.cloud.visionai.v1.SendPacketsRequest;
 import com.google.cloud.visionai.v1.SendPacketsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class StreamingServiceStub implements BackgroundResource {
 
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/StreamingServiceStubSettings.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/StreamingServiceStubSettings.java
index cf9431f800c7..6e1371291ef1 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/StreamingServiceStubSettings.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/StreamingServiceStubSettings.java
@@ -68,6 +68,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -119,6 +120,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class StreamingServiceStubSettings extends StubSettings<StreamingServiceStubSettings> {
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/StreamsServiceStub.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/StreamsServiceStub.java
index 158537d714d7..161c9bca4fa4 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/StreamsServiceStub.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/StreamsServiceStub.java
@@ -68,6 +68,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -75,6 +76,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class StreamsServiceStub implements BackgroundResource {
 
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/StreamsServiceStubSettings.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/StreamsServiceStubSettings.java
index 5605b3121396..b90c70c86404 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/StreamsServiceStubSettings.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/StreamsServiceStubSettings.java
@@ -102,6 +102,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -179,6 +180,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class StreamsServiceStubSettings extends StubSettings<StreamsServiceStubSettings> {
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/WarehouseStub.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/WarehouseStub.java
index e754bc5e54fa..465b2e32fe81 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/WarehouseStub.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/WarehouseStub.java
@@ -160,6 +160,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class WarehouseStub implements BackgroundResource {
 
diff --git a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/WarehouseStubSettings.java b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/WarehouseStubSettings.java
index b1208597db0f..44ca62970488 100644
--- a/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/WarehouseStubSettings.java
+++ b/java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/WarehouseStubSettings.java
@@ -197,6 +197,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -273,6 +274,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class WarehouseStubSettings extends StubSettings<WarehouseStubSettings> {
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AnalysisName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AnalysisName.java
index 1fd3c2069487..67fbd23f53f6 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AnalysisName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AnalysisName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnalysisName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER_ANALYSIS =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AnnotationName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AnnotationName.java
index c512cbad3425..f54a1658e9ef 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AnnotationName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AnnotationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AnnotationName implements ResourceName {
   private static final PathTemplate PROJECT_NUMBER_LOCATION_CORPUS_ASSET_ANNOTATION =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ApplicationName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ApplicationName.java
index 4b0972db3227..1fe75cdf24ff 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ApplicationName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ApplicationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ApplicationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APPLICATION =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AssetName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AssetName.java
index 773d78963bc3..86b09e6ddd1e 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AssetName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AssetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class AssetName implements ResourceName {
   private static final PathTemplate PROJECT_NUMBER_LOCATION_CORPUS_ASSET =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ClusterName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ClusterName.java
index 79230d684be1..7282b135487d 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ClusterName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/CollectionName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/CollectionName.java
index 72cfd66214c3..a1b64f271b6b 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/CollectionName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/CollectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CollectionName implements ResourceName {
   private static final PathTemplate PROJECT_NUMBER_LOCATION_CORPUS_COLLECTION =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/CorpusName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/CorpusName.java
index c135449051a6..3169064b2f5b 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/CorpusName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/CorpusName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CorpusName implements ResourceName {
   private static final PathTemplate PROJECT_NUMBER_LOCATION_CORPUS =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/DataSchemaName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/DataSchemaName.java
index d82ab7379445..7b63562bdb09 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/DataSchemaName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/DataSchemaName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DataSchemaName implements ResourceName {
   private static final PathTemplate PROJECT_NUMBER_LOCATION_CORPUS_DATA_SCHEMA =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/DraftName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/DraftName.java
index ad2f807caf9b..be1949d8d225 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/DraftName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/DraftName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DraftName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APPLICATION_DRAFT =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/EventName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/EventName.java
index 000dc8bf1fc8..e32c870f1a42 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/EventName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/EventName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EventName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER_EVENT =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/IndexEndpointName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/IndexEndpointName.java
index b8743927760d..dfddac358b7c 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/IndexEndpointName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/IndexEndpointName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IndexEndpointName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_INDEX_ENDPOINT =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/IndexName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/IndexName.java
index dc89aa0b4381..986904a48986 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/IndexName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/IndexName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class IndexName implements ResourceName {
   private static final PathTemplate PROJECT_NUMBER_LOCATION_CORPUS_INDEX =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/InstanceName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/InstanceName.java
index 895899578f97..e33a11901b83 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/InstanceName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/InstanceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class InstanceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_APPLICATION_INSTANCE =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/LocationName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/LocationName.java
index 44685b10aef9..7b622a32c9e9 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/LocationName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/OperatorName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/OperatorName.java
index 42f9b17f6637..0158856a5130 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/OperatorName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/OperatorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class OperatorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_OPERATOR =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ProcessName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ProcessName.java
index 7ee2d27d7a32..f20703ec5fe0 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ProcessName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ProcessName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProcessName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER_PROCESS =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ProcessorName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ProcessorName.java
index c7e43a28f2f0..29ba86f5f4c6 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ProcessorName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ProcessorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProcessorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PROCESSOR =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SearchConfigName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SearchConfigName.java
index 25c984ea002b..1ac942479590 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SearchConfigName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SearchConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SearchConfigName implements ResourceName {
   private static final PathTemplate PROJECT_NUMBER_LOCATION_CORPUS_SEARCH_CONFIG =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SearchHypernymName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SearchHypernymName.java
index ed16cf1391f8..6185f59c1c8f 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SearchHypernymName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SearchHypernymName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SearchHypernymName implements ResourceName {
   private static final PathTemplate PROJECT_NUMBER_LOCATION_CORPUS_SEARCH_HYPERNYM =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SeriesName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SeriesName.java
index 25223a453546..85b7e3afb661 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SeriesName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SeriesName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SeriesName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER_SERIES =
diff --git a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/StreamName.java b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/StreamName.java
index f65b731ea07d..a368e28fe1ad 100644
--- a/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/StreamName.java
+++ b/java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/StreamName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class StreamName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CLUSTER_STREAM =
diff --git a/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/VmMigrationClient.java b/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/VmMigrationClient.java
index 1223ab3922ba..616ef982f463 100644
--- a/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/VmMigrationClient.java
+++ b/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/VmMigrationClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1357,6 +1358,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VmMigrationClient implements BackgroundResource {
   private final VmMigrationSettings settings;
diff --git a/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/VmMigrationSettings.java b/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/VmMigrationSettings.java
index 33cf4691c7a7..2b96012897b5 100644
--- a/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/VmMigrationSettings.java
+++ b/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/VmMigrationSettings.java
@@ -54,6 +54,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -129,6 +130,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VmMigrationSettings extends ClientSettings<VmMigrationSettings> {
 
diff --git a/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/GrpcVmMigrationCallableFactory.java b/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/GrpcVmMigrationCallableFactory.java
index 871c92155cdb..4a185f4741db 100644
--- a/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/GrpcVmMigrationCallableFactory.java
+++ b/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/GrpcVmMigrationCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVmMigrationCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/GrpcVmMigrationStub.java b/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/GrpcVmMigrationStub.java
index c7b9907e0a80..f322a78b76ef 100644
--- a/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/GrpcVmMigrationStub.java
+++ b/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/GrpcVmMigrationStub.java
@@ -153,6 +153,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -160,6 +161,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVmMigrationStub extends VmMigrationStub {
   private static final MethodDescriptor<ListSourcesRequest, ListSourcesResponse>
diff --git a/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/HttpJsonVmMigrationCallableFactory.java b/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/HttpJsonVmMigrationCallableFactory.java
index 4a738a6a6e40..752464bc6eb2 100644
--- a/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/HttpJsonVmMigrationCallableFactory.java
+++ b/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/HttpJsonVmMigrationCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVmMigrationCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/HttpJsonVmMigrationStub.java b/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/HttpJsonVmMigrationStub.java
index 7934e4a06838..8e4d418f9683 100644
--- a/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/HttpJsonVmMigrationStub.java
+++ b/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/HttpJsonVmMigrationStub.java
@@ -164,6 +164,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -171,6 +172,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVmMigrationStub extends VmMigrationStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/VmMigrationStub.java b/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/VmMigrationStub.java
index 86079148c57c..d89b9a06ac35 100644
--- a/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/VmMigrationStub.java
+++ b/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/VmMigrationStub.java
@@ -144,6 +144,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -151,6 +152,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class VmMigrationStub implements BackgroundResource {
 
diff --git a/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/VmMigrationStubSettings.java b/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/VmMigrationStubSettings.java
index 83a482fd46e5..a92e4034651f 100644
--- a/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/VmMigrationStubSettings.java
+++ b/java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/VmMigrationStubSettings.java
@@ -179,6 +179,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -256,6 +257,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class VmMigrationStubSettings extends StubSettings<VmMigrationStubSettings> {
diff --git a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/CloneJobName.java b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/CloneJobName.java
index 3f8107f46194..8173d4061daf 100644
--- a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/CloneJobName.java
+++ b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/CloneJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CloneJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SOURCE_MIGRATING_VM_CLONE_JOB =
diff --git a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/CutoverJobName.java b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/CutoverJobName.java
index 26396787d1e8..47f187f68887 100644
--- a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/CutoverJobName.java
+++ b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/CutoverJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class CutoverJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SOURCE_MIGRATING_VM_CUTOVER_JOB =
diff --git a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/DatacenterConnectorName.java b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/DatacenterConnectorName.java
index e81748bc233a..3d30cd977e85 100644
--- a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/DatacenterConnectorName.java
+++ b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/DatacenterConnectorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DatacenterConnectorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SOURCE_DATACENTER_CONNECTOR =
diff --git a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/DiskMigrationJobName.java b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/DiskMigrationJobName.java
index 499813a40745..10bdbbdaa534 100644
--- a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/DiskMigrationJobName.java
+++ b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/DiskMigrationJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DiskMigrationJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SOURCE_DISK_MIGRATION_JOB =
diff --git a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/GroupName.java b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/GroupName.java
index afde98ca908d..f7f1917ef4ff 100644
--- a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/GroupName.java
+++ b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/GroupName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GroupName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_GROUP =
diff --git a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/ImageImportJobName.java b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/ImageImportJobName.java
index a92b6465d27d..5f3b977e9172 100644
--- a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/ImageImportJobName.java
+++ b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/ImageImportJobName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ImageImportJobName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_JOB_RESULT =
diff --git a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/ImageImportName.java b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/ImageImportName.java
index 654d5adf97b1..1b86780e88e7 100644
--- a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/ImageImportName.java
+++ b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/ImageImportName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ImageImportName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_JOB =
diff --git a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/LocationName.java b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/LocationName.java
index 469b5af85403..dc3ca83260c9 100644
--- a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/LocationName.java
+++ b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/MigratingVmName.java b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/MigratingVmName.java
index be3140da0da0..0695d3f24a15 100644
--- a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/MigratingVmName.java
+++ b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/MigratingVmName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class MigratingVmName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SOURCE_MIGRATING_VM =
diff --git a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/ReplicationCycleName.java b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/ReplicationCycleName.java
index fa846b13c649..53b3f53758d7 100644
--- a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/ReplicationCycleName.java
+++ b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/ReplicationCycleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ReplicationCycleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SOURCE_MIGRATING_VM_REPLICATION_CYCLE =
diff --git a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/SourceName.java b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/SourceName.java
index 891f10c12f20..6cfb1dffa1c6 100644
--- a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/SourceName.java
+++ b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/SourceName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SourceName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SOURCE =
diff --git a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/TargetProjectName.java b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/TargetProjectName.java
index 40fd97cd4091..3d7146c4d1c2 100644
--- a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/TargetProjectName.java
+++ b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/TargetProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class TargetProjectName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_TARGET_PROJECT =
diff --git a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/UtilizationReportName.java b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/UtilizationReportName.java
index dc7962a1e7cd..dbba5a99aec1 100644
--- a/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/UtilizationReportName.java
+++ b/java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/UtilizationReportName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class UtilizationReportName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_SOURCE_UTILIZATION_REPORT =
diff --git a/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/VmwareEngineClient.java b/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/VmwareEngineClient.java
index c0dca8f92932..78963a0183d6 100644
--- a/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/VmwareEngineClient.java
+++ b/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/VmwareEngineClient.java
@@ -47,6 +47,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -1660,6 +1661,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VmwareEngineClient implements BackgroundResource {
   private final VmwareEngineSettings settings;
diff --git a/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/VmwareEngineSettings.java b/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/VmwareEngineSettings.java
index 42cee490f6db..1bc452cdb1f7 100644
--- a/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/VmwareEngineSettings.java
+++ b/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/VmwareEngineSettings.java
@@ -63,6 +63,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -138,6 +139,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VmwareEngineSettings extends ClientSettings<VmwareEngineSettings> {
 
diff --git a/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/GrpcVmwareEngineCallableFactory.java b/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/GrpcVmwareEngineCallableFactory.java
index cae05b343cc9..fc157ecda4b9 100644
--- a/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/GrpcVmwareEngineCallableFactory.java
+++ b/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/GrpcVmwareEngineCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVmwareEngineCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/GrpcVmwareEngineStub.java b/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/GrpcVmwareEngineStub.java
index 4b5d7a1d293b..2173a03fd595 100644
--- a/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/GrpcVmwareEngineStub.java
+++ b/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/GrpcVmwareEngineStub.java
@@ -169,6 +169,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -176,6 +177,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVmwareEngineStub extends VmwareEngineStub {
   private static final MethodDescriptor<ListPrivateCloudsRequest, ListPrivateCloudsResponse>
diff --git a/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/HttpJsonVmwareEngineCallableFactory.java b/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/HttpJsonVmwareEngineCallableFactory.java
index d715043b42aa..366b528e9ae3 100644
--- a/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/HttpJsonVmwareEngineCallableFactory.java
+++ b/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/HttpJsonVmwareEngineCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVmwareEngineCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/HttpJsonVmwareEngineStub.java b/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/HttpJsonVmwareEngineStub.java
index 6c0847767385..d6127170425b 100644
--- a/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/HttpJsonVmwareEngineStub.java
+++ b/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/HttpJsonVmwareEngineStub.java
@@ -180,6 +180,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -187,6 +188,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVmwareEngineStub extends VmwareEngineStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/VmwareEngineStub.java b/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/VmwareEngineStub.java
index a6acbc89cb86..19d006bae95a 100644
--- a/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/VmwareEngineStub.java
+++ b/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/VmwareEngineStub.java
@@ -160,6 +160,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class VmwareEngineStub implements BackgroundResource {
 
diff --git a/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/VmwareEngineStubSettings.java b/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/VmwareEngineStubSettings.java
index c23d5402cc28..fb1ab5d59e73 100644
--- a/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/VmwareEngineStubSettings.java
+++ b/java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/stub/VmwareEngineStubSettings.java
@@ -195,6 +195,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -272,6 +273,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class VmwareEngineStubSettings extends StubSettings<VmwareEngineStubSettings> {
diff --git a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ClusterName.java b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ClusterName.java
index 586326a51699..8e4259eacce7 100644
--- a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ClusterName.java
+++ b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRIVATE_CLOUD_CLUSTER =
diff --git a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/DnsBindPermissionName.java b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/DnsBindPermissionName.java
index a4b31ae0706c..f631ab962099 100644
--- a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/DnsBindPermissionName.java
+++ b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/DnsBindPermissionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DnsBindPermissionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/DnsForwardingName.java b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/DnsForwardingName.java
index ee46b1cdda9b..e1f6415b3b35 100644
--- a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/DnsForwardingName.java
+++ b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/DnsForwardingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class DnsForwardingName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRIVATE_CLOUD =
diff --git a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ExternalAccessRuleName.java b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ExternalAccessRuleName.java
index 3f26994adeb7..6a31e53fc245 100644
--- a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ExternalAccessRuleName.java
+++ b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ExternalAccessRuleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExternalAccessRuleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NETWORK_POLICY_EXTERNAL_ACCESS_RULE =
diff --git a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ExternalAddressName.java b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ExternalAddressName.java
index ebb35f5ddf5c..af66197b8400 100644
--- a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ExternalAddressName.java
+++ b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ExternalAddressName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExternalAddressName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRIVATE_CLOUD_EXTERNAL_ADDRESS =
diff --git a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/HcxActivationKeyName.java b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/HcxActivationKeyName.java
index b9e875bf3799..4b0079e275f3 100644
--- a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/HcxActivationKeyName.java
+++ b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/HcxActivationKeyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HcxActivationKeyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRIVATE_CLOUD_HCX_ACTIVATION_KEY =
diff --git a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/LocationName.java b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/LocationName.java
index 2ef013eec84c..ce024dd18f49 100644
--- a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/LocationName.java
+++ b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/LoggingServerName.java b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/LoggingServerName.java
index df0500d4bf4e..6222df09f2a7 100644
--- a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/LoggingServerName.java
+++ b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/LoggingServerName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LoggingServerName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRIVATE_CLOUD_LOGGING_SERVER =
diff --git a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ManagementDnsZoneBindingName.java b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ManagementDnsZoneBindingName.java
index b07f4613f20a..3709e199ac89 100644
--- a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ManagementDnsZoneBindingName.java
+++ b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ManagementDnsZoneBindingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ManagementDnsZoneBindingName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRIVATE_CLOUD_MANAGEMENT_DNS_ZONE_BINDING =
diff --git a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/NetworkPeeringName.java b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/NetworkPeeringName.java
index 0e36fb496761..93ffc7f2d7c3 100644
--- a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/NetworkPeeringName.java
+++ b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/NetworkPeeringName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkPeeringName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NETWORK_PEERING =
diff --git a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/NetworkPolicyName.java b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/NetworkPolicyName.java
index f37521c7a907..e48b6e10ab3d 100644
--- a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/NetworkPolicyName.java
+++ b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/NetworkPolicyName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NetworkPolicyName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NETWORK_POLICY =
diff --git a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/NodeName.java b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/NodeName.java
index a59fd39c96a9..85541cbe556b 100644
--- a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/NodeName.java
+++ b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/NodeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NodeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRIVATE_CLOUD_CLUSTER_NODE =
diff --git a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/NodeTypeName.java b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/NodeTypeName.java
index 2aa5d4698fd1..6f315b05ec8e 100644
--- a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/NodeTypeName.java
+++ b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/NodeTypeName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class NodeTypeName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_NODE_TYPE =
diff --git a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/PrivateCloudName.java b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/PrivateCloudName.java
index 6110908a8304..b5c132232b55 100644
--- a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/PrivateCloudName.java
+++ b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/PrivateCloudName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PrivateCloudName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRIVATE_CLOUD =
diff --git a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/PrivateConnectionName.java b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/PrivateConnectionName.java
index 83710687c425..8eba314ec7c0 100644
--- a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/PrivateConnectionName.java
+++ b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/PrivateConnectionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class PrivateConnectionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRIVATE_CONNECTION =
diff --git a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/SubnetName.java b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/SubnetName.java
index c846b95bc013..0fa9839e68af 100644
--- a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/SubnetName.java
+++ b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/SubnetName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SubnetName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_PRIVATE_CLOUD_SUBNET =
diff --git a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/VmwareEngineNetworkName.java b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/VmwareEngineNetworkName.java
index e4cdf93fbde9..47de48d310be 100644
--- a/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/VmwareEngineNetworkName.java
+++ b/java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/VmwareEngineNetworkName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VmwareEngineNetworkName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_VMWARE_ENGINE_NETWORK =
diff --git a/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/VpcAccessServiceClient.java b/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/VpcAccessServiceClient.java
index 12d08de2b885..0082c9527f12 100644
--- a/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/VpcAccessServiceClient.java
+++ b/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/VpcAccessServiceClient.java
@@ -40,6 +40,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -225,6 +226,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VpcAccessServiceClient implements BackgroundResource {
   private final VpcAccessServiceSettings settings;
diff --git a/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/VpcAccessServiceSettings.java b/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/VpcAccessServiceSettings.java
index 71a99a898a77..21cac496d628 100644
--- a/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/VpcAccessServiceSettings.java
+++ b/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/VpcAccessServiceSettings.java
@@ -40,6 +40,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class VpcAccessServiceSettings extends ClientSettings<VpcAccessServiceSettings> {
 
diff --git a/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/GrpcVpcAccessServiceCallableFactory.java b/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/GrpcVpcAccessServiceCallableFactory.java
index 38c522484731..a015f4d90e43 100644
--- a/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/GrpcVpcAccessServiceCallableFactory.java
+++ b/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/GrpcVpcAccessServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVpcAccessServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/GrpcVpcAccessServiceStub.java b/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/GrpcVpcAccessServiceStub.java
index f1252eef853b..afee42d913fd 100644
--- a/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/GrpcVpcAccessServiceStub.java
+++ b/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/GrpcVpcAccessServiceStub.java
@@ -44,6 +44,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcVpcAccessServiceStub extends VpcAccessServiceStub {
   private static final MethodDescriptor<CreateConnectorRequest, Operation>
diff --git a/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/HttpJsonVpcAccessServiceCallableFactory.java b/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/HttpJsonVpcAccessServiceCallableFactory.java
index c87976822c02..a84675c75227 100644
--- a/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/HttpJsonVpcAccessServiceCallableFactory.java
+++ b/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/HttpJsonVpcAccessServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVpcAccessServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/HttpJsonVpcAccessServiceStub.java b/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/HttpJsonVpcAccessServiceStub.java
index be9b943f71a8..589871f5ab87 100644
--- a/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/HttpJsonVpcAccessServiceStub.java
+++ b/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/HttpJsonVpcAccessServiceStub.java
@@ -55,6 +55,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -62,6 +63,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonVpcAccessServiceStub extends VpcAccessServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/VpcAccessServiceStub.java b/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/VpcAccessServiceStub.java
index f538a55524b5..233fc603d4e5 100644
--- a/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/VpcAccessServiceStub.java
+++ b/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/VpcAccessServiceStub.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class VpcAccessServiceStub implements BackgroundResource {
 
diff --git a/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/VpcAccessServiceStubSettings.java b/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/VpcAccessServiceStubSettings.java
index 7301877b9c20..df04b4d4c165 100644
--- a/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/VpcAccessServiceStubSettings.java
+++ b/java-vpcaccess/google-cloud-vpcaccess/src/main/java/com/google/cloud/vpcaccess/v1/stub/VpcAccessServiceStubSettings.java
@@ -70,6 +70,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class VpcAccessServiceStubSettings extends StubSettings<VpcAccessServiceStubSettings> {
diff --git a/java-vpcaccess/proto-google-cloud-vpcaccess-v1/src/main/java/com/google/cloud/vpcaccess/v1/ConnectorName.java b/java-vpcaccess/proto-google-cloud-vpcaccess-v1/src/main/java/com/google/cloud/vpcaccess/v1/ConnectorName.java
index a072ead4eb69..2cf108975335 100644
--- a/java-vpcaccess/proto-google-cloud-vpcaccess-v1/src/main/java/com/google/cloud/vpcaccess/v1/ConnectorName.java
+++ b/java-vpcaccess/proto-google-cloud-vpcaccess-v1/src/main/java/com/google/cloud/vpcaccess/v1/ConnectorName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ConnectorName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_CONNECTOR =
diff --git a/java-vpcaccess/proto-google-cloud-vpcaccess-v1/src/main/java/com/google/cloud/vpcaccess/v1/LocationName.java b/java-vpcaccess/proto-google-cloud-vpcaccess-v1/src/main/java/com/google/cloud/vpcaccess/v1/LocationName.java
index 7c3dbf1d576d..ca7c98d4e903 100644
--- a/java-vpcaccess/proto-google-cloud-vpcaccess-v1/src/main/java/com/google/cloud/vpcaccess/v1/LocationName.java
+++ b/java-vpcaccess/proto-google-cloud-vpcaccess-v1/src/main/java/com/google/cloud/vpcaccess/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/WebRiskServiceClient.java b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/WebRiskServiceClient.java
index 8ff388c5e4c2..f49be9985223 100644
--- a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/WebRiskServiceClient.java
+++ b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/WebRiskServiceClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -225,6 +226,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WebRiskServiceClient implements BackgroundResource {
   private final WebRiskServiceSettings settings;
diff --git a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/WebRiskServiceSettings.java b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/WebRiskServiceSettings.java
index b2c277b2130c..0e3fe76ee924 100644
--- a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/WebRiskServiceSettings.java
+++ b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/WebRiskServiceSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WebRiskServiceSettings extends ClientSettings<WebRiskServiceSettings> {
 
diff --git a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/GrpcWebRiskServiceCallableFactory.java b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/GrpcWebRiskServiceCallableFactory.java
index 98767a552fdb..9421ae7a6f0f 100644
--- a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/GrpcWebRiskServiceCallableFactory.java
+++ b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/GrpcWebRiskServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWebRiskServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/GrpcWebRiskServiceStub.java b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/GrpcWebRiskServiceStub.java
index 493198c48b49..cbaabafa4a28 100644
--- a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/GrpcWebRiskServiceStub.java
+++ b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/GrpcWebRiskServiceStub.java
@@ -41,6 +41,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWebRiskServiceStub extends WebRiskServiceStub {
   private static final MethodDescriptor<ComputeThreatListDiffRequest, ComputeThreatListDiffResponse>
diff --git a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/HttpJsonWebRiskServiceCallableFactory.java b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/HttpJsonWebRiskServiceCallableFactory.java
index 1ce9d6d9166f..4f399aec6007 100644
--- a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/HttpJsonWebRiskServiceCallableFactory.java
+++ b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/HttpJsonWebRiskServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWebRiskServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/HttpJsonWebRiskServiceStub.java b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/HttpJsonWebRiskServiceStub.java
index fecbc8446392..231bc6875dd8 100644
--- a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/HttpJsonWebRiskServiceStub.java
+++ b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/HttpJsonWebRiskServiceStub.java
@@ -52,6 +52,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -59,6 +60,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWebRiskServiceStub extends WebRiskServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/WebRiskServiceStub.java b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/WebRiskServiceStub.java
index 3ab22c72861c..5484161509ab 100644
--- a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/WebRiskServiceStub.java
+++ b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/WebRiskServiceStub.java
@@ -32,6 +32,7 @@
 import com.google.webrisk.v1.SubmitUriMetadata;
 import com.google.webrisk.v1.SubmitUriRequest;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class WebRiskServiceStub implements BackgroundResource {
 
diff --git a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/WebRiskServiceStubSettings.java b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/WebRiskServiceStubSettings.java
index ecd9b2db3d21..31f2510563be 100644
--- a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/WebRiskServiceStubSettings.java
+++ b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1/stub/WebRiskServiceStubSettings.java
@@ -59,6 +59,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -136,6 +137,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class WebRiskServiceStubSettings extends StubSettings<WebRiskServiceStubSettings> {
diff --git a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/WebRiskServiceV1Beta1Client.java b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/WebRiskServiceV1Beta1Client.java
index 39a6dbb79cf8..d6ef28083bd8 100644
--- a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/WebRiskServiceV1Beta1Client.java
+++ b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/WebRiskServiceV1Beta1Client.java
@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -182,6 +183,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class WebRiskServiceV1Beta1Client implements BackgroundResource {
diff --git a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/WebRiskServiceV1Beta1Settings.java b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/WebRiskServiceV1Beta1Settings.java
index 7fd61bc108d2..751cae480923 100644
--- a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/WebRiskServiceV1Beta1Settings.java
+++ b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/WebRiskServiceV1Beta1Settings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -89,6 +90,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class WebRiskServiceV1Beta1Settings extends ClientSettings<WebRiskServiceV1Beta1Settings> {
diff --git a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/GrpcWebRiskServiceV1Beta1CallableFactory.java b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/GrpcWebRiskServiceV1Beta1CallableFactory.java
index a8298ac2ec38..855f5d47ac2b 100644
--- a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/GrpcWebRiskServiceV1Beta1CallableFactory.java
+++ b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/GrpcWebRiskServiceV1Beta1CallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcWebRiskServiceV1Beta1CallableFactory implements GrpcStubCallableFactory {
diff --git a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/GrpcWebRiskServiceV1Beta1Stub.java b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/GrpcWebRiskServiceV1Beta1Stub.java
index 22278f7f4f6b..5b91806b3f42 100644
--- a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/GrpcWebRiskServiceV1Beta1Stub.java
+++ b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/GrpcWebRiskServiceV1Beta1Stub.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcWebRiskServiceV1Beta1Stub extends WebRiskServiceV1Beta1Stub {
diff --git a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/HttpJsonWebRiskServiceV1Beta1CallableFactory.java b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/HttpJsonWebRiskServiceV1Beta1CallableFactory.java
index fefd418d1354..53b43e5047e5 100644
--- a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/HttpJsonWebRiskServiceV1Beta1CallableFactory.java
+++ b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/HttpJsonWebRiskServiceV1Beta1CallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonWebRiskServiceV1Beta1CallableFactory
diff --git a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/HttpJsonWebRiskServiceV1Beta1Stub.java b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/HttpJsonWebRiskServiceV1Beta1Stub.java
index 392fad14dde8..9b763b978d6e 100644
--- a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/HttpJsonWebRiskServiceV1Beta1Stub.java
+++ b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/HttpJsonWebRiskServiceV1Beta1Stub.java
@@ -42,6 +42,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -49,6 +50,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonWebRiskServiceV1Beta1Stub extends WebRiskServiceV1Beta1Stub {
diff --git a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/WebRiskServiceV1Beta1Stub.java b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/WebRiskServiceV1Beta1Stub.java
index e969fa76fed2..c2105d05f9b4 100644
--- a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/WebRiskServiceV1Beta1Stub.java
+++ b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/WebRiskServiceV1Beta1Stub.java
@@ -26,6 +26,7 @@
 import com.google.webrisk.v1beta1.SearchUrisRequest;
 import com.google.webrisk.v1beta1.SearchUrisResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -33,6 +34,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class WebRiskServiceV1Beta1Stub implements BackgroundResource {
diff --git a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/WebRiskServiceV1Beta1StubSettings.java b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/WebRiskServiceV1Beta1StubSettings.java
index 2e5a74b657c3..3a7430bc0958 100644
--- a/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/WebRiskServiceV1Beta1StubSettings.java
+++ b/java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/stub/WebRiskServiceV1Beta1StubSettings.java
@@ -50,6 +50,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -102,6 +103,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-webrisk/proto-google-cloud-webrisk-v1/src/main/java/com/google/webrisk/v1/ProjectName.java b/java-webrisk/proto-google-cloud-webrisk-v1/src/main/java/com/google/webrisk/v1/ProjectName.java
index 95f4ffc20221..6603b7e82c16 100644
--- a/java-webrisk/proto-google-cloud-webrisk-v1/src/main/java/com/google/webrisk/v1/ProjectName.java
+++ b/java-webrisk/proto-google-cloud-webrisk-v1/src/main/java/com/google/webrisk/v1/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/WebSecurityScannerClient.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/WebSecurityScannerClient.java
index c216fa728f46..6518aaedc584 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/WebSecurityScannerClient.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/WebSecurityScannerClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -313,6 +314,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WebSecurityScannerClient implements BackgroundResource {
   private final WebSecurityScannerSettings settings;
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/WebSecurityScannerSettings.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/WebSecurityScannerSettings.java
index 5dc7c2c534dc..2dee867746e8 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/WebSecurityScannerSettings.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/WebSecurityScannerSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WebSecurityScannerSettings extends ClientSettings<WebSecurityScannerSettings> {
 
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/GrpcWebSecurityScannerCallableFactory.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/GrpcWebSecurityScannerCallableFactory.java
index 6e11a52a5570..b749cf34e6f9 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/GrpcWebSecurityScannerCallableFactory.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/GrpcWebSecurityScannerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWebSecurityScannerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/GrpcWebSecurityScannerStub.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/GrpcWebSecurityScannerStub.java
index 0986a4312686..9a431364d30a 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/GrpcWebSecurityScannerStub.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/GrpcWebSecurityScannerStub.java
@@ -56,6 +56,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -63,6 +64,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWebSecurityScannerStub extends WebSecurityScannerStub {
   private static final MethodDescriptor<CreateScanConfigRequest, ScanConfig>
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/HttpJsonWebSecurityScannerCallableFactory.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/HttpJsonWebSecurityScannerCallableFactory.java
index 408ec1756741..415a397a1ecc 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/HttpJsonWebSecurityScannerCallableFactory.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/HttpJsonWebSecurityScannerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWebSecurityScannerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/HttpJsonWebSecurityScannerStub.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/HttpJsonWebSecurityScannerStub.java
index 18d4c91ad93f..a8f0b9a4db36 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/HttpJsonWebSecurityScannerStub.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/HttpJsonWebSecurityScannerStub.java
@@ -63,6 +63,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWebSecurityScannerStub extends WebSecurityScannerStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/WebSecurityScannerStub.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/WebSecurityScannerStub.java
index a95eca9cbd73..158596ed8992 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/WebSecurityScannerStub.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/WebSecurityScannerStub.java
@@ -46,6 +46,7 @@
 import com.google.cloud.websecurityscanner.v1.UpdateScanConfigRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class WebSecurityScannerStub implements BackgroundResource {
 
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/WebSecurityScannerStubSettings.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/WebSecurityScannerStubSettings.java
index 5fccada0e0ae..b39fac4080c2 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/WebSecurityScannerStubSettings.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1/stub/WebSecurityScannerStubSettings.java
@@ -79,6 +79,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class WebSecurityScannerStubSettings extends StubSettings<WebSecurityScannerStubSettings> {
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/WebSecurityScannerClient.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/WebSecurityScannerClient.java
index f7c871c758ea..aa75b3bf8917 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/WebSecurityScannerClient.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/WebSecurityScannerClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -376,6 +377,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class WebSecurityScannerClient implements BackgroundResource {
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/WebSecurityScannerSettings.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/WebSecurityScannerSettings.java
index 009038a78c4c..21e9133a7c73 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/WebSecurityScannerSettings.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/WebSecurityScannerSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class WebSecurityScannerSettings extends ClientSettings<WebSecurityScannerSettings> {
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/GrpcWebSecurityScannerCallableFactory.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/GrpcWebSecurityScannerCallableFactory.java
index a43e6c3034ca..c6b809fa965d 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/GrpcWebSecurityScannerCallableFactory.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/GrpcWebSecurityScannerCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcWebSecurityScannerCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/GrpcWebSecurityScannerStub.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/GrpcWebSecurityScannerStub.java
index fd3650741c58..b5108f41c7a1 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/GrpcWebSecurityScannerStub.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/GrpcWebSecurityScannerStub.java
@@ -57,6 +57,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcWebSecurityScannerStub extends WebSecurityScannerStub {
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/HttpJsonWebSecurityScannerCallableFactory.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/HttpJsonWebSecurityScannerCallableFactory.java
index d2c618e5ab71..59c6d17aa85d 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/HttpJsonWebSecurityScannerCallableFactory.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/HttpJsonWebSecurityScannerCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonWebSecurityScannerCallableFactory
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/HttpJsonWebSecurityScannerStub.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/HttpJsonWebSecurityScannerStub.java
index f53075593a95..432e8930113d 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/HttpJsonWebSecurityScannerStub.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/HttpJsonWebSecurityScannerStub.java
@@ -64,6 +64,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonWebSecurityScannerStub extends WebSecurityScannerStub {
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/WebSecurityScannerStub.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/WebSecurityScannerStub.java
index f6548da85da7..756c0ab2362b 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/WebSecurityScannerStub.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/WebSecurityScannerStub.java
@@ -47,6 +47,7 @@
 import com.google.cloud.websecurityscanner.v1alpha.UpdateScanConfigRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class WebSecurityScannerStub implements BackgroundResource {
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/WebSecurityScannerStubSettings.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/WebSecurityScannerStubSettings.java
index 06d9f8719087..3fbb6cf022cb 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/WebSecurityScannerStubSettings.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/WebSecurityScannerStubSettings.java
@@ -79,6 +79,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/WebSecurityScannerClient.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/WebSecurityScannerClient.java
index 0aed853f0751..cc97c6d2a4d9 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/WebSecurityScannerClient.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/WebSecurityScannerClient.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -376,6 +377,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class WebSecurityScannerClient implements BackgroundResource {
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/WebSecurityScannerSettings.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/WebSecurityScannerSettings.java
index e57b50bfbdfe..93e0ac219cf7 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/WebSecurityScannerSettings.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/WebSecurityScannerSettings.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -91,6 +92,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class WebSecurityScannerSettings extends ClientSettings<WebSecurityScannerSettings> {
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/GrpcWebSecurityScannerCallableFactory.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/GrpcWebSecurityScannerCallableFactory.java
index d42330191a78..31a36f813791 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/GrpcWebSecurityScannerCallableFactory.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/GrpcWebSecurityScannerCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcWebSecurityScannerCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/GrpcWebSecurityScannerStub.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/GrpcWebSecurityScannerStub.java
index 95da2056e01d..992a7a8c01b0 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/GrpcWebSecurityScannerStub.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/GrpcWebSecurityScannerStub.java
@@ -57,6 +57,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcWebSecurityScannerStub extends WebSecurityScannerStub {
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/HttpJsonWebSecurityScannerCallableFactory.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/HttpJsonWebSecurityScannerCallableFactory.java
index 4d6d6d026c03..bcaca8d939a2 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/HttpJsonWebSecurityScannerCallableFactory.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/HttpJsonWebSecurityScannerCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonWebSecurityScannerCallableFactory
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/HttpJsonWebSecurityScannerStub.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/HttpJsonWebSecurityScannerStub.java
index 8a53905da7e3..f95463c43ec9 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/HttpJsonWebSecurityScannerStub.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/HttpJsonWebSecurityScannerStub.java
@@ -64,6 +64,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -71,6 +72,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonWebSecurityScannerStub extends WebSecurityScannerStub {
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/WebSecurityScannerStub.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/WebSecurityScannerStub.java
index 906b0f3689bc..960dcf58a7b7 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/WebSecurityScannerStub.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/WebSecurityScannerStub.java
@@ -47,6 +47,7 @@
 import com.google.cloud.websecurityscanner.v1beta.UpdateScanConfigRequest;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class WebSecurityScannerStub implements BackgroundResource {
diff --git a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/WebSecurityScannerStubSettings.java b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/WebSecurityScannerStubSettings.java
index 1dcd67d21bcd..d199237a9031 100644
--- a/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/WebSecurityScannerStubSettings.java
+++ b/java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1beta/stub/WebSecurityScannerStubSettings.java
@@ -79,6 +79,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -132,6 +133,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/FindingName.java b/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/FindingName.java
index 2364ddae751e..085ae03ebb5e 100644
--- a/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/FindingName.java
+++ b/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/FindingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FindingName implements ResourceName {
   private static final PathTemplate PROJECT_SCAN_CONFIG_SCAN_RUN_FINDING =
diff --git a/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/ProjectName.java b/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/ProjectName.java
index 50cd54824b6e..8942aa33573d 100644
--- a/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/ProjectName.java
+++ b/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/ScanConfigName.java b/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/ScanConfigName.java
index 0005a56a06c7..94ed5bb86fb1 100644
--- a/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/ScanConfigName.java
+++ b/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/ScanConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ScanConfigName implements ResourceName {
   private static final PathTemplate PROJECT_SCAN_CONFIG =
diff --git a/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/ScanRunName.java b/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/ScanRunName.java
index 023815da9d64..f7feffae3918 100644
--- a/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/ScanRunName.java
+++ b/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/ScanRunName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ScanRunName implements ResourceName {
   private static final PathTemplate PROJECT_SCAN_CONFIG_SCAN_RUN =
diff --git a/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/FindingName.java b/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/FindingName.java
index 936cd30a857c..fe7927d4252e 100644
--- a/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/FindingName.java
+++ b/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/FindingName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class FindingName implements ResourceName {
   private static final PathTemplate PROJECT_SCAN_CONFIG_SCAN_RUN_FINDING =
diff --git a/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/ProjectName.java b/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/ProjectName.java
index c109c109c689..7dea75ee9a0e 100644
--- a/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/ProjectName.java
+++ b/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/ProjectName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ProjectName implements ResourceName {
   private static final PathTemplate PROJECT =
diff --git a/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/ScanConfigName.java b/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/ScanConfigName.java
index 9719977fa802..1bd4b9046cc1 100644
--- a/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/ScanConfigName.java
+++ b/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/ScanConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ScanConfigName implements ResourceName {
   private static final PathTemplate PROJECT_SCAN_CONFIG =
diff --git a/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/ScanRunName.java b/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/ScanRunName.java
index 61e0390a79a6..534d3891b824 100644
--- a/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/ScanRunName.java
+++ b/java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/ScanRunName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ScanRunName implements ResourceName {
   private static final PathTemplate PROJECT_SCAN_CONFIG_SCAN_RUN =
diff --git a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/ExecutionsClient.java b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/ExecutionsClient.java
index 6edf31fd5939..2ae37e366f65 100644
--- a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/ExecutionsClient.java
+++ b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/ExecutionsClient.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -194,6 +195,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExecutionsClient implements BackgroundResource {
   private final ExecutionsSettings settings;
diff --git a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/ExecutionsSettings.java b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/ExecutionsSettings.java
index 6714135873a8..f97a6bf804d5 100644
--- a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/ExecutionsSettings.java
+++ b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/ExecutionsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExecutionsSettings extends ClientSettings<ExecutionsSettings> {
 
diff --git a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/ExecutionsStub.java b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/ExecutionsStub.java
index 42754f136b5e..8693c1259847 100644
--- a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/ExecutionsStub.java
+++ b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/ExecutionsStub.java
@@ -27,6 +27,7 @@
 import com.google.cloud.workflows.executions.v1.ListExecutionsRequest;
 import com.google.cloud.workflows.executions.v1.ListExecutionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -34,6 +35,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class ExecutionsStub implements BackgroundResource {
 
diff --git a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/ExecutionsStubSettings.java b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/ExecutionsStubSettings.java
index c334cc92d07c..31cf7eca26ea 100644
--- a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/ExecutionsStubSettings.java
+++ b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/ExecutionsStubSettings.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class ExecutionsStubSettings extends StubSettings<ExecutionsStubSettings> {
diff --git a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/GrpcExecutionsCallableFactory.java b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/GrpcExecutionsCallableFactory.java
index ef12c39d2750..08043aacdf45 100644
--- a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/GrpcExecutionsCallableFactory.java
+++ b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/GrpcExecutionsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcExecutionsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/GrpcExecutionsStub.java b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/GrpcExecutionsStub.java
index 6e12fa3a847e..0bcb7130d7b4 100644
--- a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/GrpcExecutionsStub.java
+++ b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/GrpcExecutionsStub.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcExecutionsStub extends ExecutionsStub {
   private static final MethodDescriptor<ListExecutionsRequest, ListExecutionsResponse>
diff --git a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/HttpJsonExecutionsCallableFactory.java b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/HttpJsonExecutionsCallableFactory.java
index 9773e27c61c9..9622fd5e4edc 100644
--- a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/HttpJsonExecutionsCallableFactory.java
+++ b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/HttpJsonExecutionsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonExecutionsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/HttpJsonExecutionsStub.java b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/HttpJsonExecutionsStub.java
index a392e3f63744..0accd9f78b1e 100644
--- a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/HttpJsonExecutionsStub.java
+++ b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1/stub/HttpJsonExecutionsStub.java
@@ -44,6 +44,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -51,6 +52,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonExecutionsStub extends ExecutionsStub {
   private static final TypeRegistry typeRegistry = TypeRegistry.newBuilder().build();
diff --git a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/ExecutionsClient.java b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/ExecutionsClient.java
index b1b9bc7a14a3..efd077a3c134 100644
--- a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/ExecutionsClient.java
+++ b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/ExecutionsClient.java
@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -195,6 +196,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ExecutionsClient implements BackgroundResource {
diff --git a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/ExecutionsSettings.java b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/ExecutionsSettings.java
index 03462174a6d6..83b7e3b43bb5 100644
--- a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/ExecutionsSettings.java
+++ b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/ExecutionsSettings.java
@@ -34,6 +34,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -85,6 +86,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class ExecutionsSettings extends ClientSettings<ExecutionsSettings> {
diff --git a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/ExecutionsStub.java b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/ExecutionsStub.java
index 33e99d9bec11..c3634570db14 100644
--- a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/ExecutionsStub.java
+++ b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/ExecutionsStub.java
@@ -28,6 +28,7 @@
 import com.google.cloud.workflows.executions.v1beta.ListExecutionsRequest;
 import com.google.cloud.workflows.executions.v1beta.ListExecutionsResponse;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -35,6 +36,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class ExecutionsStub implements BackgroundResource {
diff --git a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/ExecutionsStubSettings.java b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/ExecutionsStubSettings.java
index db581e099dfb..62b96371b95a 100644
--- a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/ExecutionsStubSettings.java
+++ b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/ExecutionsStubSettings.java
@@ -58,6 +58,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -109,6 +110,7 @@
  * Guide](https://docs.cloud.google.com/java/docs/client-retries) for additional support in setting
  * retries.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/GrpcExecutionsCallableFactory.java b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/GrpcExecutionsCallableFactory.java
index 198ce3c25329..ce6e4c1799e6 100644
--- a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/GrpcExecutionsCallableFactory.java
+++ b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/GrpcExecutionsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcExecutionsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/GrpcExecutionsStub.java b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/GrpcExecutionsStub.java
index 549a20837026..65267f9a7aad 100644
--- a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/GrpcExecutionsStub.java
+++ b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/GrpcExecutionsStub.java
@@ -38,6 +38,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcExecutionsStub extends ExecutionsStub {
diff --git a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/HttpJsonExecutionsCallableFactory.java b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/HttpJsonExecutionsCallableFactory.java
index 455dbed3c90e..15478116eabd 100644
--- a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/HttpJsonExecutionsCallableFactory.java
+++ b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/HttpJsonExecutionsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonExecutionsCallableFactory
diff --git a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/HttpJsonExecutionsStub.java b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/HttpJsonExecutionsStub.java
index f70d207e7c20..0a3c00c62fd1 100644
--- a/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/HttpJsonExecutionsStub.java
+++ b/java-workflow-executions/google-cloud-workflow-executions/src/main/java/com/google/cloud/workflows/executions/v1beta/stub/HttpJsonExecutionsStub.java
@@ -45,6 +45,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -52,6 +53,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonExecutionsStub extends ExecutionsStub {
diff --git a/java-workflow-executions/proto-google-cloud-workflow-executions-v1/src/main/java/com/google/cloud/workflows/executions/v1/ExecutionName.java b/java-workflow-executions/proto-google-cloud-workflow-executions-v1/src/main/java/com/google/cloud/workflows/executions/v1/ExecutionName.java
index 139005bc0844..42470dde0f30 100644
--- a/java-workflow-executions/proto-google-cloud-workflow-executions-v1/src/main/java/com/google/cloud/workflows/executions/v1/ExecutionName.java
+++ b/java-workflow-executions/proto-google-cloud-workflow-executions-v1/src/main/java/com/google/cloud/workflows/executions/v1/ExecutionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExecutionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WORKFLOW_EXECUTION =
diff --git a/java-workflow-executions/proto-google-cloud-workflow-executions-v1/src/main/java/com/google/cloud/workflows/executions/v1/WorkflowName.java b/java-workflow-executions/proto-google-cloud-workflow-executions-v1/src/main/java/com/google/cloud/workflows/executions/v1/WorkflowName.java
index 5e40b56870b0..4c2c304adeeb 100644
--- a/java-workflow-executions/proto-google-cloud-workflow-executions-v1/src/main/java/com/google/cloud/workflows/executions/v1/WorkflowName.java
+++ b/java-workflow-executions/proto-google-cloud-workflow-executions-v1/src/main/java/com/google/cloud/workflows/executions/v1/WorkflowName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkflowName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WORKFLOW =
diff --git a/java-workflow-executions/proto-google-cloud-workflow-executions-v1beta/src/main/java/com/google/cloud/workflows/executions/v1beta/ExecutionName.java b/java-workflow-executions/proto-google-cloud-workflow-executions-v1beta/src/main/java/com/google/cloud/workflows/executions/v1beta/ExecutionName.java
index fad80a29d4a5..ca75b848229e 100644
--- a/java-workflow-executions/proto-google-cloud-workflow-executions-v1beta/src/main/java/com/google/cloud/workflows/executions/v1beta/ExecutionName.java
+++ b/java-workflow-executions/proto-google-cloud-workflow-executions-v1beta/src/main/java/com/google/cloud/workflows/executions/v1beta/ExecutionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExecutionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WORKFLOW_EXECUTION =
diff --git a/java-workflow-executions/proto-google-cloud-workflow-executions-v1beta/src/main/java/com/google/cloud/workflows/executions/v1beta/WorkflowName.java b/java-workflow-executions/proto-google-cloud-workflow-executions-v1beta/src/main/java/com/google/cloud/workflows/executions/v1beta/WorkflowName.java
index 295b7f42b6a0..27173711e736 100644
--- a/java-workflow-executions/proto-google-cloud-workflow-executions-v1beta/src/main/java/com/google/cloud/workflows/executions/v1beta/WorkflowName.java
+++ b/java-workflow-executions/proto-google-cloud-workflow-executions-v1beta/src/main/java/com/google/cloud/workflows/executions/v1beta/WorkflowName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkflowName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WORKFLOW =
diff --git a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/WorkflowsClient.java b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/WorkflowsClient.java
index 086b381b9c32..85f36144c258 100644
--- a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/WorkflowsClient.java
+++ b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/WorkflowsClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -269,6 +270,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkflowsClient implements BackgroundResource {
   private final WorkflowsSettings settings;
diff --git a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/WorkflowsSettings.java b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/WorkflowsSettings.java
index 5de67791c735..730d4afd7644 100644
--- a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/WorkflowsSettings.java
+++ b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/WorkflowsSettings.java
@@ -43,6 +43,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -118,6 +119,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkflowsSettings extends ClientSettings<WorkflowsSettings> {
 
diff --git a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/GrpcWorkflowsCallableFactory.java b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/GrpcWorkflowsCallableFactory.java
index 74019f30eb3b..8ab17346c159 100644
--- a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/GrpcWorkflowsCallableFactory.java
+++ b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/GrpcWorkflowsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWorkflowsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/GrpcWorkflowsStub.java b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/GrpcWorkflowsStub.java
index 83716941f92f..6f36018f3f9d 100644
--- a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/GrpcWorkflowsStub.java
+++ b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/GrpcWorkflowsStub.java
@@ -50,6 +50,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -57,6 +58,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWorkflowsStub extends WorkflowsStub {
   private static final MethodDescriptor<ListWorkflowsRequest, ListWorkflowsResponse>
diff --git a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/HttpJsonWorkflowsCallableFactory.java b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/HttpJsonWorkflowsCallableFactory.java
index 7d901ae8b584..59d96e7ddead 100644
--- a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/HttpJsonWorkflowsCallableFactory.java
+++ b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/HttpJsonWorkflowsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWorkflowsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/HttpJsonWorkflowsStub.java b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/HttpJsonWorkflowsStub.java
index 1bbe48f3675b..3ead6a5bdc1a 100644
--- a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/HttpJsonWorkflowsStub.java
+++ b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/HttpJsonWorkflowsStub.java
@@ -61,6 +61,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -68,6 +69,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWorkflowsStub extends WorkflowsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/WorkflowsStub.java b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/WorkflowsStub.java
index 10c2c2f122a6..3cd5a739b255 100644
--- a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/WorkflowsStub.java
+++ b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/WorkflowsStub.java
@@ -41,6 +41,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -48,6 +49,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class WorkflowsStub implements BackgroundResource {
 
diff --git a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/WorkflowsStubSettings.java b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/WorkflowsStubSettings.java
index 9cac1323854b..bf3a3c11a9df 100644
--- a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/WorkflowsStubSettings.java
+++ b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/WorkflowsStubSettings.java
@@ -75,6 +75,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class WorkflowsStubSettings extends StubSettings<WorkflowsStubSettings> {
diff --git a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/WorkflowsClient.java b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/WorkflowsClient.java
index f2c34d78fbcb..2b956dd904c8 100644
--- a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/WorkflowsClient.java
+++ b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/WorkflowsClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -254,6 +255,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class WorkflowsClient implements BackgroundResource {
diff --git a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/WorkflowsSettings.java b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/WorkflowsSettings.java
index ceb1a3795ce7..ffe808195a67 100644
--- a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/WorkflowsSettings.java
+++ b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/WorkflowsSettings.java
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -117,6 +118,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class WorkflowsSettings extends ClientSettings<WorkflowsSettings> {
diff --git a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/GrpcWorkflowsCallableFactory.java b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/GrpcWorkflowsCallableFactory.java
index 986c6a343ca8..2d47ccd80cb5 100644
--- a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/GrpcWorkflowsCallableFactory.java
+++ b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/GrpcWorkflowsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcWorkflowsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/GrpcWorkflowsStub.java b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/GrpcWorkflowsStub.java
index 1254d6345425..06b36faea36c 100644
--- a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/GrpcWorkflowsStub.java
+++ b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/GrpcWorkflowsStub.java
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -55,6 +56,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcWorkflowsStub extends WorkflowsStub {
diff --git a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/HttpJsonWorkflowsCallableFactory.java b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/HttpJsonWorkflowsCallableFactory.java
index 0f9a4d991dac..53855947cdf1 100644
--- a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/HttpJsonWorkflowsCallableFactory.java
+++ b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/HttpJsonWorkflowsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonWorkflowsCallableFactory
diff --git a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/HttpJsonWorkflowsStub.java b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/HttpJsonWorkflowsStub.java
index 01fc80b0dcb2..9056a5445c76 100644
--- a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/HttpJsonWorkflowsStub.java
+++ b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/HttpJsonWorkflowsStub.java
@@ -59,6 +59,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -66,6 +67,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonWorkflowsStub extends WorkflowsStub {
diff --git a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/WorkflowsStub.java b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/WorkflowsStub.java
index 51fbdd5a47ba..6fc0579a9cef 100644
--- a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/WorkflowsStub.java
+++ b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/WorkflowsStub.java
@@ -39,6 +39,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -46,6 +47,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class WorkflowsStub implements BackgroundResource {
diff --git a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/WorkflowsStubSettings.java b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/WorkflowsStubSettings.java
index d1db51fba6a5..95c93d762b82 100644
--- a/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/WorkflowsStubSettings.java
+++ b/java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1beta/stub/WorkflowsStubSettings.java
@@ -72,6 +72,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -147,6 +148,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-workflows/proto-google-cloud-workflows-v1/src/main/java/com/google/cloud/workflows/v1/LocationName.java b/java-workflows/proto-google-cloud-workflows-v1/src/main/java/com/google/cloud/workflows/v1/LocationName.java
index 995eb841ae83..679b2f8a21d3 100644
--- a/java-workflows/proto-google-cloud-workflows-v1/src/main/java/com/google/cloud/workflows/v1/LocationName.java
+++ b/java-workflows/proto-google-cloud-workflows-v1/src/main/java/com/google/cloud/workflows/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-workflows/proto-google-cloud-workflows-v1/src/main/java/com/google/cloud/workflows/v1/WorkflowName.java b/java-workflows/proto-google-cloud-workflows-v1/src/main/java/com/google/cloud/workflows/v1/WorkflowName.java
index 9c1c427398f0..20121fe4aaa9 100644
--- a/java-workflows/proto-google-cloud-workflows-v1/src/main/java/com/google/cloud/workflows/v1/WorkflowName.java
+++ b/java-workflows/proto-google-cloud-workflows-v1/src/main/java/com/google/cloud/workflows/v1/WorkflowName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkflowName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WORKFLOW =
diff --git a/java-workflows/proto-google-cloud-workflows-v1beta/src/main/java/com/google/cloud/workflows/v1beta/LocationName.java b/java-workflows/proto-google-cloud-workflows-v1beta/src/main/java/com/google/cloud/workflows/v1beta/LocationName.java
index 4db247c5a9c6..88d75df4e32a 100644
--- a/java-workflows/proto-google-cloud-workflows-v1beta/src/main/java/com/google/cloud/workflows/v1beta/LocationName.java
+++ b/java-workflows/proto-google-cloud-workflows-v1beta/src/main/java/com/google/cloud/workflows/v1beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-workflows/proto-google-cloud-workflows-v1beta/src/main/java/com/google/cloud/workflows/v1beta/WorkflowName.java b/java-workflows/proto-google-cloud-workflows-v1beta/src/main/java/com/google/cloud/workflows/v1beta/WorkflowName.java
index 8db6d1d742ff..c078f12473a0 100644
--- a/java-workflows/proto-google-cloud-workflows-v1beta/src/main/java/com/google/cloud/workflows/v1beta/WorkflowName.java
+++ b/java-workflows/proto-google-cloud-workflows-v1beta/src/main/java/com/google/cloud/workflows/v1beta/WorkflowName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkflowName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WORKFLOW =
diff --git a/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/WorkloadManagerClient.java b/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/WorkloadManagerClient.java
index bbe685ee0624..a71503e1abee 100644
--- a/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/WorkloadManagerClient.java
+++ b/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/WorkloadManagerClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -396,6 +397,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkloadManagerClient implements BackgroundResource {
   private final WorkloadManagerSettings settings;
diff --git a/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/WorkloadManagerSettings.java b/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/WorkloadManagerSettings.java
index e480ec9bb3dc..fc5ce20fd476 100644
--- a/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/WorkloadManagerSettings.java
+++ b/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/WorkloadManagerSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -123,6 +124,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkloadManagerSettings extends ClientSettings<WorkloadManagerSettings> {
 
diff --git a/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/GrpcWorkloadManagerCallableFactory.java b/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/GrpcWorkloadManagerCallableFactory.java
index c220673c3a07..43f15dd07f13 100644
--- a/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/GrpcWorkloadManagerCallableFactory.java
+++ b/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/GrpcWorkloadManagerCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWorkloadManagerCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/GrpcWorkloadManagerStub.java b/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/GrpcWorkloadManagerStub.java
index d5bac93aeea1..ab1be52b872f 100644
--- a/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/GrpcWorkloadManagerStub.java
+++ b/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/GrpcWorkloadManagerStub.java
@@ -62,6 +62,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -69,6 +70,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWorkloadManagerStub extends WorkloadManagerStub {
   private static final MethodDescriptor<ListEvaluationsRequest, ListEvaluationsResponse>
diff --git a/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/HttpJsonWorkloadManagerCallableFactory.java b/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/HttpJsonWorkloadManagerCallableFactory.java
index 0fcb8cdf9332..196d003019aa 100644
--- a/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/HttpJsonWorkloadManagerCallableFactory.java
+++ b/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/HttpJsonWorkloadManagerCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWorkloadManagerCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/HttpJsonWorkloadManagerStub.java b/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/HttpJsonWorkloadManagerStub.java
index 91aa719969ca..f00bf76e002c 100644
--- a/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/HttpJsonWorkloadManagerStub.java
+++ b/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/HttpJsonWorkloadManagerStub.java
@@ -73,6 +73,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -80,6 +81,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWorkloadManagerStub extends WorkloadManagerStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/WorkloadManagerStub.java b/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/WorkloadManagerStub.java
index fdc35e5a1011..9cdfd79035a7 100644
--- a/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/WorkloadManagerStub.java
+++ b/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/WorkloadManagerStub.java
@@ -53,6 +53,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -60,6 +61,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class WorkloadManagerStub implements BackgroundResource {
 
diff --git a/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/WorkloadManagerStubSettings.java b/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/WorkloadManagerStubSettings.java
index bbcb6b25cb98..2dcd74492462 100644
--- a/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/WorkloadManagerStubSettings.java
+++ b/java-workloadmanager/google-cloud-workloadmanager/src/main/java/com/google/cloud/workloadmanager/v1/stub/WorkloadManagerStubSettings.java
@@ -89,6 +89,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -167,6 +168,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class WorkloadManagerStubSettings extends StubSettings<WorkloadManagerStubSettings> {
diff --git a/java-workloadmanager/proto-google-cloud-workloadmanager-v1/src/main/java/com/google/cloud/workloadmanager/v1/EvaluationName.java b/java-workloadmanager/proto-google-cloud-workloadmanager-v1/src/main/java/com/google/cloud/workloadmanager/v1/EvaluationName.java
index a53f30b0ab25..723d547ea241 100644
--- a/java-workloadmanager/proto-google-cloud-workloadmanager-v1/src/main/java/com/google/cloud/workloadmanager/v1/EvaluationName.java
+++ b/java-workloadmanager/proto-google-cloud-workloadmanager-v1/src/main/java/com/google/cloud/workloadmanager/v1/EvaluationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class EvaluationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_EVALUATION =
diff --git a/java-workloadmanager/proto-google-cloud-workloadmanager-v1/src/main/java/com/google/cloud/workloadmanager/v1/ExecutionName.java b/java-workloadmanager/proto-google-cloud-workloadmanager-v1/src/main/java/com/google/cloud/workloadmanager/v1/ExecutionName.java
index c9ca5e5b85d6..a619e6f0a315 100644
--- a/java-workloadmanager/proto-google-cloud-workloadmanager-v1/src/main/java/com/google/cloud/workloadmanager/v1/ExecutionName.java
+++ b/java-workloadmanager/proto-google-cloud-workloadmanager-v1/src/main/java/com/google/cloud/workloadmanager/v1/ExecutionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class ExecutionName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_EVALUATION_EXECUTION =
diff --git a/java-workloadmanager/proto-google-cloud-workloadmanager-v1/src/main/java/com/google/cloud/workloadmanager/v1/LocationName.java b/java-workloadmanager/proto-google-cloud-workloadmanager-v1/src/main/java/com/google/cloud/workloadmanager/v1/LocationName.java
index 0ba4f847ad42..cd735d5b09ee 100644
--- a/java-workloadmanager/proto-google-cloud-workloadmanager-v1/src/main/java/com/google/cloud/workloadmanager/v1/LocationName.java
+++ b/java-workloadmanager/proto-google-cloud-workloadmanager-v1/src/main/java/com/google/cloud/workloadmanager/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-workloadmanager/proto-google-cloud-workloadmanager-v1/src/main/java/com/google/cloud/workloadmanager/v1/RuleName.java b/java-workloadmanager/proto-google-cloud-workloadmanager-v1/src/main/java/com/google/cloud/workloadmanager/v1/RuleName.java
index 17e41d73a74f..67b0363378c7 100644
--- a/java-workloadmanager/proto-google-cloud-workloadmanager-v1/src/main/java/com/google/cloud/workloadmanager/v1/RuleName.java
+++ b/java-workloadmanager/proto-google-cloud-workloadmanager-v1/src/main/java/com/google/cloud/workloadmanager/v1/RuleName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class RuleName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_RULE =
diff --git a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/SubscriptionsServiceClient.java b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/SubscriptionsServiceClient.java
index 6534cec6ab48..3350ea7c2828 100644
--- a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/SubscriptionsServiceClient.java
+++ b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/SubscriptionsServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -245,6 +246,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SubscriptionsServiceClient implements BackgroundResource {
   private final SubscriptionsServiceSettings settings;
diff --git a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/SubscriptionsServiceSettings.java b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/SubscriptionsServiceSettings.java
index 42ecd27b48c4..dfe75baa1ef5 100644
--- a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/SubscriptionsServiceSettings.java
+++ b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/SubscriptionsServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SubscriptionsServiceSettings extends ClientSettings<SubscriptionsServiceSettings> {
 
diff --git a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/GrpcSubscriptionsServiceCallableFactory.java b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/GrpcSubscriptionsServiceCallableFactory.java
index f73911812096..28d084c3e624 100644
--- a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/GrpcSubscriptionsServiceCallableFactory.java
+++ b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/GrpcSubscriptionsServiceCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSubscriptionsServiceCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/GrpcSubscriptionsServiceStub.java b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/GrpcSubscriptionsServiceStub.java
index bd2b38fe1d90..f242c1e4764c 100644
--- a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/GrpcSubscriptionsServiceStub.java
+++ b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/GrpcSubscriptionsServiceStub.java
@@ -46,6 +46,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -53,6 +54,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcSubscriptionsServiceStub extends SubscriptionsServiceStub {
   private static final MethodDescriptor<CreateSubscriptionRequest, Operation>
diff --git a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/HttpJsonSubscriptionsServiceCallableFactory.java b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/HttpJsonSubscriptionsServiceCallableFactory.java
index 2dfd7f5942e1..89fbb73b03dd 100644
--- a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/HttpJsonSubscriptionsServiceCallableFactory.java
+++ b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/HttpJsonSubscriptionsServiceCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSubscriptionsServiceCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/HttpJsonSubscriptionsServiceStub.java b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/HttpJsonSubscriptionsServiceStub.java
index 101948694999..2625389f7a70 100644
--- a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/HttpJsonSubscriptionsServiceStub.java
+++ b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/HttpJsonSubscriptionsServiceStub.java
@@ -57,6 +57,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -64,6 +65,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonSubscriptionsServiceStub extends SubscriptionsServiceStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/SubscriptionsServiceStub.java b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/SubscriptionsServiceStub.java
index f0d56af4df9c..c14db8d4e19b 100644
--- a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/SubscriptionsServiceStub.java
+++ b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/SubscriptionsServiceStub.java
@@ -37,6 +37,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -44,6 +45,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class SubscriptionsServiceStub implements BackgroundResource {
 
diff --git a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/SubscriptionsServiceStubSettings.java b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/SubscriptionsServiceStubSettings.java
index 55415715d210..725d6d234740 100644
--- a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/SubscriptionsServiceStubSettings.java
+++ b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/SubscriptionsServiceStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class SubscriptionsServiceStubSettings
diff --git a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/SubscriptionsServiceClient.java b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/SubscriptionsServiceClient.java
index 576f15f19be8..5439ab46bdf8 100644
--- a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/SubscriptionsServiceClient.java
+++ b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/SubscriptionsServiceClient.java
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -245,6 +246,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SubscriptionsServiceClient implements BackgroundResource {
diff --git a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/SubscriptionsServiceSettings.java b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/SubscriptionsServiceSettings.java
index 8ca7a95a6d91..81a675ef1c62 100644
--- a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/SubscriptionsServiceSettings.java
+++ b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/SubscriptionsServiceSettings.java
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -116,6 +117,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class SubscriptionsServiceSettings extends ClientSettings<SubscriptionsServiceSettings> {
diff --git a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/GrpcSubscriptionsServiceCallableFactory.java b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/GrpcSubscriptionsServiceCallableFactory.java
index 0515b0e7d88e..d175cf9af23e 100644
--- a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/GrpcSubscriptionsServiceCallableFactory.java
+++ b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/GrpcSubscriptionsServiceCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSubscriptionsServiceCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/GrpcSubscriptionsServiceStub.java b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/GrpcSubscriptionsServiceStub.java
index e45be8ab77ff..cd56dab25ef4 100644
--- a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/GrpcSubscriptionsServiceStub.java
+++ b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/GrpcSubscriptionsServiceStub.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -54,6 +55,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcSubscriptionsServiceStub extends SubscriptionsServiceStub {
diff --git a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/HttpJsonSubscriptionsServiceCallableFactory.java b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/HttpJsonSubscriptionsServiceCallableFactory.java
index 92f2e48b7bcd..498988e5f745 100644
--- a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/HttpJsonSubscriptionsServiceCallableFactory.java
+++ b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/HttpJsonSubscriptionsServiceCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSubscriptionsServiceCallableFactory
diff --git a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/HttpJsonSubscriptionsServiceStub.java b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/HttpJsonSubscriptionsServiceStub.java
index 0266a53bdf33..e0730f148fe9 100644
--- a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/HttpJsonSubscriptionsServiceStub.java
+++ b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/HttpJsonSubscriptionsServiceStub.java
@@ -58,6 +58,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -65,6 +66,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonSubscriptionsServiceStub extends SubscriptionsServiceStub {
diff --git a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/SubscriptionsServiceStub.java b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/SubscriptionsServiceStub.java
index 7418f1f17af2..e7e20d5b3ddf 100644
--- a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/SubscriptionsServiceStub.java
+++ b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/SubscriptionsServiceStub.java
@@ -38,6 +38,7 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -45,6 +46,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class SubscriptionsServiceStub implements BackgroundResource {
diff --git a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/SubscriptionsServiceStubSettings.java b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/SubscriptionsServiceStubSettings.java
index 062c74394a3c..8a8fad98e466 100644
--- a/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/SubscriptionsServiceStubSettings.java
+++ b/java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1beta/stub/SubscriptionsServiceStubSettings.java
@@ -71,6 +71,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -150,6 +151,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-workspaceevents/proto-google-cloud-workspaceevents-v1/src/main/java/com/google/apps/events/subscriptions/v1/SubscriptionName.java b/java-workspaceevents/proto-google-cloud-workspaceevents-v1/src/main/java/com/google/apps/events/subscriptions/v1/SubscriptionName.java
index 813e8c93a380..87b8d7958677 100644
--- a/java-workspaceevents/proto-google-cloud-workspaceevents-v1/src/main/java/com/google/apps/events/subscriptions/v1/SubscriptionName.java
+++ b/java-workspaceevents/proto-google-cloud-workspaceevents-v1/src/main/java/com/google/apps/events/subscriptions/v1/SubscriptionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SubscriptionName implements ResourceName {
   private static final PathTemplate SUBSCRIPTION =
diff --git a/java-workspaceevents/proto-google-cloud-workspaceevents-v1beta/src/main/java/com/google/apps/events/subscriptions/v1beta/SubscriptionName.java b/java-workspaceevents/proto-google-cloud-workspaceevents-v1beta/src/main/java/com/google/apps/events/subscriptions/v1beta/SubscriptionName.java
index 8bd7b4b4a9db..381abec68413 100644
--- a/java-workspaceevents/proto-google-cloud-workspaceevents-v1beta/src/main/java/com/google/apps/events/subscriptions/v1beta/SubscriptionName.java
+++ b/java-workspaceevents/proto-google-cloud-workspaceevents-v1beta/src/main/java/com/google/apps/events/subscriptions/v1beta/SubscriptionName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class SubscriptionName implements ResourceName {
   private static final PathTemplate SUBSCRIPTION =
diff --git a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/WorkstationsClient.java b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/WorkstationsClient.java
index 126030197c63..64d396485c8e 100644
--- a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/WorkstationsClient.java
+++ b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/WorkstationsClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -564,6 +565,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkstationsClient implements BackgroundResource {
   private final WorkstationsSettings settings;
diff --git a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/WorkstationsSettings.java b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/WorkstationsSettings.java
index f34af3206204..7ca14b07c0e3 100644
--- a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/WorkstationsSettings.java
+++ b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/WorkstationsSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkstationsSettings extends ClientSettings<WorkstationsSettings> {
 
diff --git a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/GrpcWorkstationsCallableFactory.java b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/GrpcWorkstationsCallableFactory.java
index a0277b535e9f..6e7adb42d2e9 100644
--- a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/GrpcWorkstationsCallableFactory.java
+++ b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/GrpcWorkstationsCallableFactory.java
@@ -34,6 +34,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -41,6 +42,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWorkstationsCallableFactory implements GrpcStubCallableFactory {
 
diff --git a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/GrpcWorkstationsStub.java b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/GrpcWorkstationsStub.java
index 173589f8e05b..9d340e580f1f 100644
--- a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/GrpcWorkstationsStub.java
+++ b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/GrpcWorkstationsStub.java
@@ -72,6 +72,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -79,6 +80,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class GrpcWorkstationsStub extends WorkstationsStub {
   private static final MethodDescriptor<GetWorkstationClusterRequest, WorkstationCluster>
diff --git a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/HttpJsonWorkstationsCallableFactory.java b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/HttpJsonWorkstationsCallableFactory.java
index 53bf0337f849..3154b136f16a 100644
--- a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/HttpJsonWorkstationsCallableFactory.java
+++ b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/HttpJsonWorkstationsCallableFactory.java
@@ -32,6 +32,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -39,6 +40,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWorkstationsCallableFactory
     implements HttpJsonStubCallableFactory<Operation, OperationsStub> {
diff --git a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/HttpJsonWorkstationsStub.java b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/HttpJsonWorkstationsStub.java
index e247e097f6f2..a86ca2a85181 100644
--- a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/HttpJsonWorkstationsStub.java
+++ b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/HttpJsonWorkstationsStub.java
@@ -83,6 +83,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -90,6 +91,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public class HttpJsonWorkstationsStub extends WorkstationsStub {
   private static final TypeRegistry typeRegistry =
diff --git a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/WorkstationsStub.java b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/WorkstationsStub.java
index 282b24eb267e..f43e21bd27cf 100644
--- a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/WorkstationsStub.java
+++ b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/WorkstationsStub.java
@@ -63,6 +63,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -70,6 +71,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 public abstract class WorkstationsStub implements BackgroundResource {
 
diff --git a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/WorkstationsStubSettings.java b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/WorkstationsStubSettings.java
index 8bc3d4c7d47b..8b27f721acfc 100644
--- a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/WorkstationsStubSettings.java
+++ b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/stub/WorkstationsStubSettings.java
@@ -97,6 +97,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -174,6 +175,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
 public class WorkstationsStubSettings extends StubSettings<WorkstationsStubSettings> {
diff --git a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/WorkstationsClient.java b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/WorkstationsClient.java
index 9040874cdb08..226bd879eb8a 100644
--- a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/WorkstationsClient.java
+++ b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/WorkstationsClient.java
@@ -42,6 +42,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -584,6 +585,7 @@
  *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class WorkstationsClient implements BackgroundResource {
diff --git a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/WorkstationsSettings.java b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/WorkstationsSettings.java
index f83636286622..07b1e97fe59b 100644
--- a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/WorkstationsSettings.java
+++ b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/WorkstationsSettings.java
@@ -45,6 +45,7 @@
 import java.io.IOException;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -120,6 +121,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class WorkstationsSettings extends ClientSettings<WorkstationsSettings> {
diff --git a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/GrpcWorkstationsCallableFactory.java b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/GrpcWorkstationsCallableFactory.java
index 451cac3040f4..965e7de8f233 100644
--- a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/GrpcWorkstationsCallableFactory.java
+++ b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/GrpcWorkstationsCallableFactory.java
@@ -35,6 +35,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -42,6 +43,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcWorkstationsCallableFactory implements GrpcStubCallableFactory {
diff --git a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/GrpcWorkstationsStub.java b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/GrpcWorkstationsStub.java
index da616c32c958..02645e1e76c3 100644
--- a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/GrpcWorkstationsStub.java
+++ b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/GrpcWorkstationsStub.java
@@ -75,6 +75,7 @@
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -82,6 +83,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class GrpcWorkstationsStub extends WorkstationsStub {
diff --git a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/HttpJsonWorkstationsCallableFactory.java b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/HttpJsonWorkstationsCallableFactory.java
index 3f20cbb8f079..defa8eca52c7 100644
--- a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/HttpJsonWorkstationsCallableFactory.java
+++ b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/HttpJsonWorkstationsCallableFactory.java
@@ -33,6 +33,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.longrunning.Operation;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -40,6 +41,7 @@
  *
  * <p>This class is for advanced usage.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonWorkstationsCallableFactory
diff --git a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/HttpJsonWorkstationsStub.java b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/HttpJsonWorkstationsStub.java
index 204f7174fa5d..8b1b2ce88968 100644
--- a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/HttpJsonWorkstationsStub.java
+++ b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/HttpJsonWorkstationsStub.java
@@ -86,6 +86,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -93,6 +94,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public class HttpJsonWorkstationsStub extends WorkstationsStub {
diff --git a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/WorkstationsStub.java b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/WorkstationsStub.java
index 885752950414..e68aa659a2c1 100644
--- a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/WorkstationsStub.java
+++ b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/WorkstationsStub.java
@@ -66,6 +66,7 @@
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -73,6 +74,7 @@
  *
  * <p>This class is for advanced usage and reflects the underlying API directly.
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 public abstract class WorkstationsStub implements BackgroundResource {
diff --git a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/WorkstationsStubSettings.java b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/WorkstationsStubSettings.java
index a70421e9920e..7070013e7ad3 100644
--- a/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/WorkstationsStubSettings.java
+++ b/java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/stub/WorkstationsStubSettings.java
@@ -99,6 +99,7 @@
 import java.time.Duration;
 import java.util.List;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
 /**
@@ -176,6 +177,7 @@
  *     .build();
  * }</pre>
  */
+@NullMarked
 @BetaApi
 @Generated("by gapic-generator-java")
 @SuppressWarnings("CanonicalDuration")
diff --git a/java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/LocationName.java b/java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/LocationName.java
index 4d93c8ed713c..92a3fb7db753 100644
--- a/java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/LocationName.java
+++ b/java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/WorkstationClusterName.java b/java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/WorkstationClusterName.java
index 6f1da179280e..27f3e2b97d6b 100644
--- a/java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/WorkstationClusterName.java
+++ b/java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/WorkstationClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkstationClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WORKSTATION_CLUSTER =
diff --git a/java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/WorkstationConfigName.java b/java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/WorkstationConfigName.java
index e5b18582b370..2511e2857e42 100644
--- a/java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/WorkstationConfigName.java
+++ b/java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/WorkstationConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkstationConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WORKSTATION_CLUSTER_WORKSTATION_CONFIG =
diff --git a/java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/WorkstationName.java b/java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/WorkstationName.java
index 14d4e35666b1..3352bbeb149e 100644
--- a/java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/WorkstationName.java
+++ b/java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/WorkstationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkstationName implements ResourceName {
   private static final PathTemplate
diff --git a/java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/LocationName.java b/java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/LocationName.java
index aef5333ea815..16c1cc916bd7 100644
--- a/java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/LocationName.java
+++ b/java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/LocationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class LocationName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION =
diff --git a/java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationClusterName.java b/java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationClusterName.java
index e0dba7da7a9b..5eb928e82705 100644
--- a/java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationClusterName.java
+++ b/java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationClusterName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkstationClusterName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WORKSTATION_CLUSTER =
diff --git a/java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationConfigName.java b/java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationConfigName.java
index b430468cf93c..739aa56aa176 100644
--- a/java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationConfigName.java
+++ b/java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationConfigName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkstationConfigName implements ResourceName {
   private static final PathTemplate PROJECT_LOCATION_WORKSTATION_CLUSTER_WORKSTATION_CONFIG =
diff --git a/java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationName.java b/java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationName.java
index a7d108eec126..91c67a3f34f2 100644
--- a/java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationName.java
+++ b/java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationName.java
@@ -25,8 +25,10 @@
 import java.util.Map;
 import java.util.Objects;
 import javax.annotation.Generated;
+import org.jspecify.annotations.NullMarked;
 
 // AUTO-GENERATED DOCUMENTATION AND CLASS.
+@NullMarked
 @Generated("by gapic-generator-java")
 public class WorkstationName implements ResourceName {
   private static final PathTemplate